CN107385940B - A kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather and preparation method thereof - Google Patents

A kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather and preparation method thereof Download PDF

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CN107385940B
CN107385940B CN201710726321.3A CN201710726321A CN107385940B CN 107385940 B CN107385940 B CN 107385940B CN 201710726321 A CN201710726321 A CN 201710726321A CN 107385940 B CN107385940 B CN 107385940B
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polyurethane
layer
solvent
bloom
lacquer painting
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CN107385940A (en
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迟红梅
张玉萍
陈永志
阮仁祥
阚道俊
胡国金
朱福俭
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Anhui Anli Material Technology Co Ltd
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Anhui Anli Material 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
    • D06N3/145—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 two or more layers of polyurethanes
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    • 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
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
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    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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    • D06N3/0065—Organic pigments, e.g. dyes, brighteners
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    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial 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
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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    • 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
    • D06N3/0095—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 by inversion technique; by transfer processes
    • D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
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    • 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
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    • 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
    • D06N3/147—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 isocyanates used
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    • D06N2209/00—Properties of the materials
    • D06N2209/08—Properties of the materials having optical properties
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  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The present invention discloses a kind of solvent-free woven fabric bloom lacquer painting Synthetic Leather, is successively made of from top to bottom surface layer layer of polyurethane, intermediate urethane layer, polyether-type no-solvent polyurethane layer, four layers of woven fabric Synthetic Leather；It is coated with one layer of surface layer polyurethane slurry on bloom mirror film, one layer of middle layer polyurethane slurry is coated with after drying, a strata ether type no-solvent polyurethane slurry is coated with after drying, is bonded after pre-reaction with tentering woven fabric Synthetic Leather；Through curing, common clot, again after curing, by bloom mirror surface film stripping finished product.Solvent-free woven fabric bloom lacquer painting Synthetic Leather prepared by the present invention has the excellent performances such as high gloss, high-flatness, no wrinkle, sense of touch is smooth, notch can match in excellence or beauty with corium, hydrolysis, wear-resisting, resistance to room temperature are deflected, resisted cold, high-efficiency environment friendly, can be widely applied in medium-to-high grade footwear material, luggage and ornament materials.

Description

A kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather and preparation method thereof
Technical field
The present invention relates to the technical fields of Synthetic Leather, and in particular to a kind of solvent-free bloom lacquer painting superfine fibre is poly- Urethane synthetic leather and preparation method thereof.
Background technique
Superfine fiber chemical leather is the composite material of superfine fibre and polyurethane.Superfine fibre has approximate collagenous fibres Fiber number and structure, therefore all have characteristic similar with natural leather in terms of configuration of surface and mechanical property.With ultra-fine fibre Peacekeeping polyurethane is combined super fiber leather, there is appearance and performance similar to natural leather, is the conjunction at present closest to corium At leather.
The glossiness of natural leather surfaces can be divided into bloom, light, semi-gloss, semi-dull, delustring.Wherein, coat of paint is surface With high gloss and firm leather, any surface finish are such as painted, are penetrating beautiful, have strong surface effect and style and features. The swanks such as the coat of paint skin bottom leather shoes that various bright coat of paints and imitative coat of paint can be made into close-fitting fashionable dress, fit fine.It is super Fiber synthetic leather has the reticular fiber structure of biggish specific surface area and 3 D stereo, but its poor flatness, loose side and fold are thick Greatly, quality can not show a candle to coat of paint, and manufacture when so as to cause the woven fabric mirror surface product bright for plain weave effect especially gloss is difficult Degree is big.
Chinese patent CN105774164A discloses a kind of preparation method of super flat mirror face woven fabric of imitative coat of paint, but this method is adopted With dry method making technology twice, the various complexity of production process, energy consumption is big, and production efficiency is low.Chinese patent CN102535187B is public A kind of preparation method of no folding line woven fabric mirror face synthetic leather is opened, this method carries out dry method work after using woven fabric and TPU compound again Skill preparation, this method process operations difficulty is big, Boardy Feeling, the residue problem that not can solve DMF in product.
Summary of the invention
In order to make up the above deficiency, the present invention is prepared for a kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather material Material with excellent properties such as degree of cross linking height, low, the cold-resistant and hydrolysis of elongation rate of tensile failure, while also can avoid organic solvent and wave Hair and residual.Solve the problems, such as that poor flatness, loose side, fold are coarse when super-fiber base material makes mirror surface product, simplify simultaneously The production procedure of product solves DMF residue problem present in product.
In order to reach the goals above, the present invention adopts the following technical scheme:
A kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather, be successively from top to bottom by surface layer layer of polyurethane, Intermediate urethane layer, polyether-type no-solvent polyurethane layer, woven fabric Synthetic Leather four-layer structure composition；The polyether-type without Solvent polyurethane layer is made of by weight following components:
Further, the surface layer layer of polyurethane is made of by weight following components:
The intermediate urethane layer is made of by weight following components:
Further, dihydric alcohol of the polytetrahydrofuran dihydric alcohol average molecular weight in 1000-3000g/mol；
The chain extender is at least one of ethylene glycol, propylene glycol, 1,4-butanediol；
The partial size of the filler is greater than 800 mesh, filler CaCO3、AL(OH)3At least one of；
The catalyst is organometallic catalysts；The organometallic catalysts are BICAT8106, BICAT 3228, at least one of BICAT 4232；
The Isocyanate prepolymers body be 25 DEG C at viscosity 1500-2500cps isocyanate-terminated polyurethane Resin prepolymer.
Further, 100% modulus of the polycaprolactone polyethers composite polyurethane resin is 90-140kg/cm2；
The solid content of the polyether polyester composite polyurethane resin is 45-55%；
The pigment is organic mill base；
The levelling agent is polyether silicones.
Wherein, 100% modulus is generic noun well known to those skilled in the art, and meaning is elongation when being 100% Tensile strength.
Preparation method described in a kind of preparation method of solvent-free bloom lacquer painting superfine fiber polyurethane leather, including it is as follows Step:
A, one layer of surface layer polyurethane slurry, drying forming face layer layer of polyurethane are coated on bloom mirror film；
B, one layer of middle layer polyurethane slurry is coated on surface layer layer of polyurethane, drying forms intermediate urethane layer；
C, a strata ether type no-solvent polyurethane slurry is coated on intermediate urethane layer, after pre-reaction formed polyether-type without Solvent polyurethane layer；Tentering woven fabric Synthetic Leather is bonded with polyether-type no-solvent polyurethane layer with pressure roller；It cures, is common Clot, again through 70 DEG C of curings for 24 hours, by bloom mirror surface film stripping, obtain the solvent-free bloom lacquer painting superfine fiber polyurethane and close Finished leather.
Further, the tentering woven fabric polyurethane is for woven fabric polyurethane through 140~160 DEG C of tenterings of tentering machine, through cooling It is made；The woven fabric Synthetic Leather with a thickness of 0.7-1.2mm, 10min shrinking percentage is less than 3% at 150 DEG C.
Further, the viscosity described in step a at 25 DEG C of surface layer polyurethane slurry is 2000~2500cps, coating thickness It is 13-16；The drying temperature is 110~130 DEG C；
Viscosity described in step b at 25 DEG C of middle layer polyurethane slurry is 5000~5500cps, coating thickness 25-30 Silk；The drying temperature is 120~140 DEG C；
Polyether-type no-solvent polyurethane slurry thickness described in step c is 40-50；The pre-reaction condition is 90~120 Pre-reaction 2-3min at DEG C；The curing cures 8-10min for 140~150 DEG C of baking ovens.
Further, the bloom mirror film be high-temperature polyester mirror film, width 1.48-1.52m, with a thickness of 0.15-0.2mm, light transmittance >=90% are resistant to 150 DEG C or more high temperature.
Compared with prior art, present invention has the advantage that
1, high-temperature polyester has been used in a kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather prepared by the present invention Mirror film, make to be made appearance characteristics glossiness is high, bright sense is strong, flatness height, no wrinkle, sense of touch are smooth, notch can be with corium It matches in excellence or beauty, this is that common mirror surface release paper is difficult to realize.
2, synthetic leather prepared by the present invention is four-layer structure, and physical mechanical property is excellent, has excellent hydrolysis, resistance to Mill, room temperature Qu Rao, cold tolerance.
3, the middle layer polyurethane slurry that the present invention is copolymerized using the surface layer and polyether polyester of polycaprolactone ester polyether copolymerization, Impart the performances such as the excellent room temperature Qu Rao of product, cold-resistant.
4, the polyether-type no-solvent polyurethane slurry that the present invention uses imparts the excellent anti-hydrolytic performance of product, high abrasion Performance, excellent room temperature song be rich and cold tolerance and environmental-protecting performance, can be satisfied with medium-to-high grade footwear material and high-intensitive environment is used The requirement of product.
5, the solvent-free process preparation that the present invention uses, and preparation method is relatively advanced with equipment, can simplify production work Sequence, and operability is stronger, not only solves super-fiber base material poor flatness when preparing mirror surface product, coarse, loose side of fold etc. Problem, while reducing the volatilization and residue problem (DMF≤50ppm) of organic solvent, it is environmentally protective to meet synthetic leather industry Development trend.It can be widely applied in medium-to-high grade footwear material, luggage and ornament materials.
Specific embodiment
Following embodiments are the further explanations for the content of present invention, using as the explaination to the technology of the present invention content, But substantive content of the invention is not limited in described in following embodiments, those skilled in the art can with and should know Any simple change or replacement based on true spirit should belong to protection scope of the presently claimed invention.
Each ingredient model in following embodiment；
Woven fabric Synthetic Leather: Shanghai Hua Feng woven fabric Materials Co., Ltd；
Polycaprolactone polyethers composite polyurethane resin: Hefei Anli New Material Polyurethane Co., Ltd. (LT-115)；
Polyether polyester is copolymerized polyurethane resin: Hefei Amway polyurethane new material company (SA-90)；
Levelling agent: Shanghai Bo Jun Industrial Co., Ltd. (levelling agent 9565)；
Isocyanate prepolymers body: Hefei Anli New Material Polyurethane Co., Ltd. (AL-1050B).
Embodiment 1
The surface layer polyurethane slurry that even spread a layer thickness is 13 on bloom mirror film, 120 DEG C of drying forming faces Layer layer of polyurethane；Even spread a layer thickness is 30 middle layer polyurethane slurries, 140 DEG C of drying shapes on surface layer layer of polyurethane At intermediate urethane layer；The polyether-type no-solvent polyurethane that even spread a layer thickness is 40 on intermediate urethane layer is starched Material, the polyether-type no-solvent polyurethane layer formed after 90 DEG C of pre-reaction 3min；At 140 DEG C of 0.7mm woven fabric Synthetic Leather It is bonded after tentering, cooling with polyether-type no-solvent polyurethane layer, 140 DEG C of curing 10min of baking oven after common clot, then are passed through 70 DEG C of curing chamber curings are for 24 hours；Bloom mirror surface film stripping is obtained into solvent-free bloom lacquer painting superfine fiber polyurethane leather finished product.
150 DEG C of heating 10min of woven fabric Synthetic Leather, shrinking percentage 2.1%；
Viscosity at 25 DEG C of surface layer polyurethane slurry is 2200cps, is made of by weight following components:
Viscosity at 25 DEG C of middle layer polyurethane slurry is 5000cps, is made of by weight following components:
Polyether-type no-solvent polyurethane slurry is made by weight of following components:
Embodiment 2
The surface layer polyurethane slurry that even spread a layer thickness is 15 on bloom mirror film, 125 DEG C of drying forming faces Layer layer of polyurethane；Even spread a layer thickness is 25 middle layer polyurethane slurries, 120 DEG C of drying shapes on surface layer layer of polyurethane At intermediate urethane layer；The polyether-type no-solvent polyurethane that even spread a layer thickness is 45 on intermediate urethane layer is starched Material, the polyether-type no-solvent polyurethane layer formed after 100 DEG C of pre-reaction 2.5min；150 DEG C of 0.9mm woven fabric Synthetic Leather It is bonded after lower tentering, cooling with polyether-type no-solvent polyurethane layer, 150 DEG C of curing 8min of baking oven after common clot, then are passed through 70 DEG C of curing chamber curings are for 24 hours；Bloom mirror surface film stripping is obtained into solvent-free bloom lacquer painting superfine fiber polyurethane leather finished product.
150 DEG C of heating 10min of woven fabric Synthetic Leather, shrinking percentage 1.5%.
Viscosity at 25 DEG C of surface layer polyurethane slurry is 2300cps, is made of by weight following components:
Viscosity at 25 DEG C of middle layer polyurethane slurry is 5500cps, is made of by weight following components:
Polyether-type no-solvent polyurethane slurry is made by weight of following components:
Embodiment 3
The surface layer polyurethane slurry that even spread a layer thickness is 16 on bloom mirror film, 130 DEG C of drying forming faces Layer layer of polyurethane；Even spread a layer thickness is 30 middle layer polyurethane slurries, 140 DEG C of drying shapes on surface layer layer of polyurethane At intermediate urethane layer；The polyether-type no-solvent polyurethane that even spread a layer thickness is 50 on intermediate urethane layer is starched Material, the polyether-type no-solvent polyurethane layer formed after 110 DEG C of pre-reaction 2min；At 160 DEG C of 1.2mm woven fabric Synthetic Leather It is bonded after tentering, cooling with polyether-type no-solvent polyurethane layer, 150 DEG C of curing 10min of baking oven after common clot, then are passed through 70 DEG C of curing chamber curings are for 24 hours；Bloom mirror surface film stripping is obtained into solvent-free bloom lacquer painting superfine fiber polyurethane leather finished product.
150 DEG C of heating 10min of woven fabric Synthetic Leather, shrinking percentage 2.5%；
Viscosity at 25 DEG C of surface layer polyurethane slurry is 2500cps, is made of by weight following components:
Viscosity at 25 DEG C of middle layer polyurethane slurry is 5200cps, is made of by weight following components:
Polyether-type no-solvent polyurethane slurry is made by weight of following components:
To verify effect of the invention, sample made from above-described embodiment 1-3 is subjected to detection test: being deflected at 25 DEG C It does not crack for 500000 times, 80,000 times is deflected at -20 DEG C and is not cracked；The H-22 grinding wheel of Taber test is carried out, 1Kg scratch resistance performance of bearing a heavy burden More than 5000 times；At 70 DEG C of climatic chamber, humidity is placed 7 weeks under conditions of being 95%, and leather surface not dusting is not cracked；To implementation The DMF content of example 1-3 is detected, and content is 40ppm in embodiment 1, and content is 45ppm in embodiment 2, is contained in embodiment 3 Amount is 32ppm, meets industry requirement.

Claims (10)

1. a kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather, it is characterised in that: the Synthetic Leather is from upper It is successively by surface layer layer of polyurethane, intermediate urethane layer, polyether-type no-solvent polyurethane layer, woven fabric Synthetic Leather four down Layer structure composition；The polyether-type no-solvent polyurethane layer is made of by weight following components:
80 parts of polytetrahydrofuran dihydric alcohol；
10-15 parts of chain extender；
45-50 parts of filler；
0.05-0.3 parts of catalyst；
90-100 parts of Isocyanate prepolymers body.
2. a kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 1, it is characterised in that: institute It states surface layer layer of polyurethane and is made of by weight following components:
100 parts of resin of polycaprolactone polyethers composite polyurethane；
55-65 parts of dimethylformamide；
15-20 parts of pigment；
0.08-0.1 parts of levelling agent；
The intermediate urethane layer is made of by weight following components:
100 parts of polyether polyester composite polyurethane resin；
30-50 parts of dimethylformamide；
10-22 parts of pigment；
0.25-0.5 parts of levelling agent.
3. a kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 1, it is characterised in that: institute The polytetrahydrofuran dihydric alcohol average molecular weight stated is 1000-3000 g/mol；
The chain extender is at least one of ethylene glycol, propylene glycol, 1,4-butanediol；
The partial size of the filler is greater than 800 mesh, filler CaCO3、AL(OH)3At least one of；
The catalyst is at least one of organometallic catalysts BICAT 8106, BICAT 3228, BICAT 4232；
The Isocyanate prepolymers body is isocyanate-terminated polyurethane resin performed polymer, and viscosity is 1500- at 25 DEG C 2500 cps。
4. a kind of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 2, it is characterised in that: institute 100% modulus for stating polycaprolactone polyethers composite polyurethane resin is 90-140 kg/cm2；
The solid content of the polyether polyester composite polyurethane resin is 45-55%；
The pigment is organic mill base；
The levelling agent is polyether silicones.
5. preparing a kind of side of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to any one of claims 1-4 Method, characterized by the following steps:
A, one layer of surface layer polyurethane slurry, drying forming face layer layer of polyurethane are coated on bloom mirror film；
B, one layer of middle layer polyurethane slurry is coated on surface layer layer of polyurethane, drying forms intermediate urethane layer；
C, it is coated with a strata ether type no-solvent polyurethane slurry on intermediate urethane layer, it is solvent-free to form polyether-type after pre-reaction Layer of polyurethane；Tentering woven fabric Synthetic Leather is bonded with polyether-type no-solvent polyurethane layer with pressure roller；Baking oven cures, is common Clot is cured through curing chamber again, by bloom mirror surface film stripping, obtains solvent-free bloom lacquer painting superfine fiber polyurethane leather.
6. a kind of preparation method of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 5, Be characterized in that: the tentering woven fabric Synthetic Leather is that woven fabric Synthetic Leather passes through at 140~160 DEG C through tentering machine Tentering, cooling are made；The woven fabric Synthetic Leather 10 min shrinking percentages are low with a thickness of 0.7-1.2 mm, at 150 DEG C In 3%.
7. a kind of preparation method of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 5, Be characterized in that: viscosity of the surface layer polyurethane slurry at 25 DEG C described in step a is 2000~2500 cps, coating thickness 13- 16；The drying temperature is 110~130 DEG C.
8. a kind of preparation method of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 5, Be characterized in that: the viscosity described in step b at 25 DEG C of middle layer polyurethane slurry is 5000~5500 cps, coating thickness 25- 30；The drying temperature is 120~140 DEG C.
9. a kind of preparation method of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 5, Be characterized in that: polyether-type no-solvent polyurethane slurry thickness described in step c is 40-50；The pre-reaction condition is 90 ~ 120 Pre-reaction 2-3 min at DEG C；The baking oven curing refers to 140 ~ 150 DEG C of baking oven curing 8-10 min.
10. a kind of preparation method of solvent-free bloom lacquer painting superfine fiber polyurethane leather according to claim 5, Be characterized in that: the bloom mirror film is high-temperature polyester mirror film, and with a thickness of 0.15-0.2 mm, light transmittance >=90% is resistant to 150 DEG C or more high temperature.
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CN109137553A (en) * 2018-10-09 2019-01-04 东莞市高示新材料有限公司 One kind is from flame-proof solvent-free artificial leather structure and technique
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CN109652994A (en) * 2018-11-30 2019-04-19 安徽安利材料科技股份有限公司 Two-sided no folding line no-solvent polyurethane luggage synthetic leather of one kind and preparation method thereof
CN109440484B (en) * 2018-12-13 2021-08-27 安徽安利材料科技股份有限公司 Soft solvent-free flame-retardant polyurethane synthetic leather and preparation method thereof
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