WO2018143364A1 - 繊維処理用の処理剤、繊維及びその製造方法、並びに繊維シート及びその製造方法 - Google Patents
繊維処理用の処理剤、繊維及びその製造方法、並びに繊維シート及びその製造方法 Download PDFInfo
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- WO2018143364A1 WO2018143364A1 PCT/JP2018/003465 JP2018003465W WO2018143364A1 WO 2018143364 A1 WO2018143364 A1 WO 2018143364A1 JP 2018003465 W JP2018003465 W JP 2018003465W WO 2018143364 A1 WO2018143364 A1 WO 2018143364A1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6433—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing carboxylic groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/11—Oleophobic properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
Definitions
- the present invention relates to a treatment agent for fiber treatment, a fiber and a production method thereof, and a fiber sheet and a production method thereof.
- a technique for water-repellent or oil-repellent processing of fibers for example, a solution, emulsion, dispersion, or the like in which a water-repellent compound is dissolved or dispersed in a solvent or water is applied to the fiber, and then the solvent, water, or the like is vaporized.
- a method for forming a continuous water-repellent film is generally known.
- Patent Document 1 discloses a method of incorporating water-repellent particles in fibers by adding and mixing the water-repellent particles to the spinning dope.
- a treatment agent used for imparting water repellency to fibers is required to have excellent water repellency.
- the treatment agent can preferably provide heat insulation.
- This invention is made
- Another object of the present invention is to provide a fiber production method and a fiber sheet production method using the treatment agent, and a fiber and a fiber sheet obtained using the treatment agent.
- the present inventors have obtained a liquid composition comprising a polysiloxane compound having a reactive group (hydrolyzable functional group or condensable functional group) in the molecule.
- a polysiloxane compound having a reactive group hydrolyzable functional group or condensable functional group
- the treatment agent obtained by using this it was found that excellent water repellency and heat insulation were expressed, and the present invention was completed.
- the present invention is at least one selected from the group consisting of a polysiloxane compound having a hydrolyzable functional group or a condensable functional group, and a hydrolysis product of the polysiloxane compound having the hydrolyzable functional group.
- the processing agent for fiber processing containing the condensate of the liquid composition containing this is provided.
- the present invention is selected from the group consisting of a hydrolyzable functional group or a polysiloxane compound having a condensable functional group, and a hydrolysis product of the polysiloxane compound having the hydrolyzable functional group.
- a treating agent for treating a fiber comprising a liquid composition containing at least one kind. According to such a treatment agent, excellent water repellency and heat insulating properties can be imparted to the fiber.
- the liquid composition may further contain silica particles.
- Such a treatment agent further improves water repellency and heat insulation.
- the number of silanol groups per gram of the silica particles may be 10 ⁇ 10 18 to 1000 ⁇ 10 18 pcs / g. Thereby, it can process in low temperature and a short time, and water repellency improves further. Thereby, the adhesiveness of a processing agent and a fiber improves.
- examples of the polysiloxane compound include compounds represented by the following formula (A). Thereby, the further outstanding water repellency and adhesiveness can be achieved.
- R 1a represents a hydroxyalkyl group
- R 2a represents an alkylene group
- R 3a and R 4a each independently represents an alkyl group or an aryl group
- n represents an integer of 1 to 50 .
- examples of the polysiloxane compound include compounds represented by the following formula (B). Thereby, the further outstanding water repellency and adhesiveness can be achieved.
- R 1b represents an alkyl group, an alkoxy group or an aryl group
- R 2b and R 3b each independently represents an alkoxy group
- R 4b and R 5b each independently represents an alkyl group or an aryl group.
- M represents an integer of 1 to 50.
- the liquid composition is selected from the group consisting of a silane monomer having a hydrolyzable functional group or a condensable functional group, and a hydrolysis product of the silane monomer having a hydrolyzable functional group. It may further contain at least one of the above. Thereby, the further outstanding water repellency and adhesiveness can be achieved.
- the liquid composition may further contain airgel particles. Thereby, water repellency improves more.
- the treatment agent may be used to form a water repellent portion on the treated surface of the fiber.
- a water repellent portion By forming such a water-repellent part, further excellent water repellency can be achieved.
- the water repellent part may contain airgel.
- the present invention also provides a treating agent for fiber treatment, comprising a water repellent component containing a compound having a structure represented by the following formula (1).
- a treatment agent is excellent in water repellency and heat insulation.
- R 1 and R 2 each independently represent an alkyl group or an aryl group
- R 3 and R 4 each independently represent an alkylene group.
- the present invention also has a ladder-type structure including a support portion and a bridge portion, and the bridge portion includes a water-repellent component containing a compound represented by the following formula (2), a treatment for fiber treatment Provide the agent.
- a treatment agent has excellent heat insulation, water repellency and durability due to the ladder structure.
- R 5 and R 6 each independently represents an alkyl group or an aryl group, and b represents an integer of 1 to 50.
- the compound having a ladder structure includes a compound having a structure represented by the following formula (3). Thereby, the further outstanding water repellency and durability can be achieved.
- R 5 , R 6 , R 7 and R 8 each independently represents an alkyl group or an aryl group, a and c each independently represent an integer of 1 to 3000, and b represents 1 to 50 Indicates an integer.
- the water repellent part may contain an airgel.
- the water repellent component may be an airgel.
- the present invention provides a method for producing a surface-treated fiber, comprising a step of treating a fiber using the treatment agent. According to such a production method, a fiber excellent in water repellency and heat insulation can be produced.
- the present invention comprises a method for producing a surface-treated fiber sheet, comprising a step of producing a fiber sheet using the surface-treated fiber obtained by the production method described above, or a step of treating the fiber sheet using the treatment agent.
- a method for producing a surface-treated fiber sheet comprising a step of producing a fiber sheet using the surface-treated fiber obtained by the production method described above, or a step of treating the fiber sheet using the treatment agent.
- I will provide a. According to such a manufacturing method, a fiber sheet excellent in water repellency and heat insulating properties can be manufactured.
- the present invention provides a surface-treated fiber comprising a fiber and a treatment unit containing a dried product of the treatment agent on a treated surface of the fiber.
- a surface-treated fiber comprising a fiber and a treatment unit containing a dried product of the treatment agent on a treated surface of the fiber.
- Such a fiber is excellent in water repellency and heat insulation.
- the present invention provides a surface-treated fiber sheet containing the surface-treated fiber.
- a fiber sheet is excellent in water repellency and heat insulation.
- the present invention provides a water-repellent fiber comprising a fiber and a water-repellent part containing a compound having a structure represented by the above formula (1) on the treated surface of the fiber.
- the present invention has a ladder-type structure including a fiber and a strut portion and a bridge portion on a surface to be treated of the fiber, and the water repellent portion includes the compound represented by the above formula (2). And a water-repellent fiber.
- the said fiber may be provided with the water repellent part containing the compound which has a structure represented by the said Formula (3) on a to-be-processed surface.
- the water repellent part may contain airgel.
- the present invention also provides a water-repellent fiber sheet comprising the water-repellent fiber of the present invention.
- the present invention it is possible to provide a treating agent for treating fibers that can impart excellent water repellency and heat insulating properties to the fibers. Moreover, according to this invention, the manufacturing method of a fiber, the manufacturing method of a fiber sheet, a fiber, and a fiber sheet using the said processing agent can be provided.
- FIG. 3 is a diagram showing a solid 29 Si-NMR spectrum of a water repellent part in a water repellent fiber sheet 7 measured using a DD / MAS method. It is a figure which represents typically the fiber (water-repellent fiber) which concerns on one Embodiment of this invention. It is a figure which represents typically the fiber (water-repellent fiber) which concerns on one Embodiment of this invention. It is a figure which represents typically the fiber (water-repellent fiber) which concerns on one Embodiment of this invention. It is a figure which represents typically the fiber (water-repellent fiber) which concerns on one Embodiment of this invention.
- a numerical range indicated by using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the upper limit value or the lower limit value of a numerical range in a certain step may be replaced with the upper limit value or the lower limit value of a numerical range in another step.
- the upper limit value or the lower limit value of the numerical range may be replaced with the values shown in the examples.
- “A or B” only needs to include either A or B, and may include both.
- the materials exemplified in the present specification can be used singly or in combination of two or more unless otherwise specified.
- the content of each component in the composition means the total amount of the plurality of substances present in the composition unless there is a specific notice when there are a plurality of substances corresponding to each component in the composition. means.
- the treatment agent of this embodiment is for fiber treatment.
- Examples of the treatment agent of the present embodiment include the following first to fourth aspects.
- the treating agent includes a polysiloxane compound having a hydrolyzable functional group or a condensable functional group (in the molecule), and a hydrolysis product of the polysiloxane compound having the hydrolyzable functional group
- a condensate of a liquid composition containing at least one selected from the group consisting of hereinafter sometimes referred to as “polysiloxane compound group”.
- the treating agent is also selected from the group consisting of a polysiloxane compound having a hydrolyzable functional group or a condensable functional group, and a hydrolysis product of the polysiloxane compound having the hydrolyzable functional group.
- a liquid composition containing at least one kind may be included (the treatment agent may be the liquid composition).
- the treatment agent may be the liquid composition.
- excellent water repellency and heat insulating properties can be imparted to the fiber.
- the treatment agent may be used to form a water repellent portion (treatment portion) on the treated surface of the fiber.
- the water-repellent part formed from the treatment agent has excellent water repellency and excellent adhesion to the surface to be treated. Since the water repellent part formed from the said processing agent is excellent also in heat insulation, it can provide the heat insulating function excellent in the fiber.
- the water repellent part includes, for example, at least one of a film-like water repellent part (hereinafter also referred to as “water repellent film”) and a particulate water repellent part (hereinafter also referred to as “water repellent particle”).
- a film-like water repellent part hereinafter also referred to as “water repellent film”
- a particulate water repellent part hereinafter also referred to as “water repellent particle”.
- the treatment agent of this embodiment may form a water-repellent film and / or water-repellent particles on the treated surface of the fiber.
- the present inventors presume the reason why the treatment agent of this embodiment exhibits excellent water repellency as follows. Since the treatment agent of the present embodiment contains a polysiloxane compound group, it is considered that the reaction is easier to control than, for example, a treatment agent containing only a siloxane monomer as a siloxane compound. And it is thought that this makes it easy to reduce the hydrophilic group (for example, hydroxyl group (OH group)) in the compound forming the water-repellent part and exhibits excellent water repellency.
- the hydrophilic group for example, hydroxyl group (OH group)
- the water-repellent part formed from the treatment agent of the present embodiment is difficult for hydrophilic dirt to adhere to and that such dirt is easily removed. Therefore, it is considered that the treatment agent can be easily applied to uses where hydrophilic dirt easily adheres.
- an adhesive, an additive, and the like are generally added to improve the adhesion between the water repellent and the fiber.
- an adhesive and an additive are added, the water repellency, abrasion resistance, and solvent resistance usually tend to decrease.
- the processing agent of this embodiment is excellent also in adhesiveness, water repellency, abrasion resistance, and solvent resistance, it is thought that the said adhesive agent and the said additive are not necessarily required.
- the fiber obtained by the method of Patent Document 1 cannot be said to have sufficient water repellency.
- water-repellent particles involved in water repellency are water-repellent particles on the fiber surface
- the amount of water-repellent particles contained in the entire fiber It is considered that the amount of water-repellent particles appearing on the surface is small.
- the amount of water-repellent particles is increased in order to improve water repellency, the amount of water-repellent particles inside the fiber also increases, so the properties of the fiber itself change (fiber becomes hard, brittle, etc. ) And spinning becomes impossible.
- the treatment agent of the present embodiment can impart water repellency without impairing the properties of the fiber itself.
- hydrolyzable functional group examples include an alkoxy group.
- condensable functional groups include hydroxyl groups, silanol groups, carboxyl groups, phenolic hydroxyl groups, and the like.
- the hydroxyl group may be contained in a hydroxyl group-containing group such as a hydroxyalkyl group.
- a polysiloxane compound having a hydrolyzable functional group or a condensable functional group is a reactive group (hydrolyzable functional group and condensable functional group) different from the hydrolyzable functional group and the condensable functional group. You may further have a functional group which does not correspond to a functional group.
- the reactive group examples include an epoxy group, a mercapto group, a glycidoxy group, a vinyl group, an acryloyl group, a methacryloyl group, and an amino group.
- the epoxy group may be contained in an epoxy group-containing group such as a glycidoxy group.
- These polysiloxane compounds having functional groups and reactive groups may be used alone or in admixture of two or more.
- an alkoxy group, a silanol group, and a hydroxyalkyl group can improve the compatibility of the treatment agent and can suppress layer separation.
- the number of carbon atoms of the alkoxy group and hydroxyalkyl group may be, for example, 1-6.
- Examples of the polysiloxane compound having a hydroxyalkyl group include compounds having a structure represented by the following general formula (A).
- R 1a represents a hydroxyalkyl group
- R 2a represents an alkylene group
- R 3a and R 4a each independently represents an alkyl group or an aryl group
- n represents an integer of 1 to 50.
- examples of the aryl group include a phenyl group and a substituted phenyl group.
- examples of the substituent of the substituted phenyl group include an alkyl group, a vinyl group, a mercapto group, an amino group, a nitro group, and a cyano group.
- two R 1a s may be the same or different, and similarly, two R 2a s may be the same or different.
- two or more R 3a s may be the same or different, and similarly two or more R 4a s may be the same or different.
- R 1a includes a hydroxyalkyl group having 1 to 6 carbon atoms, and examples of the hydroxyalkyl group include a hydroxyethyl group, a hydroxypropyl group, and the like.
- examples of R 2a include an alkylene group having 1 to 6 carbon atoms, and examples of the alkylene group include an ethylene group and a propylene group.
- R 3a and R 4a each independently include an alkyl group having 1 to 6 carbon atoms, a phenyl group, and the like, and examples of the alkyl group include a methyl group and the like.
- n may be, for example, 2 to 30, or 5 to 20.
- polysiloxane compound having the structure represented by the above formula (A) a commercially available product can be used, and compounds such as X-22-160AS, KF-6001, KF-6002, KF-6003, etc. Shin-Etsu Chemical Co., Ltd.), XF42-B0970, XF42-C5277, Fluid OFOH 702-4%, etc. (all of which are manufactured by Momentive).
- Examples of the polysiloxane compound having an alkoxy group include compounds having a structure represented by the following general formula (B).
- R 1b represents an alkyl group, an alkoxy group or an aryl group
- R 2b and R 3b each independently represent an alkoxy group
- R 4b and R 5b each independently represent an alkyl group or an aryl group.
- M represents an integer of 1 to 50.
- examples of the aryl group include a phenyl group and a substituted phenyl group.
- examples of the substituent of the substituted phenyl group include an alkyl group, a vinyl group, a mercapto group, an amino group, a nitro group, and a cyano group.
- two R 1b s may be the same or different from each other, and two R 2b s may be the same or different from each other, and similarly two R 1b s. 3b may be the same or different.
- m is an integer of 2 or more
- two or more R 4b s may be the same or different
- similarly two or more R 5b s are each the same. May be different.
- R 1b includes an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, and the like. Group, methoxy group, ethoxy group and the like.
- R 2b and R 3b each independently include an alkoxy group having 1 to 6 carbon atoms, and examples of the alkoxy group include a methoxy group and an ethoxy group.
- R 4b and R 5b each independently include an alkyl group having 1 to 6 carbon atoms, a phenyl group, and the like, and examples of the alkyl group include a methyl group and the like.
- m may be, for example, 2 to 30, or 5 to 20.
- the polysiloxane compound having the structure represented by the general formula (B) can be obtained by appropriately referring to the production methods reported in, for example, JP-A Nos. 2000-26609 and 2012-233110. Can do.
- the polysiloxane compound having an alkoxy group may exist as a hydrolysis product in the liquid composition, and the polysiloxane compound having an alkoxy group and the hydrolysis product thereof May be mixed.
- the polysiloxane compound having an alkoxy group all of the alkoxy groups in the molecule may be hydrolyzed or partially hydrolyzed.
- polysiloxane compounds having hydrolyzable functional groups or condensable functional groups and the hydrolysis products of polysiloxane compounds having hydrolyzable functional groups may be used alone or in combination of two or more. May be used.
- the treatment agent of the present embodiment may further contain silica particles from the viewpoint of further improving the water repellency and heat insulating properties. That is, the liquid composition comprises silica particles, a polysiloxane compound having a hydrolyzable functional group or a condensable functional group, and a hydrolysis product of the polysiloxane compound having the hydrolyzable functional group. And at least one selected from the group may be contained.
- the reason why the water repellency is improved is that when the treatment agent contains silica particles, the compound constituting the water-repellent part can easily control Q + T: D, which will be described later, and the hydroxyl group in the compound. It is conceivable that the amount of this is easily reduced.
- the silica particles can be used without particular limitation, and examples thereof include amorphous silica particles.
- examples of the amorphous silica particles include fused silica particles, fumed silica particles, and colloidal silica particles.
- colloidal silica particles have high monodispersibility and are easy to suppress aggregation in the treatment agent.
- the shape of the silica particles is not particularly limited, and examples thereof include a spherical shape, a cage shape, and an association type. Among these, by using spherical particles as the silica particles, it becomes easy to suppress aggregation in the treatment agent.
- the average primary particle diameter of the silica particles may be, for example, 1 nm or more from the viewpoint that it is easy to obtain a water-repellent film and / or water-repellent particles having an appropriate hardness and the durability against thermal shock and scratches is easily improved. Alternatively, it may be 5 nm or more, or 20 nm or more.
- the average primary particle diameter of the silica particles may be, for example, 200 nm or less, 150 nm or less, and 100 nm or less. Also good. From these viewpoints, the average primary particle diameter of the silica particles may be, for example, 1 to 200 nm, 5 to 150 nm, or 20 to 100 nm.
- the silica particles may be particles having a hollow structure, a porous structure, or the like.
- the average particle diameter of the silica particles can be measured from the raw material.
- the biaxial average primary particle diameter is calculated as follows from the result of observing 20 arbitrary particles by SEM. That is, for example, when colloidal silica particles having a solid content concentration of 5 to 40% by mass dispersed in water are taken as an example, a chip obtained by cutting a wafer with a patterned wiring into 2 cm squares in a dispersion of colloidal silica particles. After soaking for about 30 seconds, the chip is rinsed with pure water for about 30 seconds and blown with nitrogen.
- the chip is placed on a sample stage for SEM observation, an acceleration voltage of 10 kV is applied, the silica particles are observed at a magnification of 100,000, and an image is taken.
- 20 silica particles are arbitrarily selected from the obtained image, and the average of the particle diameters of these particles is defined as the average particle diameter.
- a rectangle (circumscribed rectangle L) circumscribing the silica particle P and arranged so that its long side is the longest is led.
- the long side of the circumscribed rectangle L is X
- the short side is Y
- the biaxial average primary particle diameter is calculated as (X + Y) / 2, and is defined as the particle diameter of the particle.
- the number of silanol groups per gram of the silica particles is, for example, 10 ⁇ 10 18 atoms / g or more from the viewpoint of having good reactivity and easily imparting excellent water repellency and adhesion at low temperature and in a short time. It may be 50 ⁇ 10 18 pieces / g or more, or 100 ⁇ 10 18 pieces / g or more.
- the number of silanol groups per gram of the silica particles is, for example, 1000 ⁇ 10 18 or less / g or less from the viewpoint of easily suppressing abrupt gelation during processing and easily obtaining a uniform water-repellent film and / or water-repellent particles.
- the number of silanol groups per gram of the silica particles may be, for example, 10 ⁇ 10 18 to 1000 ⁇ 10 18 pcs / g, and 50 ⁇ 10 18 to 800 ⁇ 10 18 pcs / g. It may be 100 ⁇ 10 18 to 700 ⁇ 10 18 pieces / g.
- the content of the silica particles is from the viewpoint of improving the reactivity of the treatment agent, and from the viewpoint of easily imparting excellent water repellency and adhesion at a low temperature for a short time, with respect to 100 parts by mass of the total amount of the liquid composition, For example, 0.01 mass part or more may be sufficient, 0.1 mass part or more may be sufficient, and 0.5 mass part or more may be sufficient.
- the content of the silica particles is such that a water-repellent film and / or water-repellent particles having an appropriate hardness is easily obtained, and the durability against thermal shock and scratches is easily improved, with respect to 100 parts by mass of the total amount of the liquid composition.
- the content of the silica particles may be, for example, 0.01 to 30 parts by mass or 0.1 to 20 parts by mass with respect to 100 parts by mass of the total amount of the liquid composition. It may be 0.5 to 10 parts by mass.
- the liquid composition may further contain, for example, a silicon compound other than the polysiloxane compound (excluding the polysiloxane compound) from the viewpoint of further improving water repellency and adhesion. That is, the liquid composition is at least one selected from the group consisting of a silane monomer having a hydrolyzable functional group or a condensable functional group, and a hydrolysis product of a silane monomer having a hydrolyzable functional group. (Hereinafter referred to as “silane monomer group” in some cases).
- silane monomer group a hydrolysis product of a silane monomer having a hydrolyzable functional group.
- the number of silicon atoms in the silane monomer can be 1-6.
- the silane monomer having a hydrolyzable functional group is not particularly limited, and examples thereof include alkyl silicon alkoxides. Among alkyl silicon alkoxides, those having 3 or less hydrolyzable functional groups can further improve water resistance. Examples of such alkyl silicon alkoxides include monoalkyltrialkoxysilanes, monoalkyldialkoxysilanes, dialkyldialkoxysilanes, monoalkylmonoalkoxysilanes, dialkylmonoalkoxysilanes, and trialkylmonoalkoxysilanes. Examples thereof include methyltrimethoxysilane, methyldimethoxysilane, dimethyldimethoxysilane, and ethyltrimethoxysilane.
- the silane monomer having a condensable functional group is not particularly limited.
- silane tetraol, methyl silane triol, dimethyl silane diol, phenyl silane triol, phenyl methyl silane diol, diphenyl silane diol, n-propyl silane triol examples include hexyl silane triol, octyl silane triol, decyl silane triol, and trifluoropropyl silane triol.
- the silane monomer having a hydrolyzable functional group or a condensable functional group may further have the above-described reactive group different from the hydrolyzable functional group and the condensable functional group.
- silane monomers having reactive groups include vinyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropylmethyldimethoxysilane, N-phenyl-3-amino Propyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, and the like can also be used.
- silane monomer having a condensable functional group and having a reactive group vinyl silane triol, 3-glycidoxy propyl silane triol, 3-glycidoxy propyl methyl silane diol, 3-methacryloxy propyl silane triol, 3-methacryloxypropylmethylsilanediol, 3-acryloxypropylsilanetriol, 3-mercaptopropylsilanetriol, 3-mercaptopropylmethylsilanediol, N-phenyl-3-aminopropylsilanetriol, N-2- (aminoethyl ) -3-Aminopropylmethylsilanediol and the like can also be used.
- bistrimethoxysilylmethane bistrimethoxysilylethane
- bistrimethoxysilylhexane ethyltrimethoxysilane
- vinyltrimethoxysilane etc.
- silane monomers having a hydrolyzable functional group or a condensable functional group and hydrolysis products of silane monomers having a hydrolyzable functional group may be used alone or in combination of two or more. May be.
- silane monomers having hydrolyzable functional groups may exist as hydrolysis products in the liquid composition.
- the silane monomer having the functional group and the hydrolysis product thereof may be mixed.
- all of the hydrolyzable functional groups in the molecule may be hydrolyzed or partially hydrolyzed.
- the total amount of the liquid composition may be 0.01 parts by mass or more, or 0.1 parts by mass or more with respect to 100 parts by mass of the total amount of the liquid composition. It may be 0.5 parts by mass or more.
- the content of the polysiloxane compound group is such that a water-repellent film and / or water-repellent particles having an appropriate hardness are easily obtained, and the total amount of the liquid composition is 100 parts by mass from the viewpoint of easily improving durability against thermal shock and scratches.
- the content of the polysiloxane compound group may be, for example, 0.01 to 50 parts by mass or 0.1 to 30 parts by mass with respect to 100 parts by mass of the total amount of the liquid composition. It may be 0.5 to 10 parts by mass.
- the treatment agent of this embodiment further contains a silane monomer group in the liquid composition
- the content of the polysiloxane compound group and the content of the silane monomer group (hydrolyzable functional group or condensable functional group) has a good compatibility with the viewpoint that the water repellency can be further improved. From the viewpoint of being easily obtained, it may be, for example, 1: 0.1 or more, or 1: 1 or more.
- the ratio of the content of these compounds is, for example, 1:10 or less from the viewpoint of easily obtaining a water-repellent film and / or water-repellent particles having an appropriate hardness and easily improving durability against thermal shock and scratches. It may be 1: 5 or less. From these viewpoints, the ratio of the content of the polysiloxane compound group and the content of the silane monomer group may be, for example, 1: 0.1 to 1:10, or 1: 1 to 1: 5. There may be.
- the total content of the polysiloxane compound group and the silane monomer group may be, for example, 0.01 parts by mass or more with respect to 100 parts by mass of the total amount of the liquid composition, from the viewpoint that water repellency can be further improved. 0.1 mass part or more may be sufficient, and 0.5 mass part or more may be sufficient. From the viewpoint of easily obtaining a water-repellent film and / or water-repellent particles having an appropriate hardness and easily improving durability against thermal shock and scratches, the total sum of the contents is based on 100 parts by mass of the total amount of the liquid composition. For example, it may be 60 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, or 10 parts by mass or less.
- the total content of the polysiloxane compound group and the silane monomer group may be, for example, 0.01 to 60 parts by mass with respect to 100 parts by mass of the total amount of the liquid composition, and 0.01 to It may be 30 parts by mass, 0.1 to 20 parts by mass, or 0.5 to 10 parts by mass.
- the ratio of the content of the polysiloxane compound group and the silane monomer group can be within the above range.
- the treatment agent of this embodiment may contain airgel particles from the viewpoint of improving water repellency. That is, the liquid composition comprises airgel particles, a polysiloxane compound having a hydrolyzable functional group or a condensable functional group, and a hydrolysis product of the polysiloxane compound having the hydrolyzable functional group. And at least one selected from the group may be contained.
- the airgel is a porous body having nanometer-sized micropores. The airgel particles are considered to exhibit excellent water repellency because they have few hydroxyl groups on the surface and water does not easily enter the micropores.
- airgel particles conventionally known airgel particles can be used without particular limitation, but may be airgel particles formed using a polysiloxane compound, a silane monomer, or the like contained in the liquid composition as a raw material.
- airgel (particles) can be obtained by drying a wet gel that is a condensate of a sol containing a polysiloxane compound or the like.
- the average primary particle diameter of the airgel particles is, for example, from 0.1 to 10,000 nm, from 1 to 1000 nm, or from 2 to 100 nm, from the viewpoint that good water repellency is easily obtained. Good.
- the content of the airgel particles may be, for example, 0.1 to 10 parts by mass with respect to 100 parts by mass of the total amount of the liquid composition, from the viewpoint that good dispersibility is easily obtained. It may be part by mass or 0.8 to 3 parts by mass.
- the processing agent according to another embodiment may include an aspect including a water repellent component.
- the water repellent component may be, for example, a condensate of the liquid composition described so far.
- the shape of the water repellent component according to the present embodiment may be, for example, a particulate shape.
- specific embodiments of the treatment agent containing a water repellent component will be described as the second to fourth embodiments.
- the treatment agent of the present embodiment may contain a water repellent component containing polysiloxane having a main chain containing a siloxane bond (Si—O—Si).
- the water-repellent component can have the following M unit, D unit, T unit or Q unit as a structural unit.
- R represents an atom (hydrogen atom or the like) or an atomic group (alkyl group or the like) bonded to a silicon atom.
- the M unit is a unit composed of a monovalent group in which a silicon atom is bonded to one oxygen atom.
- the D unit is a unit composed of a divalent group in which a silicon atom is bonded to two oxygen atoms.
- the T unit is a unit composed of a trivalent group in which a silicon atom is bonded to three oxygen atoms.
- the Q unit is a unit composed of a tetravalent group in which a silicon atom is bonded to four oxygen atoms. Information on the content of these units can be obtained by Si-NMR.
- the treatment agent of this embodiment is a signal derived from Q and T when the silicon-containing binding units Q, T and D are defined as follows in the solid 29 Si-NMR spectrum measured using the DD / MAS method.
- the ratio Q + T of the area and the signal area derived from D: a water repellent component having D of 1: 0.01 to 1: 1.00 may be contained.
- Q A silicon-containing bond unit having four oxygen atoms bonded to one silicon atom.
- T A silicon-containing bond unit having three oxygen atoms bonded to one silicon atom and one hydrogen atom or monovalent organic group.
- D A silicon-containing bond unit having two oxygen atoms bonded to one silicon atom and two hydrogen atoms or two monovalent organic groups.
- the organic group is a monovalent organic group in which an atom bonded to a silicon atom is a carbon atom.
- Such a treatment agent is excellent in water repellency and heat insulating properties, and also in excellent adhesion to fibers.
- the ratio Q + T: D between the signal area derived from Q and T and the signal area derived from D may be, for example, 1: 0.01 to 1: 0.70, and 1: 0.01 to 1 : 0.50, 1: 0.02 to 1: 0.50, or 1: 0.03 to 1: 0.50.
- the ratio Q + T: D between the signal area derived from Q and T and the signal area derived from D may be, for example, 1: 0.01 to 1: 0.70, and 1: 0.01 to 1 : 0.50, 1: 0.02 to 1: 0.50, or 1: 0.03 to 1: 0.50.
- the “oxygen atom” in the following Q, T, and D is an oxygen atom that mainly bonds between two silicon atoms, but may be an oxygen atom having a hydroxyl group bonded to a silicon atom, for example.
- the “organic group” is a monovalent organic group in which an atom bonded to a silicon atom is a carbon atom, and examples thereof include an unsubstituted or substituted monovalent organic group having 1 to 10 carbon atoms. Examples of the unsubstituted monovalent organic group include hydrocarbon groups such as an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group, and an aralkyl group.
- Examples of the substituted monovalent organic group include hydrocarbon groups (substituted organic groups) in which hydrogen atoms of these hydrocarbon groups are substituted with halogen atoms, predetermined functional groups, predetermined functional group-containing organic groups, or the like. And hydrocarbon groups in which ring hydrogen atoms such as alkyl groups, aryl groups, and aralkyl groups are substituted with alkyl groups.
- Examples of the halogen atom include a chlorine atom and a fluorine atom (that is, a halogen atom-substituted organic group such as a chloroalkyl group and a polyfluoroalkyl group).
- Examples of the functional group include a hydroxyl group, a mercapto group, a carboxyl group, an epoxy group, an amino group, a cyano group, an acryloyloxy group, and a methacryloyloxy group.
- Examples of the functional group-containing organic group include an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a glycidyl group, an epoxycyclohexyl group, an alkylamino group, a dialkylamino group, an arylamino group, and an N-aminoalkyl-substituted aminoalkyl group. Is mentioned.
- the signal area ratio can be confirmed by a solid 29 Si-NMR spectrum.
- the measurement method of solid 29 Si-NMR is not particularly limited, and examples thereof include CP / MAS method and DD / MAS method.
- DD / MAS method is adopted from the viewpoint of quantitativeness. ing.
- the chemical shifts of silicon-containing bond units Q, T, and D in the solid 29 Si-NMR spectrum are in the ranges of Q unit: ⁇ 90 to ⁇ 120 ppm, T unit: ⁇ 45 to ⁇ 80 ppm, D unit: 0 to ⁇ 40 ppm, respectively.
- Q unit ⁇ 90 to ⁇ 120 ppm
- T unit ⁇ 45 to ⁇ 80 ppm
- D unit 0 to ⁇ 40 ppm
- FIG. 2 is a diagram showing a solid 29 Si-NMR spectrum of the water-repellent part of the water-repellent fiber sheet 7 measured using the DD / MAS method used in the examples described later.
- the signals of the silicon-containing bonding units Q, T, and D can be separated by solid-state 29 Si-NMR using the DD / MAS method.
- a method for calculating the signal area ratio will be described with reference to FIG.
- a Q unit signal derived from silica is observed in a chemical shift range of ⁇ 90 to ⁇ 120 ppm.
- signals of T units derived from the polysiloxane compound and the trimethoxysilane reactant are observed in the chemical shift range of 0 to ⁇ 40 ppm.
- signals of D units derived from the polysiloxane compound and the dimethyldimethoxysilane reactant are observed.
- the signal area (integrated value) is obtained by integrating the signal in each chemical shift range.
- the signal area ratio Q + T: D in FIG. 2 is calculated as 1: 0.42.
- the signal area is calculated using general spectrum analysis software (for example, NMR software “TopSpin” manufactured by Bruker (TopSpin is a registered trademark)).
- the processing agent of this embodiment may contain a water repellent component including a compound having a structure represented by the following formula (1).
- the water repellent component according to the present embodiment can include a compound having a structure represented by the following formula (1a) as a structure including the structure represented by the formula (1).
- the condensate of the liquid composition containing the polysiloxane compound having the structure represented by the formula (A) includes a compound having a structure represented by the formula (1) and the formula (1a) in the skeleton.
- a water repellent component may be included.
- R 1 and R 2 each independently represent an alkyl group or an aryl group
- R 3 and R 4 each independently represent an alkylene group.
- examples of the aryl group include a phenyl group and a substituted phenyl group.
- the substituent of the substituted phenyl group include an alkyl group, a vinyl group, a mercapto group, an amino group, a nitro group, and a cyano group.
- p represents an integer of 1 to 50.
- two or more R 1 s may be the same or different, and similarly, two or more R 2 s may be the same or different.
- two R 3 s may be the same or different, and similarly, two R 4 s may be the same or different.
- R 1 and R 2 each independently include an alkyl group having 1 to 6 carbon atoms, a phenyl group, and the like. And a methyl group.
- R 3 and R 4 each independently include an alkylene group having 1 to 6 carbon atoms, and examples of the alkylene group include an ethylene group and a propylene group. Is mentioned.
- p may be 2 to 30, or 5 to 20.
- the treatment agent of this embodiment has a ladder-type structure including a column part and a bridge part, and the bridge part contains a water repellent component including a compound represented by the following formula (2). Also good.
- the water repellent component contains a compound having such a ladder structure in the skeleton, the heat insulating property and water repellency can be further improved and the mechanical strength can be improved. That is, the treatment agent of this embodiment has excellent heat insulating properties, water repellency and durability due to the ladder structure.
- the condensate of the liquid composition containing the polysiloxane compound having the structure represented by the above formula (B) has a ladder structure having a bridge portion represented by the formula (2) in the skeleton.
- a water repellent component containing can be included.
- the “ladder structure” has two struts and bridges connecting the struts (having a so-called “ladder” form). It is.
- the ladder structure may be an embodiment included in a part of the compound.
- R 5 and R 6 each independently represents an alkyl group or an aryl group, and b represents an integer of 1 to 50.
- examples of the aryl group include a phenyl group and a substituted phenyl group.
- examples of the substituent of the substituted phenyl group include an alkyl group, a vinyl group, a mercapto group, an amino group, a nitro group, and a cyano group.
- b is an integer of 2 or more
- two or more R 5 s may be the same or different, and similarly two or more R 6 s are each the same. May be different.
- the structure of the column part and its chain length, and the interval of the structure of the bridge part are not particularly limited, but from the viewpoint of further improving the water repellency, mechanical strength and durability, the ladder structure has the following general formula: There is a ladder structure represented by (3).
- R 5 , R 6 , R 7 and R 8 each independently represents an alkyl group or an aryl group
- a and c each independently represents an integer of 1 to 3000
- b is 1 to 50 Indicates an integer.
- examples of the aryl group include a phenyl group and a substituted phenyl group.
- examples of the substituent of the substituted phenyl group include an alkyl group, a vinyl group, a mercapto group, an amino group, a nitro group, and a cyano group.
- b is an integer of 2 or more
- two or more R 5 s may be the same or different
- similarly two or more R 6 s are each the same. May be different.
- when a is an integer of 2 or more
- two or more R 7 s may be the same or different.
- when c is an integer of 2 or more, 2 or more R 8 may be the same or different.
- R 5 , R 6 , R 7 and R 8 (however, R 7 and R 8 are only in formula (3)) Each independently includes an alkyl group having 1 to 6 carbon atoms, a phenyl group, and the like, and examples of the alkyl group include a methyl group.
- a and c may each independently be, for example, 6 to 2000, or 10 to 1000.
- b may be, for example, 2 to 30, or 5 to 20.
- the water repellent component contained in the treatment agent may be composed of airgel from the viewpoint of improving water repellency. Since airgel has a large porosity, it is considered that the water-repellent component (and the water-repellent film and water-repellent particles formed thereby) composed of aerogel has a low refractive index and high transparency.
- the water-repellent fiber is obtained by treating the fiber with the treatment agent, and the water-repellent fiber sheet is obtained by treating the fiber sheet with the treatment agent.
- the water-repellent fiber sheet can also be obtained using water-repellent fibers treated with a treating agent. Since both the water-repellent fiber and the water-repellent fiber sheet are obtained by surface treatment of the surface to be treated using the treatment agent, they can be referred to as a surface-treated fiber and a surface-treated fiber sheet, respectively.
- Such water-repellent fibers and water-repellent fiber sheets are excellent in water repellency and heat insulating properties.
- a water-repellent part is formed on the treated surface of the fiber and the fiber sheet, respectively, and the water-repellent part contains a dried product of the treatment agent. If the treatment agent contains a condensate of the above liquid composition, it is considered that the condensation reaction further proceeds when the water repellent part is formed, and the treatment agent is the above liquid composition itself. In some cases, it is considered that a condensation reaction occurs when the water repellent part is formed. Therefore, it can be said that the water repellent part contains a reaction product of the treatment agent.
- the water repellent part also has a function as a heat insulating part, for example.
- the water repellent part may have a form including at least one of a water repellent film and water repellent particles.
- the water-repellent fiber and the water-repellent fiber sheet of the present embodiment have a water-repellent part (heat insulating part) containing a dried product of the treatment agent of the present embodiment, thereby being excellent in water repellency and heat insulating properties, and a surface to be treated. Excellent adhesion to water repellent part.
- Such water-repellent fibers and water-repellent fiber sheets are also excellent in durability.
- the water-repellent fiber and the water-repellent fiber sheet of the present embodiment may be formed by forming a water-repellent film and / or water-repellent particles on the treated surface of the fiber with the above-described treatment agent.
- the preferable form of the water-repellent part (water-repellent particles or the like) formed on the surface to be treated may be the same as the above-described water-repellent component, for example.
- the fiber (water-repellent fiber) of the present embodiment may include, for example, a water-repellent part including a compound having a structure represented by the above formula (1), and includes a support part and a bridge part. It has a ladder structure, and the bridge portion may include a water repellent part containing a compound represented by the following formula (2), and includes a compound having a structure represented by the above formula (3).
- a water repellent part may be provided.
- the water-repellent part (water-repellent film, water-repellent particles, etc.) formed on the treated surface of the fiber (water-repellent fiber) may contain an airgel from the viewpoint of further improving the water repellency. That is, for example, the water-repellent film and the water-repellent particles formed on the surface to be processed may be a film containing an airgel and a particle containing an airgel, respectively.
- FIG. 3 is a diagram schematically showing a fiber (water repellent fiber) according to an embodiment of the present invention.
- the water-repellent fiber 100 shown in FIG. 3 has a structure in which a water-repellent portion 10 made of the water-repellent film 1 is formed on the treated surface 2 a of the fiber 2.
- the water-repellent part 10 includes a dried product of the treatment agent of the present embodiment. It is considered that the water-repellent fiber 100 is provided with water repellency, which is a chemical characteristic of the water-repellent film, by providing the water-repellent portion 10 made of the water-repellent film 1 on the treated surface 2a.
- the water repellent part 10 contains the dried material of the processing agent of this embodiment, it is thought that the water repellent fiber 100 is excellent also in heat insulation.
- the water-repellent portion in this embodiment is not a monolithic film but a film formed by depositing minute water-repellent particles (water-repellent components).
- FIG. 4 is a diagram schematically showing a fiber (water repellent fiber) according to an embodiment of the present invention.
- the water-repellent fiber 200 shown in FIG. 4 has a structure in which a water-repellent part 10 made of water-repellent particles 3 is formed on the treated surface 2 a of the fiber 2.
- the water-repellent part 10 includes a dried product of the treatment agent of the present embodiment.
- the water repellent fiber 200 is provided with the water repellent portion 10 made of the water repellent particles 3 on the surface to be treated 2a, thereby obtaining a lotus effect due to the fine uneven shape, which is a physical characteristic of the water repellent particles, and high repellent properties. It is thought that it will be water-based.
- the water repellent part 10 contains the processing agent of this embodiment or the reaction material of the said processing agent, it is thought that the water-repellent fiber 200 is excellent also in heat insulation.
- the water-repellent part in this embodiment is formed by adhering water-repellent particles (water-repellent component) grown to a certain size to the surface to be treated.
- FIG. 5 is a diagram schematically showing a fiber (water-repellent fiber) according to an embodiment of the present invention.
- a water-repellent fiber 300 shown in FIG. 5 has a structure in which a water-repellent portion 10 including a water-repellent film 1 and water-repellent particles 3 is formed on a surface 2 a to be treated of the fiber 2.
- the water-repellent part 10 includes a dried product of the treatment agent of the present embodiment.
- the water-repellent fiber 300 is provided with the water-repellent part 10 including the water-repellent film 1 and the water-repellent particles 3 on the surface 2a to be treated, thereby imparting water repellency which is a chemical characteristic of the water-repellent particles.
- the water repellent part 10 contains the dried material of the processing agent of this embodiment, it is thought that the water repellent fiber 300 is also excellent in heat insulation.
- water repellent portions having various aspects can be obtained depending on the size of the particles formed from the treatment agent. That is, when the water-repellent particles are very small, a film-like appearance deposited with a predetermined thickness, and if the water-repellent particles are somewhat large, the particle-like appearance arranged individually in a plane, both of them coexist. Each has a composite appearance and is formed with a water repellent part.
- 3 to 5 show the surface-treated fiber in which the treated surface 2a of the fiber 2 is treated with the treatment agent, but this does not exclude an aspect in which the inside of the fiber 2 is treated with the treatment agent. . That is, a dried product of the treatment agent may be contained inside the fiber 2 (which may be part of the inside of the fiber 2).
- the thickness of the water-repellent film may be, for example, 1 to 500 nm, or 20 to 200 nm. By setting the thickness to 1 nm or more, further excellent water repellency can be achieved, and by setting the thickness to 500 nm or less, further excellent adhesion can be achieved.
- the size of the water-repellent particles may be, for example, 0.1 to 10,000 nm or 1 to 1000 nm.
- the size of the water-repellent particles is 0.1 nm or more, further excellent water repellency can be achieved, and when the size is 10,000 nm or less, further excellent adhesion can be achieved.
- the thickness of the water-repellent part may be, for example, 1 to 10000 nm or 20 to 1000 nm.
- the apparent surface area of the part where the water-repellent part is formed is, for example, from the viewpoint of further improving the water repellency, 20% or more, or 50% or more.
- an apparent surface area means the surface area of a fiber calculated by observing using a scanning electron microscope (SEM), for example.
- the manufacturing method of the water-repellent fiber of this embodiment processes a fiber using the processing agent of this embodiment. According to such a production method, a fiber excellent in water repellency and heat insulation can be produced.
- the specific example of the manufacturing method of a processing agent and the method of processing a fiber is demonstrated.
- processing agent production method Although the manufacturing method of a processing agent is not specifically limited, A processing agent can be manufactured with the following method, for example.
- the treatment agent of the present embodiment can be produced by, for example, a production method mainly including a blending step and a condensation reaction step.
- the blending step is a step of mixing the above polysiloxane compound and, if necessary, silica particles, a silane monomer, a solvent and the like.
- a hydrolysis reaction of a silicon compound such as a polysiloxane compound can be performed.
- Silica particles may be mixed in the state of a dispersion dispersed in a solvent.
- an acid catalyst may be further added to the solvent in order to promote the hydrolysis reaction.
- a surfactant can also be added to the solvent.
- the hydrolysis reaction is not necessarily essential.
- the solvent for example, water or a mixed solution of water and alcohols can be used.
- alcohols include methanol, ethanol, n-propanol, 2-propanol, n-butanol, 2-butanol, and t-butanol.
- the alcohols may have, for example, a low surface tension and a low boiling point.
- the alcohol having a low surface tension and a low boiling point include methanol, ethanol, 2-propanol and the like. You may use these individually or in mixture of 2 or more types.
- the acid catalyst examples include hydrofluoric acid, hydrochloric acid, nitric acid, sulfuric acid, sulfurous acid, phosphoric acid, phosphorous acid, hypophosphorous acid, bromic acid, chloric acid, chlorous acid, hypochlorous acid, and other inorganic acids; acidic phosphoric acid Acidic phosphates such as aluminum, acidic magnesium phosphate and acidic zinc phosphate; organic carboxylic acids such as acetic acid, formic acid, propionic acid, oxalic acid, malonic acid, succinic acid, citric acid, malic acid, adipic acid and azelaic acid Etc. Among these, an organic carboxylic acid is mentioned as an acid catalyst which can promote a hydrolysis reaction in consideration of environmental pollution. Examples of the organic carboxylic acids include acetic acid, but may be formic acid, propionic acid, oxalic acid, malonic acid and the like. You may use these individually or in mixture of 2 or more types.
- the addition amount of the acid catalyst may be, for example, 0.001 to 600.0 parts by mass with respect to 100 parts by mass of the total amount of the polysiloxane compound group and the silane monomer group.
- a nonionic surfactant As the surfactant, a nonionic surfactant, an ionic surfactant, or the like can be used. You may use these individually or in mixture of 2 or more types.
- nonionic surfactant for example, a compound containing a hydrophilic part such as polyoxyethylene and a hydrophobic part mainly composed of an alkyl group, a compound containing a hydrophilic part such as polyoxypropylene, and the like can be used.
- the compound containing a hydrophilic part such as polyoxyethylene and a hydrophobic part mainly composed of an alkyl group include polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene alkyl ether and the like.
- the compound having a hydrophilic portion such as polyoxypropylene include polyoxypropylene alkyl ether, a block copolymer of polyoxyethylene and polyoxypropylene, and the like.
- Examples of the ionic surfactant include a cationic surfactant, an anionic surfactant, and an amphoteric surfactant.
- Examples of the cationic surfactant include cetyltrimethylammonium bromide and cetyltrimethylammonium chloride, and examples of the anionic surfactant include sodium dodecylsulfonate.
- Examples of amphoteric surfactants include amino acid surfactants, betaine surfactants, amine oxide surfactants, and the like.
- Examples of amino acid surfactants include acyl glutamic acid.
- Examples of betaine surfactants include lauryldimethylaminoacetic acid betaine and stearyldimethylaminoacetic acid betaine.
- Examples of the amine oxide surfactant include lauryl dimethylamine oxide.
- These surfactants are considered to have an action of improving the dispersibility of the polysiloxane compound in the solvent, and in some cases silica particles, silane monomers, etc. in the blending step. These surfactants also reduce the difference in chemical affinity between the solvent in the reaction system and the growing siloxane polymer in the condensation reaction step described later, and improve dispersibility. It is thought that it has.
- the addition amount of the surfactant depends on the type of the surfactant, or the type and amount of the polysiloxane compound and the silane monomer. For example, for 100 parts by mass of the total amount of the polysiloxane compound group and the silane monomer group, The amount may be 1 to 100 parts by mass or 5 to 60 parts by mass.
- Hydrolysis in the blending step depends on the type and amount of polysiloxane compound, silane monomer, silica particles, acid catalyst, surfactant, etc. in the mixed solution, but for example, under a temperature environment of 20 to 60 ° C.
- the treatment may be performed for 10 minutes to 24 hours, or in a temperature environment of 50 to 60 ° C. for 5 minutes to 8 hours.
- the processing agent containing the liquid composition containing can be obtained.
- condensation reaction step By the condensation reaction step, a condensation reaction of a polysiloxane compound having a condensable functional group and a silane monomer, a hydrolysis reaction product obtained in the blending step, and the like can be performed.
- a base catalyst can be used to promote the condensation reaction.
- a thermally hydrolyzable compound that generates a base catalyst by thermal hydrolysis can also be added.
- Base catalysts include alkali metal hydroxides such as lithium hydroxide, sodium hydroxide, potassium hydroxide, and cesium hydroxide; ammonium compounds such as ammonium hydroxide, ammonium fluoride, ammonium chloride, and ammonium bromide; sodium metaphosphate Basic sodium phosphates such as sodium pyrophosphate and sodium polyphosphate; calcium carbonate, potassium carbonate, sodium carbonate, barium carbonate, magnesium carbonate, lithium carbonate, ammonium carbonate, copper (II) carbonate, iron (II) carbonate, carbonate Carbonates such as silver (I); bicarbonates such as calcium bicarbonate, potassium bicarbonate, sodium bicarbonate, ammonium bicarbonate; allylamine, diallylamine, triallylamine, isopropylamine, diisopropylamine, ethylamine, die Ruamine, triethylamine, 2-ethylhexylamine, 3-ethoxypropylamine, diisobutylamine, 3-
- the dehydration condensation reaction, the dealcoholization condensation reaction, or both of the polysiloxane compound group, the silane monomer group and the silica particles in the hydrolysis solution can be promoted in a shorter time.
- a treating agent can be obtained.
- the addition amount of the base catalyst may be, for example, 0.1 to 500 parts by mass or 1.0 to 200 parts by mass with respect to 100 parts by mass of the total amount of the polysiloxane compound group and the silane monomer group. .
- the addition amount of the base catalyst may be, for example, 0.1 to 500 parts by mass or 1.0 to 200 parts by mass with respect to 100 parts by mass of the total amount of the polysiloxane compound group and the silane monomer group.
- thermohydrolyzable compound is considered to generate a base catalyst by thermal hydrolysis, make the reaction solution basic, and promote the condensation reaction. Therefore, the thermohydrolyzable compound is not particularly limited as long as it can make the reaction solution basic after thermal hydrolysis, and urea; formamide, N-methylformamide, N, N-dimethylformamide, acetamide, Examples thereof include acid amides such as N-methylacetamide and N, N-dimethylacetamide; cyclic nitrogen compounds such as hexamethylenetetramine. Among these, urea is particularly easy to obtain the above-mentioned promoting effect.
- the amount of the thermohydrolyzable compound added is not particularly limited as long as it is an amount that can sufficiently promote the condensation reaction.
- the amount added may be 1 to 200 parts by mass with respect to 100 parts by mass in total of the polysiloxane compound group and the silane monomer group, and may be 2 to 150 parts by mass. A mass part may be sufficient.
- the reaction in the condensation reaction step may be performed in a sealed container so that the solvent and the base catalyst do not volatilize.
- the reaction temperature may be, for example, 20 to 90 ° C. or 40 to 80 ° C. By setting the reaction temperature to 20 ° C. or higher, the condensation reaction can be performed in a shorter time. Moreover, since it becomes easy to suppress volatilization of a solvent (especially alcohols) by making reaction temperature into 90 degrees C or less, a condensation reaction can be performed, suppressing layer separation.
- the condensation reaction time depends on the kind of the polysiloxane compound group, the silane monomer group, and the reaction temperature, but may be, for example, 2 to 480 hours or 6 to 120 hours. By setting the reaction time to 2 hours or longer, more excellent water repellency and adhesion can be achieved, and by setting it to 480 hours or shorter, layer separation can be easily suppressed.
- the condensation reaction time can be further shortened.
- the silanol groups, reactive groups, or both of the polysiloxane compound group and silane monomer group in the hydrolysis solution are combined with the silanol groups of the silica particles, hydrogen bonds, chemical bonds, or a combination of these bonds. It is presumed that it is for forming.
- the condensation reaction time may be, for example, 10 minutes to 24 hours, or 30 minutes to 12 hours. By setting the reaction time to 10 minutes or longer, more excellent water repellency and adhesion can be achieved, and by setting the reaction time to 24 hours or shorter, layer separation can be easily suppressed.
- the processing agent containing the condensate of the liquid composition containing 1 type can be obtained.
- the process agent containing the above-mentioned water repellent component can be obtained by this process.
- the size of the water-repellent particles can be adjusted by changing the condensation reaction time, the size of the silica particles, the size of the airgel particles, and the like. Thereby, the fiber of a desired aspect can be obtained.
- Method of treating fiber Although the method of processing a fiber is not specifically limited, for example, the method mainly provided with an application
- the application step is a step of applying the treatment agent to the surface to be treated (fiber surface).
- the surface to be treated may be dried after application to volatilize the solvent.
- the water repellent portion water repellent film and / or water repellent particles
- the treatment agent may be applied to the entire surface to be processed, or may be selectively applied to a part of the surface to be processed.
- the coating method is not particularly limited, and examples thereof include spin coating, dip coating, spray coating, flow coating, bar coating, and gravure coating.
- the dip coating method is preferable because it is highly productive and can be easily applied to an uneven fiber surface. These methods may be used alone or in combination of two or more.
- the treatment agent may be applied to the surface to be treated by bringing a treatment agent previously applied or impregnated into another film, cloth or the like into contact with the treated surface of the fiber.
- the application method can be freely selected according to the amount of treatment agent used, the area of the surface to be treated, characteristics, and the like.
- the temperature of the treatment agent used in the coating process may be, for example, 20 to 80 ° C. or 40 to 60 ° C. When the temperature is 20 ° C. or higher, the water repellency and adhesion tend to be further improved, and when the temperature is 80 ° C. or lower, the transparency of the water repellent part tends to be easily obtained. is there.
- the treatment time with the treatment agent can be, for example, 0.5 to 4 hours.
- the synthetic fiber manufactured by melt spinning the nonwoven fabric manufactured by the spun bond method, the melt blow method, the flash spinning method etc., natural fiber, and an inorganic fiber are mentioned.
- the material constituting the synthetic fiber and the nonwoven fabric examples include resins such as thermoplastic resins.
- resins such as thermoplastic resins.
- synthetic fibers and nonwoven fabrics include polyolefin fibers, polyester fibers, and polyamide fibers.
- the material constituting the synthetic fiber and the nonwoven fabric may be one type or two or more types. That is, the synthetic fiber and the nonwoven fabric may be a composite fiber in which two or more different types of resins are combined.
- the composite fiber for example, a fiber in which two or more kinds of resins having different melting points are combined can be used.
- the resin combination in the composite fiber include copolyester / polyester, copolypropylene / polypropylene, polypropylene / polyamide, polyethylene / polypropylene, polypropylene / polyester, and polyethylene / polyester.
- the composite fiber may be, for example, a core-sheath type composite fiber using different materials for the core part and the sheath part.
- the core part may be formed from a resin having a high melting point
- the sheath part may be formed from a resin having a low melting point.
- the resin constituting the core may be, for example, a resin that does not have a melting point and has a decomposition temperature.
- the core portion may be composed of, for example, inorganic fibers.
- the core-sheath type composite fiber may be in a form in which the surface of a fiber such as rayon fiber, acetate fiber, wool fiber, inorganic fiber or the like is coated with a thermoplastic resin.
- a fiber such as rayon fiber, acetate fiber, wool fiber, inorganic fiber or the like
- thermoplastic resin examples include a dipping method and a coating method.
- the inorganic fiber constituting the core portion of the core-sheath type composite fiber examples include carbon fiber, glass fiber, ceramic fiber, and metal fiber. From the viewpoint of having a high melting point, the inorganic fibers may be, for example, glass fibers, ceramic fibers, and metal fibers.
- Examples of natural fibers include cellulose fibers, cotton, hemp, wool, and silk.
- Examples of the inorganic fiber include glass fiber, silica fiber, alumina fiber, ceramic fiber, metal fiber (steel fiber, stainless steel fiber, etc.) and carbon fiber. These fibers can be used alone or in combination of two or more.
- the fibers may be, for example, glass fibers, carbon fibers, polyester fibers, and polyamide fibers from the viewpoint of strength and durability, and may be, for example, glass fibers and polyester fibers from the viewpoint of economy.
- the cross-sectional shape and surface shape of the fiber are not particularly limited and can be any shape.
- the fiber diameter (average diameter) and the fiber length are not particularly limited, but the fiber diameter may be, for example, 0.1 ⁇ m to 3 mm, or 0.5 ⁇ m to 500 ⁇ m. When the fiber diameter is 0.1 ⁇ m or more, an appropriate mechanical strength is easily obtained, and when the fiber diameter is 3 mm or less, the heat insulation tends to be further improved.
- the fiber diameter refers to the diameter of a circle having the same area as the cross-sectional area of the fiber.
- the adhesion of the water repellent part can be further improved by drying the obtained fiber and evaporating the solvent.
- the drying temperature at this time is not particularly limited and varies depending on the heat-resistant temperature of the surface to be treated, but may be, for example, 60 to 250 ° C. or 120 to 180 ° C. By making the said temperature 60 degreeC or more, the outstanding adhesiveness can be achieved, and deterioration by a heat
- the washing process is a process of washing the fibers obtained in the coating process. By performing this step, impurities such as unreacted substances and by-products in the water-repellent part can be reduced, and a water-repellent part with higher purity can be obtained.
- the washing step can be repeated using, for example, water and / or an organic solvent. At this time, washing efficiency can be improved by heating.
- organic solvent examples include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, acetone, methyl ethyl ketone, 1,2-dimethoxyethane, acetonitrile, heptane, hexane, toluene, diethyl ether, chloroform, ethyl acetate, tetrahydrofuran,
- organic solvents such as methylene chloride, N, N-dimethylformamide, dimethyl sulfoxide, acetic acid and formic acid can be used. You may use said organic solvent individually or in mixture of 2 or more types.
- Organic solvents generally have very low mutual solubility with water. Therefore, when it wash
- examples of hydrophilic organic solvents include methanol, ethanol, 2-propanol, acetone, methyl ethyl ketone, 1,2-dimethoxyethane and the like. Methanol, ethanol, methyl ethyl ketone and the like are preferable from the viewpoint of economy.
- the amount of water and / or organic solvent used in the washing step may be, for example, 3 to 10 times the total mass of the water repellent part.
- the washing can be repeated until the moisture content on the fiber surface becomes 10% by mass or less.
- the washing temperature can be a temperature not higher than the boiling point of the solvent used for washing. For example, when methanol is used, it may be about 20 to 60 ° C. Washing efficiency can also be improved by heating.
- the washing time can be 3 to 30 minutes, for example.
- the pre-drying step is a step of pre-drying the fibers washed by the washing step.
- the drying method is not particularly limited, and for example, a known drying method under atmospheric pressure can be used.
- the drying temperature varies depending on the heat resistant temperature of the fiber and the type of cleaning solvent.
- the drying temperature may be, for example, 20 to 250 ° C. or 60 to 180 ° C. from the viewpoint that the evaporation rate of the solvent is sufficiently high and deterioration of the water repellent part is easily prevented.
- the drying time varies depending on the mass of the water repellent part and the drying temperature, but may be, for example, 1 to 24 hours.
- An aging process is a process of heat-aging the water-repellent part dried by the preliminary drying process. Thereby, the final water-repellent fiber can be obtained. By performing the aging process, the water repellency and adhesion of the water repellent fiber are further improved.
- This step can be performed as additional drying after the preliminary drying step.
- the hydrophilic group in the water repellent part is decreased, and it is considered that the water repellency is further improved.
- the water repellent part undergoes volume shrinkage in the preliminary drying step and the transparency is lowered, the volume may be restored by spring back to improve the transparency.
- the aging temperature varies depending on the heat-resistant temperature of the fiber, but may be, for example, 100 to 250 ° C. or 120 to 180 ° C. By setting the aging temperature to 100 ° C. or higher, more excellent water repellency and adhesion can be achieved, and by setting the aging temperature to 250 ° C. or lower, deterioration due to heat can be suppressed.
- the aging time varies depending on the mass of the water-repellent part and the aging temperature, but may be, for example, 1 to 10 hours or 2 to 6 hours. By setting the aging time to 1 hour or longer, more excellent water repellency and adhesion can be easily achieved, and by setting the aging time to 10 hours or shorter, productivity is hardly lowered.
- the manufacturing method of a processing agent and water-repellent fiber is not limited to this.
- the manufacturing method of a water-repellent fiber sheet is demonstrated.
- the method provided with the process of manufacturing a fiber sheet using the water-repellent fiber obtained by said manufacturing method is mentioned.
- the water-repellent fiber sheet can also be produced by, for example, a method of producing a water-repellent fiber and then processing the water-repellent fiber into a sheet with a paper machine, a loom, a knitting machine, or the like. That is, the fiber sheet (water-repellent fiber sheet) of the present embodiment may include the fiber (water-repellent fiber) of the present embodiment. According to such a manufacturing method, a fiber sheet excellent in water repellency and heat insulating properties can be manufactured.
- the method for producing a water-repellent fiber sheet may be a method of treating a fiber sheet using the treatment agent of the present embodiment (impregnating the treatment agent with the fiber sheet). According to such a manufacturing method, a fiber sheet excellent in water repellency and heat insulating properties can be manufactured. Although it does not specifically limit as a manufacturing method of such a water-repellent fiber sheet, For example, in the manufacturing method of the above-mentioned water-repellent fiber, the method of using a fiber sheet instead of a fiber is mentioned.
- the fiber sheet used for the treatment examples include sheet-like fibers such as a woven fabric, a knitted fabric, and a nonwoven fabric sheet.
- the woven fabric and the knitted fabric may be, for example, a fiber processed by a loom or a knitting machine.
- the nonwoven fabric sheet may be a fiber sheet obtained by, for example, a dry method, a spunbond method, a melt blow method, a flash spinning method, a wet method, or the like.
- the fiber sheet is obtained by heating a sheet obtained by adding a composite fiber or the like in which two or more kinds of resins having different melting points and an adhesive fiber are combined to the above-described sheet-like fiber (fiber web or the like). What processed and joined between fibers may be used.
- the fiber sheet may be, for example, a sheet in which a plurality of sheet-like fibers (for example, a fiber web) are entangled by a mechanical entanglement process such as water entanglement or needle punch. Further, it may be bonded by a heated roll. For example, a partially bonded fiber sheet may be obtained by using a smooth roll and an uneven roll.
- the fiber sheet may be formed by, for example, stacking and integrating a plurality of different types of fiber sheets.
- the manufacturing method of a water-repellent fiber sheet of this embodiment is not limited to this.
- Example 1 [Treatment agent 1] 40.0 parts by mass of carbinol-modified siloxane “XF42-C5277” (product name, manufactured by Momentive Co., Ltd.) as a polysiloxane compound, and cetyltrimethylammonium bromide (manufactured by Wako Pure Chemical Industries, Ltd.) as a cationic surfactant: 6.4 parts by mass of CTAB ”) and 51.6 parts by mass of a 100 mM aqueous acetic acid solution were mixed and stirred at 25 ° C. for 2 hours. To this was added 2.0 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain Treatment Agent 1.
- Water repellent fiber 1 Glass fiber FS19W-N (manufactured by Nippon Inorganic Co., Ltd., product name) having a fiber diameter of 3.5 ⁇ m was dipped in the treatment agent 1 and treated at 60 ° C. for 2 hours. Thereafter, the treated glass fiber was dipped in methanol and washed at 25 ° C. for 5 minutes. Next, it was dipped in methyl ethyl ketone and washed at 25 ° C. for 5 minutes. The washed glass fiber was dried at 120 ° C. for 1 hour under normal pressure, and then aged at 150 ° C. for 6 hours to obtain water-repellent fiber 1.
- the water-repellent fiber sheet 1 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 1 was prepared by filtering and drying.
- Example 2 [Treatment agent 2] 20.0 parts by mass of polysiloxane compound A as a polysiloxane compound, 3.2 parts by mass of CTAB as a cationic surfactant and 75.8 parts by mass of a 100 mM aqueous acetic acid solution were mixed and stirred at 25 ° C. for 2 hours. To this was added 1.0 part by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain treatment agent 2.
- the “polysiloxane compound A” was synthesized as follows. First, in a 1 liter three-necked flask equipped with a stirrer, a thermometer and a Dimroth condenser, 100.0 parts by mass of hydroxy-terminated dimethylpolysiloxane “XC96-723” (product name, manufactured by Momentive), methyl 181.3 parts by mass of trimethoxysilane and 0.50 parts by mass of t-butylamine were mixed and reacted at 30 ° C. for 5 hours. Thereafter, this reaction solution was heated at 140 ° C. for 2 hours under reduced pressure of 1.3 kPa to remove volatile components, thereby obtaining a bifunctional alkoxy-modified polysiloxane compound (polysiloxane compound A) at both ends.
- Water repellent fiber 2 Except having changed processing agent 1 into processing agent 2, and having changed glass fiber into glass fiber FM600 (Nippon Inorganic Co., Ltd., product name) with a fiber diameter of 1.0 micrometer, it is the same as that of Example 1. Water repellent fiber 2 was obtained.
- Water repellent fiber sheet 2 Except for changing the water-repellent fiber 1 to the water-repellent fiber 2, the water-repellent fiber sheet 2 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 2 is the same as in Example 1. Was made.
- Example 3 A PL-2L solution adjusted to 20.0 parts by mass of XF42-C5277 as a polysiloxane compound, 3.2 parts by mass of CTAB as a cationic surfactant and an acetic acid concentration of 100 mM as a silica particle-containing raw material (Details of PL-2L) Is described in Table 1. 75.0 parts by mass of the silica particle-containing raw material was mixed and stirred at 25 ° C. for 2 hours. To this was added 2.0 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain treatment agent 3.
- Water repellent fiber 3 A water-repellent fiber 3 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the treatment agent 3.
- Water repellent fiber sheet 3 Except for changing the water-repellent fiber 2 to the water-repellent fiber 3, the water-repellent fiber sheet 3 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 3 is the same as in Example 2. Was made.
- Example 4 [Treatment agent 4] 20.0 parts by mass of polysiloxane compound B as a polysiloxane compound, 3.2 parts by mass of CTAB as a cationic surfactant and 49.8 parts by mass of a 100 mM aqueous acetic acid solution, and an acetic acid concentration of 100 mM as a silica particle-containing raw material 25.0 parts by mass of the PL-2L solution was mixed and stirred at 25 ° C. for 2 hours. To this was added 2.0 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain treatment agent 4.
- the “polysiloxane compound B” was synthesized as follows. First, in a 1 liter three-necked flask equipped with a stirrer, a thermometer, and a Dimroth condenser, 100.0 parts by mass of XC96-723, 202.6 parts by mass of tetramethoxysilane and 0. 50 parts by mass was mixed and reacted at 30 ° C. for 5 hours. Thereafter, this reaction solution was heated at 140 ° C. for 2 hours under a reduced pressure of 1.3 kPa to remove volatile components, thereby obtaining a trifunctional alkoxy-modified polysiloxane compound (polysiloxane compound B) at both ends.
- Water repellent fiber 4 A water-repellent fiber 4 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the treatment agent 4.
- Water repellent fiber sheet 4 Except for changing the water-repellent fiber 2 to the water-repellent fiber 4, the water-repellent fiber sheet 4 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 4 is the same as in Example 2. Was made.
- Water repellent fiber 5 A water-repellent fiber 5 was obtained in the same manner as in Example 1 except that the treatment agent 1 was changed to the treatment agent 5.
- Water repellent fiber sheet 5 Except for changing the water-repellent fiber 1 to the water-repellent fiber 5, the water-repellent fiber sheet 5 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 5 is the same as in Example 1. Was made.
- Example 6 [Treatment agent 6] 10.0 parts by mass of polysiloxane compound A as the polysiloxane compound, 15.0 parts by mass of MTMS as the silane monomer, 4.0 parts by mass of CTAB as the cationic surfactant, and 43.5 parts by mass of 100 mM acetic acid aqueous solution, In addition, 25.0 parts by mass of a PL-5L solution adjusted to an acetic acid concentration of 100 mM as a silica particle-containing raw material was mixed and stirred at 25 ° C. for 2 hours. To this was added 2.5 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain treatment agent 6.
- Water repellent fiber 6 A water repellent fiber 6 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the treatment agent 6.
- Water repellent fiber sheet 6 Except for changing the water-repellent fiber 2 to the water-repellent fiber 6, the water-repellent fiber sheet 6 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 6 is the same as in Example 2. Was made.
- Example 7 1.0 parts by mass of polysiloxane compound A as a polysiloxane compound, 3.0 parts by mass of MTMS as a silane monomer, dimethyldimethoxysilane KBM-22 (manufactured by Shin-Etsu Chemical Co., Ltd., product name: hereinafter abbreviated as “DMDMS”) 1.0 part by mass of CTAB as a cationic surfactant, 0.8 part by mass of CTAB and 88.7 parts by mass of a 100 mM acetic acid aqueous solution, and a PL-2L solution adjusted to an acetic acid concentration of 100 mM as a silica particle-containing raw material. 0 parts by mass was mixed and stirred at 25 ° C. for 2 hours. Sodium carbonate 0.5 mass part was added to this as a base catalyst, and it stirred at 60 degreeC for 2 hours, and obtained the processing agent 7.
- DDMS dimethyldimethoxysilane KBM-22
- Water repellent fiber 7 A water repellent fiber 7 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the treatment agent 7.
- Water repellent fiber sheet 7 Except for changing the water-repellent fiber 2 to the water-repellent fiber 7, the water-repellent fiber sheet 7 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 7 is the same as in Example 2. Was made.
- Example 8 [Water repellent fiber 8] A glass fiber FM600 (Nippon Inorganic Co., Ltd., product name) having a fiber diameter of 1.0 ⁇ m is dipped in the treatment agent 7 at 25 ° C. for 5 minutes, and then the glass fiber is dried at 150 ° C. for 2 hours to volatilize the solvent. I let you. The dried glass fiber was dipped in methanol and washed at 25 ° C. for 5 minutes. Next, it was dipped in methyl ethyl ketone and washed at 25 ° C. for 5 minutes. The washed glass fiber was dried at 120 ° C. for 1 hour under normal pressure, and then aged at 150 ° C. for 6 hours to obtain water-repellent fiber 8.
- Water repellent fiber sheet 8 Except for changing the water-repellent fiber 2 to the water-repellent fiber 8, the water-repellent fiber sheet 8 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 8 is the same as in Example 2. Was made.
- Example 9 [Fiber sheet] 3 g of glass fiber FM600 (Nippon Inorganic Co., Ltd., product name) having a fiber diameter of 1.0 ⁇ m, 750 g of purified water and 0.01 g of a surfactant Rakkal AL (Meisei Chemical Co., Ltd., product name) were added to a 1 L mixer TM837 (TESCOM Co., Ltd.). In addition to the product name), the mixture was stirred for 30 seconds, transferred to a 5 L beaker, further added with 3250 g of purified water and 0.04 g of the surfactant, and stirred at a rotational speed of 1000 rpm until fiber aggregation could not be visually confirmed. A fiber dispersion was obtained.
- the obtained fiber dispersion was put into a standard sheet machine paper machine (product name: Kumagai Riki Kogyo Co., Ltd., product name) equipped with a 150 mesh mesh, diluted with purified water to a total volume of 10 L, filtered, It dried and produced the fiber sheet of thickness 0.50mm which consists of a fiber with a fabric weight of 120 g / m ⁇ 2 >.
- [Treatment agent 8] 10.0 parts by mass of polysiloxane compound A as the polysiloxane compound, 15.0 parts by mass of MTMS as the silane monomer, 4.0 parts by mass of CTAB as the cationic surfactant, 69.8 parts by mass of 100 mM aqueous acetic acid solution, And 1.2 mass parts of sodium carbonate was mixed as a base catalyst, and it stirred at 25 degreeC for 6 hours, and obtained the processing agent 8.
- a water-repellent fiber 9 was obtained in the same manner as in Example 1 except that the treatment agent 1 was changed to the treatment agent 8.
- Water-repellent fiber sheet 10 Except for changing the water-repellent fiber 1 to the water-repellent fiber 9, the water-repellent fiber sheet 10 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 9 is the same as in Example 1. Was made.
- Treatment agent 9 1.0 parts by mass of polysiloxane compound A as a polysiloxane compound, 3.0 parts by mass of MTMS as a silane monomer and 1.0 part by mass of DMDMS, 0.8 parts by mass of CTAB as a cationic surfactant, 100 mM acetic acid 88.7 parts by mass of an aqueous solution, 5.0 parts by mass of a PL-2L solution adjusted to an acetic acid concentration of 100 mM as a silica particle-containing raw material, and 0.5 parts by mass of sodium carbonate as a base catalyst were mixed and mixed at 25 ° C. for 6 hours. Stirring was performed to obtain treatment agent 9.
- Water repellent fiber 10 A water-repellent fiber 10 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the treatment agent 9.
- Water repellent fiber sheet 11 Except for changing the water-repellent fiber 2 to the water-repellent fiber 10, the water-repellent fiber sheet 11 having a weight per unit area of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 10 is the same as in Example 2. Was made.
- [Treatment agent 10] 10.0 parts by mass of polysiloxane compound A as a polysiloxane compound, 15.0 parts by mass of MTMS as a silane monomer, 4.0 parts by mass of CTAB as a cationic surfactant, 69.8 parts by mass of a 100 mM aqueous acetic acid solution, and As an airgel particle, 1.0 part by mass of IC3100 (manufactured by Cabot Corporation, product name) was mixed and stirred at 25 ° C. for 2 hours. To this was added 2.0 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain treatment agent 10.
- IC3100 manufactured by Cabot Corporation, product name
- Water repellent fiber 11 A water-repellent fiber 11 was obtained in the same manner as in Example 1 except that the treatment agent 1 was changed to the treatment agent 10.
- Water repellent fiber sheet 12 Except for changing the water-repellent fiber 1 to the water-repellent fiber 11, the water-repellent fiber sheet 12 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 11 is the same as in Example 1. Was made.
- [Treatment agent 11] 1.0 parts by mass of polysiloxane compound A as a polysiloxane compound, 3.0 parts by mass of MTMS as a silane monomer and 1.0 part by mass of DMDMS, 0.8 parts by mass of CTAB as a cationic surfactant, 100 mM acetic acid 88.7 parts by mass of aqueous solution, 5.0 parts by mass of PL-2L solution adjusted to an acetic acid concentration of 100 mM as a silica particle-containing raw material, 1.0 part by mass of IC3100 as airgel particles, and 0.5% of sodium carbonate as a base catalyst A mass part was mixed, and it stirred at 25 degreeC for 6 hours, and obtained the processing agent 11.
- Water repellent fiber 12 A water-repellent fiber 12 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the treatment agent 11.
- Water repellent fiber sheet 13 Except for changing the water-repellent fiber 2 to the water-repellent fiber 12, the water-repellent fiber sheet 13 having a weight of 120 g / m 2 and a thickness of 0.50 mm made of the water-repellent fiber 12 is the same as in Example 2. Was made.
- Comparative Example 1 [Comparison treatment agent 1] 30.0 parts by mass of MTMS as a silane monomer, 2.4 parts by mass of CTAB as a cationic surfactant and 66.1 parts by mass of a 100 mM aqueous acetic acid solution were mixed and stirred at 25 ° C. for 2 hours. To this was added 1.5 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain Comparative Treatment Agent 1.
- Comparative water-repellent fiber 1 A comparative water-repellent fiber 1 was obtained in the same manner as in Example 1 except that the treating agent 1 was changed to the comparative treating agent 1.
- Comparative water-repellent fiber sheet 1 A comparative water-repellent fiber sheet 1 was obtained in the same manner as in Example 1 except that the water-repellent fiber 1 was changed to the comparative water-repellent fiber 1.
- Comparative Example 2 [Comparison treatment agent 2] 20.0 parts by mass of MTMS as a silane monomer, 15.0 parts by mass of DMDMS, 2.8 parts by mass of CTAB as a cationic surfactant, and 60.5 parts by mass of a 100 mM aqueous acetic acid solution were mixed at 25 ° C. for 2 hours. Stir. To this was added 1.7 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain Comparative Treatment Agent 2.
- Comparative water-repellent fiber 2 A comparative water-repellent fiber 2 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the comparison treatment agent 2.
- Comparative water-repellent fiber sheet 2 A comparative water-repellent fiber sheet 2 was obtained in the same manner as in Example 2 except that the water-repellent fiber 2 was changed to the comparative water-repellent fiber 2.
- Comparative Treatment Agent 3 30.0 parts by mass of fluoroalkylsilane XC98-B2472 (manufactured by Momentive, product name) as a silane monomer, 2.4 parts by mass of CTAB as a cationic surfactant, and 66.1 parts by mass of a 100 mM aqueous acetic acid solution, Stir at 25 ° C. for 2 hours. To this was added 1.5 parts by mass of sodium carbonate as a base catalyst, and the mixture was stirred at 60 ° C. for 2 hours to obtain Comparative Treatment Agent 3.
- Comparative water-repellent fiber 3 A comparative water-repellent fiber 3 was obtained in the same manner as in Example 2 except that the treatment agent 2 was changed to the comparison treatment agent 3.
- Comparative water-repellent fiber sheet 3 A comparative water-repellent fiber sheet 3 was obtained in the same manner as in Example 2 except that the water-repellent fiber 2 was changed to the comparative water-repellent fiber 3.
- Comparative Example 4 [Comparative water-repellent fiber sheet 4] A comparative water-repellent fiber sheet 4 was obtained in the same manner as in Example 9 except that the treating agent 7 was changed to the comparative treating agent 2.
- Table 1 summarizes the modes of treatment agents (types and contents of polysiloxane compounds, silane monomers, and types and contents of silica particle-containing raw materials) in each Example and Comparative Example.
- Table 2 summarizes the modes of water-repellent fiber sheets (types of treatment agents, treatment methods, and types of treatment targets) in each Example and Comparative Example.
- Table 3 summarizes the evaluation results of the measurement of the signal contact ratio according to the water contact angle measurement, the thermal conductivity measurement, and the silicon-containing bond units Q, T, and D.
- R S N ((T U ⁇ T L ) / Q) ⁇ R O
- T U represents a measurement sample top surface temperature
- T L represents the measurement sample lower surface temperature
- R O represents the thermal contact resistance of the upper and lower interfaces
- Q is shows the heat flux meter output.
- N is a proportionality coefficient, and is obtained in advance using a calibration sample.
- a material obtained by finely cutting the water-repellent fiber sheet obtained in each Example and Comparative Example was prepared, and this was packed in a ZrO 2 rotor and attached to a probe for measurement. Further, in the spectrum analysis, the line broadening coefficient was set to 2 Hz, and the signal area ratio (Q + T: D) relating to the obtained silicon-containing binding units Q, T, and D was obtained.
- each of the water-repellent fiber sheets of the examples has a water contact angle of 150 degrees or more, and is superior in water repellency compared to the untreated fiber sheet and the comparative example. Moreover, it turns out that the water-repellent fiber sheet of an Example has low heat conductivity compared with an untreated fiber sheet and a comparative example, and is excellent in heat insulation.
- the treatment agent of the present invention can impart excellent water repellency and heat insulation to the fiber.
- L circumscribed rectangle
- P silica particle, 1 ... water repellent film, 2 ... fiber, 2a ... treated surface, 3 ... water repellent particle, 10 ... water repellent part, 100, 200, 300 ... water repellent fiber.
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Abstract
Description
本明細書において、「~」を用いて示された数値範囲は、「~」の前後に記載される数値をそれぞれ最小値及び最大値として含む範囲を示す。本明細書に段階的に記載されている数値範囲において、ある段階の数値範囲の上限値又は下限値は、他の段階の数値範囲の上限値又は下限値に置き換えてもよい。本明細書に記載されている数値範囲において、その数値範囲の上限値又は下限値は、実施例に示されている値に置き換えてもよい。「A又はB」とは、A及びBのどちらか一方を含んでいればよく、両方とも含んでいてもよい。本明細書に例示する材料は、特に断らない限り、1種を単独で又は2種以上を組み合わせて用いることができる。本明細書において、組成物中の各成分の含有量は、組成物中に各成分に該当する物質が複数存在する場合、特に断らない限り、組成物中に存在する複数の物質の合計量を意味する。
本実施形態の処理剤は、繊維処理用のものである。本実施形態の処理剤としては、例えば、下記第一~第四の態様が挙げられる。各々の態様を採用することで、各々の態様に応じた撥水性及び断熱性を得ることができる。
一実施形態の処理剤は、(分子内に)加水分解性の官能基又は縮合性の官能基を有するポリシロキサン化合物、及び、該加水分解性の官能基を有するポリシロキサン化合物の加水分解生成物からなる群より選択される少なくとも一種(以下、場合により「ポリシロキサン化合物群」という)を含有する液状組成物の縮合物を含む。処理剤は、また、加水分解性の官能基又は縮合性の官能基を有するポリシロキサン化合物、及び、該加水分解性の官能基を有するポリシロキサン化合物の加水分解生成物からなる群より選択される少なくとも一種を含有する液状組成物を含んでいてもよい(処理剤が当該液状組成物であってもよい)。このような処理剤によれば、繊維に優れた撥水性及び断熱性を付与できる。上記処理剤は、繊維の被処理面に撥水部(処理部)を形成するために用いられてもよい。上記処理剤から形成される撥水部は、優れた撥水性を有すると共に、被処理面との密着性にも優れる。上記処理剤から形成される撥水部は、断熱性にも優れるため、繊維に優れた断熱機能を付与することができる。上記撥水部は、例えば、膜状の撥水部(以下、「撥水膜」ともいう)及び粒子状の撥水部(以下、「撥水粒子」ともいう)の少なくとも一方を含む形態であってもよい。すなわち、本実施形態の処理剤は、繊維の被処理面に撥水膜及び/又は撥水粒子を形成するものであってもよい。
本実施形態の処理剤は、シロキサン結合(Si-O-Si)を含む主鎖を有するポリシロキサンを含有する撥水成分を含むことかできる。当該撥水成分は、構造単位として、下記M単位、D単位、T単位又はQ単位を有することができる。
T:1個のケイ素原子に結合した酸素原子が3個と水素原子又は1価の有機基が1個の含ケイ素結合単位。
D:1個のケイ素原子に結合した酸素原子が2個と水素原子又は1価の有機基が2個の含ケイ素結合単位。
本実施形態の処理剤は、下記式(1)で表される構造を有する化合物を含む撥水成分を含有していてもよい。本実施形態に係る撥水成分は、式(1)で表される構造を含む構造として、下記式(1a)で表される構造を有する化合物を含むことができる。例えば、上記式(A)で表される構造を有するポリシロキサン化合物を含む液状組成物の縮合物には、式(1)及び式(1a)で表される構造を骨格中に有する化合物を含む撥水成分が含まれ得る。
本実施形態の処理剤は、支柱部及び橋かけ部を備えるラダー型構造を有し、前記橋かけ部が下記式(2)で表される化合物、を含む撥水成分、を含有していてもよい。撥水成分が、骨格中にこのようなラダー型構造を有する化合物を含むことにより、断熱性及び撥水性を更に向上させると共に、機械的強度を向上させることができる。すなわち、本実施形態の処理剤は、ラダー型構造に起因する優れた断熱性、撥水性及び耐久性を有している。例えば、上記式(B)で表される構造を有するポリシロキサン化合物を含む液状組成物の縮合物には、式(2)で表される橋かけ部を有するラダー型構造を骨格中に有する化合物を含む撥水成分が含まれ得る。なお、本実施形態において「ラダー型構造」とは、2本の支柱部(struts)と支柱部同士を連結する橋かけ部(bridges)とを有するもの(いわゆる「梯子」の形態を有するもの)である。本態様において、ラダー型構造は、化合物の一部に含まれる態様であってもよい。
撥水性繊維は、上記処理剤を用いて繊維を処理することにより得られ、撥水性繊維シートは、上記処理剤を用いて繊維シートを処理することにより得られる。撥水性繊維シートは、処理剤を用いて処理された撥水性繊維を用いて得ることもできる。撥水性繊維及び撥水性繊維シートとも、上記処理剤を用いた被処理面の表面処理により得られるものであるため、それぞれ表面処理繊維及び表面処理繊維シートと言うことができる。このような撥水性繊維及び撥水性繊維シートは、撥水性と断熱性とに優れる。
次に、撥水性繊維の製造方法について説明する。本実施形態の撥水性繊維の製造方法は、本実施形態の処理剤を用いて繊維を処理するものである。このような製造方法によれば、撥水性と断熱性とに優れる繊維を製造できる。以下、処理剤の製造方法及び繊維を処理する方法の具体例について説明する。
処理剤の製造方法は、特に限定されないが、処理剤は、例えば、以下の方法により製造することができる。
配合工程は、上記のポリシロキサン化合物、及び必要に応じシリカ粒子、シランモノマー、溶媒等を混合する工程である。この工程により、ポリシロキサン化合物等のケイ素化合物の加水分解反応を行うことができる。なお、シリカ粒子は、溶媒に分散された分散液の状態で混合してもよい。本工程においては、加水分解反応を促進させるため、溶媒中に更に酸触媒を添加してもよい。また、溶媒中に界面活性剤を添加することもできる。縮合性の官能基を有するケイ素化合物を用いる場合、加水分解反応は必ずしも必須ではない。
縮合反応工程により、縮合性の官能基を有するポリシロキサン化合物及びシランモノマー、配合工程で得られた加水分解反応物等の縮合反応を行うことができる。本工程では、縮合反応を促進させるため、塩基触媒を用いることができる。また、本工程において、熱加水分解により塩基触媒を発生する熱加水分解性化合物を添加することもできる。
繊維を処理する方法は、特に限定されないが、例えば、塗布工程と、洗浄工程と、乾燥工程(予備乾燥工程及びエージング工程)とを主に備える方法が挙げられる。
塗布工程は、上記処理剤を繊維の被処理面(繊維の表面)に塗布する工程である。また、場合により、塗布後に被処理面を乾燥して溶媒を揮発させてもよい。例えば、本工程によって、被処理面に撥水部(撥水膜及び/又は撥水粒子)を形成することができる。処理剤は、被処理面全体に塗布してもよく、被処理面の一部に選択的に塗布してもよい。
洗浄工程は、塗布工程で得られた繊維を洗浄する工程である。本工程を施すことにより、撥水部中の未反応物、副生成物等の不純物を低減し、より純度の高い撥水部を得ることができる。
予備乾燥工程は、洗浄工程により洗浄された繊維を予備乾燥させる工程である。
エージング工程は、予備乾燥工程により乾燥された撥水部を加熱エージングする工程である。これにより、最終的な撥水性繊維を得ることができる。エージング工程を施すことにより、撥水性繊維の撥水性と密着性とが更に向上する。
次に、撥水性繊維シートの製造方法について説明する。本実施形態に係る撥水性繊維シートの製造方法としては、上記の製造方法により得られた撥水性繊維を用いて繊維シートを製造する工程を備える方法が挙げられる。具体的には、撥水性繊維シートは、例えば、撥水性繊維を作製した後、当該撥水性繊維を、抄紙機、織機、編機等でシート状に加工する方法によっても製造できる。すなわち、本実施形態の繊維シート(撥水性繊維シート)は、本実施形態の繊維(撥水性繊維)を含んでいてもよい。このような製造方法によれば、撥水性と断熱性とに優れる繊維シートを製造できる。
[処理剤1]
ポリシロキサン化合物としてカルビノール変性シロキサン「XF42-C5277」(モメンティブ社製、製品名)を40.0質量部、カチオン系界面活性剤として臭化セチルトリメチルアンモニウム(和光純薬工業株式会社製:以下『CTAB』と略記)を6.4質量部及び100mM 酢酸水溶液を51.6質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム2.0質量部を加え、60℃で2時間攪拌し、処理剤1を得た。
上記処理剤1に、繊維径3.5μmのガラス繊維FS19W-N(日本無機株式会社製、製品名)をディップし、60℃で2時間かけて処理した。その後、処理したガラス繊維をメタノールにディップし、25℃で5分洗浄を行った。次にメチルエチルケトンにディップし、25℃で5分洗浄を行った。洗浄されたガラス繊維を、常圧下にて、120℃で1時間乾燥し、その後、150℃で6時間エージングすることで、撥水性繊維1を得た。
ミキサーTM837(株式会社TESCOM、製品名)に、上記撥水性繊維1を3g、精製水を750g及び界面活性剤ラッコールAL(明成化学株式会社、製品名)0.01gを1L加え、30秒間攪拌した。その後、5Lビーカーに移し、精製水3250g及び上記界面活性剤0.04gを更に加え、撥水性繊維1の凝集が目視で確認できなくなるまで回転速度1000rpmで攪拌し、撥水性繊維1の分散液を得た。得られた撥水性繊維1の分散液を150meshのメッシュを設置したスタンダードシートマシン抄紙装置(熊谷理機工業株式会社、製品名)に投入し、全量10Lになるように精製水で希釈した後、濾水及び乾燥して、目付量120g/m2である、撥水性繊維1からなる厚さ0.50mmの撥水性繊維シート1を作製した。
[処理剤2]
ポリシロキサン化合物としてポリシロキサン化合物Aを20.0質量部、カチオン系界面活性剤としてCTABを3.2質量部及び100mM 酢酸水溶液を75.8質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム1.0質量部を加え、60℃で2時間攪拌し、処理剤2を得た。
処理剤1を処理剤2に変更したこと、及び、ガラス繊維を、繊維径1.0μmのガラス繊維FM600(日本無機株式会社、製品名)に変更したこと以外は、実施例1と同様にして、撥水性繊維2を得た。
撥水性繊維1を撥水性繊維2に変更したこと以外は、実施例1と同様にして、目付量120g/m2である、撥水性繊維2からなる厚さ0.50mmの撥水性繊維シート2を作製した。
[処理剤3]
ポリシロキサン化合物としてXF42-C5277を20.0質量部、カチオン系界面活性剤としてCTABを3.2質量部及びシリカ粒子含有原料として酢酸濃度100mMに調整したPL-2L溶液(PL-2Lの詳細については表1に記載。シリカ粒子含有原料について以下同様。)を75.0質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム2.0質量部を加え、60℃で2時間攪拌し、処理剤3を得た。
処理剤2を処理剤3に変更したこと以外は、実施例2と同様にして、撥水性繊維3を得た。
撥水性繊維2を撥水性繊維3に変更したこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維3からなる厚さ0.50mmの撥水性繊維シート3を作製した。
[処理剤4]
ポリシロキサン化合物としてポリシロキサン化合物Bを20.0質量部、カチオン系界面活性剤としてCTABを3.2質量部及び100mM 酢酸水溶液を49.8質量部、並びにシリカ粒子含有原料として酢酸濃度100mMに調整したPL-2L溶液を25.0質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム2.0質量部を加え、60℃で2時間攪拌し、処理剤4を得た。
処理剤2を処理剤4に変更したこと以外は、実施例2と同様にして、撥水性繊維4を得た。
撥水性繊維2を撥水性繊維4に変更したこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維4からなる厚さ0.50mmの撥水性繊維シート4を作製した。
[処理剤5]
ポリシロキサン化合物としてポリシロキサン化合物Aを10.0質量部、シランモノマーとしてメチルトリメトキシシランKBM-13(信越化学工業株式会社製、製品名:以下『MTMS』と略記)を15.0質量部、カチオン系界面活性剤としてCTABを4.0質量部及び100mM 酢酸水溶液を69.8質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム1.2質量部を加え、60℃で2時間攪拌し、処理剤5を得た。
処理剤1を処理剤5に変更したこと以外は、実施例1と同様にして、撥水性繊維5を得た。
撥水性繊維1を撥水性繊維5に変更したこと以外は、実施例1と同様にして、目付量120g/m2である、撥水性繊維5からなる厚さ0.50mmの撥水性繊維シート5を作製した。
[処理剤6]
ポリシロキサン化合物としてポリシロキサン化合物Aを10.0質量部、シランモノマーとしてMTMSを15.0質量部、カチオン系界面活性剤としてCTABを4.0質量部及び100mM 酢酸水溶液を43.5質量部、並びにシリカ粒子含有原料として酢酸濃度100mMに調整したPL-5L溶液を25.0質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム2.5質量部を加え、60℃で2時間攪拌し、処理剤6を得た。
処理剤2を処理剤6に変更したこと以外は、実施例2と同様にして、撥水性繊維6を得た。
撥水性繊維2を撥水性繊維6に変更したこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維6からなる厚さ0.50mmの撥水性繊維シート6を作製した。
[処理剤7]
ポリシロキサン化合物としてポリシロキサン化合物Aを1.0質量部、シランモノマーとしてMTMSを3.0質量部、ジメチルジメトキシシランKBM-22(信越化学工業株式会社製、製品名:以下『DMDMS』と略記)を1.0質量部、カチオン系界面活性剤としてCTABを0.8質量部及び100mM 酢酸水溶液を88.7質量部、並びにシリカ粒子含有原料として酢酸濃度100mMに調整したPL-2L溶液を5.0質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム0.5質量部を加え、60℃で2時間攪拌し、処理剤7を得た。
処理剤2を処理剤7に変更したこと以外は、実施例2と同様にして、撥水性繊維7を得た。
撥水性繊維2を撥水性繊維7に変更したこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維7からなる厚さ0.50mmの撥水性繊維シート7を作製した。
[撥水性繊維8]
上記処理剤7に、繊維径1.0μmのガラス繊維FM600(日本無機株式会社、製品名)を25℃で5分ディップし、その後、ガラス繊維を150℃で2時間乾燥して、溶媒を揮発させた。乾燥したガラス繊維をメタノールにディップし、25℃で5分洗浄を行った。次にメチルエチルケトンにディップし、25℃で5分洗浄を行った。洗浄されたガラス繊維を、常圧下にて、120℃で1時間乾燥し、その後、150℃で6時間エージングすることで、撥水性繊維8を得た。
撥水性繊維2を撥水性繊維8に変更しこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維8からなる厚さ0.50mmの撥水性繊維シート8を作製した。
[繊維シート]
繊維径1.0μmのガラス繊維FM600(日本無機株式会社、製品名)3g、精製水750g及び界面活性剤ラッコールAL(明成化学株式会社、製品名)0.01gを、1LミキサーTM837(株式会社TESCOM、製品名)に加え、30秒間攪拌した後、5Lビーカーに移し、精製水3250g及び上記界面活性剤0.04gを更に加え、繊維の凝集が目視で確認できなくなるまで回転速度1000rpmで攪拌し、繊維の分散液を得た。得られた繊維の分散液を150meshのメッシュを設置したスタンダードシートマシン抄紙装置(熊谷理機工業株式会社、製品名)に投入し、全量10Lになるように精製水で希釈した後、濾水・乾燥して、目付量120g/m2である、繊維からなる厚さ0.50mmの繊維シートを作製した。
上記処理剤7に、上記繊維シートをディップし、60℃で2時間かけて処理した。その後、処理した繊維シートをメタノールにディップし、25℃で5分洗浄を行った。次にメチルエチルケトンにディップし、25℃で5分洗浄を行った。洗浄された繊維シートを、常圧下にて、120℃で1時間乾燥し、その後、150℃で6時間エージングすることで、撥水性繊維シート9を得た。
[処理剤8]
ポリシロキサン化合物としてポリシロキサン化合物Aを10.0質量部、シランモノマーとしてMTMSを15.0質量部、カチオン系界面活性剤としてCTABを4.0質量部、100mM 酢酸水溶液を69.8質量部、及び塩基触媒として炭酸ナトリウム1.2質量部を混合し、25℃で6時間攪拌し、処理剤8を得た。
処理剤1を処理剤8に変更したこと以外は、実施例1と同様にして、撥水性繊維9を得た。
撥水性繊維1を撥水性繊維9に変更したこと以外は、実施例1と同様にして、目付量120g/m2である、撥水性繊維9からなる厚さ0.50mmの撥水性繊維シート10を作製した。
[処理剤9]
ポリシロキサン化合物としてポリシロキサン化合物Aを1.0質量部、シランモノマーとしてMTMSを3.0質量部及びDMDMSを1.0質量部、カチオン系界面活性剤としてCTABを0.8質量部、100mM 酢酸水溶液を88.7質量部、シリカ粒子含有原料として酢酸濃度100mMに調整したPL-2L溶液を5.0質量部、並びに塩基触媒として炭酸ナトリウム0.5質量部を混合し、25℃で6時間攪拌し、処理剤9を得た。
処理剤2を処理剤9に変更したこと以外は、実施例2と同様にして、撥水性繊維10を得た。
撥水性繊維2を撥水性繊維10に変更したこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維10からなる厚さ0.50mmの撥水性繊維シート11を作製した。
[処理剤10]
ポリシロキサン化合物としてポリシロキサン化合物Aを10.0質量部、シランモノマーとしてMTMSを15.0質量部、カチオン系界面活性剤としてCTABを4.0質量部、100mM 酢酸水溶液を69.8質量部及びエアロゲル粒子としてIC3100(キャボット社製、製品名)を1.0質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム2.0質量部を加え、60℃で2時間攪拌し、処理剤10を得た。
処理剤1を処理剤10に変更したこと以外は、実施例1と同様にして、撥水性繊維11を得た。
撥水性繊維1を撥水性繊維11に変更したこと以外は、実施例1と同様にして、目付量120g/m2である、撥水性繊維11からなる厚さ0.50mmの撥水性繊維シート12を作製した。
[処理剤11]
ポリシロキサン化合物としてポリシロキサン化合物Aを1.0質量部、シランモノマーとしてMTMSを3.0質量部及びDMDMSを1.0質量部、カチオン系界面活性剤としてCTABを0.8質量部、100mM 酢酸水溶液を88.7質量部、シリカ粒子含有原料として酢酸濃度100mMに調整したPL-2L溶液を5.0質量部、エアロゲル粒子としてIC3100を1.0質量部、並びに塩基触媒として炭酸ナトリウム0.5質量部を混合し、25℃で6時間攪拌し、処理剤11を得た。
処理剤2を処理剤11に変更したこと以外は、実施例2と同様にして、撥水性繊維12を得た。
撥水性繊維2を撥水性繊維12に変更したこと以外は、実施例2と同様にして、目付量120g/m2である、撥水性繊維12からなる厚さ0.50mmの撥水性繊維シート13を作製した。
[比較処理剤1]
シランモノマーとしてMTMSを30.0質量部、カチオン系界面活性剤としてCTABを2.4質量部及び100mM 酢酸水溶液を66.1質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム1.5質量部を加え、60℃で2時間攪拌し、比較処理剤1を得た。
処理剤1を比較処理剤1に変更したこと以外は、実施例1と同様にして、比較撥水性繊維1を得た。
撥水性繊維1を比較撥水性繊維1に変更したこと以外は、実施例1と同様にして、比較撥水性繊維シート1を得た。
[比較処理剤2]
シランモノマーとしてMTMSを20.0質量部、DMDMSを15.0質量部、カチオン系界面活性剤としてCTABを2.8質量部及び100mM 酢酸水溶液を60.5質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム1.7質量部を加え、60℃で2時間攪拌し、比較処理剤2を得た。
処理剤2を比較処理剤2に変更したこと以外は、実施例2と同様にして、比較撥水性繊維2を得た。
撥水性繊維2を比較撥水性繊維2に変更したこと以外は、実施例2と同様にして、比較撥水性繊維シート2を得た。
[比較処理剤3]
シランモノマーとしてフルオロアルキルシランXC98-B2472(モメンティブ社製、製品名)を30.0質量部、カチオン系界面活性剤としてCTABを2.4質量部及び100mM 酢酸水溶液を66.1質量部混合し、25℃で2時間攪拌した。これに塩基触媒として炭酸ナトリウム1.5質量部を加え、60℃で2時間攪拌し、比較処理剤3を得た。
処理剤2を比較処理剤3に変更したこと以外は、実施例2と同様にして、比較撥水性繊維3を得た。
撥水性繊維2を比較撥水性繊維3に変更したこと以外は、実施例2と同様にして、比較撥水性繊維シート3を得た。
[比較撥水性繊維シート4]
処理剤7を比較処理剤2に変更したこと以外は、実施例9と同様にして、比較撥水性繊維シート4を得た。
各実施例で得られた撥水性繊維シート及び未処理の繊維シートについて、以下の条件に従って測定又は評価をした。水接触角測定、熱伝導率測定、含ケイ素結合単位Q、T及びDに係るシグナル面積比の測定の評価結果をまとめて表3に示す。
各実施例及び比較例で得られた撥水性繊維シート及び未処理の繊維シートを、105℃で1時間乾燥し、測定サンプルとした。次に、協和界面科学株式会社製の接触角計DMs-401を使用して、超純水の液滴2μLを滴下し、5秒後の接触角を、室温で測定した。測定は5回行い、平均値を水接触角とした。
各実施例及び比較例で得られた撥水性繊維シート及び未処理の繊維シートを、250mm角に切断し、105℃で1時間乾燥し、測定サンプルとした。熱伝導率の測定は、定常法熱伝導率測定装置「HFM436Lambda」(NETZSCH社製、製品名)を用いて行った。測定条件は、大気圧下、平均温度25℃とした。上記の通り得られた測定サンプルを6枚重ね、0.3MPaの荷重にて上部及び下部ヒーター間に挟み、温度差ΔTを20℃とし、ガードヒーターによって一次元の熱流になるように調整しながら、測定サンプルの上面温度、下面温度等を測定した。そして、測定サンプルの熱抵抗RSを次式より求めた。
RS=N((TU-TL)/Q)-RO
式中、TUは測定サンプル上面温度を示し、TLは測定サンプル下面温度を示し、ROは上下界面の接触熱抵抗を示し、Qは熱流束計出力を示す。なお、Nは比例係数であり、較正試料を用いて予め求めておいた。
λ=d/RS
式中、dは測定サンプルの厚さを示す。
固体29Si-NMR装置として「FT-NMR AV400WB」(ブルカー・バイオスピン株式会社製、製品名)を用いて測定を行った。測定条件は、測定モード:DD/MAS法、プローブ:4mmφのCPMASプローブ、磁場:9.4T、共鳴周波数:79Hz、MAS回転数:4kHz、遅延時間:150秒とした。標準試料としては、3-トリメチルシリルプロピオン酸ナトリウムを用いた。
Claims (23)
- 加水分解性の官能基又は縮合性の官能基を有するポリシロキサン化合物、及び、該加水分解性の官能基を有するポリシロキサン化合物の加水分解生成物からなる群より選択される少なくとも一種を含有する液状組成物の縮合物を含む、繊維処理用の処理剤。
- 加水分解性の官能基又は縮合性の官能基を有するポリシロキサン化合物、及び、該加水分解性の官能基を有するポリシロキサン化合物の加水分解生成物からなる群より選択される少なくとも一種を含有する液状組成物を含む、繊維処理用の処理剤。
- 前記液状組成物がシリカ粒子を更に含有する、請求項1又は2に記載の処理剤。
- 前記シリカ粒子の1g当りのシラノール基数が、10×1018~1000×1018個/gである、請求項3に記載の処理剤。
- 前記液状組成物が、加水分解性の官能基又は縮合性の官能基を有するシランモノマー、及び、該加水分解性の官能基を有するシランモノマーの加水分解生成物からなる群より選択される少なくとも一種を更に含有する、請求項1~6のいずれか一項に記載の処理剤。
- 前記液状組成物がエアロゲル粒子を更に含有する、請求項1~7のいずれか一項に記載の処理剤。
- 繊維の被処理面に撥水部を形成するために用いられる、請求項1~8のいずれか一項に記載の処理剤。
- 前記撥水部がエアロゲルを含む、請求項9に記載の処理剤。
- 前記撥水成分がエアロゲルである、請求項11~13のいずれか一項に記載の処理剤。
- 請求項1~14のいずれか一項に記載の処理剤を用いて繊維を処理する工程を備える、表面処理繊維の製造方法。
- 請求項15に記載の製造方法により得られる表面処理繊維を用いて繊維シートを製造する工程を備える、又は請求項1~14のいずれか一項に記載の処理剤を用いて繊維シートを処理する工程を備える、表面処理繊維シートの製造方法。
- 繊維と、該繊維の被処理面上に請求項1~14のいずれか一項に記載の処理剤の乾燥物を含む処理部と、を備える表面処理繊維。
- 請求項17に記載の表面処理繊維を含む表面処理繊維シート。
- 前記撥水部がエアロゲルを含む、請求項19~21のいずれか一項に記載の撥水性繊維。
- 請求項19~22のいずれか一項に記載の撥水性繊維を含む、撥水性繊維シート。
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KR20190105605A (ko) * | 2017-02-02 | 2019-09-17 | 히타치가세이가부시끼가이샤 | 섬유 처리용의 처리제, 섬유 및 그 제조 방법, 그리고 섬유 시트 및 그 제조 방법 |
KR102549062B1 (ko) | 2017-02-02 | 2023-06-29 | 가부시끼가이샤 레조낙 | 섬유 처리용의 처리제, 섬유 및 그 제조 방법, 그리고 섬유 시트 및 그 제조 방법 |
WO2020084668A1 (ja) * | 2018-10-22 | 2020-04-30 | 日立化成株式会社 | エアロゲル複合材料 |
JPWO2020084668A1 (ja) * | 2018-10-22 | 2021-09-30 | 昭和電工マテリアルズ株式会社 | エアロゲル複合材料 |
JP7163967B2 (ja) | 2018-10-22 | 2022-11-01 | 昭和電工マテリアルズ株式会社 | エアロゲル複合材料 |
Also Published As
Publication number | Publication date |
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WO2018142552A1 (ja) | 2018-08-09 |
JPWO2018143364A1 (ja) | 2019-11-21 |
KR102549062B1 (ko) | 2023-06-29 |
US20190359869A1 (en) | 2019-11-28 |
CN110249091A (zh) | 2019-09-17 |
EP3578712A4 (en) | 2020-12-02 |
KR20190105605A (ko) | 2019-09-17 |
TWI778015B (zh) | 2022-09-21 |
JP7107230B2 (ja) | 2022-07-27 |
EP3578712A1 (en) | 2019-12-11 |
TW201840807A (zh) | 2018-11-16 |
US11905452B2 (en) | 2024-02-20 |
EP3578712B1 (en) | 2022-06-08 |
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