CN106702760B - Primary base fabric of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof - Google Patents

Primary base fabric of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof Download PDF

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Publication number
CN106702760B
CN106702760B CN201611150092.7A CN201611150092A CN106702760B CN 106702760 B CN106702760 B CN 106702760B CN 201611150092 A CN201611150092 A CN 201611150092A CN 106702760 B CN106702760 B CN 106702760B
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base fabric
fabric
aqueous
primary base
island
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CN106702760A (en
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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

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention discloses primary base fabrics of a kind of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof, preparation method, include the following steps: that fabric of island-in-sea type non-woven fabrics is impregnated in the aqueous impregnating resin containing polymer particles by (1), then the resin for striking off fabric of island-in-sea type nonwoven surface obtains dipping base fabric；The polymer particles are one or more of polyolefin fine particle or ps particle；(2) above-mentioned dipping base fabric is put into toluene and is reduced, obtain primary base fabric.The present invention is not under conditions of increasing process, by changing the sizes of polymer particles and how much adjusting the size of foam structure and how many, to realize the diversification of product, the polymer that decrement comes out can the recycling and reusing together with marine facies, using aqueous polyurethane superfine fiber synthetic leather prepared by prepared base fabric, possess more fine and closely woven foam 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 methods for being used to prepare the primary base fabric of polyurethane ultrafine fiber synthetic leather.
Background technique
Superfine fiber chemical leather is the composite material being made of superfine fibre and polyurethane, has structure simulation, breathes freely The features such as property, flexibility, it is one of ideal alternative materials of corium, is widely used in the fields such as sofa, automobile, luggage, shoemaking. Currently, most of domestic superfine fiber chemical leather is all that toluene decrement process is prepared, exemplary steps are as follows: 1) passing through sea The DMF solution of island non-woven fabrics impregnating polyurethane, and in DMF-H2Solidification forms microporous polyurethane in O solution；2) pass through hot first Benzene extracts the marine facies in fiber out；3) superfine fiber synthetic leather base cloth is made by the treatment process such as drying, oiling, dyeing；4) lead to It crosses the techniques such as veneer or mill skin and resultant Leather is made.The advantages of technique, is that the polyurethane component in superfine fiber chemical leather possesses A large amount of microcellular structure, manufactured synthetic leather good hand feeling, softness, kishke feel are strong；Disadvantage has largely used molten during being Agent DMF causes certain pollution to environment, and needs to consume a large amount of energy when recycling DMF.
Aqueous polyurethane superfine fiber synthetic leather during the preparation process, by the way that solvent borne polyurethane maceration extract is replaced with water Property polyurethane impregnated liquid, reduce solvent in production process and use.But when fabric of island-in-sea type non-woven fabrics impregnates waterborne polyurethane resin How to generate microcellular structure always and annoyings the development of aqueous ultrafine fiber synthetic leather.Domestic pharmaceutical industry proposed certain methods, such as Mechanical foaming, salt bath cohesion, acid bath cohesion, chemical blowing etc..But mechanical foaming can be filtered out part gas by fabric of island-in-sea type non-woven fabrics Bubble and be difficult to control, salt bath and acid bath agglomerate the brittleness that will increase leather and cause flexibility inadequate, chemical blowing there is presently no Foaming agent suitable for aqueous polyurethane system.
Summary of the invention
The purpose of the present invention is to provide primary base fabric of a kind of aqueous polyurethane superfine fiber synthetic leather and preparation method thereof, To overcome defect of the existing technology.
The preparation method of the primary base fabric of the aqueous polyurethane superfine fiber synthetic leather, includes the following steps:
(1) fabric of island-in-sea type non-woven fabrics is impregnated in the aqueous impregnating resin containing polymer particles, controls liquid holdup 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；
The polymer particles are one or more of polyolefin fine particle or ps particle；
(2) above-mentioned dipping base fabric is put into toluene and is reduced, toluene temperature is 75~90 DEG C, and the time is 1~3 small When, the base fabric after decrement is dry at 110~130 DEG C, obtain primary base fabric；
The primary base fabric is post-processed by conventional method, it is ultra-fine to can be obtained the aqueous polyurethane Fiber synthetic leather；
The method of the post-processing be it is conventional, those skilled in the art can be according to document (such as document: Qu Jian Wave synthetic leather technology [M] Chemical Industry Press, 2010.) method of report carries out the dyeing of primary base fabric, oils, grinds The process such as skin, napping obtain aqueous ultrafine fiber polyurethane synthetic leather base fabric, which can be used for shoes leather, sofa artificial leather, hand 100% modulus of difference and solid weight may be selected according to the difference of target product in the production for covering leather, luggage leather, interior leather for automobiles etc. Polymer particles of the aqueous polyurethane emulsion of part, different weight part and size etc. are measured to realize.
Preferably, the aqueous impregnating resin containing polymer particles, is grouped as by the group of following parts by weight:
The polyolefin choosing can be selected from polyethylene, polypropylene, and the D50 of particle is 5~25 microns, the polystyrene Particle D50 is 5~25 microns；
Commercial product can be used in the polyolefin fine particle, such as: Nanjing day poem new material science and technology can be used in Polyethylene Particles Co., Ltd's trade mark is the product etc. of PEW-0200, PEW-0301, and Nanjing day poem new material science and technology, which can be used, in polypropylene microparticle has The limit company trade mark is the product etc. of PPW-0901；
Alternatively, it is 5~25 microns that polyethylene, polypropylene or polystyrene ball milling powder, which are broken to D50,；
It mixes the above components evenly, obtains the aqueous impregnating resin of 25 DEG C of 3000~6000mPa.S of viscosity@；
Solid weight part of the aqueous polyurethane emulsion is 25~55%, is preferably 40~50%；
100% modulus of the aqueous polyurethane emulsion is 1.0~10.0Mpa, is preferably 3.0~8.0MPa；
The wetting agent is polyether modified silicon oil, and commercial product such as XIAMETEROFX-5211FLUID etc. can be used.
The thickener is aqueous polyurethane type thickener or polyacrylic acid aqueous solution type thickener, and commercially available production can be used Product are such asGel 0625、Gel ALA etc..
Technical principle of the invention is:
The process characteristic being reduced using toluene, is added polymer particles when preparing aqueous impregnating resin thereto, and While toluene subtracts sea-island fibre marine facies formation superfine fibre, polymer particles are subtracted to form microporous polyurethane, are simulated The foam structure of polyurethane component, realizes the plentiful, soft of aqueous ultrafine fiber synthetic leather in conventional superfine fiber chemical leather Feature soft, kishke feel is strong.
Compared with prior art, the beneficial effects of the present invention are:
The process characteristic being reduced using toluene, under conditions of not increasing process, by the size for changing polymer particles With how much adjust the size of foam structure and how many, to realize the diversification of product, the polymer particles for being reduced out can The recycling and reusing together with marine facies, using aqueous polyurethane superfine fiber synthetic leather prepared by prepared base fabric, possess compared with For fine and closely woven foam structure.
Detailed description of the invention
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
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair It is bright, rather than limit the scope of protection of the present invention.The improvement and tune that technical staff makes according to the present invention in practical applications It is whole, still fall within protection scope of the present invention.Raw materials used following embodiment is commercially available or self-control.
Embodiment 1
The preparation step 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 uniformly mixed, the aqueous impregnating resin that obtained viscosity is 25 DEG C of about 3000mPa.S.
The preparation of primary base fabric:
Fabric of island-in-sea type non-woven fabrics is impregnated in the aqueous impregnating resin, liquid holdup 100% is controlled, is scraped surface resin with scraper Fall, then dried in 90 DEG C of baking ovens, dipping base fabric is made；Dipping base fabric is put into decrement process, is subtracted with 75 DEG C of toluene 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 made.
Primary base fabric be can be obtained into the water by dyeing, oiling, grind skin, veneer according to method reported in the literature Property polyurethane ultrafine fiber synthetic leather, can be used for shoemaking.
System is statisticallyd analyze using the PHENOM desk-top ESEM and its hole of 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.It surveys Test result and feel are as follows:
D50:5.1 microns of polyurethane component micropore size, pliability: 2.8, feel: 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 uniformly mixed, the aqueous impregnating resin that obtained viscosity is 25 DEG C of about 6000mPa.S.
The preparation of primary base fabric:
Fabric of island-in-sea type non-woven fabrics is impregnated in the aqueous impregnating resin, liquid holdup 80% is controlled, is scraped surface resin with scraper Fall, then dried in 130 DEG C of baking ovens, dipping base fabric is made；Dipping base fabric is put into decrement process, is subtracted with 90 DEG C of toluene 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 made；
Primary base fabric is closed according to method reported in the literature by dyeing, napping, the obtained flannelette aqueous ultrafine fiber that oils Finished leather can be used for clothes, gloves, decoration etc..
System is statisticallyd analyze using the PHENOM desk-top ESEM and its hole of 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.It surveys Test result and feel are as follows:
D50:24.3 microns of polyurethane component micropore size, 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 step 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 uniformly mixed, the aqueous impregnating resin that obtained viscosity is 25 DEG C of about 5500mPa.S.
The preparation of primary base fabric:
Fabric of island-in-sea type non-woven fabrics is impregnated in the aqueous impregnating resin, liquid holdup 90% is controlled, is scraped surface resin with scraper Fall, then dried in 120 DEG C of baking ovens, dipping base fabric is made；Dipping base fabric is put into decrement process, is subtracted with 80 DEG C of toluene 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 made.
Primary base fabric is closed according to method reported in the literature by dyeing, oiling, grinding the obtained aqueous ultrafine fiber of skin, veneer Finished leather can be used for luggage leather, sofa.
System is statisticallyd analyze using the PHENOM desk-top ESEM and its hole of 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.It surveys Test result and feel are as follows:
D50:20.5 microns of polyurethane component micropore size, pliability: 5.4, feel: 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 uniformly mixed, the aqueous impregnating resin that obtained viscosity is 25 DEG C of about 4500mPa.S.
The preparation of primary base fabric:
Fabric of island-in-sea type non-woven fabrics is impregnated in aqueous impregnating resin, liquid holdup 90% is controlled, is wiped off surface resin with scraper, Then it is dried in 120 DEG C of baking ovens, dipping base fabric is made；Dipping base fabric is put into decrement process, 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 made.
Primary base fabric is closed according to method reported in the literature by dyeing, oiling, grinding the obtained aqueous ultrafine fiber of skin, veneer Finished leather can be used for women's shoes etc..
System is statisticallyd analyze using the PHENOM desk-top ESEM and its hole of 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.It surveys Test result and feel are as follows:
D50:15.9 microns of polyurethane component micropore size, 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 guarantees consolidating for polyurethane in impregnating resin Content is constant, therefore aqueous impregnating resin matches are as follows: the aqueous polyurethane emulsion that 100% modulus is 5.0MPa, 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 made Leather.
System is statisticallyd analyze using the PHENOM desk-top ESEM and its hole of 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.It surveys Test result and feel are as follows:
Polyurethane component micropore size D50: pore-free, pliability: 2.1, feel: strong, Boardy Feeling, poor flexibility are felt in modeling.Electricity Mirror photo is shown in Fig. 5.
From the above various embodiments and comparative example it is found that aqueous impregnating resin and aqueous polyurethane woven fabric of the invention is fine The preparation method of dimension synthetic leather obtains fine and closely woven microcellular structure, realizes the plentiful, soft, true of aqueous ultrafine fiber synthetic leather The strong feature of skin sense.

Claims (8)

1. the preparation method of the primary base fabric of aqueous polyurethane superfine fiber synthetic leather, which comprises the steps of:
(1) fabric of island-in-sea type non-woven fabrics is impregnated in the aqueous impregnating resin containing polymer particles, then strikes off fabric of island-in-sea type nonwoven The resin on cloth surface obtains dipping base fabric；
The polymer particles are one or more of polyethylene, polypropylene or ps particle；
The aqueous impregnating resin containing polymer particles, is grouped as by the group of following parts by weight:
(2) above-mentioned dipping base fabric is put into toluene and is reduced, obtain primary base fabric.
2. the method according to claim 1, wherein (1) fabric of island-in-sea type non-woven fabrics is impregnated in it is micro- containing polymer In the aqueous impregnating resin of grain, liquid holdup is controlled 80~100%, then strikes off the resin of fabric of island-in-sea type nonwoven surface, 90~ 130 DEG C of drying.
3. the method according to claim 1, wherein in step (2), by above-mentioned dipping base fabric put into toluene into Row decrement, toluene temperature are 75~90 DEG C, and the time is 1~3 hour, and the base fabric after decrement is dry at 110~130 DEG C, are obtained Primary base fabric.
4. the method according to claim 1, wherein the D50 of the particle is 5~25 microns.
5. according to the method described in claim 4, it is characterized in that, the viscosity of aqueous impregnating resin is 3000~6000mPa.S@ 25℃。
6. the method according to claim 1, wherein solid weight part of the aqueous polyurethane emulsion is 25 ~55%, 100% modulus is 1.0~10.0Mpa.
7. the method according to claim 1, wherein the wetting agent is polyether modified silicon oil, the increasing Thick dose is aqueous polyurethane type thickener or polyacrylic acid aqueous solution type thickener.
8. the primary base fabric of aqueous polyurethane superfine fiber synthetic leather of any one the method preparation according to claim 1~7.
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Publication number Priority date Publication date Assignee Title
CN111032954A (en) * 2017-09-22 2020-04-17 株式会社可乐丽 Artificial leather with vertical bristles
CN109972399B (en) * 2019-03-08 2021-11-12 上海华峰超纤科技股份有限公司 Leather-imitated superfine fiber synthetic leather and preparation method and application thereof
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
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

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Publication number Priority date Publication date Assignee Title
JPH02191778A (en) * 1989-01-20 1990-07-27 Achilles Corp Production of synthetic leather
JPH0693571A (en) * 1991-09-26 1994-04-05 Hosokawa Micron Corp Production of synthetic leather
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CN104005237A (en) * 2013-11-27 2014-08-27 四川大学 Water-dilutable resin-based impregnation method for ultrafine fiber synthetic leather base fabrics
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