CN108314768A - A kind of monocomponent polyurethane, a kind of microfiber leather and preparation method thereof - Google Patents

A kind of monocomponent polyurethane, a kind of microfiber leather and preparation method thereof Download PDF

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Publication number
CN108314768A
CN108314768A CN201810053428.0A CN201810053428A CN108314768A CN 108314768 A CN108314768 A CN 108314768A CN 201810053428 A CN201810053428 A CN 201810053428A CN 108314768 A CN108314768 A CN 108314768A
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CN
China
Prior art keywords
microfiber leather
monocomponent polyurethane
raw
finished
slurry
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CN201810053428.0A
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Chinese (zh)
Inventor
兰兴仲
孙启龙
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东莞市高示新材料有限公司
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Priority to CN201810053428.0A priority Critical patent/CN108314768A/en
Publication of CN108314768A publication Critical patent/CN108314768A/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/4009Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4018Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/4009Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4081Mixtures of compounds of group C08G18/64 with other macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/44Polycarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/64Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6461Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63 having phosphorus
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/06Polyurethanes from polyesters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/08Polyurethanes from polyethers
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0004Artificial 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)
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0043Artificial 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
    • D06N3/0045Artificial 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 obtained by applying a ready-made foam layer; obtained by compressing, crinkling or crushing a foam layer, e.g. Kaschierverfahren für Schaumschicht
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial 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
    • D06N3/0059Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086Artificial 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
    • D06N3/0088Artificial 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 by directly applying the resin
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial 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
    • D06N3/14Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2211/00Specially adapted uses
    • D06N2211/12Decorative or sun protection articles
    • D06N2211/28Artificial leather

Abstract

The invention discloses a kind of monocomponent polyurethane, a kind of microfiber leather and preparation method thereof, the raw material of monocomponent polyurethane includes:Polyalcohol, isocyanates and sealer;The ingredient of monocomponent polyurethane is simple, and when use does not generate harmful substance;The raw material of microfiber leather includes following component by weight:80 120 parts of monocomponent polyurethane;1 30 parts of amine curing agent;0.5 2 parts of antifoaming agent;0.5 2 parts of levelling agent;Preparation method includes:Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent and levelling agent are mixed, slurry is obtained;Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, and drying obtains semi-finished product;Fibrillation step:Semi-finished product are handled with caustic reduction processing, then clean and dry to obtain microfiber leather;Solvent-free system of the microfiber leather using monocomponent polyurethane as one of raw material, feed stock conversion is high, does not generate the wasting of resources.

Description

A kind of monocomponent polyurethane, a kind of microfiber leather and preparation method thereof
Technical field
The present invention relates to a kind of monocomponent polyurethanes, a kind of microfiber leather and preparation method thereof, belong to synthetic leather and its original Expect technical field.
Background technology
Microfiber leather full name is " superfine fibre enhances PU leathers ", and woven fabric PU synthetic leather represents artificial leather developing direction.By In with the most like performance of natural leather, having an extremely excellent wear-resisting property, excellent cold-resistant, ventilative, ageing-resistant performance, So being praised highly and being favored by domestic and international famous leatherware designer.But current microfiber leather product is a large amount of in the fabrication process Using dimethylformamide (DMF), although synthetic leather factory uses various devices to recycle, the rate of recovery still cannot reach 100%, the loss one of solvent is the waste of resource, on the other hand will also result in the pollution of environment and the health of working site Problem.Therefore, aqueous and solvent-free leather is current developing direction, and current solvent-free system is all two-component system, to mixed It closes, coating apparatus requirement height, technique, operating environment require strictly, thus affect the efficiency of preparation.
Invention content
For overcome the deficiencies in the prior art, of the invention first is designed to provide a kind of monocomponent polyurethane, Ingredient is simple, and when use does not generate harmful substance.
Second object of the present invention is to provide a kind of microfiber leather, using monocomponent polyurethane as one of raw material, nothing Solvent need to be added, feed stock conversion is high, does not generate the wasting of resources.
Third object of the present invention is to provide the preparation method of above-mentioned microfiber leather.
Realize that first purpose of the present invention can reach by adopting the following technical scheme that:A kind of monocomponent polyurethane Raw material includes following component:Polyalcohol, isocyanates and sealer.
Further, raw material includes following component by weight percentage:
Polyalcohol 60-90%;
Isocyanates 5-30%;
Sealer 3-20%;
The weight percent summation of each ingredient is 100%.
Further, the polyalcohol is that polyether polyol, polyester polyol, polycarbonate polyol and polyphosphate are more The copolymerization system of one or both of first alcohol.
Further, the isocyanates be toluene di-isocyanate(TDI) (TDI), methyl diphenylene diisocyanate (MDI), Hydrogenate methylenebis phenyl isocyanate (HMDI), hexa-methylene -1,6- diisocyanate (HDI) and isophorone diisocyanate One or both of (IPDI) copolymerization system.
Further, the sealer is epsilon-caprolactams, cyclopentanone -2- carboxyl esters, diisopropylamine, diethylamine, first Phentermine, imidazoles, diethyl malonate, methyl ethyl ketoxime, phenol, isononyl phenol, dimethyl pyrazole or pyrazoles.
Monocomponent polyurethane is prepared by routine techniques.
Realize that second object of the present invention can reach by adopting the following technical scheme that:A kind of raw material of microfiber leather Including following component by weight:
Further, the amine curing agent be triethylene diamine, ethylenediamine, 1,3- propane diamine, Putriscine, 1, 5- pentanediamines, 1,6- hexamethylene diamines, 1,8- octamethylenediamines, Isosorbide-5-Nitrae-cyclohexyl diamine, isophorone diamine, diphenyl methane two Amine, polyetheramine, Clea rlink 1000, Clearlink 1080, Unilink4100, Unilink4200 and BASF EC331 One or two.
Clearlink 1000 is produced by Dorf Ketal chemicals (India) private company, is two secondary amine of aliphatic.
Clearlink 1080 is produced by Dorf Ketal chemicals (India) private company, is aliphatic diamine.
Unilink4100 is produced by Dorf Ketal chemicals (India) private company, and chemical name is the bis- Zhong Ding of Isosorbide-5-Nitrae- Amido benzene.
Unilink4200 is produced by Dorf Ketal chemicals (India) private company, is 4,4 '-bis- sec-butylamine base hexichol Methylmethane.
BASF EC331 is produced by BASF SE companies, is aliphatic cyclic amine.
Further, the raw material of the microfiber leather further includes 0.1-10 parts of foaming agent.
Further, the foaming agent is AC foaming agents (azodicarbonamide) or OBSH foaming agents (4,4- disulfonyl hydrazides Diphenyl ether).
Realize that third object of the present invention can reach by adopting the following technical scheme that:A kind of preparation of microfiber leather Method, including:
Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent and levelling agent are uniformly mixed, starched Material;
Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, is then 90-160 in temperature 3-6min is dried under conditions of DEG C, obtains semi-finished product;
Fibrillation step:Semi-finished product are handled with caustic reduction processing, then cleans, dry, obtain microfiber leather.
The formulation Design Principle of the present invention is as follows:
In monocomponent polyurethane formula of the present invention, using blocking agent isocyanates;When preparing microfiber leather slurry, with Amine curing agent quickly unseals isocyanates and is reacted, and is mixed to form one-component system.
Compared with prior art, the beneficial effects of the present invention are:
1, monocomponent polyurethane of the present invention is one-component blocked polyurethane, and solvent-free system, ingredient is simple, when use The discharge and pollution for not generating organic solvent, also without the residual of poisonous and harmful organic solvent;
2, the raw material of microfiber leather of the invention is the solvent-free system using monocomponent polyurethane as one of raw material, is compared In double component solvent-free system, there is easy to operate, waste less, the dry process production line of existing synthetic leather can be used, do not needed The two-component coating system of additional investment costliness, feed stock conversion is high, does not generate the wasting of resources.
Specific implementation mode
In the following, in conjunction with specific implementation mode, the present invention is described further:
Embodiment 1:
The raw material of monocomponent polyurethane includes following component by weight percentage:
Polyether polyol 75%;
TDI 20%;
Diethyl malonate 5%.
Embodiment 2:
The raw material of monocomponent polyurethane includes following component by weight percentage:
Embodiment 3:
The raw material of monocomponent polyurethane includes following component by weight percentage:
Embodiment 4:
The raw material of monocomponent polyurethane includes following component by weight percentage:
Embodiment 4 matches the blocked polyurethane that non yellowing can be made, the preparation for high-grade light color leather.
The monocomponent polyurethane of embodiment 1-4 is prepared by routine techniques.
Embodiment 5
A kind of raw material of microfiber leather includes following component by weight:
The preparation method of microfiber leather, including:
Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent and levelling agent are mixed and are uniformly dispersed, Obtain slurry;
Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, and thickness is 15, then in temperature Degree dries 2min under conditions of being 130 DEG C, obtains semi-finished product;
Fibrillation step:Semi-finished product are immersed in 30min in 85-90 DEG C of 2wt%NaOH solution, is cleaned, is then dried, obtain Microfiber leather.
Microfiber leather folding can be tested by -30 DEG C, 40,000 times.
Embodiment 6
A kind of raw material of microfiber leather includes following component by weight:
The preparation method of microfiber leather, including:
Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent and levelling agent are mixed and are uniformly dispersed, Obtain slurry;
Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, and thickness is 20, then in temperature Degree dries 1min under conditions of being 100 DEG C, dries 2min under the conditions of 160 DEG C, obtains semi-finished product;
Fibrillation step:Semi-finished product are immersed in 30min in 85-90 DEG C of 2wt%NaOH solution, is cleaned, is then dried, obtain Microfiber leather.
The microfiber leather is placed 7 days under 75 DEG C, 95% relative humidity, is done leather and is deflected test, property retention rate> 95%.
Embodiment 7
A kind of raw material of microfiber leather includes following component by weight:
The preparation method of microfiber leather, including:
Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent, levelling agent and foaming agent are mixed and divided It dissipates uniformly, obtains slurry;
Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, and thickness is 20, then in temperature Degree dries 1min under conditions of being 90 DEG C, and 1min is dried under the conditions of 110 DEG C, 2min is dried under the conditions of 160 DEG C, obtains semi-finished product;
Fibrillation step:Semi-finished product are immersed in 30min in 85-90 DEG C of 2wt%NaOH solution, is cleaned, is then dried, obtain Microfiber leather.
The microfiber leather flame retardant rating can pass through M1 (examination criteria 23727-90R1).
Embodiment 8
A kind of raw material of microfiber leather includes following component by weight:
The preparation method of microfiber leather, including:
Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent and levelling agent are mixed and are uniformly dispersed, Obtain slurry;
Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, and thickness is 15, then in temperature Degree dries 1min under conditions of being 100 DEG C, dries 2min under the conditions of 160 DEG C, obtains semi-finished product;
Fibrillation step:Semi-finished product are immersed in 30min in 85-90 DEG C of 2wt%NaOH solution, is cleaned, is then dried, obtain Microfiber leather.
UV lamp case aging 4 hour of the microfiber leather at 30 watts, the resistance to yellow grade of leather, which becomes, is more than 4.5 grades.
For those skilled in the art, technical solution that can be as described above and design are made other each Kind is corresponding to be changed and deforms, and all these change and deform the protection model that should all belong to the claims in the present invention Within enclosing.

Claims (10)

1. a kind of monocomponent polyurethane, which is characterized in that the raw material of monocomponent polyurethane includes following component:Polyalcohol, isocyanide Acid esters and sealer.
2. monocomponent polyurethane as described in claim 1, which is characterized in that raw material include by weight percentage it is following at Point:
Polyalcohol 60-90%;
Isocyanates 5-30%;
Sealer 3-20%;
The weight percent summation of each ingredient is 100%.
3. monocomponent polyurethane as described in claim 1, which is characterized in that the polyalcohol is polyether polyol, polyester is more The copolymerization system of one or both of first alcohol, polycarbonate polyol and polyphosphate polyalcohol.
4. monocomponent polyurethane as described in claim 1, which is characterized in that the isocyanates be toluene di-isocyanate(TDI), Methyl diphenylene diisocyanate, hydrogenation methylenebis phenyl isocyanate, hexa-methylene -1,6- diisocyanate and isophorone The copolymerization system of one or both of diisocyanate.
5. monocomponent polyurethane as described in claim 1, which is characterized in that the sealer is epsilon-caprolactams, cyclopentanone- 2- carboxyl esters, diisopropylamine, diethylamine, mephentermine, imidazoles, diethyl malonate, methyl ethyl ketoxime, phenol, isononyl Phenol, dimethyl pyrazole or pyrazoles.
6. a kind of microfiber leather, which is characterized in that the raw material of microfiber leather includes following component by weight:
7. microfiber leather as claimed in claim 6, which is characterized in that the amine curing agent be triethylene diamine, ethylenediamine, 1,3- propane diamine, Putriscine, 1,5- pentanediamines, 1,6- hexamethylene diamines, 1,8- octamethylenediamines, Isosorbide-5-Nitrae-cyclohexyl diamine, Isophorone diamine, diphenylmethanediamiand, polyetheramine, Clearlink 1000, Clearlink 1080, Unilink4100, The one or two of Unilink4200 and BASF EC331.
8. microfiber leather as claimed in claim 6, which is characterized in that the raw material of the microfiber leather further includes foaming agent 0.1- 10 parts.
9. microfiber leather as claimed in claim 8, which is characterized in that the foaming agent is AC foaming agents or OBSH foaming agents.
10. a kind of preparation method of microfiber leather, it is characterised in that including:
Slurry preparation step:Monocomponent polyurethane, amine curing agent, antifoaming agent and levelling agent are uniformly mixed, slurry is obtained;
Semi-finished product prefabrication step:Dry method doctor blade process scratches slurry in woven fabric base fabric, is then 90-160 DEG C in temperature Under the conditions of dry 3-6min, obtain semi-finished product;
Fibrillation step:Semi-finished product are handled with caustic reduction processing, then cleans, dry, obtain microfiber leather.
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