CN106702760A - Waterborne polyurethane superfine fiber synthetic leather original base fabric and preparation method thereof - Google Patents

Waterborne polyurethane superfine fiber synthetic leather original base fabric and preparation method thereof Download PDF

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Publication number
CN106702760A
CN106702760A CN201611150092.7A CN201611150092A CN106702760A CN 106702760 A CN106702760 A CN 106702760A CN 201611150092 A CN201611150092 A CN 201611150092A CN 106702760 A CN106702760 A CN 106702760A
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China
Prior art keywords
base fabric
fabric
aqueous
preparation
synthetic leather
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CN201611150092.7A
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CN106702760B (en
Inventor
杨银龙
韩芹
张其斌
段伟东
杜明兵
刘国
张�浩
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Shanghai Huafeng Super Fiber Technology Co.,Ltd.
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SHANGHAI HUAFON MICREOFIBRE TECHNOLOGY Co Ltd
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    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
    • 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
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
    • 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
    • D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
    • 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
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • 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
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0068—Polymeric granules, particles or powder, e.g. core-shell particles, microcapsules
    • 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
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • 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
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/02—Dispersion
    • D06N2205/023—Emulsion, aqueous dispersion, latex
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/28—Artificial leather
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Abstract

The invention discloses a waterborne polyurethane superfine fiber synthetic leather original base fabric and a preparation method thereof. The preparation method comprises the following steps: (1) impregnating an island type non-woven fabric in water-based impregnating resin containing polymer micro-particles, and then scraping off the resin on the surface of the island type non-woven fabric to obtain an impregnated base fabric, wherein the polymer micro-particles are one or more of polyolefin micro-particles or polystyrene micro-particles; and (2) putting the impregnated base fabric into methylbenzene to perform decrement so as to obtain the original basic fabric. According to the preparation method disclosed by the invention, under the condition that the processes are not increased, the size and amount of a cellular structure are adjusted by changing the size and amount of the polymer micro-particles, so that diversification of the product is achieved, the polymer after decrement can be recycled together with marine facies, and waterborne polyurethane superfine fiber synthetic leather prepared by adopting the prepared base fabric has a relatively exquisite cellular structure.

Description

Primary base fabric of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof
Technical field
The present invention relates to a kind of preparation method for preparing the primary base fabric of polyurethane ultrafine fiber synthetic leather.
Background technology
Superfine fiber chemical leather is the composite being made up of superfine fibre and polyurethane, with structure simulation, is breathed freely The features such as property, flexibility, be one of preferable alternative materials of corium, is widely used in the fields such as sofa, automobile, case and bag, shoemaking. At present, most of domestic superfine fiber chemical leather is all that toluene decrement process is prepared from, and its exemplary steps is as follows：1) by sea The DMF solution of island non-woven fabrics impregnating polyurethane, and in DMF-H2Solidification forms microporous polyurethane in O solution；2) by hot first Benzene extracts the marine facies in fiber out；3) by drying, oil, the handling process such as dye and be made superfine fiber synthetic leather base cloth；4) lead to Cross the technique such as veneer or mill skin and be made resultant Leather.The advantage of the technique is that the polyurethane component in superfine fiber chemical leather possesses Substantial amounts of microcellular structure, the synthetic leather good hand feeling being made, softness, kishke feel are strong；Shortcoming has largely used molten during being Agent DMF, certain pollution is caused to environment, and need to consume the substantial amounts of energy when DMF is reclaimed.
Aqueous polyurethane superfine fiber synthetic leather is replaced with water in preparation process by by solvent borne polyurethane maceration extract Property polyurethane impregnated liquid, the solvent reduced in production process is used.But during fabric of island-in-sea type non-woven fabrics dipping waterborne polyurethane resin Microcellular structure how is produced to annoying the development of aqueous ultrafine fiber synthetic leather always.Domestic pharmaceutical industry proposed certain methods, such as Mechanical foaming, salt bath cohesion, acid bath cohesion, chemical blowing etc..But mechanical foaming can filter out part gas by fabric of island-in-sea type non-woven fabrics Steep and be difficult to control to, salt bath and acid bath cohesion can increase leather fragility and cause pliability not enough, chemical blowing there is presently no Suitable for the foaming agent of aqueous polyurethane system.
The content of the invention
It is an object of the invention to provide primary base fabric of a kind of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof, With the defect for overcoming prior art to exist.
The preparation method of the primary base fabric of described aqueous polyurethane superfine fiber synthetic leather, comprises the following steps：
(1) in fabric of island-in-sea type non-woven fabrics impregnated in into the aqueous impregnating resin containing polymer particles, control liquid holdup is 80 ~100%, the resin of fabric of island-in-sea type nonwoven surface is then struck off, 90~130 DEG C of drying obtain dipping base fabric；
Described polymer particles are one or more of polyolefin fine particle or ps particle；
(2) decrement is carried out in above-mentioned dipping base fabric being put into toluene, toluene temperature is 75~90 DEG C, the time is 1~3 small When, the base fabric after decrement is dried at 110~130 DEG C, obtain primary base fabric；
Described primary base fabric, by conventional method, is post-processed, you can obtain described aqueous polyurethane ultra-fine Fiber synthetic leather；
The method of described post processing is conventional, and those skilled in the art can be according to document (such as document：Qu Jian Ripple synthetic leather technology [M] Chemical Industry Press, 2010.) report method carry out the dyeing of primary base fabric, oil, grind The PROCESS FOR TREATMENTs such as skin, napping obtain aqueous ultrafine fiber polyurethane synthetic leather base fabric, and the base fabric can be used for footwear leather, sofa artificial leather, hand The production of set leather, luggage leather, interior leather for automobiles etc., according to the difference of target product, may be selected different 100% modulus and solid weight Polymer particles of aqueous polyurethane emulsion, Different Weight part and size of part etc. are measured to realize.
Preferably, the described aqueous impregnating resin containing polymer particles, is made up of the component of following weight portion：
Described polyolefin choosing may be selected from polyethylene, polypropylene, and the D50 of particulate is 5~25 microns, described polystyrene Particulate D50 is 5~25 microns；
Described polyolefin fine particle can use commercially available prod, such as：Polyethylene Particles can be using Nanjing day poem new material science and technology Co., Ltd's trade mark is product of PEW-0200, PEW-0301 etc., and polypropylene microparticle can be had using Nanjing day poem new material science and technology The limit company trade mark is product of PPW-0901 etc.；
Or, polyethylene, polypropylene or polystyrene ball milling powder are broken to D50 for 5~25 microns；
Said components are well mixed, the aqueous impregnating resin of 25 DEG C of 3000~6000mPa.S of viscosity@is obtained；
The solid weight part of described aqueous polyurethane emulsion is 25~55%, is preferably 40~50%；
100% modulus of described aqueous polyurethane emulsion is 1.0~10.0Mpa, is preferably 3.0~8.0MPa；
Described wetting agent is polyether modified silicon oil, can be using commercially available prod such as XIAMETEROFX-5211FLUID etc..
Described thickener is aqueous polyurethane type thickener or polyacrylic acid aqueous solution type thickener, can use commercially available product Product are such asGel 0625、Gel ALA etc..
Know-why of the invention is：
Using the process characteristic of toluene decrement, polymer particles are added thereto to when aqueous impregnating resin is prepared, and While toluene subtracts sea-island fibre marine facies formation superfine fibre, polymer particles are subtracted so as to form microporous polyurethane, simulate The foam structure of polyurethane component, realizes the plentiful, soft of aqueous ultrafine fiber synthetic leather in conventional superfine fiber chemical leather It is soft, the characteristics of kishke feel is strong.
Compared with prior art, the beneficial effects of the invention are as follows：
Using the process characteristic of toluene decrement, under conditions of operation is not increased, by the size for changing polymer particles With how much come adjust the size of foam structure with it is how many, so as to realize the variation of product, decrement polymer particles out can The recycling together with marine facies, using the aqueous polyurethane superfine fiber synthetic leather prepared by prepared base fabric, possess compared with It is fine and closely woven foam structure.
Brief description of the drawings
Fig. 1 is the electromicroscopic photograph of the product of embodiment 1.
Fig. 2 is the electromicroscopic photograph of the product of embodiment 2.
Fig. 3 is the electromicroscopic photograph of the product of embodiment 3.
Fig. 4 is the electromicroscopic photograph of the product of embodiment 4.
Fig. 5 is the electromicroscopic photograph of the product of comparative example 1.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair It is bright, rather than limit protection scope of the present invention.Technical staff makes according to the present invention in actual applications improvement and tune It is whole, still fall within protection scope of the present invention.Following examples are raw materials used to be commercially available or self-control.
Embodiment 1
The preparation process of the aqueous ultrafine fiber synthetic leather of the present embodiment is as follows：
The preparation of aqueous impregnating resin：
Table 1
Raw material in table 1 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 3000mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into the aqueous impregnating resin, liquid holdup 100% is controlled, surface resin is scraped with scraper Fall, then dried in 90 DEG C of baking ovens, dipping base fabric is obtained；To be subtracted with 75 DEG C of toluene during dipping base fabric puts into decrement operation Amount 3 hours, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained.
By primary base fabric according to the method for document report by dyeing, oiling, grind skin, veneer, you can obtain described water Property polyurethane ultrafine fiber synthetic leather, can be used for shoemaking.
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd. The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO 17235-2002.Survey Test result and feel are as follows：
Polyurethane component micropore size D50：5.1 microns, pliability：2.8, feel：It is hard but flexible, kishke feel are strong.Electricity Mirror photo is shown in Fig. 1.
Embodiment 2
The preparation of aqueous impregnating resin：
Table 2
Raw material in table 2 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 6000mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into the aqueous impregnating resin, liquid holdup 80% is controlled, surface resin is scraped with scraper Fall, then dried in 130 DEG C of baking ovens, dipping base fabric is obtained；To be subtracted with 90 DEG C of toluene during dipping base fabric puts into decrement operation Amount 1 hour, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained；
Primary base fabric is closed according to the method for document report by dyeing, napping, the prepared matte aqueous ultrafine fiber that oils Finished leather, can be used for clothes, gloves, decoration etc..
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd. The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO 17235-2002.Survey Test result and feel are as follows：
Polyurethane component micropore size D50：24.3 microns, pliability：6.1, feel：Soft and plentiful, skin sense is strong, sense of touch It is good, with a good drape effect.Electromicroscopic photograph is shown in Fig. 2.
Embodiment 3
The preparation process of the aqueous ultrafine fiber synthetic leather of the present embodiment is as follows：
The preparation of aqueous impregnating resin：
Table 3
Raw material in table 3 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 5500mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into the aqueous impregnating resin, liquid holdup 90% is controlled, surface resin is scraped with scraper Fall, then dried in 120 DEG C of baking ovens, dipping base fabric is obtained；To be subtracted with 80 DEG C of toluene during dipping base fabric puts into decrement operation Amount 2 hours, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained.
Primary base fabric is obtained into aqueous ultrafine fiber by dye, oil, grind skin, veneer according to the method for document report to close Finished leather, can be used for luggage leather, sofa.
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd. The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO 17235-2002.Survey Test result and feel are as follows：
Polyurethane component micropore size D50：20.5 microns, pliability：5.4, feel：It is soft and kishke feel is strong.Electronic Speculum is shone Piece is shown in Fig. 3.
Embodiment 4
The preparation of aqueous impregnating resin：
Table 4
Raw material in table 4 is well mixed, prepared viscosity is for about the aqueous impregnating resin of 25 DEG C of 4500mPa.S.
The preparation of primary base fabric：
Fabric of island-in-sea type non-woven fabrics be impregnated in into aqueous impregnating resin, liquid holdup 90% is controlled, is wiped off surface resin with scraper, Then dried in 120 DEG C of baking ovens, dipping base fabric is obtained；Will be during dipping base fabric puts into decrement operation, with 85 DEG C of toluene decrements 2 Hour, and the base fabric that decrement is completed is dried on 110~130 DEG C of expanding drying equipments, primary base fabric is obtained.
Primary base fabric is obtained into aqueous ultrafine fiber by dye, oil, grind skin, veneer according to the method for document report to close Finished leather, can be used for women's shoes etc..
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd. The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO 17235-2002.Survey Test result and feel are as follows：
Polyurethane component micropore size D50：15.9 microns, pliability：3.7, feel：Soft and plentiful, skin sense is strong, sense of touch It is good, with a good drape effect.Electromicroscopic photograph is shown in Fig. 4.
Comparative example 1
Aqueous impregnating resin in embodiment 4 is added without polypropylene microparticle, and ensures consolidating for polyurethane in impregnating resin Content is constant, therefore aqueous impregnating resin proportioning is：100% modulus is 5.0MPa, the aqueous polyurethane emulsion that solid content is 40% 100 parts, 130 parts of deionized water, 0.3 part of wetting agent, 1.0 parts of thickener.Remaining technique is constant, and the synthesis of aqueous ultrafine fiber is obtained Leather.
PHENOM desk-top ESEMs and its hole statistical analysis system using Fu Na scientific instrument (Shanghai) Co., Ltd. The micropore size D50 of system analysis polyurethane resin component.The pliability of leather is detected using standard ISO 17235-2002.Survey Test result and feel are as follows：
Polyurethane component micropore size D50：Pore-free, pliability：2.1, feel：Modeling sense is strong, Boardy Feeling, poor flexibility.Electricity Mirror photo is shown in Fig. 5.
Knowable to various embodiments above and comparative example, aqueous impregnating resin of the invention and aqueous polyurethane woven fabric are fine The preparation method for tieing up synthetic leather obtains fine and closely woven microcellular structure, realizes the plentiful, soft, true of aqueous ultrafine fiber synthetic leather The characteristics of skin sense is strong.

Claims (10)

1. the preparation method of the primary base fabric of aqueous polyurethane superfine fiber synthetic leather, it is characterised in that comprise the following steps：
(1) in fabric of island-in-sea type non-woven fabrics impregnated in into the aqueous impregnating resin containing polymer particles, fabric of island-in-sea type nonwoven is then struck off The resin on cloth surface, obtains dipping base fabric；
Described polymer particles are one or more of polyolefin fine particle or ps particle；
(2) decrement is carried out in above-mentioned dipping base fabric being put into toluene, primary base fabric is obtained.
2. method according to claim 1, it is characterised in that (1) impregnated in fabric of island-in-sea type non-woven fabrics micro- containing polymer In the aqueous impregnating resin of grain, then control liquid holdup strikes off the resin of fabric of island-in-sea type nonwoven surface 80~100%, 90~ 130 DEG C of drying.
3. method according to claim 1, it is characterised in that in step (2), will above-mentioned dipping base fabric put into toluene in enter Row decrement, toluene temperature is 75~90 DEG C, and the time is 1~3 hour, and the base fabric after decrement is dried at 110~130 DEG C, is obtained Primary base fabric.
4. the method according to any one of claims 1 to 3, it is characterised in that described contains the aqueous of polymer particles Impregnating resin, is made up of the component of following weight portion：
5. method according to claim 4, it is characterised in that described polyolefin is selected from polyethylene or polypropylene.
6. method according to claim 5, it is characterised in that the D50 of the particulate is 5~25 microns.
7. method according to claim 6, it is characterised in that the viscosity of property impregnating resin is 3000~6000mPaS@ 25℃。
8. method according to claim 4, it is characterised in that the solid weight part of described aqueous polyurethane emulsion is 25 ~55%, 100% modulus is 1.0~10.0Mpa.
9. method according to claim 4, it is characterised in that described wetting agent is polyether modified silicon oil, described increasing Thick dose is aqueous polyurethane type thickener or polyacrylic acid aqueous solution type thickener.
10. the primary base fabric of aqueous polyurethane superfine fiber synthetic leather for being prepared according to any one of claim 1~9 methods described.
CN201611150092.7A 2016-12-14 2016-12-14 Primary base fabric of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof Active CN106702760B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109972399A (en) * 2019-03-08 2019-07-05 上海华峰超纤材料股份有限公司 Skin-imitated superfine fiber synthetic leather and its preparation method and application
CN110607694A (en) * 2019-09-25 2019-12-24 晋江全亿无纺布有限责任公司 Water-based microfiber non-woven fabric capable of replacing genuine leather
CN111032954A (en) * 2017-09-22 2020-04-17 株式会社可乐丽 Artificial leather with vertical bristles
CN112553915A (en) * 2020-11-12 2021-03-26 浙江吉利控股集团有限公司 Preparation method of microfiber leather and microfiber leather

Citations (5)

* Cited by examiner, † Cited by third party
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