CN107513894A - A kind of super-amphiphobic air filter paper and preparation method thereof - Google Patents
A kind of super-amphiphobic air filter paper and preparation method thereof Download PDFInfo
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- CN107513894A CN107513894A CN201710817355.3A CN201710817355A CN107513894A CN 107513894 A CN107513894 A CN 107513894A CN 201710817355 A CN201710817355 A CN 201710817355A CN 107513894 A CN107513894 A CN 107513894A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
- Filtering Materials (AREA)
Abstract
The present invention relates to functional paper technical field, more particularly to a kind of ultra-hydrophobic paper and preparation method thereof, by the way that filter paper in 10 ~ 30min of ethanol or acetone soak, is then taken out, to dry to water content be 60 ~ 75%；Sulfur fluoride is passed through in organic solvent, is then added epoxy resin, silane coupler, fluorographite, bacteriostatic agent and is well mixed, obtains super-amphiphobic coating；Using spin coating method, by super-amphiphobic coating coated on filter paper, it is then 50 ~ 80 DEG C in temperature, under conditions of pressure is 20 ~ 0 KPa, solidifies 1 ~ 5h, obtain super-amphiphobic air filter paper.The filter paper has excellent hydrophobic and oleophobic performance, sulfur fluoride and fluorographite is fixed on its surface, by adding bacteriostatic agent, improves the permanent biocidal property and filter effect of sharp filter paper.
Description
Technical field
The present invention relates to functional paper technical field, more particularly to a kind of super-amphiphobic air filter paper and preparation method thereof.
Background technology
With industrial expansion, the pollution pollutant of air is increasingly severe, and the composition polluted also becomes increasingly complex.
Particularly in the place higher to api request such as air-conditioning, interior, clean workroom, reative cell, medical operating room, purification of air
It is most important.Feature air paper provides good help to solve the problem.
When air paper is used to filter, because inertial collision, interception, diffusion and electrostatic etc. act on, make to be suspended in gas
In dust granules heavy move in porous materialses.Typically its structure is fibrous, cavernous, or the group of these structures
It is fit.Filter paper both effectively intercepts dust particle, and excessive resistance is not formed to air-flow.What air filter paper interweaved in a jumble
Fiber is formed to several barrier of the nothing of particle, and broad space allows air-flow to pass through between fiber.
But in practice, because filtering is only sensitive to water and oil, after long-time use, the filtration of filter paper is easily broken
It is bad.And, it has been found that while air filtering is crossed, air paper self-cleaning is poor, easy non-self bacterial.Therefore it is hydrophobic and thin
The filter paper of oily dual property turns into first choice.
Super hydrophobic surface can typically be prepared by two class technology paths：One kind is the hydrophobic material table in low-surface-energy
Super hydrophobic surface of the structure with micro-/micro-nano structure on face, another kind of formed in the long-term evolution of nature biotechnology, such as
The blade of many plants has self_cleaning effect.Because the contact angle on the globule and super hydrophobic material surface is very small and easily surface
Tumble, therefore super hydrophobic surface is widely used prospect in fields such as automatically cleaning, waterproof, protection against the tide, anti-freezes.
CN102808357B discloses a kind of ultra-hydrophobic paper and preparation method thereof, and the ultra-hydrophobic paper is general with word or picture
The modified manometer silicon dioxide coating that particle diameter is 50-100nm is built with logical paper surface, wherein the water contact angle on the paper surface
More than 150 °, water droplet is less than 10 ° in the roll angle of paper surface.(the ACS such as Wang Suhao
Appl.Mater.Interfaces, 2010,2,677-683) Nano particles of silicon dioxide is adhered to commonly using polystyrene
Its surface, prepare super-hydrophobic/super-oleophilic filter paper.Chinese patent CN102225273A discloses a kind of super-hydrophobic super-oleophylic paper substrate
Separation material, Nano particles of silicon dioxide colloidal sol is modified using silylating reagent, filter paper is soaked into wherein naturally dry,
Produce super-hydrophobic ultra-lipophilic paper-based separating material.In actual applications, often not requiring nothing more than material surface has super-hydrophobicity, also
Ask and be provided simultaneously with super-oleophilic, i.e., suppress the immersional wetting of oil and water simultaneously.If the Static Contact of the water and oil on a certain surface
Angle is both greater than 150 ° and its roll angle is both less than 5 °, then the interface can be referred to as super-amphiphobic interface.Super hydrophobic surface and super-amphiphobic
Surface possesses certain self-cleaning function, i.e., the water droplet that surface contaminant such as dust etc. can be tumbled is taken away appoints without leaving
What vestige.
But the performance also existing defects of existing double thin filter papers, particularly by immersion or spraying addition liquid medicine or particle
Composition, its is uneven, easy to fall off, service life is short, and manufacturing process complicated band pollutes；It is miscellaneous by the dust in air or liquid
Matter particle filtering, but also have the fungi being much invisible to the naked eye and fine harmful substance, it is impossible to remove；Without antibacterial, sterilization,
Deodorization, mould proof effect.
The content of the invention
It is high for preparation technology complexity, the cost of the super-amphiphobic filter paper of currently available technology, and do not have antibacterial and mouldproof
Effect, it is an object of the invention to provide simple super-amphiphobic air filter paper of a kind of preparation technology and preparation method thereof, it has
Preparation technology is simple, cost is low, and also has the function that antibacterial and mouldproof, has longer storage life.
To solve the above problems, the present invention uses following technical scheme：
A kind of super-amphiphobic air filter paper, it is made up of filter paper matrix and the double open coats for being covered in the filter paper matrix surface, wherein,
Double open coats are the coating containing sulfur fluoride, and the thickness of the super-amphiphobic coating is 50 ~ 200nm.
Mainly super hydrophobic material and superoleophobic material are combined due to preparing super-amphiphobic material in the prior art,
Separately carried out in preparation process and by super-hydrophobic processing and superoleophobic processing, therefore also become the preparation technology of super-amphiphobic material
Must be especially cumbersome, while production cost is also improved, so as to limit its industrialization production, in addition, current super-amphiphobic air
The anti-microbial property of filter paper is also very weak, causes in transportation, mouldy, to addle phenomenon often occurs, has a strong impact on it
Transport and use.
The invention of the present invention is found during the super-amphiphobic material that studies for a long period of time, is consolidated sulfur fluoride by the method for chemistry
Its surface is scheduled on, the contact angle of filter paper and water and oil significantly increases, and its wetting capacity substantially reduces, therefore can improve filter paper
Ultra-amphosphobic energy.
The contact angle of super-amphiphobic air filter paper and water prepared by the present invention is more than 155 °, and the roll angle in water is less than
8°。
The contact angle of the super-amphiphobic air filter paper and non-aqueous solvent is more than 150 °, the rolling in non-aqueous solvent
Angle is less than 10 °.
In the present invention, super-amphiphobic coating is an important factor for determining air paper ultra-amphosphobic energy, it is preferred that described to contain
The coating for having sulfur fluoride includes the material of following parts by weight：10 ~ 25 parts of sulfur fluoride, 5 ~ 20 parts of epoxy resin, silane coupler 1 ~ 5
Part, 2 ~ 12 parts of fluorographite, 3 ~ 15 parts of bacteriostatic agent, 40 ~ 80 parts of organic solvent.
It is further preferred that the coating containing sulfur fluoride includes the material of following parts by weight：12 ~ 18 parts of sulfur fluoride,
10 ~ 12 parts of epoxy resin, 2 ~ 3 parts of silane coupler, 5 ~ 10 parts of fluorographite, 6 ~ 12 parts of bacteriostatic agent, 60 ~ 75 parts of organic solvent.
Fluorographite is the graphite that a large amount of fluorine-containing functional groups are contained on surface, and it has the hydrophobic property of oleophobic, by increasing capacitance it is possible to increase
The ultra-amphosphobic energy of air paper.
Silane coupler can promote the functional group of sulfur fluoride and fluorographite and its surface to react, and make sulfur fluoride
Its surface is fixed on fluorographite, it is preferred that the silane coupler is positive decyl trimethoxy silane, the second of positive decyl three
TMOS, positive decyl trichlorosilane, n-octyl trimethoxy silane, n-octytriethoxysilane, n-octyl trichlorosilane,
Dodecyltrimethoxysilane, dodecyl triethoxysilane, dodecyltrichlorosilane, 17 fluorine decyl trimethoxies
Silane, 17 fluorine decyl triethoxysilanes, 17 fluorine decyltrichlorosilanes, ten trifluoro octyl group trimethoxy silanes, ten trifluoros
Octyltri-ethoxysilane, ten trifluoro decyltrichlorosilanes, perfluorododecyl trimethoxy silane, the second of perfluorododecyl three
At least one of TMOS, perfluorododecyl trichlorosilane or trifluoro propyl trimethoxy silane.
In the present invention, organic solvent is the solvent that can dissolve sulfur fluoride, it is preferred that the organic solvent is acetic acid second
In ester, butyl acetate, isoamyl acetate, ethyl butyrate, acetone, butanone, cyclohexanone, toluene, benzene dimethylbenzene and nine fluorine butyl ethers
At least one, it is further preferred that containing benzene or toluene in the organic solvent.
In order to further improve the bacteriostasis property of double super thin air papers, the present invention also adds suppression in super-amphiphobic coating
Microbial inoculum, the bacteriostatic agent should have good compatibility with double super open coats, it is further preferred that the bacteriostatic agent for silver-
At least one of phosphate, chitosan.
Present invention also offers a kind of preparation method of super-amphiphobic air filter paper, comprise the following steps：
（1）By filter paper in 10 ~ 30min of ethanol or acetone soak, then take out that to dry to water content be 60 ~ 75%；
（2）Sulfur fluoride is passed through in organic solvent, then adds epoxy resin, silane coupler, fluorographite, bacteriostatic agent mixing
Uniformly, super-amphiphobic coating is obtained；
（3）Using spin coating method, by step（2）In super-amphiphobic coating coated on filter paper, be then 50 ~ 80 in temperature
DEG C, under conditions of pressure is -20 ~ 0 KPa, solidifies 1 ~ 5h, obtain super-amphiphobic air filter paper.
In the present invention, filter paper is soaked in ethanol or acetone first, can effectively remove its surface spot and
Bacterium, additionally it is possible to make filter paper and super-amphiphobic coating that there is good adhesion, extend the service life of super-amphiphobic coating,
And bacteria mildew-proof performance of the filter paper during subsequent transportation and use.
Due to the low intensity of filter paper, occur that the probability of breakage is very big, and therefore, the present invention will filter during coat coating
Paper is attached in substrate, can avoid filter paper that breakage occurs in use, it is preferred that the concrete technology of the spin coating method
For：Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in substrate
On, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, make super-amphiphobic coating in substrate
Super-amphiphobic coating is uniformly sprawled into, room temperature, which is placed, makes it spontaneously dry 15min, obtains super-amphiphobic air filter paper.
Preferably, the thickness of the super-amphiphobic coating is 50 ~ 200nm.
A kind of super-amphiphobic air filter paper of the present invention and preparation method thereof, compared with prior art, the characteristics of it is protruded and
Excellent effect is：
（1）The present invention is by the way that sulfur fluoride is added in coating, then coated on filter paper so that filter paper have it is excellent hydrophobic and
Oleophobic performance；The ultra-hydrophobicity of filter paper is further improved by adding sulfur fluoride；Fluorographite contains a large amount of fluorine-containing for surface
The graphite of functional group, it has the hydrophobic property of oleophobic, by increasing capacitance it is possible to increase the ultra-amphosphobic energy of air paper.Silane coupler can
The functional group of sulfur fluoride and fluorographite and its surface is promoted to react, additionally it is possible to make to send out between sulfur fluoride and fluorographite
Raw cross-linking reaction, further improves the ultra-hydrophobicity of filter paper, sulfur fluoride and fluorographite can also be made to be fixed on its surface.
By adding bacteriostatic agent, the permanent biocidal property of sharp filter paper is improved.
(2) super-amphiphobic coating is prepared by one-step method in the present invention, and preparation technology is simple, the preparation without complex and expensive
Equipment, cost are low.
To sum up, super-amphiphobic air filter paper of the invention not only can be effectively by the dust in air, impurity particle mistake
Filter, and fungi and the fine harmful substance that some are invisible to the naked eye can also be filtered, super-amphiphobic air filter paper of the invention
Preparation method is simple, cost is low, is adapted to industrialized production.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper ethanol soak 20min, then take out dry to water content be 68%；
（2）15 parts of sulfur fluorides are passed through in 68 parts of ethyl acetate, then add 11 parts of epoxy resin, 2 parts of positive decyl trimethoxies
Silane, 8 parts of fluorographites, 9 parts of silver-phosphate are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 65 DEG C in temperature, pressure is -10
Under conditions of KPa, solidify 3h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 100nm.
Super-amphiphobic air filter paper prepared by the present embodiment, the contact angle with water is 160 °, and the roll angle in water is
8°；
The contact angle of super-amphiphobic air filter paper and soybean oil prepared by the present embodiment is 158 °, the rolling in non-aqueous solvent
Dynamic angle is 5 °.
Embodiment 2
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper ethanol soak 10min, then take out dry to water content be 75%；
（2）12 parts of sulfur fluorides are passed through in 60 parts of butyl acetates, then add 10 parts of epoxy resin, 2 parts of positive decyl triethoxies
Silane, 5 parts of fluorographites, 6 parts of silver-phosphate are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 50 DEG C in temperature, pressure is -20
Under conditions of KPa, solidify 1h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 50nm.
Super-amphiphobic air filter paper prepared by the present embodiment, the contact angle with water is 165 °, and the roll angle in water is
6°；
The contact angle of super-amphiphobic air filter paper and soybean oil prepared by the present embodiment is 160 °, the rolling in non-aqueous solvent
Dynamic angle is 5 °.
Embodiment 3
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper in acetone soak 30min, then take out that to dry to water content be 60%；
（2）18 parts of sulfur fluorides are passed through in 75 parts of isoamyl acetates, then add 12 parts of epoxy resin, 3 parts of positive decyl trichlorine silicon
Alkane, 10 parts of fluorographites, 12 parts of silver-phosphate are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 80 DEG C in temperature, pressure is 0 KPa
Under conditions of, solidify 5h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 200nm.
Super-amphiphobic air filter paper prepared by the present embodiment, the contact angle with water is 170 °, and the roll angle in water is
5°；
The contact angle of super-amphiphobic air filter paper and soybean oil prepared by the present embodiment is 165 °, the rolling in non-aqueous solvent
Dynamic angle is 6 °.
Embodiment 4
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper in acetone soak 15min, then take out that to dry to water content be 63%；
（2）15 parts of sulfur fluorides are passed through in 40 parts of ethyl butyrates, then add 10 parts of epoxy resin, 2 parts of n-octyl trimethoxies
Silane, 4 parts of fluorographites, 6 parts of chitosans are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 60 DEG C in temperature, pressure is -18
Under conditions of KPa, solidify 2h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 100nm.
Super-amphiphobic air filter paper prepared by the present embodiment, the contact angle with water is 172 °, and the roll angle in water is
9°；
The contact angle of super-amphiphobic air filter paper and soybean oil prepared by the present embodiment is 168 °, the rolling in non-aqueous solvent
Dynamic angle is 9 °.
Embodiment 5
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper ethanol soak 25min, then take out dry to water content be 73%；
（2）10 parts of sulfur fluorides are passed through in 40 parts of acetone, then add 5 parts of epoxy resin, 1 part of n-octytriethoxysilane, 2
Part fluorographite, 3 parts of chitosans are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 50 DEG C in temperature, pressure is -15
Under conditions of KPa, solidify 5h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 150nm.
Super-amphiphobic air filter paper prepared by the present embodiment, the contact angle with water are 175 °, 4 ° of the roll angle in water；
The contact angle of super-amphiphobic air filter paper and soybean oil prepared by the present embodiment is 172 °, the rolling in non-aqueous solvent
Dynamic angle is 6 °.
Embodiment 6
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper in acetone soak 12min, then take out that to dry to water content be 70%；
（2）25 parts of sulfur fluorides are passed through in 80 parts of butanone, then add 20 parts of epoxy resin, 5 parts of positive decyl trimethoxy silanes,
12 parts of fluorographites, 15 parts of chitosans are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 80 DEG C in temperature, pressure is -5
Under conditions of KPa, solidify 3h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 75nm.
Super-amphiphobic air filter paper prepared by the present embodiment, the contact angle with water is 162 °, and the roll angle in water is
5°；
The contact angle of super-amphiphobic air filter paper and soybean oil prepared by the present embodiment is 168 °, the rolling in non-aqueous solvent
Dynamic angle is 4 °.
Comparative example 1
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper in acetone soak 12min, then take out that to dry to water content be 70%；
（2）In 80 parts of butanone, then add 20 parts of epoxy resin, 5 parts of positive decyl trimethoxy silanes, 12 parts of fluorographites,
15 parts of chitosans are well mixed, and obtain super-amphiphobic coating；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 80 DEG C in temperature, pressure is -5
Under conditions of KPa, solidify 3h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 75nm.
Comparative example 2
A kind of preparation method of super-amphiphobic air filter paper, comprises the following steps：
（1）By filter paper in acetone soak 12min, then take out that to dry to water content be 70%；
（2）In 80 parts of butanone, 20 parts of epoxy resin, 5 parts of positive decyl trimethoxy silanes, 15 parts of chitosan mixing are then added
Uniformly, super-amphiphobic coating is obtained；
（3）Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic coating configured is added dropwise in base
On piece, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating in substrate
On uniformly sprawl into super-amphiphobic coating, room temperature, which is placed, makes it spontaneously dry 15min, is then 80 DEG C in temperature, pressure is -5
Under conditions of KPa, solidify 3h, obtain super-amphiphobic air filter paper.
Super-amphiphobic air filter paper prepared by the present embodiment by filter paper matrix and is covered in the double of the filter paper matrix surface
Open coat forms, and the thickness of the super-amphiphobic coating is 75nm.
Embodiment 6, comparative example 1, comparative example 2 are subjected to purification of air test comparison：
Method is：
Air-flow → blower fan air-supply → pipeline → air filter paper → is blown into room → test.18 DEG C of temperature, humidity 50% or so.
Embodiment 6：Air by 100 it is grading turn to 100,000 grades, after purifying 24h, every cubic metre of bacterial population is by 80,000N/AT
It is reduced to every cubic metre of bacterial population 5,000N/AT.
Embodiment 1：Air by 100 it is grading turn to 1000 grades, after purifying 24h, every cubic metre of bacterial population is by 80,000N/AT
It is reduced to every cubic metre of bacterial population 45,000N/AT.
Embodiment 2：Air by 100 it is grading turn to 1000 grades, after purifying 24h, every cubic metre of bacterial population is by 80,000N/AT
It is reduced to every cubic metre of bacterial population 70,000N/AT.
Above-mentioned experiment：Comparative example reduces sulfur fluoride, fluorographite due to being not reaching to good double thin property, therefore, its mistake
Filter performance is drastically reduced.And easily breed bacteria.
Claims (10)
1. a kind of super-amphiphobic air filter paper, it is characterised in that by filter paper matrix and be covered in the double thin of the filter paper matrix surface
Coating forms, wherein, double open coats are the coating containing sulfur fluoride, and the thickness of the super-amphiphobic coating is 50 ~ 200nm.
2. super-amphiphobic air filter paper according to claim 1, it is characterised in that it is more than 155 ° with the contact angle of water,
Roll angle in water is less than 8 °；The contact angle of the super-amphiphobic air filter paper and non-aqueous solvent is more than 150 °, non-aqueous
Roll angle in solvent is less than 10 °.
3. super-amphiphobic air filter paper according to claim 1 or 2, it is characterised in that the coating containing sulfur fluoride
Include the material of following parts by weight：10 ~ 25 parts of sulfur fluoride, 5 ~ 20 parts of epoxy resin, 1 ~ 5 part of silane coupler, fluorographite 2 ~
12 parts, 3 ~ 15 parts of bacteriostatic agent, 40 ~ 80 parts of organic solvent.
4. super-amphiphobic air filter paper according to claim 3, it is characterised in that the coating containing sulfur fluoride includes
The material of following parts by weight：12 ~ 18 parts of sulfur fluoride, 10 ~ 12 parts of epoxy resin, 2 ~ 3 parts of silane coupler, fluorographite 5 ~ 10
Part, 6 ~ 12 parts of bacteriostatic agent, 60 ~ 75 parts of organic solvent.
5. super-amphiphobic air filter paper according to claim 3, it is characterised in that the silane coupler is positive decyl three
Methoxy silane, positive decyl triethoxysilane, positive decyl trichlorosilane, n-octyl trimethoxy silane, the ethoxy of n-octyl three
Base silane, n-octyl trichlorosilane, dodecyltrimethoxysilane, dodecyl triethoxysilane, dodecyl trichlorine
Silane, 17 fluorine decyl trimethoxy silanes, 17 fluorine decyl triethoxysilanes, 17 fluorine decyltrichlorosilanes, ten trifluoros
Octyl group trimethoxy silane, tridecafluoro-n-octyltriethoxysilane, ten trifluoro decyltrichlorosilanes, perfluorododecyl trimethoxy
In base silane, perfluorododecyl triethoxysilane, perfluorododecyl trichlorosilane or trifluoro propyl trimethoxy silane
At least one.
6. super-amphiphobic air filter paper according to claim 3, it is characterised in that the organic solvent be ethyl acetate,
In butyl acetate, isoamyl acetate, ethyl butyrate, acetone, butanone, cyclohexanone, toluene, benzene dimethylbenzene and nine fluorine butyl ethers extremely
Few one kind.
7. super-amphiphobic air filter paper according to claim 3, it is characterised in that the bacteriostatic agent is silver-phosphate, shell
At least one of glycan.
A kind of 8. preparation method of super-amphiphobic air filter paper according to claim 1 ~ 7 any one, it is characterised in that
Comprise the following steps：
（1）By filter paper in 10 ~ 30min of ethanol or acetone soak, then take out that to dry to water content be 60 ~ 75%；
（2）Sulfur fluoride is passed through in organic solvent, then adds epoxy resin, silane coupler, fluorographite, bacteriostatic agent mixing
Uniformly, super-amphiphobic coating is obtained；
（3）Using spin coating method, by step（2）In super-amphiphobic coating coated on filter paper, be then 50 ~ 80 in temperature
DEG C, under conditions of pressure is -20 ~ 0 KPa, solidifies 1 ~ 5h, obtain super-amphiphobic air filter paper.
9. the preparation method of super-amphiphobic air filter paper according to claim 8, it is characterised in that the spin coating method
Concrete technology be：Filter paper is attached in substrate, then substrate is fixed on spin coating instrument, the super-amphiphobic configured is applied into gob
It is added on substrate, 2s is rotated with 500r/min speed first, then 10s is rotated with 1000r/min speed, makes super-amphiphobic coating
Super-amphiphobic coating is uniformly sprawled into substrate, room temperature, which is placed, makes it spontaneously dry 15min, obtains super-amphiphobic air filter paper.
10. the preparation method of super-amphiphobic air filter paper according to claim 9, it is characterised in that the super-amphiphobic applies
The thickness of layer is 50 ~ 200nm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166305A (en) * | 2017-12-30 | 2018-06-15 | 应城市嘉鸿技术服务科技有限公司 | A kind of high intensity air filter paper and preparation method thereof |
| US20210316171A1 (en) * | 2020-04-09 | 2021-10-14 | Nanotek Instruments Group, Llc | Graphitic antiviral filtration element and filtration devices containing same |
-
2017
- 2017-09-12 CN CN201710817355.3A patent/CN107513894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166305A (en) * | 2017-12-30 | 2018-06-15 | 应城市嘉鸿技术服务科技有限公司 | A kind of high intensity air filter paper and preparation method thereof |
| US20210316171A1 (en) * | 2020-04-09 | 2021-10-14 | Nanotek Instruments Group, Llc | Graphitic antiviral filtration element and filtration devices containing same |
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