CN112391850A - Environment-friendly polyurethane synthetic leather for slow-rebound sofa furniture and preparation method thereof - Google Patents
Environment-friendly polyurethane synthetic leather for slow-rebound sofa furniture and preparation method thereof Download PDFInfo
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- CN112391850A CN112391850A CN202011204842.0A CN202011204842A CN112391850A CN 112391850 A CN112391850 A CN 112391850A CN 202011204842 A CN202011204842 A CN 202011204842A CN 112391850 A CN112391850 A CN 112391850A
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 45
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 42
- 239000004814 polyurethane Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 6
- 239000004611 light stabiliser Substances 0.000 claims abstract description 6
- 229920000570 polyether Polymers 0.000 claims abstract description 6
- 229920002545 silicone oil Polymers 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012948 isocyanate Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 4
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 3
- 230000005764 inhibitory process Effects 0.000 claims abstract description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000004417 polycarbonate Substances 0.000 claims abstract description 3
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 47
- 238000002156 mixing Methods 0.000 claims description 27
- 239000000047 product Substances 0.000 claims description 25
- 239000002344 surface layer Substances 0.000 claims description 25
- 239000004744 fabric Substances 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 13
- 239000003963 antioxidant agent Substances 0.000 claims description 11
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000000049 pigment Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920005749 polyurethane resin Polymers 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 7
- 239000011265 semifinished product Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- -1 polymethylene Polymers 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000003475 lamination Methods 0.000 claims description 2
- 229920001228 polyisocyanate Polymers 0.000 claims description 2
- 239000005056 polyisocyanate Substances 0.000 claims description 2
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 2
- BKLGNGGEJNHIQT-UHFFFAOYSA-N prop-2-enoic acid;silicon Chemical compound [Si].OC(=O)C=C BKLGNGGEJNHIQT-UHFFFAOYSA-N 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims 1
- LNWBFIVSTXCJJG-UHFFFAOYSA-N [diisocyanato(phenyl)methyl]benzene Chemical group C=1C=CC=CC=1C(N=C=O)(N=C=O)C1=CC=CC=C1 LNWBFIVSTXCJJG-UHFFFAOYSA-N 0.000 claims 1
- JXCHMDATRWUOAP-UHFFFAOYSA-N diisocyanatomethylbenzene Chemical compound O=C=NC(N=C=O)C1=CC=CC=C1 JXCHMDATRWUOAP-UHFFFAOYSA-N 0.000 claims 1
- 239000003063 flame retardant Substances 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000007062 hydrolysis Effects 0.000 abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 8
- 239000010985 leather Substances 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 229920006313 waterborne resin Polymers 0.000 description 3
- 239000013035 waterborne resin Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000012257 stirred material Substances 0.000 description 2
- GJDRKHHGPHLVNI-UHFFFAOYSA-N 2,6-ditert-butyl-4-(diethoxyphosphorylmethyl)phenol Chemical compound CCOP(=O)(OCC)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 GJDRKHHGPHLVNI-UHFFFAOYSA-N 0.000 description 1
- ZVVFVKJZNVSANF-UHFFFAOYSA-N 6-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]hexyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCCCCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 ZVVFVKJZNVSANF-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- OOCILPYOPQKPJY-UHFFFAOYSA-N calcium;(3,5-ditert-butyl-4-hydroxyphenyl)methyl-ethoxyphosphinic acid Chemical compound [Ca].CCOP(O)(=O)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 OOCILPYOPQKPJY-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- 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
-
- 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
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/04—Vegetal fibres
- D06N2201/042—Cellulose fibres, e.g. cotton
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/14—Furniture, upholstery
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses an environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture and a preparation method thereof. The solvent-free foaming bonding layer comprises a component A and a component B, wherein the molar ratio of-NCO in the component B to-OH in the component A is 0.90-0.96, the component A comprises the following raw materials of polyether polycarbonate copolymerization type dihydric alcohol, polyether trihydric alcohol, an inhibition type catalyst, monohydroxy silicone oil, double-end hydroxyl silicone oil, a viscosity regulator, a light/heat stabilizer and a filler, and the main raw material of the component B is isocyanate. The polyurethane synthetic leather prepared by the invention has the advantages of excellent environmental protection performance, good durability, soft hand feeling, strong skin feeling, excellent hydrolysis resistance, simple and efficient production process, environmental protection and capability of meeting the market demand of environment-friendly sofa leather.
Description
Technical Field
The invention relates to polyurethane synthetic leather, in particular to environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture and a preparation method thereof.
Background
With the continuous improvement of the requirements of global consumers on health, ecology, green and environmental protection, the requirements of developed countries and regions such as European Union, America, Japan and Korean on the ecological environmental protection performance of synthetic leather are becoming strict, and the production of ecological environmental protection type polyurethane synthetic leather has become a future development trend.
Traditional polyurethane synthetic leather mostly adopts solvent type polyurethane resin as raw materials, so that a large amount of waste liquid and waste gas can be generated in the production and manufacturing process, the physical and mental health of workers at the same line is damaged, the environment is seriously polluted, the defects of hard hand feeling, strong plastic feeling, poor physical property and hydrolysis resistance and the like generally exist in the polyurethane synthetic leather sold in the current market, the more strict environmental protection requirement and the consumer requirement are hardly met, and the further development of the polyurethane synthetic leather industry is limited.
The water-based polyurethane has the characteristics of environmental friendliness, less energy consumption, good use performance and the like due to excellent health, environmental protection and physical properties of the water-based polyurethane, and the solvent-free polyurethane synthetic leather has great application fields in the synthetic leather industry, can be widely used for processing and manufacturing sofa furniture, seats and the like, greatly widens the market of the environment-friendly polyurethane synthetic leather, meets the requirements of consumers to the maximum extent, and improves the competitiveness of the polyurethane synthetic leather in the market. Under the situation, the polyurethane synthetic leather with strong environmental protection, good durability, soft hand feeling, strong skin-friendly feeling and excellent hydrolysis resistance is researched and developed to meet the requirements of the market on the functionality and diversity of synthetic leather products.
Disclosure of Invention
The invention aims to provide the environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture and the preparation method thereof.
In order to overcome the problems in the prior art and achieve the purpose, the invention adopts the following technical scheme:
the environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture sequentially comprises a surface layer, a middle layer, a solvent-free bonding layer and base cloth from top to bottom; the method is characterized in that: the bonding layer consists of an A component containing-OH and a B component containing isocyanate groups, wherein the molar ratio of-NCO in the B component to-OH in the A component is 0.90-0.96.
The component A is prepared from the following raw materials in parts by weight:
further, the inhibiting catalyst comprises one or more of BICAT8106, BICAT8108, BICAT3228, Borehi Kat22, Borehi Kat24 and salt compounds of the organic metal catalysts.
In a further scheme, the hydroxyl value of the monohydroxy silicone oil is 15-45 KOHmg/g; the hydroxyl value of the hydroxyl-terminated silicone oil is 20-75 KOHmg/g.
In a further scheme, the light/heat stabilizer is an ultraviolet light absorber, a hindered amine light stabilizer or an antioxidant, when the main antioxidant and the auxiliary antioxidant are added simultaneously, the mass ratio of the main antioxidant to the auxiliary antioxidant is 10:1-5:1, and the filler is one or more of aluminum hydroxide, calcium carbonate and MCA.
In a further scheme, the component B is one or more of diphenylmethane diisocyanate, 4' -diphenylmethane diisocyanate and a mixture of diphenylmethane diisocyanate and polyphenyl polymethylene polyisocyanate.
In a further scheme, the surface layer comprises the following components in parts by weight:
in a further scheme, the waterborne polyurethane resin is prepared by mixing Leasys 3250 and PU-209-7 according to the weight ratio of 1.5 (1-1.5), and the curing agent is one or more of aziridine, polycarbodiimide and blocked isocyanate.
Wherein Leasys 3250 is a product of Tantario corporation, and PU-209-7 is a product of Guangzhou Yinyang New Material corporation.
In a further scheme, the intermediate layer comprises the following raw materials in parts by weight:
in a further scheme, the waterborne polyurethane resin is formed by mixing Tekspro 5215 and JF-PDY-847HY according to the weight ratio of 1 (1-1.5).
Wherein Tekspros 5215 products of Tantantamiun corporation, JF-PDY-847HY is a product of Shanghai Huafeng resin company.
In a further scheme, the base cloth is a Sanyo regenerated fiber base cloth which is composed of regenerated fibers and all cotton woven cloth according to the weight ratio of 3-4:2, the thickness of the base cloth is 1.0 +/-0.1 mm, and the gram weight of the base cloth is 320 +/-20 g/cm2。
The invention also aims to provide a preparation method of the environment-friendly slow rebound polyurethane synthetic leather for sofa furniture
Which comprises the following steps:
(1) fully stirring and uniformly mixing the surface layer slurry, vacuumizing, uniformly coating and scraping the surface layer slurry on the front surface of the release paper to be used as a surface layer, fully stirring and uniformly mixing the intermediate layer slurry, vacuumizing, and uniformly coating and scraping the intermediate layer slurry on the surface layer to obtain an intermediate layer;
(2) respectively adding the component A and the component B into a material storage tank, conveying the mixture into a machine head mixing cavity through a metering pump, blanking while mixing at a high speed, coating the mixture on the middle layer, and heating for reaction to obtain a bonding layer;
(3) adhering base cloth to the bonding layer with proper viscosity, drying and curing to obtain a polyurethane synthetic leather semi-finished product;
(4) and (4) rolling the polyurethane synthetic leather semi-finished product prepared in the step (3), and peeling off release paper to obtain a synthetic leather finished product.
Further, the coating thickness of the surface layer and the middle layer slurry layer in the step (1) is 0.1-0.15mm, and under the condition of gradient temperature rise at 80-140 ℃, air is blown for 30HZ, air is induced for 40HZ, and the vehicle speed is 8-15 m/min;
in the step (2), the mixing and stirring speed of the A, B materials is 3500-;
the drying temperature in the step (3) is 130-135 ℃, the curing time is 4-8min, and the lamination gap when the base cloth is attached is 75-82% of the thickness of the base cloth.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the environment-friendly organic bismuth catalyst and the amine catalyst are matched for use, so that the adhesive layer slurry formed by stirring and mixing the component A and the isocyanate is coated on the intermediate layer, the reaction activity is extremely low at room temperature (25 ℃), the good cutter-passing performance is realized, and when the temperature is higher than 100 ℃, the reaction activity is greatly improved, the reaction time is shortened, and the production efficiency is improved.
2. According to the invention, water-based Leasys 3250 and PU-209-7 are adopted as surface layer resins, water-based resins Tekspro 5215 and JF-PDY-847HY are adopted as middle layer resins, the mixed surface layer water-based resins have moderate modulus and excellent wear resistance, the mixed middle layer resins have low modulus and have excellent bonding fastness with a solvent-free foaming layer; in addition, because the R value in the material of the bonding layer is smaller and is 0.9-0.96, the material A adopts polyether polycarbonate copolymerization dihydric alcohol to form a flexible chain segment through crosslinking, and a small amount of polyether trihydric alcohol is supplemented to form a micro-crosslinking structure, the synthetic leather prepared has soft hand feeling and strong real leather feeling, and simultaneously has strong hydrolysis resistance.
3. The invention adopts the Sanyo regenerated fiber base cloth which is composed of regenerated fibers and all cotton woven cloth according to the weight ratio of 3-4:2, the highest content of the regenerated fibers can reach 66 percent, and the finished leather is soft in hand feeling by combining the formula and the process of the invention.
4. The environment-friendly polyurethane synthetic leather prepared by the invention has the advantages of excellent environment-friendly performance, good durability, soft hand feeling, strong skin-friendly feeling, excellent real leather effect and excellent hydrolysis resistance, is simple and efficient in production process, is environment-friendly, and can meet market demands.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. In practice, the technical personnel according to the invention make improvements and modifications, which still belong to the protection scope of the invention. The parts in the following examples are by mass.
The sources of the raw materials in the following examples are:
the leveling wetting agent Silok 8030F is a product of Sirocco, Guangzhou;
the waterborne wear-resistant additive SY-3520 is a product of Sanyue corporation in Jiangxi;
the defoaming agent BF-2010 is a product of Pasteur company;
the hand feeling agent Silok 50 is a product of Sirocco, Guangzhou;
thickener U-605 is a product of Wanhua chemical company;
the curing agent HYC-100 is a product of Shanghai Dorsen chemical industry Co., Ltd;
curing agent 2794 is a product of Wanhua chemical company;
polycarbodiimide XR-5580 is a product of Stahl company;
the silicon acrylic acid assistant RU-911 is a product of Nissin chemical company of Japan;
the water-based pigment is a product of Shanghai Funai industry Co., Ltd;
tekspro 5215 products of Tahitawa corporation, waterborne resins;
the waterborne resin JF-PDY-847HY is a product of Shanghai Huafeng resin company.
The waterborne resin Leasys 3250 is a product of the Tabacco Wanhua company;
the aqueous resin PU-209-7 is a product of New Guangzhou Yinyang Material Co.
The solvent-free component A is AL-2020A, and the solvent-free component B is isocyanate AL-2020B which is a product of Hefei Anli polyurethane new material company;
antioxidants Irganox259, Irganox1222, Irganox1425 are products of Ciba refinement (Ciba SC);
the ultraviolet absorbers UV-5411 and UV-2337 are cyanogen (Cytec) chemical products;
the hindered amine type stabilizers Tinuvin 791 and Tinuvin 783 are products of Ciba SC;
the inhibition type catalysts BICAT8106, BICAT8108, BICAT3228, Borehikat22 and Borehat 24 are New classical chemical materials (Shanghai) Co., Ltd
Example 1
Firstly, adding 0.5 part of Silok 8030F, 0.6 part of SY-3520, 0.5 part of Silok 50, 0.5 part of 2794, 0.5 part of HYC-100, 0.1 part of BF-2010, 2 parts of RU-911 and 1 part of U-605 into 50 parts of Leasys 3250 and 50 parts of PU-209-7 mixed aqueous resin, adding 8 parts of aqueous pigment color paste, fully stirring and uniformly mixing, vacuumizing, uniformly coating the front surface of release paper to serve as a surface layer, wherein the coating thickness of a surface layer slurry layer is 0.1 mm; then adding 0.3 part of Silok 8030F, 0.4 part of SY-3520, 0.3 part of 2794, 0.5 part of HYC-100, 0.1 part of BF-2010 and 1 part of U-605 into 50 parts of Tekspros 5215 and 50 parts of JF-PDY-847HY mixed aqueous resin, adding 10 parts of pigment color paste, fully stirring and uniformly mixing, vacuumizing, uniformly coating on a surface layer to prepare a middle layer, wherein the coating thickness of a slurry layer of the middle layer is 0.13 mm; and (3) drying at the speed of 8m/min under the conditions of gradient temperature rise of 80-140 ℃, air blast of 30HZ and air induction of 40 HZ.
And secondly, adding 48 parts of AL-2020B and 120 parts of AL-2020A into A, B material storage tanks corresponding to production equipment respectively, conveying A, B uniformly stirred materials to a mixing head by adjusting a metering pump according to a set proportion, pouring the materials on the formed middle layer while quickly mixing at a rotating speed of 3500r/min, and preparing the adhesive layer with the scraping thickness of 0.25 mm.
And then, drying the bonding layer at the temperature of 85 ℃ for 1.5min, attaching 1.0mm of Sanyo regenerated fiber base cloth, and laminating to be 0.75mm to obtain a polyurethane synthetic leather semi-finished product.
And finally, curing at high temperature for 5min at 130 ℃, and then peeling and bundling to obtain the environment-friendly slow-resilience polyurethane synthetic leather for sofa furniture, which has the advantages of excellent environment-friendliness, good durability, soft hand feeling, strong skin feeling and excellent hydrolysis resistance.
Example 2
Firstly, adding 1.0 part of Silok 8030F, 1 part of SY-3520, 0.8 part of Silok 50, 1.0 part of 2794, 0.5 part of HYC-100, 0.1 part of BF-2010, 5 parts of RU-911 and 1.2 parts of U-605 into 60 parts of Leasys 3250 and 40 parts of PU-209-7 mixed aqueous resin, adding 10 parts of aqueous pigment color paste, fully stirring and uniformly mixing, vacuumizing, uniformly coating the front surface of release paper to serve as a surface layer, wherein the coating thickness of a surface layer slurry layer is 0.13 mm; then adding 0.5 part of Silok 8030F, 1 part of SY-3520, 0.5 part of 2794, 0.8 part of HYC-100, 0.15 part of BF-2010 and 0.8 part of U-605 into 50 parts of Tekspros 5215 and 50 parts of JF-PDY-847HY mixed aqueous resin, adding 10 parts of pigment color paste, fully stirring and uniformly mixing, vacuumizing, uniformly coating on a surface layer to prepare a middle layer, wherein the coating thickness of a slurry layer of the middle layer is 0.15 mm; the drying is carried out at the speed of 10m/min under the conditions of gradient temperature rise of 80-140 ℃, air blast of 30HZ and air induction of 40 HZ.
And secondly, adding 49 parts of AL-2020B and 120 parts of AL-2020A into A, B material storage tanks corresponding to production equipment respectively, conveying the A, B uniformly stirred materials to a mixing head according to a set proportion by adjusting a metering pump, pouring the materials on the formed middle layer while quickly mixing at a rotating speed of 3800r/min, and preparing the adhesive layer with a scraping thickness of 0.3 mm.
And then, drying the bonding layer at the temperature of 90 ℃ for 1.2min, attaching 1.0mm of Sanyo regenerated fiber base cloth, and laminating to be 0.72mm to obtain a polyurethane synthetic leather semi-finished product.
And finally, curing at high temperature for 7min at 130 ℃, and then peeling and bundling to obtain the environment-friendly slow-resilience polyurethane synthetic leather for sofa furniture, which has the advantages of excellent environment-friendliness, good durability, soft hand feeling, strong skin feeling and excellent hydrolysis resistance.
Example 3
Firstly, adding 1.5 parts of Silok 8030F, 2 parts of SY-3520, 1.2 parts of Silok 50, 1.0 part of 2794, 1.0 part of HYC-100, 0.15 part of BF-2010, 6 parts of RU-911 and 1 part of U-605 into 60 parts of Leasys 3250 and 40 parts of PU-209-7 mixed aqueous resin, adding 8 parts of aqueous pigment color paste, fully stirring and uniformly mixing, vacuumizing, uniformly coating the front surface of release paper to serve as a surface layer, wherein the coating thickness of a surface layer sizing agent layer is 0.15 mm; then adding 0.8 part of Silok 8030F, 1.5 parts of SY-3520, 1.0 part of 2794, 0.5 part of HYC-100, 0.12 part of BF-2010 and 1.2 parts of U-605 into 40 parts of Tekspros 5215 and 60 parts of JF-PDY-847HY mixed aqueous resin, adding 10 parts of pigment color paste, fully stirring and uniformly mixing, vacuumizing, uniformly coating on a surface layer to prepare a middle layer, wherein the coating thickness of a slurry layer of the middle layer is 0.15 mm; and (3) drying at the speed of 15m/min under the conditions of gradient temperature rise of 80-140 ℃, air blast of 30HZ and air induction of 40 HZ.
And secondly, adding 50 parts of AL-2020B and 120 parts of AL-2020A into A, B material storage tanks corresponding to production equipment respectively, conveying the A, B material which is uniformly stirred to a mixing head according to a set proportion by adjusting a metering pump, pouring the material on the formed middle layer while quickly mixing at the rotating speed of 4000r/min, and preparing the adhesive layer with the scraping thickness of 0.32 mm.
And then, drying the bonding layer at the temperature of 100 ℃ for 0.8min, attaching 1.0mm of Sanyo regenerated fiber base cloth, and laminating to be 0.75mm to obtain a polyurethane synthetic leather semi-finished product.
And finally, curing at high temperature, peeling and bundling at 135 ℃ for 8min, thus obtaining the environment-friendly slow-resilience polyurethane synthetic leather for sofa furniture, which has the advantages of excellent environment-friendliness, good durability, soft hand feeling, strong skin feeling and excellent hydrolysis resistance.
The relevant characteristics of the above examples 1 to 3 are as follows, which show that the polyurethane synthetic leather prepared by the invention has the advantages of excellent environmental protection performance, good durability, soft hand feeling, strong skin-friendly feeling, super-strong wear resistance (meeting the Weishibo detection and the Mardin Darlian detection)), simple and efficient production process, environmental protection and capability of meeting the market demand.
Method for measuring softness of 20% flat ring of standard HGT3053 rubber or plastic coated fabric for softness detection
Claims (10)
1. The environment-friendly slow-rebound polyurethane synthetic leather for sofa furniture sequentially comprises a surface layer, a middle layer, a solvent-free bonding layer and base cloth from top to bottom; the method is characterized in that: the bonding layer consists of an A component containing-OH and a B component containing isocyanate groups, wherein the molar ratio of-NCO in the B component to-OH in the A component is 0.90-0.96;
the component A is prepared from the following raw materials in parts by weight:
88-96 parts of polyether polycarbonate copolymerization type dihydric alcohol;
4-12 parts of polyether triol;
0.02-0.06 part of inhibition type catalyst;
0-1 part of monohydroxy silicone oil;
0-1.5 parts of double-end hydroxyl silicone oil;
1-5 parts of a viscosity regulator;
0-1.5 parts of light/heat stabilizer;
15-50 parts of a filler.
2. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 1, wherein: the light/heat stabilizer is an ultraviolet absorber, a hindered amine light stabilizer or an antioxidant, when the main antioxidant and the auxiliary antioxidant are added simultaneously, the mass ratio of the main antioxidant to the auxiliary antioxidant is 10:1-5:1, and the filler is one or more of aluminum hydroxide, calcium carbonate and MCA.
3. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 1, wherein: the component B is diphenyl methylene diisocyanate, 4，Diphenylmethane diisocyanate, bisOne or more of phenyl methane diisocyanate and polyphenyl polymethylene polyisocyanate.
4. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 1, wherein: the surface layer comprises the following components in parts by weight:
100 parts of waterborne polyurethane resin;
0.5-1.5 parts of leveling wetting agent;
0.4-2 parts of water-based wear-resistant auxiliary agent;
0.8-2 parts of a curing agent;
0.3-1.2 parts of a hand feeling agent;
1-1.6 parts of a thickening agent;
1-8 parts of a silicon acrylic acid auxiliary agent;
defoaming agent 0.1-0.15
3-10 parts of pigment color paste.
5. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 4, wherein: the waterborne polyurethane resin is prepared by mixing Leasys 3250 and PU-209-7 according to the weight ratio of 1.5 (1-1.5), and the curing agent is one or more of aziridine, polycarbodiimide and blocked isocyanate.
6. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 1, wherein: the intermediate layer comprises the following raw materials in parts by weight:
100 parts of waterborne polyurethane resin;
0.3-1.0 part of leveling wetting agent;
0.4-2 parts of water-based wear-resistant auxiliary agent;
0.5-1.5 parts of curing agent;
0.6-1.2 parts of thickening agent;
0.1-0.15% of defoaming agent;
3-10 parts of pigment color paste.
7. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 6, wherein: the waterborne polyurethane resin is formed by mixing Tekspros 5215 and JF-PDY-847HY according to the weight ratio of 1 (1-1.5).
8. The environment-friendly polyurethane synthetic leather for slow rebound sofa furniture as claimed in claim 1, wherein: the base cloth is a Sanyo regenerated fiber base cloth which is composed of regenerated fibers and all cotton woven cloth according to the weight ratio of 3-4:2, the thickness of the base cloth is 1.0 +/-0.1 mm, and the gram weight of the base cloth is 320 +/-20 g/cm2。
9. The method for preparing the polyurethane synthetic leather for the environment-friendly slow rebound sofa furniture, as set forth in any one of claims 1 to 8, is characterized in that: the method comprises the following steps:
(1) fully stirring and uniformly mixing the surface layer slurry, vacuumizing, uniformly coating and scraping the surface layer slurry on the front surface of the release paper to be used as a surface layer, fully stirring and uniformly mixing the intermediate layer slurry, vacuumizing, and uniformly coating and scraping the intermediate layer slurry on the surface layer to obtain an intermediate layer;
(2) respectively adding the component A and the component B into a material storage tank, conveying the mixture into a machine head mixing cavity through a metering pump, blanking while mixing at a high speed, coating the mixture on the middle layer, and heating for reaction to obtain a bonding layer;
(3) adhering base cloth to the bonding layer with proper viscosity, drying and curing to obtain a polyurethane synthetic leather semi-finished product;
(4) and (4) rolling the polyurethane synthetic leather semi-finished product prepared in the step (3), and peeling off release paper to obtain a synthetic leather finished product.
10. The method for preparing the soft solvent-free flame-retardant polyurethane synthetic leather according to claim 9, wherein the method comprises the following steps:
the coating thickness of the surface layer and the middle layer slurry layer in the step (1) is 0.1-0.15mm, under the condition of gradient temperature rise of 80-140 ℃, air is blown for 30HZ, air is induced for 40HZ, and the vehicle speed is 8-15 m/min;
in the step (2), the mixing and stirring speed of the A, B materials is 3500-;
the drying temperature in the step (3) is 130-135 ℃, the curing time is 4-8min, and the lamination gap when the base cloth is attached is 75-82% of the thickness of the base cloth.
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| CN116143994A (en) * | 2022-12-29 | 2023-05-23 | 广州海豚新材料有限公司 | Aqueous organosilicon modified polyurethane dispersoid, preparation method thereof, synthetic leather surface layer containing aqueous organosilicon modified polyurethane dispersoid and luggage leather |
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Application publication date: 20210223 |