CN114000361A - Artificial leather and preparation method thereof - Google Patents
Artificial leather and preparation method thereof Download PDFInfo
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- CN114000361A CN114000361A CN202010734188.8A CN202010734188A CN114000361A CN 114000361 A CN114000361 A CN 114000361A CN 202010734188 A CN202010734188 A CN 202010734188A CN 114000361 A CN114000361 A CN 114000361A
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000010410 layer Substances 0.000 claims abstract description 178
- 239000004814 polyurethane Substances 0.000 claims abstract description 123
- 239000000843 powder Substances 0.000 claims abstract description 57
- 239000002904 solvent Substances 0.000 claims abstract description 51
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 43
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 43
- 241001330002 Bambuseae Species 0.000 claims abstract description 43
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 43
- 239000011425 bamboo Substances 0.000 claims abstract description 43
- 239000002270 dispersing agent Substances 0.000 claims abstract description 39
- 239000003610 charcoal Substances 0.000 claims abstract description 38
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 24
- 239000002344 surface layer Substances 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 21
- QELSKZZBTMNZEB-UHFFFAOYSA-N propylparaben Chemical compound CCCOC(=O)C1=CC=C(O)C=C1 QELSKZZBTMNZEB-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004902 Softening Agent Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 229920000728 polyester Polymers 0.000 claims abstract description 12
- 235000010232 propyl p-hydroxybenzoate Nutrition 0.000 claims abstract description 12
- 239000004405 propyl p-hydroxybenzoate Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 229960003415 propylparaben Drugs 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims description 35
- 239000002002 slurry Substances 0.000 claims description 35
- 239000003921 oil Substances 0.000 claims description 22
- 150000001450 anions Chemical class 0.000 claims description 21
- 239000003242 anti bacterial agent Substances 0.000 claims description 20
- 239000000839 emulsion Substances 0.000 claims description 20
- 229920001296 polysiloxane Polymers 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000005266 casting Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- -1 polysiloxane Polymers 0.000 claims description 14
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 12
- 229910052731 fluorine Inorganic materials 0.000 claims description 12
- 239000011737 fluorine Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- 229940070527 tourmaline Drugs 0.000 claims description 10
- 229910052613 tourmaline Inorganic materials 0.000 claims description 10
- 239000011032 tourmaline Substances 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000007731 hot pressing Methods 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 229940008099 dimethicone Drugs 0.000 claims description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims 2
- 230000003373 anti-fouling effect Effects 0.000 abstract description 10
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 21
- 238000012360 testing method Methods 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 6
- 229910000413 arsenic oxide Inorganic materials 0.000 description 6
- 239000010985 leather Substances 0.000 description 6
- 229960002594 arsenic trioxide Drugs 0.000 description 5
- KTTMEOWBIWLMSE-UHFFFAOYSA-N diarsenic trioxide Chemical compound O1[As](O2)O[As]3O[As]1O[As]2O3 KTTMEOWBIWLMSE-UHFFFAOYSA-N 0.000 description 5
- 230000005764 inhibitory process Effects 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000003385 bacteriostatic effect Effects 0.000 description 4
- 230000009172 bursting Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000037303 wrinkles Effects 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 244000000010 microbial pathogen Species 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Images
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
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/183—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials the layers are one next to the other
-
- 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
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- 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
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic 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
- D06N3/0086—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
-
- 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
- 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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1671—Resistance to bacteria, mildew, mould, fungi
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
-
- 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
- D06N2211/10—Clothing
- D06N2211/106—Footwear
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses artificial leather and a preparation method thereof, wherein the artificial leather comprises a substrate layer and a surface layer which are sequentially stacked; the base material layer comprises a fabric layer, a bonding layer and a PU layer which are sequentially stacked; the PU layer comprises a first PU layer and a second PU layer which are sequentially stacked, and a surface layer is arranged on one side of the second PU layer, which is far away from the first PU layer; the first PU layer is prepared from the following components in parts by weight: 100 parts of oil-based polyurethane resin, 5-10 parts of polyester fiber, 0.5-1 part of propyl paraben, 0.5-1 part of wear-resisting agent, 0.5-1 part of dispersant A and 100-180 parts of solvent A; the second PU layer is prepared from the following components in parts by weight: 100 parts of oil-based polyurethane resin, 20-50 parts of nano bamboo charcoal powder, 3-10 parts of a softening agent, 0.5-1 part of a dispersing agent B and 100-180 parts of a solvent B. The artificial leather has excellent wear resistance, antibacterial property, crease resistance and flexibility, and good anti-fouling performance.
Description
Technical Field
The invention relates to the technical field of artificial leather, in particular to artificial leather and a preparation method thereof.
Background
Natural leather is widely used for producing daily necessities and industrial products due to its excellent natural characteristics, but with the increase of the world population, the demand of human beings for leather is multiplied, and the demand of people cannot be met by the limited amount of natural leather for a long time. To solve this contradiction, scientists have begun to research and develop artificial leathers several decades ago to meet the growing demand of natural leathers.
The artificial leather is made by foaming or film-coating PVC, PU and the like with different formulas on a textile fabric base or a non-woven fabric base. Artificial leather has been widely used in various fields as a substitute for natural leather. The prior artificial leather mainly has the following problems: 1. the existing artificial antifouling leather has a certain antifouling effect, but the antifouling effect is poor after seven days of constant temperature, constant humidity and aging resistance; 2. in a dark and humid environment, bacteria and mold are often bred on the surface of the existing artificial leather, and the existing technology usually depends on adding arsenic oxide in a formula to realize a bacteriostatic function. However, arsenic oxide belongs to a highly toxic substance, and once the arsenic oxide is improperly operated in the processing and production process, the arsenic oxide can cause damage to the body of an operator; meanwhile, customers may have adverse reactions such as allergy and dermatitis after contacting the artificial leather added with arsenic oxide for a long time. Arsenic oxides have been included in 2008 as a high concern by the european union, requiring imported goods to be restricted to contents within 1000 PPM.
Disclosure of Invention
The invention aims to overcome the defects and provide the artificial leather which has excellent wear resistance, antibacterial property, wrinkle resistance and flexibility and good anti-fouling performance; in addition, the invention also provides a preparation method of the artificial leather.
In order to achieve the above object, a first aspect of the present invention provides an artificial leather, comprising a substrate layer and a surface layer, which are sequentially stacked;
the base material layer comprises a fabric layer, a bonding layer and a PU layer which are sequentially stacked; the PU layer comprises a first PU layer and a second PU layer which are sequentially stacked, and the surface layer is arranged on one side of the second PU layer, which is far away from the first PU layer;
the first PU layer is prepared from the following components in parts by weight: 100 parts of oil-based polyurethane resin, 5-10 parts of polyester fiber, 0.5-1 part of propyl paraben, 0.5-1 part of wear-resisting agent, 0.5-1 part of dispersant A and 100-180 parts of solvent A;
the second PU layer is prepared from the following components in parts by weight: 100 parts of oil-based polyurethane resin, 20-50 parts of nano bamboo charcoal powder, 3-10 parts of a softening agent, 0.5-1 part of a dispersing agent B and 100-180 parts of a solvent B;
the surface layer is prepared from the following raw materials in parts by weight: 15-30 parts of modified polysiloxane water-based emulsion, 5-10 parts of fluorine resin, 2-5 parts of anion powder, 1-3 parts of nano silver ion antibacterial agent and 80-100 parts of solvent C.
By adopting the technical scheme, the first PU layer prepared from the oil-based polyurethane resin, the polyester fiber, the propylparaben, the wear-resisting agent, the dispersant A and the solvent A has excellent wear resistance, antibacterial property and wrinkle resistance; the second PU layer is prepared from the oil-based polyurethane resin, the nano bamboo charcoal powder, the softening agent, the dispersing agent B and the solvent B, so that the flexibility of the artificial leather is improved, and the artificial leather has the effects of disinfecting, deodorizing, purifying and killing pathogenic microorganisms; the surface layer is made of modified polysiloxane water-based emulsion, fluorine resin, anion powder, a nano silver ion antibacterial agent and a solvent C, the modified polysiloxane water-based emulsion increases the softness of the artificial leather, the artificial leather has better ductility, the anti-fouling performance of the artificial leather is improved, the nano silver ion antibacterial agent enables the artificial leather to achieve long-acting bacteriostasis, and air adjacent to the artificial leather is ionized into air anions on the anion powder, so that the air comfort is improved.
Preferably, the dispersant A and the dispersant B are both block polymer dispersants with the trade mark SP-780, and the solvent A and the solvent B are both cyclohexanone.
Preferably, the nano bamboo charcoal powder is prepared by the following method:
a. drying natural bamboo, and calcining to obtain bamboo charcoal;
b. and (b) crushing the bamboo charcoal obtained in the step a to 100-110 meshes by using a crusher, and then grinding the bamboo charcoal to 100-500 nm of superfine powder by using nano grinding equipment to obtain the nano bamboo charcoal powder.
Preferably, the softener is dimethicone.
Preferably, the anion powder is tourmaline powder; and the solvent C is deionized water.
Further preferably, the fineness of the tourmaline powder is 3000 meshes.
The invention provides a preparation method of the artificial leather, which comprises the following steps:
s1, mixing the oil-based polyurethane resin, the polyester fiber, the propylparaben, the wear-resistant agent, the dispersant A and the solvent A according to the weight part ratio, and uniformly stirring to obtain first PU layer slurry;
s2, coating the first PU layer slurry obtained in the step S1 on release paper, drying by hot air, and forming a first PU layer on the release paper after drying;
s3, mixing the oil-based polyurethane resin, the nano bamboo charcoal powder, the softening agent, the dispersing agent B and the solvent B according to the weight part ratio, and uniformly stirring to obtain second PU layer slurry;
s4, coating the second PU layer slurry obtained in the step S3 on the first PU layer, drying the first PU layer by hot air, forming a second PU layer on the first PU layer after drying, and removing the release paper to obtain a PU layer;
s5, placing the bonding slurry into a casting machine for casting to form a film, wherein the casting temperature is 140-150 ℃, and forming a bonding layer;
s6, preparing a cloth layer, covering the bonding layer obtained in the step S5 on the cloth layer, then covering the PU layer obtained in the step S4 on the bonding layer, and performing hot pressing and attaching at 120 ℃ to obtain a substrate layer; wherein a second of the PU layers faces the bonding layer;
s7, mixing the modified polysiloxane water-based emulsion, the fluorine resin, the anion powder, the nano silver ion antibacterial agent and the solvent C according to the weight part ratio, and uniformly stirring to obtain surface layer slurry;
s8, coating the surface layer slurry obtained in the step S7 on the first PU layer in the base material layer obtained in the step S6, drying with hot air, and drying to obtain the artificial leather.
Furthermore, the bonding paste is a water-based acrylic acid modified adhesive which is free from peculiar smell and does not volatilize harmful substances.
Compared with the prior art, the invention has the beneficial effects that:
1. the artificial leather has excellent wear resistance, antibacterial property, wrinkle resistance and flexibility, and good stain resistance, and can be widely applied to the fields of bags, shoes, sofas, home soft clothing, automotive interiors and the like; the first PU layer has excellent wear resistance, antibacterial property and wrinkle resistance; the second PU layer increases the flexibility of the artificial leather, and simultaneously, the artificial leather has the functions of disinfection, deodorization, purification and killing pathogenic microorganisms; the surface layer is made of modified polysiloxane water-based emulsion, fluorine resin, anion powder, a nano silver ion antibacterial agent and a solvent C, the modified polysiloxane water-based emulsion increases the softness of the artificial leather, so that the artificial leather has better ductility, the anti-fouling performance of the artificial leather is improved, the nano silver ion antibacterial agent enables the artificial leather to achieve long-acting bacteriostasis, the artificial leather disclosed by the invention also has the function of releasing anions for a long time through the anion powder, and the deodorization and bacteriostasis performance of the artificial leather is further improved while the use comfort of a user is improved.
2. The preparation method of the artificial leather is simple in process, safe and environment-friendly, suitable for large-scale production and high in popularization and application value.
Drawings
FIG. 1 is a schematic view of the structure of an artificial leather according to the present invention;
FIG. 2 is a process flow diagram of a method for preparing artificial leather according to the present invention;
FIG. 3 is a process flow diagram of the preparation method of nano bamboo charcoal powder according to the present invention;
FIG. 4 is a graph showing the change in tensile strength index for samples 1-4;
FIG. 5 is a graph of the change in tear strength index for samples 1-4;
FIG. 6 is a graph showing the variation of the burst strength index of samples 1 to 4;
FIG. 7 is a graph showing the variation of the E.coli bacteriostatic index of samples 1-4;
FIG. 8 is a graph showing the change of the Staphylococcus aureus inhibition rate index of samples 1-4.
The correspondence between each mark and the part name is as follows:
Detailed Description
In order to make the technical means, the characteristics, the purposes and the functions of the invention easy to understand, the invention is further described with reference to the specific drawings.
Example 1
Referring to fig. 1, this embodiment provides an artificial leather, including the bed of cloth 1, tie coat 2, first PU layer 3, second PU layer 4, the surface course 5 that stack gradually the setting, wherein, the bed of cloth 1, tie coat 2, first PU layer 3, the second PU layer 4 that stack gradually the setting have constituteed artificial leather's substrate layer, and first PU layer 3, second PU layer 4 have constituteed artificial leather's PU layer.
The first PU layer 3 in this embodiment is made from the following components by weight: 100kg of oil-based polyurethane resin, 5kg of polyester fiber, 0.5kg of propyl p-hydroxybenzoate, 0.5kg of wear-resisting agent, 0.5kg of dispersing agent A and 100kg of solvent A.
The second PU layer 4 in this example is made from the following components by weight: 100kg of oil-based polyurethane resin, 20kg of nano bamboo charcoal powder, 3kg of softening agent, 0.5kg of dispersing agent B and 10kg of solvent B.
The surface layer 5 in this embodiment is made of the following raw materials by weight: 15kg of modified polysiloxane aqueous emulsion, 5kg of fluorine resin, 2kg of anion powder, 1kg of nano silver ion antibacterial agent and 80kg of solvent C.
In this example, the dispersant A and the dispersant B are both block polymer dispersants with the trade name SP-780, and the solvent A and the solvent B are both cyclohexanone.
The anti-wear agent in this example is silicon carbide.
Referring to fig. 2, the nano bamboo charcoal powder in this example is prepared by the following method:
a. drying natural bamboo, and calcining to obtain bamboo charcoal;
b. and (b) crushing the bamboo charcoal obtained in the step a to 100 meshes by using a crusher, and grinding the bamboo charcoal to 4000nm superfine powder by using a nano grinding device to obtain the nano bamboo charcoal powder.
The softening agent in the embodiment is dimethyl silicone oil.
The anion powder in the embodiment is tourmaline powder; and the solvent C is deionized water.
Further, the fineness of the tourmaline powder is 3000 meshes.
The modified silicone aqueous emulsion in this example was a modified silicone aqueous emulsion having a trade name of Melio WF-5238, produced by Craine chemical Co., Ltd.
The nano silver ion antibacterial agent in the embodiment is a nano silver ion antibacterial agent with the brand number of 7440-22-4 produced by Yurui chemical Co.
Referring to fig. 3, the method for preparing artificial leather in the present embodiment includes the following steps:
s1, mixing the oil-based polyurethane resin, the polyester fiber, the propylparaben, the wear-resistant agent, the dispersant A and the solvent A according to the weight part ratio, and uniformly stirring to obtain first PU layer slurry;
s2, coating the first PU layer slurry obtained in the step S1 on release paper, drying by hot air, and forming a first PU layer 3 on the release paper after drying;
s3, mixing the oil-based polyurethane resin, the nano bamboo charcoal powder, the softening agent, the dispersing agent B and the solvent B according to the weight part ratio, and uniformly stirring to obtain second PU layer slurry;
s4, coating the second PU layer slurry obtained in the step S3 on the first PU layer 3, drying by hot air, forming a second PU layer 4 on the first PU layer 3 after drying, and tearing off release paper to obtain a PU layer;
s5, placing the bonding slurry into a casting machine for casting to form a film, wherein the casting temperature is 140-150 ℃, and forming a bonding layer 2;
s6, preparing a cloth layer 1, covering the bonding layer 2 obtained in the step S5 on the cloth layer 1, then covering the PU layer obtained in the step S4 on the bonding layer 2, and performing hot pressing and laminating at 120 ℃ to obtain a substrate layer; wherein the second PU layer 4 of the PU layers is facing the bonding layer 2;
s7, mixing the modified polysiloxane water-based emulsion, the fluorine resin, the anion powder, the nano silver ion antibacterial agent and the solvent C according to the weight part ratio, and uniformly stirring to obtain surface layer slurry;
and S8, coating the surface layer slurry obtained in the step S7 on the first PU layer 3 in the base material layer obtained in the step S6, drying by hot air, and drying to obtain the artificial leather.
In this embodiment, the bonding paste is a water-based acrylic modified adhesive, which has no odor and no volatilization of harmful substances.
Example 2
Referring to fig. 1, this embodiment provides an artificial leather, including the bed of cloth 1, tie coat 2, first PU layer 3, second PU layer 4, the surface course 5 that stack gradually the setting, wherein, the bed of cloth 1, tie coat 2, first PU layer 3, the second PU layer 4 that stack gradually the setting have constituteed artificial leather's substrate layer, and first PU layer 3, second PU layer 4 have constituteed artificial leather's PU layer.
The first PU layer 3 is made from the following components by weight: 100kg of oil-based polyurethane resin, 10kg of polyester fiber, 1kg of propyl p-hydroxybenzoate, 1kg of wear-resisting agent, 1kg of dispersing agent A and 180kg of solvent A.
The second PU layer 4 is made from the following components by weight: 100kg of oil-based polyurethane resin, 50kg of nano bamboo charcoal powder, 10kg of softening agent, 1kg of dispersing agent B and 180kg of solvent B.
The surface layer 5 is prepared from the following raw materials in parts by weight: 30kg of modified polysiloxane aqueous emulsion, 10kg of fluorine resin, 5kg of anion powder, 3kg of nano silver ion antibacterial agent and 100kg of solvent C.
In this example, the dispersant A and the dispersant B are both block polymer dispersants with the trade name SP-780, and the solvent A and the solvent B are both cyclohexanone.
The anti-wear agent in this example is silicon carbide.
Referring to fig. 2, the nano bamboo charcoal powder in this example is prepared by the following method:
a. drying natural bamboo, and calcining to obtain bamboo charcoal;
b. and (b) crushing the bamboo charcoal obtained in the step a to 110 meshes by using a crusher, and grinding the bamboo charcoal to 400nm superfine powder by using a nano grinding device to obtain the nano bamboo charcoal powder.
The softening agent in the embodiment is dimethyl silicone oil.
The anion powder in the embodiment is tourmaline powder; and the solvent C is deionized water.
Further, the fineness of the tourmaline powder is 3000 meshes.
The modified silicone aqueous emulsion in this example was a modified silicone aqueous emulsion having a trade name of Melio WF-5238, produced by Craine chemical Co., Ltd.
The nano silver ion antibacterial agent in the embodiment is a nano silver ion antibacterial agent with the brand number of 7440-22-4 produced by Yurui chemical Co.
Referring to fig. 3, the method for preparing artificial leather includes the following steps:
s1, mixing the oil-based polyurethane resin, the polyester fiber, the propylparaben, the wear-resistant agent, the dispersant A and the solvent A according to the weight part ratio, and uniformly stirring to obtain first PU layer slurry;
s2, coating the first PU layer slurry obtained in the step S1 on release paper, drying by hot air, and forming a first PU layer 3 on the release paper after drying;
s3, mixing the oil-based polyurethane resin, the nano bamboo charcoal powder, the softening agent, the dispersing agent B and the solvent B according to the weight part ratio, and uniformly stirring to obtain second PU layer slurry;
s4, coating the second PU layer slurry obtained in the step S3 on the first PU layer 3, drying by hot air, forming a second PU layer 4 on the first PU layer 3 after drying, and tearing off release paper to obtain a PU layer;
s5, placing the bonding slurry into a casting machine for casting to form a film, wherein the casting temperature is 140-150 ℃, and forming a bonding layer 2;
s6, preparing a cloth layer 1, covering the bonding layer 2 obtained in the step S5 on the cloth layer 1, then covering the PU layer obtained in the step S4 on the bonding layer 2, and performing hot pressing and laminating at 120 ℃ to obtain a substrate layer; wherein the second PU layer 4 of the PU layers is facing the bonding layer 2;
s7, mixing the modified polysiloxane water-based emulsion, the fluorine resin, the anion powder, the nano silver ion antibacterial agent and the solvent C according to the weight part ratio, and uniformly stirring to obtain surface layer slurry;
and S8, coating the surface layer slurry obtained in the step S7 on the first PU layer 3 in the base material layer obtained in the step S6, drying by hot air, and drying to obtain the artificial leather.
In this embodiment, the bonding paste is a water-based acrylic modified adhesive, which has no odor and no volatilization of harmful substances.
Example 3
Referring to fig. 1, this embodiment provides an artificial leather, including the bed of cloth 1, tie coat 2, first PU layer 3, second PU layer 4, the surface course 5 that stack gradually the setting, wherein, the bed of cloth 1, tie coat 2, first PU layer 3, the second PU layer 4 that stack gradually the setting have constituteed artificial leather's substrate layer, and first PU layer 3, second PU layer 4 have constituteed artificial leather's PU layer.
The first PU layer 3 is made from the following components by weight: 100kg of oil-based polyurethane resin, 8kg of polyester fiber, 0.7kg of propyl p-hydroxybenzoate, 0.5kg of wear-resisting agent, 0.5kg of dispersing agent A and 120kg of solvent A.
The second PU layer 4 is made from the following components by weight: 100kg of oil-based polyurethane resin, 48kg of nano bamboo charcoal powder, 5kg of softening agent, 0.6kg of dispersing agent B and 130kg of solvent B.
The surface layer 5 is prepared from the following raw materials in parts by weight: 20kg of modified polysiloxane aqueous emulsion, 5.2kg of fluorine resin, 3.7kg of anion powder, 2.5kg of nano silver ion antibacterial agent and 92kg of solvent C.
In this example, the dispersant A and the dispersant B are both block polymer dispersants with the trade name SP-780, and the solvent A and the solvent B are both cyclohexanone.
The anti-wear agent in this example is silicon carbide.
Referring to fig. 2, the nano bamboo charcoal powder in this example is prepared by the following method:
a. drying natural bamboo, and calcining to obtain bamboo charcoal;
b. and (b) crushing the bamboo charcoal obtained in the step a to 110 meshes by using a crusher, and grinding the bamboo charcoal to 400nm superfine powder by using a nano grinding device to obtain the nano bamboo charcoal powder.
The softening agent in the embodiment is dimethyl silicone oil.
The anion powder in the embodiment is tourmaline powder; and the solvent C is deionized water.
Further, the fineness of the tourmaline powder is 3000 meshes.
The modified silicone aqueous emulsion in this example was a modified silicone aqueous emulsion having a trade name of Melio WF-5238, produced by Craine chemical Co., Ltd.
The nano silver ion antibacterial agent in the embodiment is a nano silver ion antibacterial agent with the brand number of 7440-22-4 produced by Yurui chemical Co.
Referring to fig. 3, the method for preparing artificial leather includes the following steps:
s1, mixing the oil-based polyurethane resin, the polyester fiber, the propylparaben, the wear-resistant agent, the dispersant A and the solvent A according to the weight part ratio, and uniformly stirring to obtain first PU layer slurry;
s2, coating the first PU layer slurry obtained in the step S1 on release paper, drying by hot air, and forming a first PU layer 3 on the release paper after drying;
s3, mixing the oil-based polyurethane resin, the nano bamboo charcoal powder, the softening agent, the dispersing agent B and the solvent B according to the weight part ratio, and uniformly stirring to obtain second PU layer slurry;
s4, coating the second PU layer slurry obtained in the step S3 on the first PU layer 3, drying by hot air, forming a second PU layer 4 on the first PU layer 3 after drying, and tearing off release paper to obtain a PU layer;
s5, placing the bonding slurry into a casting machine for casting to form a film, wherein the casting temperature is 140-150 ℃, and forming a bonding layer 2;
s6, preparing a cloth layer 1, covering the bonding layer 2 obtained in the step S5 on the cloth layer 1, then covering the PU layer obtained in the step S4 on the bonding layer 2, and performing hot pressing and laminating at 120 ℃ to obtain a substrate layer; wherein the second PU layer 4 of the PU layers is facing the bonding layer 2;
s7, mixing the modified polysiloxane water-based emulsion, the fluorine resin, the anion powder, the nano silver ion antibacterial agent and the solvent C according to the weight part ratio, and uniformly stirring to obtain surface layer slurry;
and S8, coating the surface layer slurry obtained in the step S7 on the first PU layer 3 in the base material layer obtained in the step S6, drying by hot air, and drying to obtain the artificial leather.
In this embodiment, the bonding paste is a water-based acrylic modified adhesive, which has no odor and no volatilization of harmful substances.
Comparative example 1
The artificial leather is currently commercially available DN 085.
Test example 1
The artificial leathers prepared in examples 1 to 3 were labeled as sample 1, sample 2 and sample 3 in this order, the artificial leather in the comparative example was labeled as sample 4, and the tensile strength, tear strength, bursting strength and abrasion resistance of sample 1, sample 2, sample 3 and sample 4 were measured, and the results are shown in table 1.
TABLE 1 Table of the results of the tensile strength, tear strength, bursting strength and abrasion resistance measurements
| Content of test | | Sample | 1 | |
|
Sample No. 4 |
| Tensile strength/MPa | ISO 3376 | 0.66 | 0.68 | 0.71 | 0.51 | |
| Tear Strength KN/m | ISO 3377-2 | 3.0 | 3.2 | 3.5 | 2.1 | |
| Bursting strength N/m | ASTM D4704 | 80.2 | 84.1 | 86.5 | 72.0 |
As can be seen from the variation graphs of the performance indexes in Table 1 and FIGS. 4 to 6, the tensile strength, tear strength and bursting strength of the artificial leather in the examples of the present invention are superior to those of the commercial products.
Test example 2
The leather abrasion test is carried out by an universal abrasion tester GT-7012-S manufactured by Shenzhen Yinfei electronic technology Limited; the test results are shown in table 2.
TABLE 2 abrasion resistance test results for samples 1-4
As can be seen from Table 2, the artificial leathers of the examples of the present invention are far superior in abrasion resistance to the commercially available products.
Test example 3
And (3) carrying out bacteriostatic performance detection on the samples 1-4 according to the GB/T20944.3-2008 standard, wherein the experimental method is a shaking method. The test results are shown in table 3.
TABLE 3 table of the results of the samples 1-4 in the determination of the bacteriostatic rate
As can be seen from the performance index change curves in Table 3 and FIGS. 7 to 8, the antibacterial rate of the artificial leather in the examples of the present invention is better than that of the commercial products. The qualification standards in GB/T20944.3-2008 are that the escherichia coli inhibition rate is not less than 70%, the staphylococcus aureus inhibition rate is not less than 70%, and the escherichia coli inhibition rate and the staphylococcus aureus inhibition rate of the commercially available products are not qualified, i.e. the commercially available artificial leather cannot realize the antibacterial effect.
Test example 4
The antifouling properties of the samples 1, 2, 3 and 4 were measured.
The samples 1 to 4 are all placed under the conditions of constant temperature and constant humidity (the temperature is 70 ℃ and the humidity is 85 ℃) for 7 days, and then the antifouling performance of the samples is detected.
The antifouling property detection method comprises the following steps: graffiti was made on the surfaces of samples 1-4 using a ball point pen, respectively, and then wiped with a paper towel.
The results show that the graffiti stains on samples 1-3 were all wiped off, leaving graffiti stain on sample 4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The artificial leather is characterized by comprising a base material layer and a surface layer which are sequentially stacked; the base material layer comprises a fabric layer, a bonding layer and a PU layer which are sequentially stacked; the PU layer comprises a first PU layer and a second PU layer which are sequentially stacked, and the surface layer is arranged on one side of the second PU layer, which is far away from the first PU layer;
the first PU layer is prepared from the following components in parts by weight: 100 parts of oil-based polyurethane resin, 5-10 parts of polyester fiber, 0.5-1 part of propyl paraben, 0.5-1 part of wear-resisting agent, 0.5-1 part of dispersant A and 100-180 parts of solvent A;
the second PU layer is prepared from the following components in parts by weight: 100 parts of oil-based polyurethane resin, 20-50 parts of nano bamboo charcoal powder, 3-10 parts of a softening agent, 0.5-1 part of a dispersing agent B and 100-180 parts of a solvent B;
the surface layer is prepared from the following raw materials in parts by weight: 15-30 parts of modified polysiloxane water-based emulsion, 5-10 parts of fluorine resin, 2-5 parts of anion powder, 1-3 parts of nano silver ion antibacterial agent and 80-100 parts of solvent C.
2. The artificial leather of claim 1, wherein said dispersant a and said dispersant B are both block polymer dispersants with the brand number SP-780, and said solvent a and said solvent B are both cyclohexanone.
3. The artificial leather of claim 1, wherein the nano bamboo charcoal powder is prepared by the following method:
a. drying natural bamboo, and calcining to obtain bamboo charcoal;
b. and (b) crushing the bamboo charcoal obtained in the step a to 100-110 meshes by using a crusher, and then grinding the bamboo charcoal to 100-500 nm of superfine powder by using nano grinding equipment to obtain the nano bamboo charcoal powder.
4. The artificial leather of claim 1, wherein the softening agent is dimethicone.
5. The artificial leather of claim 1, wherein the anion powder is tourmaline powder; and the solvent C is deionized water.
6. The artificial leather according to claim 5, wherein the fineness of the tourmaline powder is 3000 mesh.
7. A process for the preparation of artificial leather according to any one of claims 1 to 6, comprising the following steps:
s1, mixing the oil-based polyurethane resin, the polyester fiber, the propylparaben, the wear-resistant agent, the dispersant A and the solvent A according to the weight part ratio, and uniformly stirring to obtain first PU layer slurry;
s2, coating the first PU layer slurry obtained in the step S1 on release paper, drying by hot air, and forming a first PU layer on the release paper after drying;
s3, mixing the oil-based polyurethane resin, the nano bamboo charcoal powder, the softening agent, the dispersing agent B and the solvent B according to the weight part ratio, and uniformly stirring to obtain second PU layer slurry;
s4, coating the second PU layer slurry obtained in the step S3 on the first PU layer, drying the first PU layer by hot air, forming a second PU layer on the first PU layer after drying, and removing the release paper to obtain a PU layer;
s5, placing the bonding slurry into a casting machine for casting to form a film, wherein the casting temperature is 140-150 ℃, and forming a bonding layer;
s6, preparing a cloth layer, covering the bonding layer obtained in the step S5 on the cloth layer, then covering the PU layer obtained in the step S4 on the bonding layer, and performing hot pressing and attaching at 120 ℃ to obtain a substrate layer; wherein a second of the PU layers faces the bonding layer;
s7, mixing the modified polysiloxane water-based emulsion, the fluorine resin, the anion powder, the nano silver ion antibacterial agent and the solvent C according to the weight part ratio, and uniformly stirring to obtain surface layer slurry;
s8, coating the surface layer slurry obtained in the step S7 on the first PU layer in the base material layer obtained in the step S6, drying with hot air, and drying to obtain the artificial leather.
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