CN115418865B - Environment-friendly microfiber leather and processing method and application thereof - Google Patents
Environment-friendly microfiber leather and processing method and application thereof Download PDFInfo
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- CN115418865B CN115418865B CN202211083973.7A CN202211083973A CN115418865B CN 115418865 B CN115418865 B CN 115418865B CN 202211083973 A CN202211083973 A CN 202211083973A CN 115418865 B CN115418865 B CN 115418865B
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- aqueous polyurethane
- layer
- polyurethane slurry
- far infrared
- ceramic powder
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- 229920001410 Microfiber Polymers 0.000 title claims abstract description 103
- 239000003658 microfiber Substances 0.000 title claims abstract description 103
- 239000010985 leather Substances 0.000 title claims abstract description 86
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 75
- 239000010410 layer Substances 0.000 claims abstract description 75
- 239000000843 powder Substances 0.000 claims abstract description 73
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000002346 layers by function Substances 0.000 claims abstract description 24
- 239000002344 surface layer Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000004814 polyurethane Substances 0.000 claims description 138
- 229920002635 polyurethane Polymers 0.000 claims description 137
- 239000002002 slurry Substances 0.000 claims description 115
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 46
- 239000004744 fabric Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 20
- 239000004745 nonwoven fabric Substances 0.000 claims description 16
- 239000004698 Polyethylene Substances 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000004513 sizing Methods 0.000 claims description 11
- 239000002562 thickening agent Substances 0.000 claims description 10
- 238000004049 embossing Methods 0.000 claims description 9
- 238000005470 impregnation Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000010345 tape casting Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000009998 heat setting Methods 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 82
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 51
- 239000004408 titanium dioxide Substances 0.000 abstract description 24
- 239000000126 substance Substances 0.000 abstract description 14
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011941 photocatalyst Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 17
- 239000002585 base Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 239000011521 glass Substances 0.000 description 13
- 239000000835 fiber Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000005507 spraying Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229910052454 barium strontium titanate Inorganic materials 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 210000004207 dermis Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- 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
- D06N3/0088—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 directly applying the resin
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention provides environment-friendly microfiber leather, a processing method and application thereof, and relates to the technical field of water-based microfiber leather. The environment-friendly microfiber leather comprises microfiber Bei Siceng and a dry layer which is arranged on a microfiber base layer in a laminated mode, wherein the dry layer comprises a bottom sealing layer, a hand feeling layer and a surface layer; the microfiber bass layer includes a first functional layer and a second functional layer. The first functional layer, the second functional layer and the dry layer comprise far infrared ceramic powder and titanium dioxide. The far infrared ceramic powder has large surface area and can adsorb substances such as toluene, sulfide, formaldehyde and the like in the air; titanium dioxide is used as a photocatalyst, and can be used for photolyzing substances such as toluene, sulfide, formaldehyde and the like, reducing harmful substances in the air and purifying the air. The environment-friendly microfiber leather provided by the invention can purify air while finishing basic performance, and is suitable for wide popularization and use.
Description
Technical Field
The invention relates to the technical field of water-based microfiber leather, in particular to environment-friendly microfiber leather and a processing method and application thereof.
Background
The existing furniture leather mainly has three main types: the first type is PU leather, PVC leather and other materials, the service life is short, peeling, membrane rupture and other problems are easy to occur, and the durability is poor. The second category is leather products, and the leather production process is easy to have metal chromium ion residues and environmental pollution, and has certain influence on human bodies and the environment. The third category is common microfiber leather products, which have good wear resistance, acid and alkali resistance, hydrolysis resistance, hygroscopicity and comfort, and stronger color fastness and texture.
The existing microfiber leather has perfect functions, but with the continuous improvement of requirements of people on household environments, the indoor air quality is more and more valued. The invention provides a special furniture leather for improving indoor air and enriching functions of the existing furniture leather, wherein substances such as toluene, sulfide, formaldehyde and the like in the indoor air can harm the health of people.
Disclosure of Invention
The invention aims to provide environment-friendly microfiber leather so as to solve the technical problem that the existing water-based microfiber leather cannot purify substances such as toluene, sulfide and formaldehyde in indoor air.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
the first aspect of the invention provides an environment-friendly microfiber leather, which comprises microfiber Bei Siceng and a dry layer arranged on a microfiber base layer;
the microfiber bass layer comprises a first functional layer and a second functional layer;
The dry method layer comprises a bottom sealing layer, a hand feeling layer and a surface layer which are arranged in a stacked manner;
The first functional layer, the second functional layer and the dry layer all comprise far infrared ceramic powder and titanium dioxide.
Optionally, the microfiber bass layer is processed by heat-set non-woven fabrics.
Preferably, the thickness of the nonwoven fabric after heat setting is 1.3mm-2.8mm.
Preferably, the first functional layer and the second functional layer further comprise aqueous polyurethane.
Preferably, the titanium dioxide is nanoscale titanium dioxide.
Preferably, the far infrared ceramic powder includes at least two of silica, aluminum oxide, zirconium oxide, magnesium oxide, calcium oxide, barium titanate, strontium titanate, and calcium titanate.
The second aspect of the invention provides a processing method of the environment-friendly microfiber leather, which comprises the following steps:
step A, carrying out knife coating on one surface of the heat-set non-woven fabric, and then carrying out overall impregnation and solidification to obtain microfiber leather grey cloth;
Step B, removing polyethylene in the microfiber leather grey cloth to obtain microfiber Bei Siceng, and cleaning, drying, softening and kneading the microfiber bass layer to obtain the environment-friendly microfiber leather base cloth;
And C, forming a dry layer on the environment-friendly microfiber leather base cloth to obtain the environment-friendly microfiber leather.
Alternatively, the slurry used for blade coating is a first aqueous polyurethane slurry.
Preferably, the viscosity of the first aqueous polyurethane slurry is 2000cps to 50000cps.
Preferably, the first aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide and aqueous polyurethane.
Preferably, the total weight of the far infrared ceramic powder and the nano titanium dioxide is 5-40% of the weight of the aqueous polyurethane.
Preferably, the mass ratio of the far infrared ceramic powder to the nano titanium dioxide is 1.5-2:1.
Optionally, the slurry used for impregnation is a second aqueous polyurethane slurry.
Preferably, in the second aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 10-20% of the weight of the aqueous polyurethane.
Preferably, the viscosity of the second aqueous polyurethane slurry is 500cps to 20000cps.
Optionally, in the step B, the toluene is used for soaking the microfiber leather grey cloth to dissolve and separate the polyethylene in the grey cloth, and then the polyethylene in the microfiber leather grey cloth is removed.
Preferably, the toluene temperature is 75 ℃ to 95 ℃.
Alternatively, the third aqueous polyurethane slurry, the fourth aqueous polyurethane slurry, and the fifth aqueous polyurethane slurry are used to form the back cover layer, the feel layer, and the surface layer, respectively.
Preferably, the third aqueous polyurethane slurry and the fourth aqueous polyurethane slurry each independently comprise far infrared ceramic powder, nano titanium dioxide, aqueous polyurethane, a thickener and a curing agent.
Preferably, the viscosity of the third aqueous polyurethane slurry is 500cps to 10000cps.
Preferably, the sizing amount for forming the back cover layer is 170g/m 2-270g/m2.
Optionally, in the third aqueous polyurethane slurry and the fourth aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 15% -30% of the weight of the aqueous polyurethane.
Preferably, the viscosity of the fourth aqueous polyurethane slurry is 500cps to 15000cps.
Preferably, the sizing amount for forming the hand layer is 200g/m 2-300g/m2.
Preferably, the fifth aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide, aqueous polyurethane, a handfeel agent and a thickening agent.
Preferably, in the fifth aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 5% -15% of the weight of the aqueous polyurethane.
Preferably, the viscosity of the fifth aqueous polyurethane slurry is 300cps to 1000cps.
Preferably, the sizing amount forming the surface layer is 100g/m 2-200g/m2.
Optionally, embossing and/or printing processes performed after the environmentally friendly microfiber leather is obtained.
Preferably, the embossing temperature is 120 ℃ to 130 ℃.
The third aspect of the invention provides the application of the environment-friendly microfiber leather in household products.
Compared with the prior art, the invention has at least the following beneficial effects:
The environment-friendly microfiber leather provided by the invention has the advantages that the first functional layer, the second functional layer and the dry layer comprise far infrared ceramic powder and titanium dioxide, and the far infrared ceramic powder has a large surface area and can adsorb substances such as toluene, sulfide and formaldehyde in the air; titanium dioxide is used as a photocatalyst, and can be used for photolyzing substances such as toluene, sulfide, formaldehyde and the like, reducing harmful substances in the air and purifying the air. The far infrared ceramic powder and the titanium dioxide are matched with each other to capture and decompose harmful substances in the air, thereby improving the air quality and reducing the harm. The environment-friendly microfiber leather provided by the invention can purify air while finishing basic performance, and is suitable for wide popularization and use.
The processing method of the environment-friendly microfiber leather provided by the invention has the advantages of continuous process, environment-friendly material, high production efficiency and suitability for industrial production.
The application of the environment-friendly microfiber leather provided by the invention enriches the functions of household products, expands the application range and provides better choices for consumers.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to embodiments and examples, but it will be understood by those skilled in the art that the following embodiments and examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The environment-friendly microfiber leather provided by the first aspect of the invention comprises microfiber Bei Siceng and a dry layer arranged on a microfiber base layer;
the microfiber bass layer comprises a first functional layer and a second functional layer;
The dry method layer comprises a bottom sealing layer, a hand feeling layer and a surface layer which are arranged in a stacked manner;
The first functional layer, the second functional layer and the dry layer all comprise far infrared ceramic powder and titanium dioxide.
The environment-friendly microfiber leather provided by the invention has the advantages that the first functional layer, the second functional layer and the dry layer comprise far infrared ceramic powder and titanium dioxide, and the far infrared ceramic powder has a large surface area and can adsorb substances such as toluene, sulfide and formaldehyde in the air; titanium dioxide is used as a photocatalyst, and can be used for photolyzing substances such as toluene, sulfide, formaldehyde and the like, reducing harmful substances in the air and purifying the air. The far infrared ceramic powder and the titanium dioxide are matched with each other to capture and decompose harmful substances in the air, thereby improving the air quality and reducing the harm. The environment-friendly microfiber leather provided by the invention can purify air while finishing basic performance, and is suitable for wide popularization and use.
The microfiber bass layer is obtained by processing heat-set non-woven fabrics.
Preferably, the thickness of the nonwoven fabric after heat setting is 1.3mm-2.8mm.
In some embodiments of the invention, the nonwoven is typically, but not limited to, islands-in-the-sea nonwoven, made using PA6 and polyethylene, and heat set to a thickness of between 1.3mm and 2.8 mm.
Optionally, the first functional layer and the second functional layer further comprise aqueous polyurethane.
The superfine fiber synthetic leather is a composite material composed of superfine fibers and polyurethane. The superfine fiber has a three-dimensional woven structure, plays a role in framework and support, and the polyurethane forms a microporous structure among the fibers, has a structure similar to leather, and increases the elasticity and the handfeel of the base cloth. The water polyurethane is used as a carrier of far infrared ceramic powder and titanium dioxide. The aqueous polyurethane is used as a component part of the microfiber leather to replace the traditional solvent polyurethane, is an important component part of the microfiber leather, and provides the microfiber leather with plump hand feeling, air permeability, moisture permeability and compression elasticity.
Preferably, the titanium dioxide is nanoscale titanium dioxide.
Preferably, the far infrared ceramic powder includes at least two of silica, aluminum oxide, zirconium oxide, magnesium oxide, calcium oxide, barium titanate, strontium titanate, and calcium titanate.
The second aspect of the invention provides a processing method of the environment-friendly microfiber leather, which comprises the following steps:
step A, carrying out knife coating on one surface of the heat-set non-woven fabric, and then carrying out overall impregnation and solidification to obtain microfiber leather grey cloth;
Step B, removing polyethylene in the microfiber leather grey cloth to obtain microfiber Bei Siceng, and cleaning, drying, softening and kneading the microfiber bass layer to obtain the environment-friendly microfiber leather base cloth;
And C, forming a dry layer on the environment-friendly microfiber leather base cloth to obtain the environment-friendly microfiber leather.
The processing method of the environment-friendly microfiber leather provided by the invention has the advantages of continuous process, environment-friendly material, high production efficiency and suitability for industrial production.
A first aqueous polyurethane slurry is coated on one surface of the non-woven fabric after heat setting, and the first aqueous polyurethane slurry is permeated to 1/3-2/3 of the thickness of the non-woven fabric through repeated extrusion; and then impregnating the second aqueous polyurethane slurry to enable the second aqueous polyurethane slurry to occupy the rest positions in the non-woven fabric. And then solidifying to obtain the microfiber leather grey cloth with different density gradients on the upper layer and the lower layer.
Alternatively, the slurry used for blade coating is a first aqueous polyurethane slurry.
And (3) carrying out knife coating on one surface of the heat-set non-woven fabric by using the first aqueous polyurethane slurry, and forming an upper compact layer after knife coating.
Preferably, the viscosity of the first aqueous polyurethane slurry is 2000cps to 50000cps.
It should be noted that the "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying the number of technical features indicated in the present invention.
In the invention, the viscosity of the first aqueous polyurethane slurry, the second aqueous polyurethane slurry and the third aqueous polyurethane slurry can be adjusted by adding a thickening agent or water, and the viscosity values refer to the viscosity values at the temperature of 25 ℃.
In the invention, in the first aqueous polyurethane slurry, the second aqueous polyurethane slurry and the third aqueous polyurethane slurry, in order to ensure the dispersing effect of the far infrared ceramic powder and the nano titanium dioxide, an ultrasonic dispersing device can be used for dispersing.
When the viscosity of the first aqueous polyurethane slurry is smaller than 2000cps during blade coating, the slurry can permeate too fast due to the low viscosity and high fluidity, so that the sizing amount is insufficient, and the crease of the finished product becomes thick; when the viscosity of the first aqueous polyurethane slurry is more than 50000cps, the slurry is too high in viscosity and too slow in permeation, so that the ideal permeation depth cannot be achieved, and quality problems such as coarse wrinkles and peeling can occur in subsequent processing.
In some embodiments of the present invention, the viscosity of the first aqueous polyurethane slurry is typically, but not limited to, 2000cps, 3000cps, 5000cps, 8000cps, 10000cps, 3000cps, or 5000cps.
Preferably, the first aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide and aqueous polyurethane.
Preferably, the total weight of the far infrared ceramic powder and the nano titanium dioxide is 5-40% of the weight of the aqueous polyurethane.
When the total weight of the far infrared ceramic powder and the nano titanium dioxide is less than 5% of the weight of the aqueous polyurethane, the effect of absorbing harmful substances such as formaldehyde and the like can not be achieved, and the effect of purifying air can not be achieved; when the total weight of the far infrared ceramic powder and the nano titanium dioxide is more than 40% of the weight of the aqueous polyurethane, the stirring is uneven, the coagulation phenomenon is easy to occur, and the dispersion cannot be fully carried out; and the continuity and film forming effect of the sizing agent can be influenced, and physical performance indexes such as hand feeling, breaking, tearing strength and the like of the final product are influenced.
In some embodiments of the present invention, the total weight of the far infrared ceramic powder and the nano-titania is typically, but not limited to, 5%, 10%, 15%, 20%, 25%, 30%, 35%, or 40% by weight of the aqueous polyurethane.
Preferably, the mass ratio of the far infrared ceramic powder to the nano titanium dioxide is 1.5-2:1.
When the mass ratio of the far infrared ceramic powder to the nano titanium dioxide is lower than 1.5:1, the far infrared ceramic powder has the function of physical adsorption, the titanium dioxide is decomposed under the action of light, and the purifying efficiency is low; when the mass ratio of the far infrared ceramic powder to the nano titanium dioxide is higher than 2:1, excessive physical adsorption is carried out, and the titanium dioxide cannot be further decomposed after the decomposition is completed, so that the air purifying effect can be reduced.
In some embodiments of the invention, the mass ratio of far infrared ceramic powder to nano-titania is typically, but not limited to, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, or 2:1.
Optionally, the slurry used for impregnation is a second aqueous polyurethane slurry.
Preferably, the viscosity of the second aqueous polyurethane slurry is 500cps to 20000cps.
When the viscosity of the second aqueous polyurethane slurry is less than 500cps during impregnation, excessive migration is caused in the curing process because of the excessively low viscosity and large fluidity, so that the distribution uniformity of polyurethane in the base cloth is influenced, and the hand feeling of a finished product is influenced; when the viscosity of the second aqueous polyurethane slurry is more than 20000cps, the impregnation is difficult to achieve due to the too high viscosity, the combination with the doctor-blading resin is affected, the layering of the finished product is caused, and the folding effect is affected.
In some embodiments of the present invention, the viscosity of the second aqueous polyurethane slurry is typically, but not limited to, 500cps, 1000cps, 3000cps, 5000cps, 8000cps, 10000cps, 15000cps, or 20000cps.
Preferably, in the second aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 10-20% of the weight of the aqueous polyurethane.
In the step B, firstly, toluene is used for soaking the microfiber leather grey cloth to dissolve and separate polyethylene in the grey cloth, and the polyethylene in the microfiber leather grey cloth is removed through repeated extrusion by a roller;
repeatedly extruding the microfiber leather grey cloth impregnated with toluene by using a roller to dissolve and separate the sea component low-density polyethylene in the sea-island fiber, separating the island component in the sea-island fiber into microfiber, and removing the polyethylene in the grey cloth.
Preferably, the toluene temperature is 75 ℃ to 95 ℃.
In some embodiments of the invention, the toluene is typically at a temperature of, but not limited to, 75 ℃, 80 ℃, 85 ℃, 90 ℃, or 95 ℃.
And (3) cleaning and drying the grey cloth, and performing softening and skin kneading treatment to obtain the environment-friendly microfiber leather base cloth, wherein the base cloth has a compact surface layer and a loose dermis gradient at the lower layer. It is necessary to spray the side of the base fabric having the surface densified layer.
Alternatively, the third aqueous polyurethane slurry, the fourth aqueous polyurethane slurry, and the fifth aqueous polyurethane slurry are used to form the back cover layer, the feel layer, and the surface layer, respectively.
Preferably, the third aqueous polyurethane slurry and the fourth aqueous polyurethane slurry each independently comprise far infrared ceramic powder, nano titanium dioxide, aqueous polyurethane, a thickening agent and a curing agent;
The effect of the back cover layer is that the bonding layer of dry layer and basic cloth, the thick liquids have better adhesive force, can be bonded together with microfiber leather, the thick liquids can not be too deep into the basic cloth on one hand, on the other hand, have good film forming property, ensure the bonding property with the follow-up thick liquids, preferably, the viscosity of the third aqueous polyurethane thick liquids is 500cps-10000cps.
In some embodiments of the present invention, the viscosity of the third aqueous polyurethane slurry is typically, but not limited to, 500cps, 1000cps, 6000cps, 7000cps, 8000cps, 9000cps, or 10000cps.
Preferably, the sizing amount for forming the back cover layer is 170g/m 2-270g/m2.
Optionally, in the third aqueous polyurethane slurry and the fourth aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 15% -30% of the weight of the aqueous polyurethane.
In some embodiments of the present invention, the weight of the far infrared ceramic powder and the nano-titania in the third aqueous polyurethane slurry is typically, but not limited to, 15%, 20%, 25% or 30% of the weight of the aqueous polyurethane.
The fourth aqueous polyurethane slurry forms a hand feeling layer and also becomes an intermediate layer, and has the main functions of improving the hand feeling of a product, increasing the elasticity of the product, affecting the physical property index of the product and also having higher stability, and preferably, the viscosity of the fourth aqueous polyurethane slurry is 500cps-15000cps.
Preferably, the sizing amount for forming the hand layer is 200g/m 2-300g/m2.
Preferably, the fifth aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide, aqueous polyurethane, a handfeel agent and a thickening agent.
Preferably, in the fifth aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 5% -15% of the weight of the aqueous polyurethane.
The fifth aqueous polyurethane slurry is a surface layer and mainly used for improving the surface touch feeling, glossiness and the like of the product.
Preferably, the viscosity of the fifth aqueous polyurethane slurry is 300cps to 1000cps.
Preferably, the sizing amount forming the surface layer is 100g/m 2-200g/m2.
The weight ratio of the far infrared ceramic powder to the nano titanium dioxide in the dry layer is different, the viscosity of the spraying bottom layer and the middle layer slurry is high and the spraying bottom layer and the middle layer slurry are in fit with the base cloth, the influence on the surface effect is not great, the surface layer needs a certain color brilliance and glossiness, the addition amount is properly reduced, and the surface color, glossiness and texture effect can be ensured. The first aqueous polyurethane is a scraping coating, the addition amount is highest, slurry is scraped into a non-woven fabric through a scraper, the addition proportion of the second aqueous polyurethane is reduced, the impregnation process is carried out through a roller for extrusion, and the permeation of the slurry is affected by the excessive addition amount. The addition amount of each procedure is determined by repeated experiments, and the optimal proportion is comprehensively determined from aspects of production operation, cost, product performance, processing technology and the like.
It should be noted that the coating modes of the back cover layer, the hand feeling layer and the surface layer are not limited, and roll coating or spray coating can be selected according to practical situations.
Optionally, embossing and/or printing processes performed after the environmentally friendly microfiber leather is obtained.
Preferably, the embossing temperature is 120 ℃ to 130 ℃.
The third aspect of the invention provides the application of the environment-friendly microfiber leather in household products.
The application of the environment-friendly microfiber leather provided by the invention enriches the functions of household products, expands the application range and provides better choices for consumers.
The invention is further illustrated by the following specific examples and comparative examples, but it should be understood that these examples are for the purpose of illustration only and are not to be construed as limiting the invention in any way. The raw materials used in the examples and comparative examples of the present invention were conducted under conventional conditions or conditions recommended by the manufacturer, without specifying the specific conditions. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
The embodiment provides an environment-friendly microfiber leather, which is obtained through the following steps:
1. Preparing a first aqueous polyurethane slurry: a total of 300kg of far infrared ceramic powder and nano titanium dioxide are added into 1000kg of aqueous polyurethane, wherein the total amount of the far infrared ceramic powder is 190kg, and the nano titanium dioxide is 110kg. The far infrared ceramic powder is a mixture of silicon dioxide and aluminum oxide, the model is far infrared ceramic powder 009, and the manufacturer is Shijia shun Qian new material technology Co., ltd; the nanometer titanium dioxide DXN-RT50 is manufactured by Darcy concentrated nanometer technology (Changzhou) Co.
The far infrared ceramic powder and the nanometer titanium dioxide powder are uniformly dispersed in the slurry by utilizing an ultrasonic disperser, and the viscosity after uniform mixing is 7000cps.
Preparing a second aqueous polyurethane slurry: taking part of the first aqueous polyurethane slurry, and adjusting the viscosity of the first aqueous polyurethane slurry to 2000cps by using water.
Preparing a third aqueous polyurethane slurry: the third aqueous slurry is 100kg of aqueous polyurethane slurry for a dry-process back cover layer, the thickening agent is 1kg, the curing agent is 3kg, the far infrared ceramic powder and the nano-scale titanium dioxide are 30kg (wherein the far infrared ceramic powder is 18kg and the nano-scale titanium dioxide is 12 kg), and the viscosity is adjusted to 8000cps.
Preparing a fourth aqueous polyurethane slurry: the fourth aqueous slurry is 100kg of aqueous polyurethane slurry for a dry hand feeling layer, 1.2kg of thickening agent, 3kg of curing agent, 30kg of far infrared ceramic powder and nano-scale titanium dioxide (wherein 18kg of far infrared ceramic powder and 12kg of nano-scale titanium dioxide), and the viscosity is adjusted to 8000cps.
Preparing a fifth aqueous polyurethane slurry: the fifth aqueous slurry is 100kg of aqueous polyurethane slurry for a dry surface layer, the thickener is 0.8kg, the handfeel agent is 3kg, the far infrared ceramic powder and the nano titanium dioxide are 10kg (wherein the far infrared ceramic powder is 6kg and the nano titanium dioxide is 4 kg), and the viscosity is adjusted to 400cps.
2. The nonwoven fabric prepared by using PA6 and polyethylene has a thickness of 2.3mm, and the first aqueous polyurethane slurry is knife-coated on the front surface with a heat-setting thickness of 1.8mm to form an upper compact layer. And (3) impregnating the non-woven fabric forming the upper compact layer, using a second aqueous polyurethane slurry for impregnation, penetrating the slurry into the part which is not knife-coated inside to obtain a lower loose layer, and curing to obtain the aqueous microfiber leather grey cloth.
3. The grey cloth is subjected to dipping treatment by hot toluene at 85 ℃, and then repeatedly extruded by a roller, so that the sea component low-density polyethylene in the sea-island fiber is dissolved and separated, the island component separated fiber in the sea-island fiber is changed into superfine fiber, and the superfine fiber is washed and dried, and then is subjected to softening and skin kneading treatment to obtain the base cloth. The surface of one side of the base cloth is provided with a surface compact layer, and the lower layer of the base cloth is loose and provided with microfiber leather with dermis gradient.
4. And then spraying third aqueous polyurethane slurry on the surface with the compact layer, spraying the slurry on the surface of the base cloth by using spraying equipment, continuously spraying for three times to respectively form a back cover layer, a hand feeling layer and a surface layer, embossing after the three times of spraying, controlling the temperature on the embossing equipment to be 125 ℃, and embossing to obtain the environment-friendly microfiber leather with patterns.
Example 2
The present embodiment provides an environment-friendly microfiber leather, which is different from embodiment 1 in that the viscosity of the first aqueous polyurethane slurry is 5000cps, and the rest steps are the same as embodiment 1, and are not described herein.
Example 3
The embodiment provides an environment-friendly microfiber leather, which is different from embodiment 1 in that the viscosity of the first aqueous polyurethane slurry is 50000cps, and the rest steps are the same as embodiment 1, and are not repeated here.
Example 4
The present embodiment provides an environment-friendly microfiber leather, which is different from embodiment 1 in that 180kg of far infrared ceramic powder and 120kg of nano titanium dioxide in the first aqueous polyurethane slurry are the same as embodiment 1, and the rest steps are not repeated here.
Example 5
The present embodiment provides an environment-friendly microfiber leather, which is different from embodiment 1 in that in the first aqueous polyurethane slurry, 200kg of far infrared ceramic powder and 100kg of nano titanium dioxide are the same as embodiment 1, and the rest steps are not repeated here.
Example 6
The present embodiment provides an environment-friendly microfiber leather, which is different from embodiment 1 in that 180kg of far infrared ceramic powder and 120kg of nano titanium dioxide in the first aqueous polyurethane slurry are the same as embodiment 1, and the rest steps are not repeated here.
Example 7
The embodiment provides environment-friendly microfiber leather, which is different from embodiment 1 in that in the first aqueous polyurethane slurry, 400kg of far infrared ceramic powder and 140kg of nano titanium dioxide are counted together. The other steps are the same as those of example 1, and will not be described again here.
Example 8
The embodiment provides an environment-friendly microfiber leather, which is different from embodiment 1 in that in the first aqueous polyurethane slurry, 150kg of far infrared ceramic powder and 54kg of nano titanium dioxide are counted together. The other steps are the same as those of example 1, and will not be described again here.
Comparative example 1
The present comparative example provides a microfiber leather, which is different from example 1 in that no far infrared ceramic powder and nano titanium dioxide are added into the aqueous polyurethane slurry, and the rest steps and methods are the same as example 1, and are not repeated here.
Comparative example 2
The present comparative example provides a microfiber leather, which is different from example 1 in that only far infrared ceramic powder is added to the aqueous polyurethane slurry, nano titanium dioxide is not added, and the rest steps and methods are the same as example 1, and are not repeated here.
Comparative example 3
The present comparative example provides a microfiber leather, which is different from example 1 in that no far infrared ceramic powder is added to the aqueous polyurethane slurry, only nano titanium dioxide is added, and the rest steps and methods are the same as example 1, and are not repeated here.
Test example 1
The microfiber leathers obtained in examples 1 to 8 and comparative examples 1 to 3 were subjected to performance test.
The thickness was measured according to the specification of QB/T3812.4-1999, the breaking strength, breaking elongation and tearing strength were measured according to the specification of QB/T3812.5-1999, and the peel strength was measured according to the specification of GB/T8949-1995.
The data obtained from the test are shown in table 1.
Table 1 microfiber leather performance data sheet
As can be seen from Table 1, the breaking strength, tearing strength and elongation at break of the product are not obviously different, the change is about 5N, and the increase of the purification function has no influence on the physical properties of the product.
Test example 2
Formaldehyde purification performance tests were performed on the microfiber leathers obtained in examples 1 to 8 and comparative examples 1 to 3:
The microfiber leather was placed in a transparent glass box with ceramic separator and the glass box was sealed. The ceramic partition board is provided with small holes, and a microfiber leather sample is placed on the ceramic partition board and is about 10cm away from the bottom of the glass box. The center of the bottom of the glass box is provided with a groove for containing formaldehyde or formaldehyde solution. The position that glass case top (lid) corresponds with the bottom recess is provided with formaldehyde and adds the mouth, is provided with formaldehyde and adds the pipe in the glass incasement and add between mouth and the bottom recess, adds the lower extreme of pipe and is close to the bottom recess, and the upper end bonds on the glass incasement wall around adding the mouth. The side wall of the glass box is provided with a gas sampling port, and the gas sampling port is connected with a formaldehyde concentration tester. Specifically, the gas sampling port is connected with a pump suction port of the formaldehyde concentration tester through a pipeline. And a heating device is arranged at the position below the glass box corresponding to the bottom groove.
During testing, after formaldehyde is added into the bottom groove through the formaldehyde adding port, the adding port is sealed by a sealing plug. And (3) starting a heating device below the glass box to volatilize formaldehyde, immediately starting a formaldehyde concentration tester, and sampling and testing the formaldehyde concentration in the gas in the glass box. Then, after 12 hours, the formaldehyde concentration tester is opened, and the formaldehyde concentration in the gas in the glass box is sampled and tested, and the obtained results are shown in table 2.
Table 2 formaldehyde removal effect data sheet
As can be seen from Table 2, the formaldehyde removal rate of the examples is between 60 and 75 percent, and the comparative example 1 is free from adding far infrared ceramic powder and nano titanium dioxide, and the formaldehyde content is not reduced; the removal rate of comparative example 2 is 23%, the removal rate of formaldehyde of comparative example 3 is 40%, and the comprehensive comparison reduces far infrared ceramic powder or nano-scale titanium dioxide, and the formaldehyde absorption rate is reduced by 50-60%.
Test example 3
Toluene-purifying property test was conducted on the microfiber leathers obtained in examples 1 to 8 and comparative examples 1 to 3. Different from the formaldehyde purification performance test in test example 2, toluene was added into the groove in the bottom center of the glass box, and a toluene concentration tester was used, and the rest of the method and steps were the same as those in test example 2, and will not be described again. The test results are shown in Table 3.
Table 3 toluene removal effect data sheet
As can be seen from Table 3, the toluene absorption rate of the examples was about 35%, the absorption effect was reduced by 50% by adding only 4% of far infrared ceramic powder and only 20% of nano titanium dioxide, and the absorption effect was not affected by adding no far infrared ceramic powder or nano titanium dioxide.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (12)
1. An environment-friendly microfiber leather is characterized by comprising microfiber Bei Siceng and a dry layer arranged on a microfiber bass layer;
the microfiber bass layer comprises a first functional layer and a second functional layer;
The dry method layer comprises a bottom sealing layer, a hand feeling layer and a surface layer which are arranged in a stacked manner;
The first functional layer is obtained by blade coating of first aqueous polyurethane slurry; the second functional layer is obtained by impregnating second aqueous polyurethane slurry;
correspondingly forming a bottom sealing layer, a handfeel layer and a surface layer by using the third aqueous polyurethane slurry, the fourth aqueous polyurethane slurry and the fifth aqueous polyurethane slurry;
The first aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide and aqueous polyurethane;
In the first aqueous polyurethane slurry, the total weight of the far infrared ceramic powder and the nano titanium dioxide is 5-40% of the weight of the aqueous polyurethane, and the mass ratio of the far infrared ceramic powder to the nano titanium dioxide is 1.5-2:1; the viscosity of the first aqueous polyurethane slurry is 2000cps to 50000cps;
the second aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide and aqueous polyurethane;
Wherein, in the second aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 10-20% of the weight of the aqueous polyurethane; the viscosity of the second aqueous polyurethane slurry is 500cps-20000cps;
The third aqueous polyurethane slurry and the fourth aqueous polyurethane slurry respectively and independently comprise far infrared ceramic powder, nano titanium dioxide, aqueous polyurethane, a thickening agent and a curing agent;
Wherein, in the third aqueous polyurethane slurry and the fourth aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 15-30% of the weight of the aqueous polyurethane;
The viscosity of the third aqueous polyurethane slurry is 500cps-10000cps, and the viscosity of the fourth aqueous polyurethane slurry is 500cps-15000cps;
the fifth aqueous polyurethane slurry comprises far infrared ceramic powder, nano titanium dioxide, aqueous polyurethane, a handfeel agent and a thickening agent; wherein, in the fifth aqueous polyurethane slurry, the weight of the far infrared ceramic powder and the nano titanium dioxide is 5-15% of the weight of the aqueous polyurethane; the viscosity of the fifth aqueous polyurethane slurry is 300cps-1000cps;
The far infrared ceramic powder is a mixture comprising silicon dioxide and aluminum oxide.
2. The environmentally friendly microfiber leather according to claim 1, wherein the microfiber base layer is processed from heat-set nonwoven fabric.
3. The environmentally friendly microfiber leather according to claim 2, wherein the thickness of the nonwoven fabric after heat setting is 1.3mm to 2.8mm.
4. A method of processing an environmentally friendly microfiber leather according to any one of claims 1 to 3, comprising the steps of:
step A, carrying out knife coating on one surface of the heat-set non-woven fabric, and then carrying out overall impregnation and solidification to obtain microfiber leather grey cloth;
Step B, removing polyethylene in the microfiber leather grey cloth to obtain microfiber Bei Siceng, and cleaning, drying, softening and kneading the microfiber bass layer to obtain the environment-friendly microfiber leather base cloth;
And C, forming a dry layer on the environment-friendly microfiber leather base cloth to obtain the environment-friendly microfiber leather.
5. The method according to claim 4, wherein in the step B, the polyethylene in the raw material is dissolved and separated by impregnating the raw material with toluene, and then the polyethylene in the raw material is removed.
6. The process of claim 5 wherein the toluene is at a temperature of 75 ℃ to 95 ℃.
7. The method of claim 4, wherein the sizing amount for forming the back sheet is 170g/m 2-270g/m2.
8. The process of claim 4, wherein the sizing agent is 200g/m 2-300g/m2.
9. The method according to claim 4, wherein the surface layer is formed with a sizing amount of 100g/m 2-200g/m2.
10. The process of claim 4, further comprising embossing and/or printing after the environmentally friendly microfiber leather is obtained.
11. The process of claim 10, wherein the embossing temperature is 120 ℃ to 130 ℃.
12. Use of the environmentally friendly microfiber leather of any one of claims 1 to 3 or the environmentally friendly microfiber leather processed by the processing method of any one of claims 4 to 11 in household products.
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| CN103981730A (en) * | 2014-05-07 | 2014-08-13 | 安安(中国)有限公司 | Moisture permeable ultrafine fiber synthesis leather for shoes, and making method thereof |
| CN111379172A (en) * | 2019-10-16 | 2020-07-07 | 丹东轻化工研究院有限责任公司 | Preparation method of waterborne polyurethane synthetic leather bass |
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| JP3449892B2 (en) * | 1997-09-24 | 2003-09-22 | 株式会社クラレ | Artificial leather with excellent moisture permeability and deodorant properties |
| KR100460715B1 (en) * | 2002-04-29 | 2004-12-08 | 유영은 | Natural Leather and the Production Method |
| CN206015384U (en) * | 2016-08-08 | 2017-03-15 | 广州市宏伟皮革有限公司 | A kind of imitative woven fabric environmental synthetic leather |
| CN215758215U (en) * | 2021-07-26 | 2022-02-08 | 江苏协孚新材料科技有限公司 | Ecological synthetic leather of super gentle clothing of waterborne |
| CN114318894B (en) * | 2022-01-05 | 2024-09-17 | 禾欣可乐丽超纤皮(嘉兴)有限公司 | Manufacturing method of high-fit infrared health-care microfiber clothing leather base |
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| CN103981730A (en) * | 2014-05-07 | 2014-08-13 | 安安(中国)有限公司 | Moisture permeable ultrafine fiber synthesis leather for shoes, and making method thereof |
| CN111379172A (en) * | 2019-10-16 | 2020-07-07 | 丹东轻化工研究院有限责任公司 | Preparation method of waterborne polyurethane synthetic leather bass |
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