CN108219656A - Waterborne suede removes from office the methods and applications of slurry and wet processing processing suede - Google Patents
Waterborne suede removes from office the methods and applications of slurry and wet processing processing suede Download PDFInfo
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- CN108219656A CN108219656A CN201711397671.6A CN201711397671A CN108219656A CN 108219656 A CN108219656 A CN 108219656A CN 201711397671 A CN201711397671 A CN 201711397671A CN 108219656 A CN108219656 A CN 108219656A
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- mass parts
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- suede
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/146—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the macromolecular diols used
-
- 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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention provides the methods and applications of a kind of waterborne suede leather slurry and wet processing processing suede, and waterborne suede provided by the invention removes from office slurry, includes each component of following mass parts：70 95 mass parts of aqueous polyurethane dispersion, preferably 80 90 mass parts；5 30 mass parts of aqueous acrylic emulsion, preferably 10 25 mass parts；15 mass parts of foam stabilizer, preferably 23 mass parts；15 mass parts of foaming agent, preferably 23 mass parts.The waterborne suede leather slurry of the present invention processes suede by foaming processing slurry obtained especially suitable for wet processing, the suede obtained is especially suitable for electronic packaging field, and the waterborne suede leather slurry of the present invention is environmentally friendly, pollution-free, has preferable feel through suede made from wet processing.
Description
Technical field
The present invention relates to waterborne suede leather slurry field, further to the slurry for being applicable to the processing of electronic packaging suede
Material, it is more particularly to a kind of suitable for waterborne suede leather slurry of wet processing processing suede and its preparation method and application.
Background technology
With the fast development of China's electronic industry, the wherein electricity such as electronic packaging cell-phone cover, tablet computer protective sleeve
Sub- product demand is also increasingly vigorous.Traditional electronic packaging leather majority is made with PVC material or oiliness PU materials, traditional handicraft
Electronic packaging leather is made for the oiliness PU methods for replacing DMF.The shortcomings that this traditional handicraft, is that oiliness PU materials were producing
The middle DMF (dimethylformamide) that journey uses is the substance being harmful to human body and environment, and product obtained has residual solvent, no
But not environmentally, the health care belt of production work personnel and consumer can also be threatened.Develop the making of aqueous electronic packaging innovation
Method may replace oiliness PU materials, have very big potential commercial value.
Patent Application Publication 201320013758.X elaborates a kind of aqueous polyurethane electronic packaging leather, wherein using from
Traditional Packing leather made from type paper method, is only compounded with looped fabric and aqueous polyurethane, belongs in packaging field of leather and compares
The leather of low side, the formula of size used is simple, and obtained leather hand feeling is common, no velvet.Patent Application Publication
201410523751.1 elaborate a kind of high-grade electronic packaging and certificate Synthetic Leather, by Synthetic Leather base
One layer of water white transparency sizing material is covered with paint, lacquer, colour wash, etc. in layer outer surface, and baking and curing obtains Synthetic Leather, changes method and remains unchanged using conventional solvent
Electronic packaging leather is made in the cured method of wet method, mainly plays the role of certain antifouling, is still a kind of traditional, not environmentally
Production method.Patent Application Publication 201310008066.0 elaborates a kind of production method of aqueous electronic packaging woven fabric,
It is middle to immerse woven fabric cloth in aqueous polyurethane slurry, direct drying forming；This production method is solvent-free, and overall process is non-solvent
Aqueous environments；But electronics super fiber leather feel obtained is not plentiful, and pliability is not high.Patent Application Publication 201210164124.4 is explained
Environment-friendly water-based polyurethane matte synthetic leather of a kind of high vapor-permeable type and preparation method thereof has been stated, water is coated on raising class looped fabric
Property polyurethane compositions, direct drying and shaping has very excellent permeability, but of high cost, is mostly removed from office suitable for footwear, is not suitable for
For electronic packaging field.Patent Application Publication 201110302564.7 elaborates the synthetic leather making side for electronic product
Method in entire manufacturing process, generates the solvent of the pollution environment such as a large amount of dimethylformamide, unfriendly to environment.
Therefore, there is an urgent need for exploitation one kind can meet slurry organic solvent-free, and finished product is soft, and velvet is strong, and can use
Wet processing processing electronic packaging suede slurry, and based on the slurry processing obtain suede can meet cell-phone cover,
The requirement of the electronic packagings suede such as tablet computer protective sleeve.
Invention content
The present invention provides a kind of waterborne suede leather slurry and preparation method thereof, the present invention to make up the deficiencies in the prior art
Waterborne suede leather slurry process suede, the suede obtained especially suitable for wet processing by foaming processing slurry obtained
Upper leather is especially suitable for electronic packaging field, and the waterborne suede leather slurry of the present invention is environmentally friendly, pollution-free, is made through wet processing
Suede have preferable feel.
First aspect present invention provides a kind of waterborne suede leather slurry, includes each component of following mass parts：
Aqueous polyurethane dispersion 70-95 mass parts, preferably 80-90 mass parts；
Aqueous acrylic emulsion 5-30 mass parts, preferably 10-25 mass parts；
Foam stabilizer 1-5 mass parts, preferably 2-3 mass parts；
Foaming agent 1-5 mass parts, preferably 2-3 mass parts.
The waterborne suede leather slurry of the present invention, it is preferred that the aqueous polyurethane dispersion is to include isocyanates, polynary
The raw material isocyanate-terminated prepolymer obtained by the reaction of alcohol, chain extender, it is neutralized and be dispersed in water acquisition；Preferably,
The grain size of the aqueous polyurethane dispersion is 200-350nm, is conducive to improve the stability of slurry system, while conducive to wet
It is solidified in method technique using ionizable metal salt flocculence；Preferably, it is total based on the raw material for preparing the aqueous polyurethane dispersion
Quality, the dosage of hydrophilic chain extender is 1-10%, preferably 1.5-4%, to obtain the aqueous polyurethane dispersion of preferable grain size.
The solid content of aqueous polyurethane dispersion is preferably 40%-50%, is easy to mechanical foaming, easily forms and thicken, and has and more preferably applies
Work performance.
Preferably, the isocyanates is one or more in aromatic series, aliphatic and alicyclic diisocyanate；
Further preferably isophorone diisocyanate (IPDI), 4,4'- dicyclohexyl methyl hydride diisocyanates (H12MDI), toluene
Diisocyanate (TDI), one kind or more in methyl diphenylene diisocyanate (MDI), hexamethylene diisocyanate (HDI)
Kind, more preferably toluene di-isocyanate(TDI) (TDI) are added in the formula of size system of the present invention and are prepared using the isocyanates
Aqueous polyurethane dispersion, elasticity and toughness can be obtained preferably and the product of good hand, while the high temperature of product can be improved
High humidity water resistance (resistance to jungle hydrolysis), high temperature and humidity water resistance reach 4 all standards.
Preferably, the one kind or more of the polyalcohol in polyether polyol, polyester polyol, polycarbonate polyol
Kind；Polyether polyol of the further preferred number-average molecular weight for 300-5000 dalton, more preferable number-average molecular weight 1000-4000
The polyether polyol of dalton, to improve the high temperature and humidity anti-hydrolytic performance of the product of product.The polyether polyol is preferably
Polytetrahydrofuran polyol, polyethylene glycol polyalcohol, polypropylene glycol polyalcohol, polyethylene glycol-propylene glycol polyol, polyoxy
Change one or more in the polyether polyol of propylene polyalcohol and PO/EO copolymerization.The polyether polyol of the PO/EO copolymerization
In, EO contents are preferably smaller than 30% equal to polyether polyol quality.More preferably, the polyalcohol is more for polypropylene oxide
First alcohol and/or, the polyether polyol of PO/EO copolymerization, such as can be that ten thousand magnificent chemistry Rong Wei polyurethane Co., Ltds produce
WANOL C2010, WANOL C2056 and WANOL C2140 etc..In preferred scheme, the polyalcohol is PO/EO copolymerization
Polyether polyol, in PO ring-opening polymerisations introduce EO segments, can improve polyether polyol hydrophily and its with water, polyisocyanic acid
The compatibility of ester using the preferred polyalcohol, conducive to the aqueous polyurethane dispersion of size tunable is obtained, while can be improved and be added
The fullness of the skin sense for the suede that work obtains.
Preferably, the chain extender includes hydrophilic chain extender, preferably further includes glycol chain extender；The dihydric alcohol chain extension
Agent can for example be but not limited to one or more in ethylene glycol, 1,4-butanediol, neopentyl glycol, 1,6- hexylene glycols etc., institute
It is preferably anion chain extender to state hydrophilic chain extender, can be dihydromethyl propionic acid (DMPA), dimethylolpropionic acid, dihydroxy half
It is one or more in ester, ethylenediamine base ethanesulfonic acid sodium, one kind more preferably in dihydromethyl propionic acid, dimethylolpropionic acid or
Two kinds.
The waterborne suede leather slurry of the present invention, it is preferred that the raw material for preparing the aqueous polyurethane dispersion is included such as
The each component of lower mass parts：5-20 parts of isocyanates, 75-95 parts of polyalcohol, 0-5 parts of glycol chain extender, hydrophilic chain extender
1.5-4 part.The aqueous polyurethane dispersion prepared using preferred raw material proportioning, it is mutual with the other components in formula of size system
Cooperation can obtain soft without viscous.The specific preparation process of aqueous polyurethane dispersion is state of the art, right
This is not repeated；For example, a kind of specific preferably preparation process includes：By isocyanates, polyalcohol, hydrophilic chain extender, binary
Alcohol chain extender and solvent (such as acetone etc.) are added in reactor in 60-90 DEG C of reaction, are reached NCO theoretical values and (are substantially reacted 3-6
Hour), (such as adding in triethylamine etc.) after reaction, is neutralized, water is added with stirring and is disperseed；It optionally, can be with
It adds in small molecule amine chain extender (such as can be 0-4 mass parts) and continues chain extension (such as chain extension 10min)；Finally remove solvent.
The wherein described small molecule amine chain extender is such as can be ethylenediamine, isophorone diamine.
The waterborne suede leather slurry of the present invention, it is preferred that the aqueous acrylic emulsion is the propylene of metal ion crosslinked
Acid esters lotion in the formula of size system of the present invention, adds in aqueous poly- in the preferred aqueous acrylic emulsion and formula
Urethane has preferable compounding stability, it is ensured that the open hour of slurry；On the other hand, the two synergy has excellent
Grinability, be dispersed in base fabric matte, there is easily polishing during sanding, not scab paper can obtain the hand of matte exquisiteness
Sense.
The waterborne suede leather slurry of the present invention, the acrylic acid ester emulsion of the further preferred metal ion crosslinked is ten thousand China
Chemical company4316 styrene-acrylic emulsions or the acrylic acid ester emulsion of the metal ion crosslinked are used including as follows
The raw material of mass parts is made, to obtain superior grinability：10-30 parts of methyl methacrylate, 5-15 parts of styrene, propylene
5-15 parts of acid butyl ester, 1-5 parts of methacrylic acid, 5-15 parts of zinc ammonia solution, 0.5-2 parts of emulsifier, 0.1-0.5 parts of initiator, water
50-70 parts.Emulsifier used in it and initiator do not limit this especially using corresponding reagent commonly used in the art
It is fixed, such as emulsifier can be one or more in disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, lauryl sodium sulfate etc., cause
Agent can be at least one of ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate etc. etc..
Preferably, the mass percent of zinc oxide is 5-25% in the zinc ammonia solution, and the mass percent of ammonium hydroxide is 5-
10%, surplus is water.
The preparation process of the acrylic acid ester emulsion of the metal ion crosslinked uses the existing preparation process in this field,
This is not repeated.And in a kind of preferred embodiment of the present invention, the preparation process of the lotion includes：By emulsifier,
Water and methyl methacrylate, styrene, butyl acrylate and methacrylic acid carry out pre-emulsification, obtain pre-emulsion；It will be pre-
The 1-10wt% of emulsion treats that temperature reaches 50-90 DEG C, the 10-60wt% for adding in initiator total amount causes polymerization as seed
(reaction time can be specifically 15-60min) obtains seed emulsion；Remaining pre-emulsion and remaining is added dropwise into seed emulsion
Initiator (time for adding is specifically as follows 1-3h) keeps the temperature 0.5-3h, is cooled to 45 DEG C hereinafter, adding in zinc ammonia solution.Further
Preferably, when carrying out the pre-emulsification, the emulsifier of 10-70wt% of emulsifier total amount and the 70- of water inventory are first added in
The water of 90wt% is stirred, and adds remaining emulsifier and water and methyl methacrylate, styrene, propylene later
Acid butyl ester and methacrylic acid carry out pre-emulsification.
The waterborne suede leather slurry of the present invention, it is preferred that in being also comprised the following components in the waterborne suede leather slurry
It is one or more：Filler, dispersant, mill base and thickener, preferably at least added with filler, dispersant and thickener.
The filler, preferably includes, but is not limited to wood powder, titanium dioxide, calcium carbonate, talcum powder, kaolin, white carbon,
It is one or more in carbon black, calcium sulfate.More preferable talcum powder, the preferred 500-4000 mesh of mesh number, present inventor have found
Add in talcum powder in the formula of size system of the present invention, with layered crystal structure, have the trend that easily splits into scale and
Slip, can obtain the unctuousness of similar corium, and product feel is preferable.
The dispersant is preferably included in polyacid homopolymer, hydrophilic polynary acid copolymer, hydrophobic polynary acid copolymer
It is one or more, it is specific preferably but to be not limited to ROHM AND HAAS OROTAN 731A or Nuo Puke dispersants SN 5040 etc., can
Fabulous fully compatible property is obtained, and there is good conformability with polyurethane thickener.
The foaming agent uses the existing foaming agent in this field, such as can preferably include dodecyl sulphate
Sodium, sodium sulfate of polyethenoxy ether of fatty alcohol, rosin soap, stearic acid amine, silicones polyethers type of latex type etc. are surfactant-based,
More preferable stearic acid amine foaming agent, such as, but not limited to Bu Saite'sSTA etc..
The foam stabilizer uses the existing foam stabilizer in this field, preferably includes succinic acid salt foam stabilizer, specifically
It can be but not limited to Bu Saite'sSR etc..
The thickener uses the existing thickener in this field, and it is inorganic to preferably include cellulose family, bentonite etc.
Thickener, alkaline acrylic acid, hydrophobically modified acrylic compounds are one or more in non-ionic associative type polyurethane thickener；It is excellent
Select the one or more of non-ionic associative type polyurethane class；Forming and type thickener for ten thousand China's chemistry can be specifically but not limited toU605/U300 or Ning Baidi thickeners PS166, Tao Shi ROHM AND HAAS RM-8w, Tao Shi Luo Menha
It is one or more in this RM-12w etc..More preferable high shear thickener (such as ten thousand China's chemistryU300 etc.) and
It is low cut thickener (such as ten thousand China chemistryU605 etc.) it is applied in combination, the preferred mass ratio of the two is 3：7-7：3,
High shear thickener adjustment slurry easily foams, and low-shear viscosity can make the slurry after foaming, be not easy brokenly bubble, viscosity stabilization, the two
Synergistic effect contributes to the preparation of slurry and improves the storage stability of slurry.The shearing speed of the high shear thickener
Rate range >=1000S-1, such as 1000S-1-10000S-1, the range of shear rate of the low sheraing thickener is in 0.001-
0.1S-1。
The mill base is not specially limited, and those skilled in the art can select required mill base according to actual needs.
In a kind of preferred embodiment of the present invention, in the waterborne suede leather slurry, the filler is preferably 1-10 matter
Measure part, further preferably 2-5 mass parts；The dispersant is preferably 0.2-0.5 mass parts, further preferred 0.3-0.4 matter
Measure part；The mill base is preferably 3-10 mass parts, further preferably 4-6 mass parts；The thickener is preferably 0.5-3 mass
Part, further preferably 1-2 mass parts.
The waterborne suede leather slurry of the present invention, in a kind of preferred embodiment, including each of following mass parts
Component, to obtain preferable product comprehensive performance：
Aqueous polyurethane dispersion 70-95 mass parts, preferably 80-90 mass parts；
Aqueous acrylic emulsion 5-30 mass parts, preferably 10-25 mass parts；
Foam stabilizer 1-5 mass parts, preferably 2-3 mass parts；
Foaming agent 1-5 mass parts, preferably 2-3 mass parts.
Filler 1-10 mass parts, preferably 2-5 mass parts；
Dispersant 0.2-0.5 mass parts, preferably 0.3-0.4 mass parts；
Mill base 3-10 mass parts, preferably 4-6 mass parts；
Thickener 0.5-3 mass parts, preferably 1-2 mass parts.
Second aspect of the present invention provides a kind of preparation method of waterborne suede leather processing slurry, includes the following steps：It will be upper
The each component mixing of waterborne suede leather slurry described in text is uniformly dispersed, and foams later, expansion ratio is 1-5 multiplying powers, excellent
Select 2-3 multiplying powers；Using preferred expansion ratio, slurry is on the one hand made to be set in the surface of fleece with porous structure, it can be effective
Feel is improved, fine and smooth bubble structure can also ensure matte zero defect, with the uniform distribution of matte；On the other hand starching amount is reduced,
Cost performance is improved, has approached the cost of solvent type electronic packaging suede slurry.The viscosity that foams can be 3000-7000cp,
It is preferred that 4000-6000cp.
In a kind of specific embodiment, waterborne suede is removed from office into the aqueous polyurethane dispersion and water soluble acrylic acid in slurry
Dispersion is mixed in lotion, add in dispersant under stirring condition and filler disperseed (specifically can be at 600-800 revs/min
Rotating speed stirring, can first add in dispersant, stir 10-20 minute, be stirred 20-30 minutes after addition filler), after being uniformly dispersed
It adds in foaming agent, foam stabilizer and mill base to continue to stir (can specifically stir 10-20 minutes), adds in thickener later and adjust viscosity,
Then it foams.
Third aspect present invention provides a kind of method using wet processing processing suede, includes the following steps：It will rise
Flannelette carries out water repellent processing, and drying carries out rolling processing preferably after water repellent processing and before drying；Waterborne suede is removed from office into slurry
It is applied on (can be specifically the modes such as blade coating) fleece, is then immersed in solidification liquid and is solidified, washed, done later
Dry (preferably dry preceding progress rolling processing after water washing) and sanding processing；The waterborne suede leather slurry is described above
Waterborne suede leather processing slurry made from preparation method.The grinding wheel of 100-240 mesh numbers specifically may be used in sanding processing therein
It carries out, is selected according to actual demand.
Preferably, water repellent processing is handles suede using water repellent, the water repellent is quaternary ammonium salt compound,
It is one or more in organo-silicon compound, fluorochemical；The further preferably quaternary ammonium salts water repellent of cationic, example
Such as water-proofing agent PF, your DTM-648 of Ai Hao etc..In the wet processing of the present invention, to reach good feel, the pre-treatment of base fabric is adopted
Hydrophobic molecule layer is formed in fabric surface with water repellent, low-fiber surface energy is dropped, coating is made to float on fuzzy surface, after sanding
It can reach excellent feel；Wherein still preserved between yarn between the fiber of fabric after the quaternary ammonium salts water repellent arrangement of cationic
A large amount of hole, slurry penetration can be effectively prevent to make the slurry of blade coating to base material back between matte and bottom surface, can avoid
Feel plate is hard, improves velvet, still keeps good ventilative and penetrability.
Preferably, the solidification liquid be soluble metallic salt mixed solution, the soluble metallic salt preferably include but
Be not limited to it is one or more in CALCIUM CHLORIDE DIHYDRATE, Aluminium chloride hexahydrate, calcium chloride and aluminium chloride etc., the solidification liquid it is dense
Degree is preferably 0.2-5wt%.The wet processing of the present invention is solidified after applying slurry, preferably makes slurry by ionizable metal salt
Aqueous polyurethane in material carries out flocculation curing, on the one hand can obtain the face coat of stable porous structure, on the other hand may be used
By flocculation, strength of coating is provided, and then coordinate rolling method, squeeze out most moisture of aqueous slurry, effectively increase drying
Speed.
Fourth aspect present invention provides a kind of using suede made from method as discussed above, it is preferred that the matte
Remove from office the suede to be adapted to electronic packaging.
Technical solution provided by the invention has the advantages that：
The waterborne suede leather slurry of the present invention, there is no plasticiser and organic solvents in production and use, can
Avoid the thus harm caused by producers.The suede hand that the waterborne suede leather slurry of the present invention is obtained by wet processing
Ganfeng is expired, fine and smooth, and with the excellent hydrolysis property of resistance to jungle, processes easy sanding, production efficiency is high, no any VOC residuals, right
Environment is very friendly；The electronic products increasingly higher demands such as electronic packaging such as cell-phone cover, tablet computer protective sleeve can be met.
Waterborne suede using the present invention removes from office slurry, and by wet processing, sanding processing can obtain excellent resilience, plentiful
Feel, the suede of velvet exquisiteness.
The waterborne suede of the present invention removes from office slurry especially suitable for processing suede using wet processing, can replace tradition
Oiliness PU and PVC make electronic packaging leather；And completely new solvent-free, free of contamination wet process technique can be used, therefore to life
Production personnel and environment are all quite friendly.
Specific embodiment
For a better understanding of the technical solution of the present invention, with reference to the embodiment content that the present invention is further explained,
But present disclosure is not limited only to following embodiment.
The primary raw material used in embodiment is described as follows below：
(association type non-ionic polyurethane type thickener, 25% contains U605 admittedly, and ten thousand magnificent chemical groups are limited
Company)；
(association type non-ionic polyurethane type thickener, 30% contains U300 admittedly, ten thousand magnificent chemical groups shares
Co., Ltd)；
STA (foaming agent, stearic acid amine, Italian Bu Saite groups latex foam stabilizer)；
SR (foam stabilizer, succinic acid salt, Italian Bu Saite groups latex foam stabilizer)；
OROTAN 731A (polyacrylic acid sodium salt waterborne pigment dispersant, ROHM AND HAAS)；
TSELR22 (TSE LR* series use for synthetic leather aqueous color pastes, the bright science and technology of Suzhou generation)
WANOL C2056：Pure PO, ten thousand China's chemistry；
WANOL C2140：The polyether polyol of PO/EO copolymerization, EO amounts about 20wt%, ten thousand China's chemistry；
Solidification liquid：2 mass parts of CALCIUM CHLORIDE DIHYDRATE, 0.2 mass parts of Aluminium chloride hexahydrate, 97.8 mass parts of deionized water,
Dispersion obtains solution.
The synthetic resin arrived involved in embodiment is as follows：
The preparation of aqueous polyurethane dispersion A：
By 223g WANOL C2056 (polyether polyol), 44gTDI 80 (toluene di-isocyanate(TDI)), 5g 1,4- fourths two
Alcohol (glycol chain extender), 5g dihydromethyl propionic acids (hydrophilic chain extender) and 50g acetone (solvent) are added to be passed in and out equipped with nitrogen
In the 1L four round flask of mouth, the mixture is stirred at 75 DEG C until NCO reaches 1.3wt%.Cool to 40-45 DEG C of addition
In 231g acetone and 3.8g triethylamines and about 5min, then the mixture is disperseed by adding 420g water, after dispersion plus
Enter 4g isophorone diamine (small molecule amine chain extender) to continue to stir chain extension 10min.Acetone is separated by distillation out again to obtain later
Solvent-free dispersion was obtained, the solid content with 43wt%, average grain diameter 220nm, pH value is 8.4.
The preparation of aqueous polyurethane dispersion B：
By 400g WANOL C2140 (polyether polyol), 40gTDI80 (toluene di-isocyanate(TDI)), 3g neopentyl glycols (two
First alcohol chain extender), 8g dihydromethyl propionic acids (hydrophilic chain extender) and 50g acetone be added to tetra- mouthfuls of circles of 1L equipped with import and export of nitrogen
In the flask of bottom, the mixture is stirred at 75 DEG C until NCO reaches 0.70wt%.Cool to 40-45 DEG C add in 380g acetone and
In 6.0g triethylamines and about 5min, then the mixture is disperseed by adding 420g water, the different Buddhists of 3.5g are added in after dispersion
Your ketone diamines continues to stir chain extension 10min.It is separated by distillation out acetone again and obtains solvent-free dispersion later, has
The solid content of 46wt%, average grain diameter 270nm, pH value are 8.5.
The preparation of aqueous polyurethane dispersion C：
By 223g WANOL C2056 (polyether polyol), 44gHDI (hexamethylene diisocyanate), 5g 1,4- fourths two
Alcohol (glycol chain extender), 5g dihydromethyl propionic acids (hydrophilic chain extender) and 50g acetone (solvent) are added to be passed in and out equipped with nitrogen
In the 1L four round flask of mouth, the mixture is stirred at 75 DEG C until NCO reaches 1.5wt%.Cool to 40-45 DEG C of addition
In 231g acetone and 3.8g triethylamines and about 5min, then the mixture is disperseed by adding 420g water, after dispersion plus
Enter 4.8g isophorone diamine to continue to stir chain extension 10min.It is separated by distillation out acetone again and obtains solvent-free point later
Granular media, the solid content with 44.2wt%, average grain diameter 201nm, pH value are 8.8.
The preparation of aqueous acrylic emulsion E：
0.7 part of emulsifier SDS and 50 parts of deionized waters are added in reaction kettle, open stirring and heating；By 0.3 part
SDS emulsifiers, 10 parts of deionized waters, 20 parts of methyl methacrylate, 10 parts of styrene, 10 parts of butyl acrylate, metering system
4 parts of acid is added to pre-emulsification in pre-emulsification kettle；The 5wt% of pre-emulsion is taken to make seed and adds in reaction kettle, treats that temperature rises to 80 DEG C, adds
Enter 0.2 part of APS (ammonium persulfate) of initiator and cause polymerization, reaction time 25min；To the end of seed reacts, start to be added dropwise surplus
Remaining pre-emulsion and 0.2 part of initiator, time for adding 2h；Completion of dropwise addition keeps the temperature 2h；45 DEG C of cooling is hereinafter, add in 10 parts of zinc
Ammonia solution, filtering and discharging.Zinc ammonia solution used, consisting of：Zinc oxide 20wt%, ammonium hydroxide 10wt%, water 70%.
The preparation (not carrying out metal ion crosslinked) of aqueous acrylic emulsion F：
0.7 part of emulsifier SDS and 50g deionized water is added in reaction kettle, opens stirring and heating；By 0.3 part of SDS
Emulsifier, 10g deionized waters, 20 parts of methyl methacrylate, 10 parts of styrene, 10 parts of butyl acrylate, 4 parts of methacrylic acid
It is added to pre-emulsification in pre-emulsification kettle；It takes the 5% of pre-emulsion to make seed and adds in reaction kettle, treat that temperature rises to 80 DEG C, add in and cause
0.2 part of APS of agent causes polymerization, reaction time 25min；To the end of seed reacts, start that remaining pre-emulsion and 0.2 is added dropwise
Part initiator, time for adding 2h；Completion of dropwise addition keeps the temperature 2h；Less than 45 DEG C of cooling, filtering and discharging.
Embodiment 1
" part " being previously mentioned in the formula of embodiment refers both to mass parts, is also in this way, repeating no more in other embodiment.
In the present embodiment, aqueous dispersions of polyurethanes A mass parts with4316, dispersant (731A), 600 revs/min rotating speed stir 10 minutes, then add in talcum powder (mesh number 2000), 800 turns/
The rotating speed of minute stirs 15 minutes, addition foaming agent (STA), foam stabilizer (SR), aqueous red slurry
(the bright science and technology TSELR22 of generation), thickener (VesmodyU300, aqueous polyurethane thickener), thickener (VesmodyU605, water
Property polyurethane thickener), stirred 15 minutes with 1000 revs/min of rotating speeds, the slurry that obtained viscosity is about 4000cp uses machine
Tool foaming machine (Italian GEMAT foaming machines MICROMIX/14) 2 times of expansion ratio.
Embodiment 2
In the present embodiment, aqueous dispersions of polyurethanes B with4316, dispersant (
731A), 600 revs/min of rotating speed stirs 10 minutes, then adds in talcum powder (mesh number 2000), and 800 revs/min of rotating speed stirs
It mixes 15 minutes, addition foaming agent (STA), foam stabilizer (SR), aqueous red slurry (the bright science and technology of generation
TSELR22), thickener (VesmodyU300, aqueous polyurethane thickener), (VesmodyU605, aqueous polyurethane increase thickener
Thick dose), it is stirred 15 minutes with 1000 revs/min of rotating speeds, the slurry that obtained viscosity is about 4000cp；It is sent out using mechanical foaming machine
Steep 2 times of multiplying power.
Embodiment 3
In the present embodiment, aqueous dispersions of polyurethanes A with4316, dispersant (
731A), 600 revs/min of rotating speed stirs 10 minutes, then adds in talcum powder (mesh number 2000), and 800 revs/min of rotating speed stirs
It mixes 15 minutes, addition foaming agent (STA), foam stabilizer (SR), aqueous red slurry (the bright science and technology of generation
TSELR22), thickener (VesmodyU300, aqueous polyurethane thickener), (VesmodyU605, aqueous polyurethane increase thickener
Thick dose), it is stirred 15 minutes with 1000 revs/min of rotating speeds, the slurry that obtained viscosity is about 4000cp；It is sent out using mechanical foaming machine
Steep 4 times of multiplying power.
Embodiment 4
In the present embodiment, aqueous dispersions of polyurethanes A and aqueous acrylic emulsion E, aqueous dispersion (731A), 600 revs/min rotating speed stir 10 minutes, then add in talcum powder (mesh number 2000), 800 turns/
The rotating speed of minute stirs 15 minutes, addition foaming agent (STA), foam stabilizer (R), aqueous red slurry
(the bright science and technology TSELR22 of generation), thickener (VesmodyU300, aqueous polyurethane thickener), thickener (VesmodyU605, water
Property polyurethane thickener), stirred 15 minutes with 1000 revs/min of rotating speeds, the slurry that obtained viscosity is about 4000cp uses machine
2 times of tool foaming machine expansion ratio.
Embodiment 5
In the present embodiment, aqueous dispersions of polyurethanes C with4316, dispersant (
731A), 600 revs/min of rotating speed stirs 10 minutes, then adds in talcum powder (mesh number 2000), and 800 revs/min of rotating speed stirs
It mixes 15 minutes, addition foaming agent (STA), foam stabilizer (SR), aqueous red slurry (the bright science and technology of generation
TSELR22), thickener (VesmodyU300, aqueous polyurethane thickener), (VesmodyU605, aqueous polyurethane increase thickener
Thick dose), it is stirred 15 minutes with 1000 revs/min of rotating speeds, the slurry that obtained viscosity is about 4000cp；It is sent out using mechanical foaming machine
Steep 2 times of multiplying power.
Embodiment 6
In the present embodiment, aqueous dispersions of polyurethanes A with4316, addition foaming agent (
STA), foam stabilizer (SR), aqueous red slurry (the bright science and technology TSELR22 of generation), and thickener (VesmodyU300, it is aqueous
Polyurethane thickener), thickener (VesmodyU605, aqueous polyurethane thickener) stirs 15 with 1000 revs/min of rotating speeds
Minute, the slurry that obtained viscosity is about 4000cp；Use 2 times of mechanical foaming machine expansion ratio.
Embodiment 7
In the present embodiment, aqueous dispersions of polyurethanes A with4316, dispersant (
731A), 600 revs/min of rotating speed stirs 10 minutes, then adds in talcum powder (mesh number 2000), and 800 revs/min of rotating speed stirs
It mixes 15 minutes, addition foaming agent (STA), foam stabilizer (SR), aqueous red slurry (the bright science and technology of generation
TSELR22), thickener (VesmodyU300) is stirred 15 minutes with 1000 revs/min of rotating speeds, and obtained viscosity is about 4000cp
Slurry；Use 2 times of mechanical foaming machine expansion ratio.
Comparative example 1
" part " that the formula of this comparative example occurs refers both to mass parts, other comparative examples are also in this way, repeating no more.
Preparation process and embodiment 1 are essentially identical, are different only in that with the expansion ratio that mechanical foaming agent is foamed be 0.
Comparative example 2
Preparation process and embodiment 1 are essentially identical, are different only in that and do not add in aqueous acrylic emulsion.
Embodiment 8
Preparation process and embodiment 1 are identical, repeat no more.
The performance test methods being related to are introduced below：
Viscosity test:Rich power flies, LV, GB/T 2794-2013,63#, 12r/min
The test of particle diameter：Emulsion particle diameter test is carried out using Zeta potential and nano-particle size analysis instrument, by dispersion
Concentration dilution is to 0.1%, and test temperature is 25 DEG C, and laser light scattering angle is 90 °.
Resistance to jungle hydrolyzes test method：Fleece water-proofing agent PF water repellent is handled, carrying liqs rate 50%, 80 DEG C of baking oven
Middle drying；Waterborne suede leather processing slurry made from above example and comparative example is scratched on fleece respectively, thickness control
It makes in 0.8mm, is then immersed in solidification liquid and is solidified, washed, dried after 5min, processed with 200 mesh sand paper sandings；
Electronic packaging suede is made.It places 1 day, clot is put into the climatic chamber of 70 DEG C of temperature and 95% humidity, weekly on time
It takes out, surface is carried out, to pasting the property such as tacky by control group (not scratching waterborne suede leather processing slurry, other operation all sames)
It can judge.Whether whether surface property main detection villus is uniform, defective.To pasting tacky performance：The sample cloth of 4cm*4cm, 3kg
Pressure is taken out, the dynamics of judgement after opening for 24 hours to pasting in placement climatic chamber.
Stability test method (slurry storage stability)：1 kilogram of slurry is taken in 1 kilogram of plastic bottle, is sealed, room temperature is quiet
It puts, observes viscosity change and brokenly bubble phenomenon；
Contrast test:
Control material is solvent type matte packaging leather:Dongguan City Green's leather Co., Ltd, article No.:South Korea imitates woven fabric, thick
It spends for 0.4mm, breadth 137cm, color is No. 17 colors.
Appearance test method：Eye, which is seen, to be judged, includes whether defective, covering power.By comparing solvent type packaging leather
Marking, evaluation and test grade is referring to table 1；
Feel test method：It is grabbed and touched by hand and carry out feel judgement, plentiful including texture, the senses of touch such as toughness；Pass through
Solvent type packaging leather marking is compared, evaluation and test grade is referring to table 1；
Velvet test method：It is touched by hand, villus is uniform, fine and smooth；By comparing solvent type packaging leather marking, grade is evaluated and tested
Referring to table 1.
Table 1 evaluates and tests grade reference table
The performance test results of obtained aqueous polyurethane electronics matte packaging leather are shown in Table 2.
Table 2
From more than experimental result：In embodiment 1-8, using preferred isocyanic acid when preparing aqueous polyurethane dispersion
Embodiment 5 of the embodiment of ester TDI than not using the preferred isocyanate, has the preferable hydrolysis property of resistance to jungle.Without making
With the embodiment 6 of filler talcum powder, feel is slightly worse, and other embodiment is respectively provided with wet and slippery feel.Using low sheraing thickener
With the slurry system of high shear thickening agent combination made from product, there is better storage performance, foam is also more stable；And implement
7 storage performance relative mistake of example is a little.Comparative example 1 is does not foam, and expansion ratio 0 is compared with the embodiment of the present invention, it is difficult to shape
Into foam structure, after sanding, feel plate is hard.Comparative example 2 is compared with the embodiment of the present invention, and in roughing process, effect is poor, obtains
The suede feel and velvet arrived is poor.Embodiment 8 is compared with other embodiment, and the water of preferred metal ion crosslinked is not used
Property acrylic emulsion, grinability is slightly worse, and the feel velvet of suede product obtained is slightly worse.
It will be understood by those skilled in the art that under the introduction of this specification, the present invention can be made some modifications or
Adjustment.These modifications or adjustment should also be as within the scope of the claims in the present invention.
Claims (11)
1. a kind of waterborne suede removes from office slurry, which is characterized in that it includes each component of following mass parts：
Aqueous polyurethane dispersion 70-95 mass parts, preferably 80-90 mass parts；
Aqueous acrylic emulsion 5-30 mass parts, preferably 10-25 mass parts；
Foam stabilizer 1-5 mass parts, preferably 2-3 mass parts；
Foaming agent 1-5 mass parts, preferably 2-3 mass parts.
2. waterborne suede according to claim 1 removes from office slurry, which is characterized in that the aqueous polyurethane dispersion is to include
Isocyanates, polyalcohol, chain extender raw material isocyanate-terminated prepolymer obtained by the reaction, it is neutralized and be dispersed in water
It obtains；
Preferably, the isocyanates is one or more in aromatic series, aliphatic and alicyclic diisocyanate；Into one
Step preferably isophorone diisocyanate, 4,4'- dicyclohexyl methyl hydride diisocyanates, toluene di-isocyanate(TDI), diphenyl
It is one or more in methane diisocyanate, hexamethylene diisocyanate, more preferably toluene di-isocyanate(TDI)；
Preferably, the polyalcohol is one or more in polyether polyol, polyester polyol, polycarbonate polyol；
Further preferred number-average molecular weight is the polyether polyol of 300-5000 dalton；Still more preferably described polyether polyol is
Polytetrahydrofuran polyol, polyethylene glycol polyalcohol, polypropylene glycol polyalcohol, polyethylene glycol-propylene glycol polyol, polyoxy
Change one or more in the polyether polyol of propylene polyalcohol and PO/EO copolymerization；The polyether polyol of the PO/EO copolymerization
In, EO contents are preferably smaller than 30% equal to polyether polyol quality；
Preferably, the chain extender includes hydrophilic chain extender, preferably further includes glycol chain extender；The glycol chain extender is excellent
It is selected as one or more in ethylene glycol, 1,4- butanediols, neopentyl glycol, 1,6-HD；The hydrophilic chain extender is preferably
Anion chain extender, further preferably dihydroxypropionic acid, dimethylolpropionic acid, dihydroxy half ester, ethylenediamine base ethanesulfonic acid sodium
In it is one or more.
3. waterborne suede according to claim 2 removes from office slurry, which is characterized in that the grain size of the aqueous polyurethane dispersion
For 200-350nm；Its solid content is preferably 40-50%；
Preferably, based on the raw material gross mass for preparing the aqueous polyurethane dispersion, the dosage of the hydrophilic chain extender is 1-
10%, preferably 1.5-4%.
4. the waterborne suede leather slurry according to Claims 2 or 3, which is characterized in that prepare the aqueous polyurethane dispersion
The raw material of body includes each component of following mass parts：5-20 parts of isocyanates, 75-95 parts of polyalcohol, glycol chain extender 0-5
Part, hydrophilic chain extender 1.5-4.
5. waterborne suede according to claim 1 removes from office slurry, which is characterized in that the aqueous acrylic emulsion for metal from
The crosslinked acrylic acid ester emulsion of son.
6. waterborne suede according to claim 5 removes from office slurry, which is characterized in that the acrylate of the metal ion crosslinked
Lotion is Wan Hua chemical companies4316 styrene-acrylic emulsions；Or the acrylic acid ester emulsion of the metal ion crosslinked is adopted
It is made with the raw material including following mass parts：10-30 parts of methyl methacrylate, 5-15 parts of styrene, butyl acrylate 5-15
Part, 1-5 parts of methacrylic acid, 5-15 parts of zinc ammonia solution, 0.5-2 parts of emulsifier, 0.1-0.5 parts of initiator, 50-70 parts of water；
Preferably, in the zinc ammonia solution, the mass percent of zinc oxide is 5-25%, and the mass percent of ammonium hydroxide is 5-
10%, surplus is water；
Preferably, the preparation process of the acrylic acid ester emulsion of the metal ion crosslinked includes：By emulsifier, water and methyl-prop
E pioic acid methyl ester, styrene, butyl acrylate and methacrylic acid carry out pre-emulsification, obtain pre-emulsion；By the 1- of pre-emulsion
10wt% treats that temperature reaches 50-90 DEG C, the 10-60wt% initiations for adding in initiator total amount polymerize to obtain seed emulsion as seed；
Remaining pre-emulsion and remaining initiator are added dropwise into seed emulsion, keeps the temperature 0.5-3h, is cooled to 45 DEG C hereinafter, adding in zinc
Ammonia solution；It is further preferred that when carrying out the pre-emulsification, first add in the 10-70wt% of emulsifier total amount emulsifier and
The water of the 70-90wt% of water inventory is stirred, and adds remaining emulsifier and water and methyl methacrylate, benzene later
Ethylene, butyl acrylate and methacrylic acid carry out pre-emulsification.
7. slurry is removed from office according to claim 1-6 any one of them waterborne suede, which is characterized in that the waterborne suede removes from office slurry
In also comprise the following components in it is one or more：Filler, dispersant, mill base and thickener preferably at least added with filler, divide
Powder and thickener；
The filler is preferably 1-10 mass parts, further preferably 2-5 mass parts；The dispersant is preferably 0.2-0.5 matter
Measure part, further preferred 0.3-0.4 mass parts；The mill base is preferably 3-10 mass parts, further preferably 4-6 mass parts；
The thickener is preferably 0.5-3 mass parts, further preferably 1-2 mass parts；
Preferably, the filler includes wood powder, titanium dioxide, calcium carbonate, talcum powder, kaolin, white carbon, carbon black, calcium sulfate
In it is one or more, more preferably mesh number be 500-4000 talcum powder；
Preferably, the dispersant in polyacid homopolymer, hydrophilic polynary acid copolymer, hydrophobic polynary acid copolymer one
Kind is a variety of；
Preferably, the foaming agent is selected from lauryl sodium sulfate, sodium sulfate of polyethenoxy ether of fatty alcohol, rosin soap, tristearin
It is one or more in acid amide class, silicones polyethers type of latex type surfactant；
Preferably, the foam stabilizer is selected from succinic acid salt foam stabilizer；
Preferably, the thickener is selected from inorganic thickening agent, alkaline acrylic acid, hydrophobically modified acrylic compounds, non-ionic associative type
It is one or more in polyurethane thickener, preferably non-ionic associative type polyurethane thickener, more preferably high shear thickener
With low sheraing thickener combination, range of shear rate >=1000S of the high shear thickener-1, the low sheraing increasing
Thick dose of range of shear rate is in 0.001-0.1S-1。
8. waterborne suede according to claim 7 removes from office slurry, which is characterized in that the waterborne suede leather slurry includes as follows
The each component of mass parts：
Aqueous polyurethane dispersion 70-95 mass parts, preferably 80-90 mass parts；
Aqueous acrylic emulsion 5-30 mass parts, preferably 10-25 mass parts；
Foam stabilizer 1-5 mass parts, preferably 2-3 mass parts；
Foaming agent 1-5 mass parts, preferably 2-3 mass parts.
Filler 1-10 mass parts, preferably 2-5 mass parts；
Dispersant 0.2-0.5 mass parts, preferably 0.3-0.4 mass parts；
Mill base 3-10 mass parts, preferably 4-6 mass parts；
Thickener 0.5-3 mass parts, preferably 1-2 mass parts.
9. a kind of preparation method of waterborne suede leather processing slurry, which is characterized in that include the following steps：By claim 1-8
The each component mixing of any one of them waterborne suede leather slurry is uniformly dispersed, and foams later, and expansion ratio is 1-5 times
Rate, preferably 2-3 multiplying powers.
A kind of 10. method using wet processing processing suede, which is characterized in that include the following steps：
1) fleece is subjected to water repellent processing, drying；It is preferred that also carry out rolling processing after water repellent processing；
2) waterborne suede is removed from office processing slurry to be applied on fleece, is then immersed in solidification liquid and is solidified, carry out water later
Wash, dry and sanding processing；It is preferred that rolling processing is also carried out after water washing；The waterborne suede leather processing slurry uses right
It is required that the preparation method described in 9 is made；
Preferably, water repellent processing is handles suede using water repellent, and the water repellent is quaternary ammonium salt compound, organic
It is one or more in silicon compound, fluorochemical；The further preferably quaternary ammonium salts water repellent of cationic；
Preferably, the solidification liquid is the mixed solution of soluble metallic salt, and the soluble metallic salt preferably includes two hydrations
One or more in calcium chloride, Aluminium chloride hexahydrate, calcium chloride and aluminium chloride, the concentration of the solidification liquid is preferably 0.2-
5wt%.
It is 11. a kind of using suede made from method according to any one of claims 10, it is preferred that the suede is is adapted to electronics
The suede of packaging.
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| CN114836995A (en) * | 2022-05-25 | 2022-08-02 | 东莞市艾瑞手袋有限公司 | Waterproof wear-resistant leather and preparation method thereof |
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