CN107313264A - A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection - Google Patents

A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection Download PDF

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Publication number
CN107313264A
CN107313264A CN201710713825.1A CN201710713825A CN107313264A CN 107313264 A CN107313264 A CN 107313264A CN 201710713825 A CN201710713825 A CN 201710713825A CN 107313264 A CN107313264 A CN 107313264A
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polyurethane
surface layer
processing procedure
pearly
lustre
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CN107313264B (en
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迟红梅
张玉萍
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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    • 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
    • D06N3/0095Artificial 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
    • D06N3/0097Release surface, e.g. separation sheets; Silicone papers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04Polyurethanes
    • 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
    • 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
    • D06N3/12Artificial 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
    • D06N3/145Artificial 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
    • 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
    • D06N2209/00Properties of the materials
    • D06N2209/08Properties of the materials having optical properties
    • D06N2209/0807Coloured
    • D06N2209/083Multi-coloured
    • 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
    • D06N2209/00Properties of the materials
    • D06N2209/08Properties of the materials having optical properties
    • D06N2209/0838Bright, glossy, shiny surface
    • 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
    • D06N2209/00Properties of the materials
    • D06N2209/08Properties of the materials having optical properties
    • D06N2209/0861Transparent
    • 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
    • D06N2209/00Properties of the materials
    • D06N2209/10Properties of the materials having mechanical properties
    • D06N2209/105Resistant to abrasion, scratch
    • 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
    • D06N2209/00Properties of the materials
    • D06N2209/10Properties of the materials having mechanical properties
    • D06N2209/108Slipping, anti-blocking, low friction
    • 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 preparation method of the double processing procedure mirror crystal leathers of environment-friendly type, select polyester polyethers copolymerization type polyurethane resin, pearl essence, pigment, dimethylformamide is the surface layer of dry method first and adhesive linkage laminating no wrinkle elastic force wet-method synthetic leather semi-finished product, dry method semi-finished product are extruded by pearly-lustre solid grain using cold-press process, using the high modulus polyurethane surface layer colorless slurry and high solid two liquid type polyurethane colorless slurry of polyester polyethers copolymerization, the absolutely dry patch technique of secondary dry method is carried out on mirror surface release paper, the double processing procedure mirror crystal leathers of environment-friendly type are obtained after being fitted to pearly-lustre embossing semi-finished product.The double processing procedure mirror crystal leathers of environment-friendly type prepared by the present invention have the advantages that crystal gloss, transparency height, the beautiful fashion of color, surface touch is smooth, lines is three-dimensional, surface abrasion resistance scratch resistance without folding line, DMF less residues, EC regulations can be reached《Registration, assessment, mandate and the limitation of chemicals》REACH environmental requirements.

Description

A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection
Technical field
The present invention relates to Synthetic Leather preparation method field, the system of specifically a kind of double processing procedure mirror crystal leathers of environmental protection Preparation Method.
Background technology
Synthetic leather as natural leather substitute, based on synthetic material, with quality is homogeneous, industrialized production, The features such as physical and mechanical properties is excellent, the product, day such as the footwear made using synthetic leather, clothes, case and bag, furniture and automotive trim Benefit obtains market and the accreditation of consumer, and its application opened up and abundant species are that traditional natural leather can not Meet.
Current solvent borne polyurethane is still the main flow of synthetic leather production, in recent years due to the continuous increasing of consumer's environmental consciousness To be trend that synthetic leather develops using the low solvent of high solids content or solventfree resin the need for strong and market.It is common molten When formulation polyurethane resin is fitted as intermediate layer resin, have the advantages that adhesive strength is high, but be due to solvent borne polyurethane The characteristics of with low-solid content high solvent amount, there is big-pattern and deep decorative pattern is difficult filling, is also easy to produce bubble, DMF residual quantities Big the problems such as;And solventfree resin is as Polyurethane Interlayer resin, after its cross-linking reaction that film strength is high, the degree of cross linking is high, does not have There are DMF residue problems, but membrane crystallization degree is high, permeability is poor, is not suitable for mirror crystal class product.Therefore, a environmental protection is developed Type mirror crystal leather meets the demand in consumer and market, has great importance.
The content of the invention is it is an object of the invention to provide a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, to solve The big lines of prior art mirror crystal leather and deep lines hardly possible patch, it is also easy to produce bubble, the problem of DMF residual quantities are big.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:Comprise the following steps:
(1), a processing procedure:The preparation of semi-finished product is removed from office, process is as follows:
(1.1), uniform coating a layer thickness is the pearly-lustre surface layer polyurethane slurry of 12-15 on plain weave paper, by pearly-lustre surface layer Polyurethane slurry formation surface layer, then dries surface layer at a temperature of 110~130 DEG C and pearly-lustre surface layer polyurethane film, the pearly-lustre is made Surface layer polyurethane film is made up of plain weave paper and surface layer, and wherein the viscosity of pearly-lustre surface layer polyurethane slurry is 2000~2500cps/25 ℃;
(1.2), uniform coating a layer thickness is the adhesive linkage polyurethane slurry of 13-18 on surface layer in pearly-lustre surface layer polyurethane film Material, forms adhesive linkage by adhesive linkage polyurethane slurry, adhesive linkage is dried to after leather hard and wet method at a temperature of 90~110 DEG C Bass synthetic leather is fitted, and is cooled down after then being dried at a temperature of 120~140 DEG C, and plain weave paper is peeled off, and is obtained pearly-lustre and is put down Line polyurethane leather semi-finished product, the wherein viscosity of adhesive linkage polyurethane slurry are 3500~4000cps/25 DEG C;
(1.3), by pearly-lustre plain weave polyurethane leather semi-finished product 180~220 DEG C of condition lower corrugateds on cold press, then cooling is obtained Pearly-lustre embosses polyurethane leather semi-finished product;
(2), two processing procedures:Mirror surface release paper shifts veneer, and process is as follows:
(2.1), uniform coating a layer thickness is the surface layer polyurethane colorless slurry of 12-15 on mirror surface release paper, and 110 Surface layer polyurethane colorless slurry is dried at a temperature of~130 DEG C transparent surface layer polyurethane film is made, the surface layer polyurethane is without mill base The viscosity of material is 2000~2500cps/25 DEG C;
(2.2), uniform coating a layer thickness is the high solid content polyurethane of 25-35 without mill base on transparent surface layer polyurethane film Material, makes the solvent in large arch dam polyurethane colorless slurry volatilize complete, while making the poly- ammonia of high solids content at a temperature of 130-140 DEG C Ester colorless slurry fitted under also uncrosslinked reactiveness pearly-lustre embossing polyurethane leather semi-finished product, subsequently into 140~150 DEG C of temperature The baking oven cross-linking curing of degree 8-10 minutes, finally cools down and the double processing procedure mirror crystals of environment-friendly type is obtained after mirror surface release paper is peeled off Remove from office finished product.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The step(1.1)Middle pearl Light surface layer polyurethane slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
50~70 parts of dimethylformamide;
2-6 parts of pearl essence;
0.05~0.2 part of levelling agent.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The step(1.2)In glue Layer polyurethane slurry is connect to be made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
30~50 parts of dimethylformamide;
10-25 parts of pigment;
0.05~0.1 part of levelling agent.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The step(1.2)In it is wet The thickness of method bass synthetic leather is 0.7-1.0mm.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The step(2.1)Middle face Strata urethane colorless slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
50~70 parts of dimethylformamide.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The step(2.2)Middle height Solid content polyurethane colorless slurry is made up by weight of following components:
100 parts of high solid content polyurethane resin;
8~10 parts of bridging agent.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The poly- ammonia of high solids content Ester resin is polyisocyanates performed polymer, and solid content is 80%-90%;Described bridging agent is alkyl polyamine class bridging agent, admittedly contain Measure as 100%.
A kind of preparation method of the described double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:The step(2.2)Middle height The viscosity of solid content polyurethane colorless slurry is 8000~9000cps/25 DEG C.
Compared with prior art, the present invention has following clear superiority:
1. a kind of environment-friendly type mirror crystal leather appearance characteristics crystal gloss prepared by the present invention, transparency height, the beautiful fashion of color, Surface touch is smooth, lines is three-dimensional;
2. a kind of environment-friendly type mirror crystal leather physical and mechanical properties prepared by the present invention is excellent, surface abrasion resistance scratch resistance is without folding line (Taber is wear-resisting:>=H-22*1KG*2000 times, the five fingers scraping tester:Surface is made a round trip under 10N pressure conditions without scratch)、 Normal temperature song is rich and cold tolerance is excellent(25 DEG C * 10 ten thousand times, -10 DEG C * 4 ten thousand times);
3. the preparation method production of the present invention is workable, while environmentally friendly low-carbon(DMF≤1000ppm), meet EC regulations 《Registration, assessment, mandate and the limitation of chemicals》REACH standards.
Embodiment
A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, comprises the following steps:
(1), a processing procedure:The preparation of semi-finished product is removed from office, process is as follows:
(1.1), uniform coating a layer thickness is the pearly-lustre surface layer polyurethane slurry of 12-15 on plain weave paper, by pearly-lustre surface layer Polyurethane slurry formation surface layer, then dries surface layer at a temperature of 110~130 DEG C and pearly-lustre surface layer polyurethane film, the pearly-lustre is made Surface layer polyurethane film is made up of plain weave paper and surface layer, and wherein the viscosity of pearly-lustre surface layer polyurethane slurry is 2000~2500cps/25 ℃;
(1.2), uniform coating a layer thickness is the adhesive linkage polyurethane slurry of 13-18 on surface layer in pearly-lustre surface layer polyurethane film Material, forms adhesive linkage by adhesive linkage polyurethane slurry, adhesive linkage is dried to after leather hard and wet method at a temperature of 90~110 DEG C Bass synthetic leather is fitted, and is cooled down after then being dried at a temperature of 120~140 DEG C, and plain weave paper is peeled off, and is obtained pearly-lustre and is put down Line polyurethane leather semi-finished product, the wherein viscosity of adhesive linkage polyurethane slurry are 3500~4000cps/25 DEG C;
(1.3), by pearly-lustre plain weave polyurethane leather semi-finished product 180~220 DEG C of condition lower corrugateds on cold press, then cooling is obtained Pearly-lustre embosses polyurethane leather semi-finished product;
(2), two processing procedures:Mirror surface release paper shifts veneer, and process is as follows:
(2.1), uniform coating a layer thickness is the surface layer polyurethane colorless slurry of 12-15 on mirror surface release paper, and 110 Surface layer polyurethane colorless slurry is dried at a temperature of~130 DEG C transparent surface layer polyurethane film is made, the surface layer polyurethane is without mill base The viscosity of material is 2000~2500cps/25 DEG C;
(2.2), uniform coating a layer thickness is the high solid content polyurethane of 25-35 without mill base on transparent surface layer polyurethane film Material, makes the solvent in large arch dam polyurethane colorless slurry volatilize complete, while making the poly- ammonia of high solids content at a temperature of 130-140 DEG C Ester colorless slurry fitted under also uncrosslinked reactiveness pearly-lustre embossing polyurethane leather semi-finished product, subsequently into 140~150 DEG C of temperature The baking oven cross-linking curing of degree 8-10 minutes, finally cools down and the double processing procedure mirror crystals of environment-friendly type is obtained after mirror surface release paper is peeled off Remove from office finished product.
Step(1.1)Middle pearly-lustre surface layer polyurethane slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
50~70 parts of dimethylformamide;
2-6 parts of pearl essence;
0.05~0.2 part of levelling agent.
Step(1.2)Middle adhesive linkage polyurethane slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
30~50 parts of dimethylformamide;
10-25 parts of pigment;
0.05~0.1 part of levelling agent.
Step(1.2)The thickness of middle wet method bass synthetic leather is 0.7-1.0mm.
Step(2.1)Middle surface layer polyurethane colorless slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
50~70 parts of dimethylformamide.
Step(2.2)Middle high solid content polyurethane colorless slurry is made up by weight of following components:
100 parts of high solid content polyurethane resin;
8~10 parts of bridging agent.
High solid content polyurethane resin is polyisocyanates performed polymer, and solid content is 80%-90%;Described bridging agent is alkane Quito amine bridging agent, solid content is 100%.
Step(2.2)The viscosity of middle high solid content polyurethane colorless slurry is 8000~9000cps/25 DEG C.
Polyurethane resin sets different proportionings and dimethylformamide, pigment, levelling agent by weight in following embodiment Mixing, so as to get the performance such as polyurethane slurry viscosity produce certain difference.The surface layer polyurethane used in first time processing procedure Polyester polyethers copolymerization polyurethane resin uses Hefei Anli New Material Polyurethane Co., Ltd.'s trade mark for ST-85 products in slurry; Polyester polyethers copolymerization polyurethane resin uses Hefei Anli New Material Polyurethane Co., Ltd.'s trade mark in adhesive linkage polyurethane slurry For SA-28 products;Levelling agent 9565 uses Shanghai Bo Jun Industrial Co., Ltd.s;The surface layer polyurethane slurry used in secondary processing procedure Middle polyester polyethers copolymerization polyurethane resin uses Hefei Anli New Material Polyurethane Co., Ltd.'s trade mark for LT-115 products;Gao Gu Content polyurethane resin and bridging agent use Hefei Anli New Material Polyurethane Co., Ltd.'s trade mark for AT-9050 products and B-9 products.
Embodiment 1
A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, step is as follows:
One processing procedure removes from office the preparation of semi-finished product:
(a)100 parts of ST-85 polyurethane resins, 3 parts of pearl essences and 0.1 part of 9565 levelling agent are dissolved in into 50 parts of dimethyl together Carry out being thoroughly mixed uniformly in formamide solution, obtain the surface layer slurry that viscosity is 2500cps/25 DEG C, by its uniform painting Overlay on plain weave paper, coating thickness 12, pearly-lustre surface layer polyurethane film is made in 120 DEG C of drying;
(b)100 parts of SA-28 polyurethane resins, 10 parts of pigment and 0.05 part of 9565 levelling agent are dissolved in into 45 parts of dimethyl together Carry out being thoroughly mixed uniform in formamide solution, it is 3800 cps/25 DEG C of adhesive linkage slurries to obtain viscosity, and its is uniform Be coated on surface layer polyurethane film, coating thickness 15,100 DEG C are dried wet method bass synthetic leather with 0.8mm under leather hards Fitted, subsequently into drying, cooling down in 130 DEG C of baking ovens, obtain pearly-lustre plain weave polyurethane leather semi-finished product;
(c)By pearly-lustre plain weave polyurethane leather semi-finished product 190 DEG C of condition lower corrugateds on cold press, cooling obtains pearly-lustre and embosses poly- ammonia Ester removes from office semi-finished product;
Two processing procedure mirror surface release papers shift veneer:
(d)100 parts of LT-115 polyurethane resins and 50 parts of dimethyl formamide solutions be thoroughly mixed uniformly, obtained Viscosity is 2400 cps/25 DEG C of surface layer colorless slurries, is coated uniformly on mirror surface release paper, coating thickness 15,130 Transparent surface layer polyurethane film is made in DEG C drying;
(e)100 parts of AT-9050 high solid content resins, 9 parts of B-9 bridging agents be thoroughly mixed uniformly, obtaining viscosity is 8500 cps/25 DEG C of high solid content polyurethane colorless slurries, it is uniformly coated on transparent surface layer polyurethane film, is coated Thickness 25,130 DEG C dry 1 minute after laminating pearly-lustre embossing polyurethane semi-finished product, it is cold into 145 DEG C of baking oven cross-linking curings 9 minutes But the double processing procedure mirror crystal leather finished products of environment-friendly type are made.
The double processing procedure mirror crystal leather performance test results of environment-friendly type prepared by the embodiment are:It is bent at 25 DEG C to have mercy on 100,000 times not Cracking, do not ftracture for bent rich 40,000 times at -10 DEG C;The wear-resisting H-22*1000G*2000 subsurfaces of Taber are not broken, the five fingers scrape test and existed Surface is made a round trip under 10N pressure conditions without scratch;DMF content detections 506ppm.
Embodiment 2
A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, step is as follows:
One processing procedure removes from office the preparation of semi-finished product:
(a)100 parts of ST-85 polyurethane resins, 5 parts of pearl essences and 0.15 part of 9565 levelling agent are dissolved in into 60 parts of dimethyl together Carry out being thoroughly mixed uniformly in formamide solution, obtain the surface layer slurry that viscosity is 2300cps/25 DEG C, by its uniform painting Overlay on plain weave paper, coating thickness 14, pearly-lustre surface layer polyurethane film is made in 130 DEG C of drying;
(b)100 parts of SA-28 polyurethane resins, 25 parts of pigment and 0.08 part of 9565 levelling agent are dissolved in into 35 parts of dimethyl together Carry out being thoroughly mixed uniform in formamide solution, it is 3900 cps/25 DEG C of adhesive linkage slurries to obtain viscosity, and its is uniform Be coated on surface layer polyurethane film, coating thickness 13,95 DEG C are dried under leather hards to enter with 0.7mm wet method bass synthetic leather Row laminating, subsequently into drying, cooling down in 125 DEG C of baking ovens, obtains pearly-lustre plain weave polyurethane leather semi-finished product;
(c)By pearly-lustre plain weave polyurethane leather semi-finished product 180 DEG C of condition lower corrugateds on cold press, cooling obtains pearly-lustre and embosses poly- ammonia Ester removes from office semi-finished product;
Two processing procedure mirror surface release papers shift veneer:
(d)100 parts of LT-115 polyurethane resins and 60 parts of dimethyl formamide solutions be thoroughly mixed uniformly, obtained Viscosity is 2200 cps/25 DEG C of surface layer colorless slurries, is coated uniformly on mirror surface release paper, coating thickness 14,130 Transparent surface layer polyurethane film is made in DEG C drying;
(e)100 parts of AT-9050 high solid content resins, 8.5 parts of B-9 bridging agents be thoroughly mixed uniformly, viscosity is obtained For 9000 cps/25 DEG C of high solid content polyurethane colorless slurries, it is uniformly coated on transparent surface layer polyurethane film, applied Cover thickness 30,135 DEG C dry 1 minute after laminating pearly-lustre embossing polyurethane semi-finished product, into 140 DEG C of 10 points of baking oven cross-linking curings The double processing procedure mirror crystal leather finished products of environment-friendly type are made in clock, cooling.
The double processing procedure mirror crystal leather performance test results of environment-friendly type prepared by the embodiment are:It is bent at 25 DEG C to have mercy on 100,000 times not Cracking, do not ftracture for bent rich 40,000 times at -10 DEG C;The wear-resisting H-22*1000G*2000 subsurfaces of Taber are not broken, the five fingers scrape test and existed Surface is made a round trip under 10N pressure conditions without scratch;DMF content detections 672ppm.
Embodiment 3
A kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, step is as follows:
One processing procedure removes from office the preparation of semi-finished product:
(a)100 parts of ST-85 polyurethane resins, 6 parts of pearl essences and 0.1 part of 9565 levelling agent are dissolved in into 70 parts of dimethyl together Carry out being thoroughly mixed uniformly in formamide solution, obtain the surface layer slurry that viscosity is 2000cps/25 DEG C, by its uniform painting Overlay on plain weave paper, coating thickness 15, pearly-lustre surface layer polyurethane film is made in 120 DEG C of drying;
(b)100 parts of SA-28 polyurethane resins, 20 parts of pigment and 0.06 part of 9565 levelling agent are dissolved in into 50 parts of dimethyl together Carry out being thoroughly mixed uniformly in formamide solution, obtain the adhesive linkage slurry that viscosity is 3500cps/25 DEG C, its is uniform Be coated on surface layer polyurethane film, coating thickness 18,110 DEG C are dried wet method bass synthetic leather with 0.9mm under leather hards Fitted, subsequently into drying, cooling down in 140 DEG C of baking ovens, obtain pearly-lustre plain weave polyurethane leather semi-finished product;
(c)By pearly-lustre plain weave polyurethane leather semi-finished product 210 DEG C of condition lower corrugateds on cold press, cooling obtains pearly-lustre and embosses poly- ammonia Ester removes from office semi-finished product;
Two processing procedure mirror surface release papers shift veneer:
(d)100 parts of LT-115 polyurethane resins and 70 parts of dimethyl formamide solutions be thoroughly mixed uniformly, obtained Viscosity is 2000 cps/25 DEG C of surface layer colorless slurries, is coated uniformly on mirror surface release paper, coating thickness 15,125 Transparent surface layer polyurethane film is made in DEG C drying;
(e)100 parts of AT-9050 high solid content resins, 9.5 parts of B-9 bridging agents be thoroughly mixed uniformly, viscosity is obtained For 8000 cps/25 DEG C of high solid content polyurethane colorless slurries, it is uniformly coated on transparent surface layer polyurethane film, applied Cover thickness 35,140 DEG C dry 1 minute after laminating pearly-lustre embossing polyurethane semi-finished product, into 150 DEG C of baking oven cross-linking curings 9 minutes, The double processing procedure mirror crystal leather finished products of environment-friendly type are made in cooling.
The double processing procedure mirror crystal leather performance test results of environment-friendly type prepared by the embodiment are:It is bent at 25 DEG C to have mercy on 100,000 times not Cracking, do not ftracture for bent rich 40,000 times at -10 DEG C;The wear-resisting H-22*1000G*2000 subsurfaces of Taber are not broken, the five fingers scrape test and existed Surface is made a round trip under 10N pressure conditions without scratch;DMF content detections 438ppm.

Claims (8)

1. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection, it is characterised in that:Comprise the following steps:
(1), a processing procedure:The preparation of semi-finished product is removed from office, process is as follows:
(1.1), uniform coating a layer thickness is the pearly-lustre surface layer polyurethane slurry of 12-15 on plain weave paper, by pearly-lustre surface layer Polyurethane slurry formation surface layer, then dries surface layer at a temperature of 110~130 DEG C and pearly-lustre surface layer polyurethane film, the pearly-lustre is made Surface layer polyurethane film is made up of plain weave paper and surface layer, and wherein the viscosity of pearly-lustre surface layer polyurethane slurry is 2000~2500cps/25 ℃;
(1.2), uniform coating a layer thickness is the adhesive linkage polyurethane slurry of 13-18 on surface layer in pearly-lustre surface layer polyurethane film Material, forms adhesive linkage by adhesive linkage polyurethane slurry, adhesive linkage is dried to after leather hard and wet method at a temperature of 90~110 DEG C Bass synthetic leather is fitted, and is cooled down after then being dried at a temperature of 120~140 DEG C, and plain weave paper is peeled off, and is obtained pearly-lustre and is put down Line polyurethane leather semi-finished product, the wherein viscosity of adhesive linkage polyurethane slurry are 3500~4000cps/25 DEG C;
(1.3), by pearly-lustre plain weave polyurethane leather semi-finished product 180~220 DEG C of condition lower corrugateds on cold press, then cooling is obtained Pearly-lustre embosses polyurethane leather semi-finished product;
(2), two processing procedures:Mirror surface release paper shifts veneer, and process is as follows:
(2.1), uniform coating a layer thickness is the surface layer polyurethane colorless slurry of 12-15 on mirror surface release paper, and 110 Surface layer polyurethane colorless slurry is dried at a temperature of~130 DEG C transparent surface layer polyurethane film is made, the surface layer polyurethane is without mill base The viscosity of material is 2000~2500cps/25 DEG C;
(2.2), uniform coating a layer thickness is the high solid content polyurethane of 25-35 without mill base on transparent surface layer polyurethane film Material, makes the solvent in large arch dam polyurethane colorless slurry volatilize complete, while making the poly- ammonia of high solids content at a temperature of 130-140 DEG C Ester colorless slurry fitted under also uncrosslinked reactiveness pearly-lustre embossing polyurethane leather semi-finished product, subsequently into 140~150 DEG C of temperature The baking oven cross-linking curing of degree 8-10 minutes, finally cools down and the double processing procedure mirror crystals of environment-friendly type is obtained after mirror surface release paper is peeled off Remove from office finished product.
2. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 1, it is characterised in that:The step Suddenly(1.1)Middle pearly-lustre surface layer polyurethane slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
50~70 parts of dimethylformamide;
2-6 parts of pearl essence;
0.05~0.2 part of levelling agent.
3. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 1, it is characterised in that:The step Suddenly(1.2)Middle adhesive linkage polyurethane slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
30~50 parts of dimethylformamide;
10-25 parts of pigment;
0.05~0.1 part of levelling agent.
4. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 1, it is characterised in that:The step Suddenly(1.2)The thickness of middle wet method bass synthetic leather is 0.7-1.0mm.
5. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 1, it is characterised in that:The step Suddenly(2.1)Middle surface layer polyurethane colorless slurry is made up by weight of following components:
100 parts of polyester polyethers copolymerization polyurethane resin;
50~70 parts of dimethylformamide.
6. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 1, it is characterised in that:The step Suddenly(2.2)Middle high solid content polyurethane colorless slurry is made up by weight of following components:
100 parts of high solid content polyurethane resin;
8~10 parts of bridging agent.
7. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 6, it is characterised in that:The height Solid content polyurethane resin is polyisocyanates performed polymer, and solid content is 80%-90%;Described bridging agent is alkyl polyamine class frame Bridge agent, solid content is 100%.
8. a kind of preparation method of the double processing procedure mirror crystal leathers of environmental protection according to claim 1, it is characterised in that:The step Suddenly(2.2)The viscosity of middle high solid content polyurethane colorless slurry is 8000~9000cps/25 DEG C.
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