CN112553916A - Flexible anti-cracking suede nap and preparation method thereof - Google Patents
Flexible anti-cracking suede nap and preparation method thereof Download PDFInfo
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- CN112553916A CN112553916A CN202011363276.8A CN202011363276A CN112553916A CN 112553916 A CN112553916 A CN 112553916A CN 202011363276 A CN202011363276 A CN 202011363276A CN 112553916 A CN112553916 A CN 112553916A
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- 238000005336 cracking Methods 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 129
- 239000011248 coating agent Substances 0.000 claims abstract description 125
- 239000002987 primer (paints) Substances 0.000 claims abstract description 70
- 239000000654 additive Substances 0.000 claims abstract description 64
- 230000000996 additive effect Effects 0.000 claims abstract description 63
- 239000004744 fabric Substances 0.000 claims abstract description 42
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000001263 FEMA 3042 Substances 0.000 claims abstract description 24
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims abstract description 24
- -1 aminosiloxane Chemical class 0.000 claims abstract description 24
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims abstract description 24
- 229940033123 tannic acid Drugs 0.000 claims abstract description 24
- 235000015523 tannic acid Nutrition 0.000 claims abstract description 24
- 229920002258 tannic acid Polymers 0.000 claims abstract description 24
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 66
- 229920000570 polyether Polymers 0.000 claims description 66
- 229920002635 polyurethane Polymers 0.000 claims description 66
- 239000004814 polyurethane Substances 0.000 claims description 66
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 62
- 238000006243 chemical reaction Methods 0.000 claims description 62
- 239000003292 glue Substances 0.000 claims description 61
- 210000003746 feather Anatomy 0.000 claims description 60
- 241000287828 Gallus gallus Species 0.000 claims description 56
- 238000003756 stirring Methods 0.000 claims description 33
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 28
- 239000010985 leather Substances 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 24
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 16
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 16
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 16
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 16
- 238000002791 soaking Methods 0.000 claims description 16
- 238000003490 calendering Methods 0.000 claims description 15
- 230000004584 weight gain Effects 0.000 claims description 15
- 235000019786 weight gain Nutrition 0.000 claims description 15
- 241001481789 Rupicapra Species 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 14
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 10
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 235000013312 flour Nutrition 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims description 8
- 230000007935 neutral effect Effects 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 39
- 239000004753 textile Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 17
- 108090000623 proteins and genes Proteins 0.000 description 15
- 102000004169 proteins and genes Human genes 0.000 description 15
- 239000012528 membrane Substances 0.000 description 14
- 238000005452 bending Methods 0.000 description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 239000006260 foam Substances 0.000 description 12
- 238000005303 weighing Methods 0.000 description 12
- 206010020112 Hirsutism Diseases 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 3
- 239000002313 adhesive film Substances 0.000 description 3
- 229920013822 aminosilicone Polymers 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 108090000765 processed proteins & peptides Proteins 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005543 nano-size silicon particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010345 tape casting Methods 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
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using flocked webs or pile fabrics upon which a resin is applied; Teasing, raising web before resin application
-
- 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
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/0047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by incorporating air, i.e. froth
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
-
- 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
- D06N2209/1635—Elasticity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1642—Hardnes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- 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)
- Paints Or Removers (AREA)
Abstract
The invention relates to a flexible anti-cracking suede nap and a preparation method thereof, and belongs to the technical field of textile fabric preparation. According to the suede material, the surface is coated with the primer coating and the surface coating, the self-made primer additive, the self-made surface coating additive, the tannic acid and the aminosiloxane LK-536 are added into the two layers of coatings, and the two layers of coatings are mutually and synergistically reacted to act on the surface of the suede, so that the flexibility and the crack resistance of the suede material are improved, the toughness and the mechanical strength of the suede material are obviously improved, and the suede material has a wide application prospect.
Description
Technical Field
The invention relates to a flexible anti-cracking suede nap and a preparation method thereof, and belongs to the technical field of textile fabric preparation.
Background
At present, leather is widely applied to the fields of shoemaking, clothes, automotive interiors, bags and the like in modern life, but the quantity and price of natural leather are limited to a certain extent in application, and various substituted leather-like materials meet the requirements of the broad market by virtue of high quality, low price, various varieties and colors. In the garment material and shoe material markets, the suede nap imitation leather finishing fabric is unique. Many properties of the suede fabric are not inferior to those of natural suede, and even superior to those of natural suede, such as soft texture, waxy property, good drapability, light and thin texture, and good warmth retention property, hygroscopicity and wear resistance.
In the textile industry, the fabric imitating the style of animal chamois leather is called suede nap, and the market of the cloth commonly refers to the suede nap as suede nap. The suede nap is natural fiber or mixed fabric of natural fiber and superfine fiber, and the fabric surface is formed into a forward smooth hairiness style, and the unique style of the fabric is very popular with consumers. The suede dry method leather membrane coating directly applies coating equipment to coat coating glue on the surface of the fabric in a blade coating mode to endow the fabric with suede leather membrane style. After the suede fabric passes through the leather membrane coating, due to the separation of fluffy hairiness on the surface of the suede, the coated coating glue is combined with the hairiness surface of the suede to form a coating leather membrane, and the appearance of the coating leather membrane is close to that of leather. The coating leather membrane is thick due to the hairiness on the surface of the suede nap, the coating leather membrane is easy to crack after being repeatedly bent during use, and the coating leather membrane is hard and brittle particularly at low temperature, so that the crack is easy to occur.
In view of the above-mentioned drawbacks, the present inventors have made active research and innovation to create a flexible anti-cracking suede and a method for preparing the same, so that the suede has industrial value.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a flexible anti-crack suede and a method for preparing the same.
The invention discloses flexible anti-cracking suede which comprises suede fabric, and primer coating and surface coating coated on the surface of the suede fabric;
the primer coating comprises the following raw materials in parts by weight:
100-120 parts of polyether polyurethane;
1-2 parts of carboxymethyl cellulose;
10-15 parts of polyvinyl alcohol;
3-5 parts of a self-made primer additive;
the surface glue coating comprises the following raw materials in parts by weight:
100-120 parts of polyether polyurethane;
1-2 parts of carboxymethyl cellulose;
10-15 parts of a self-made flour-binding adhesive additive;
the self-made primer additive is prepared by the reaction of chicken feather, hydrochloric acid, sodium bisulfite and sodium hydroxide solution; in the primer coating, as the disulfide bonds in the chicken feather protein in the self-made primer additive are more, the flexibility is good, and the chicken feather protein has obvious amphipathy, the coating has good foaming capacity, on the other hand, the viscosity of protein colloid is higher, part of peptide chains can extend on a gas-liquid interface to form a two-dimensional protection network, so that the mechanical strength of a foam interface film is increased, the stability of foam can be promoted to be improved, generated bubbles are dispersed in polyurethane resin to form a microbubble aggregate and are mutually isolated by a resin film, adjacent microbubbles are mutually aggregated to form foam, in the baking process after the surface of chamois leather is coated, part of air existing in the bubbles is discharged from the front and back surfaces of the primer coating, so that the adhesive film forms through micropores, in addition, due to the blocking effect of the bubbles, the primer coating is not easy to permeate into the inside of a fabric base layer, so that the chamois leather fabric after primer coating is not dead, is soft and elastic, and improves the flexibility of the suede material.
The self-made surface glue additive is prepared by reacting sodium silicate solution, hydrochloric acid and acrylic ester. The silica sol in the self-made face glue additive has a plurality of hydroxyl groups, and the hydroxyl groups are subjected to crosslinking reaction in the reaction, so that the tensile strength of the coating can be effectively improved, the distortion and bending resistance of the leather membrane coating is greatly improved, and the self-made face glue additive is rich in silicon-oxygen bonds which are very soft, the breaking elongation is also improved, and the flexibility of the suede material is favorably improved.
Further, the primer coating also comprises 3-5 parts of tannic acid. The invention also adds tannic acid which is tannic acid, and the tannic acid is chemically treated to solidify the chicken feather protein into leather and improve the toughness and burst strength of the coating, thereby further improving the flexibility of the suede material.
Further, the surface glue coating also comprises 5-10 parts of aminosiloxane LK-536. The aminosiloxane LK-536 can form carbamate in the reaction process, which is beneficial to forming a polyether polyurethane macromolecular reticular structure, can enhance the membrane strength and further improve the flexibility of the suede material;
further, the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane. The resistance of free rotation of the ether bond of the polyether polyurethane is smaller than that of C-C, and the ether bond separates C-C to increase the flexibility of a macromolecular chain, so that the flexibility, the elasticity and the distortion and bending resistance of the primer coating can be improved;
a preparation method of flexible anti-cracking suede comprises the following specific preparation steps:
coating the primer coating on the chamois leather velvet fabric along the feather direction by using a floating knife type coating machine, baking for 1-2 min at 130-140 ℃, and controlling the dry weight gain to be 5-8 g/m2Then, calendering by using a calender under the conditions that the pressure is 7-8 MPa, the temperature is 70-80 ℃ and the speed is 25-35 m/min, then coating a surface glue coating on the calendered bottom glue coating by using a floating knife type coating machine, baking for 1-2 min at 160-170 ℃, and controlling the dry weight gain to be 7-10 g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede. Because the surface hairiness of the suede fabric is longer, coating along the hairiness can prevent the coating glue from permeating too much fiber, so that the coated fabric is not hardened and has high elasticity.
Further, the preparation steps of the self-made primer additive are as follows:
(1) putting the waste chicken feathers into a grinder to be ground, sieving the ground chicken feathers by a 50-mesh sieve, collecting the ground chicken feathers to obtain a sieved chicken feather powder, mixing the sieved chicken feather powder and hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture at the temperature of 60-70 ℃ for 2-3 hours to obtain a prepreg;
(2) adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2-3 h at 60-70 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, carrying out oscillation reaction for 1-2 h, filtering, separating and removing filter residues to obtain a filtrate, and adjusting the pH to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain the self-made primer additive. Firstly, waste chicken feathers are used as raw materials, pretreated by hydrochloric acid and sodium sulfite, and then dissolved by alkali liquor to obtain a self-made primer additive;
further, the preparation method of the self-made flour glue additive comprises the following steps:
filling 30 mass percent sodium silicate solution into a reaction kettle, dropwise adding 1mol/L hydrochloric acid into the reaction kettle to adjust the pH value to 5, stirring and reacting for 30-40 min at normal temperature, sealing the reaction kettle, heating to 120-130 ℃, carrying out high-temperature hydrolysis reaction for 1-2 h to obtain sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain the self-made dough glue additive.
By the scheme, the invention at least has the following advantages:
1. according to the suede material, the surface is coated with the primer coating and the surface coating, the self-made primer additive, the self-made surface coating additive, the tannic acid and the aminosiloxane LK-536 are added into the two layers of coatings, and the two layers of coatings are mutually and synergistically reacted to act on the surface of the suede, so that the flexibility and the crack resistance of the suede material are improved, the toughness and the mechanical strength of the suede material are obviously improved, and the suede material has a wide application prospect.
2. In the primer coating, as the disulfide bonds in the chicken feather protein in the self-made primer additive are more, the flexibility is good, and the two-dimensional protective network is formed, the mechanical strength of a foam interface film is increased, the foam stability can be promoted to be improved, the generated bubbles are dispersed in polyurethane resin to form a microbubble aggregate, the bubbles are mutually isolated by resin films, adjacent microbubbles are mutually aggregated to form foam, in the baking process after the suede surface is coated, part of air in the bubbles is discharged from the front and back sides of the primer coating, so that the adhesive film forms through micropores, in addition, due to the blocking effect of the bubbles, the primer coating is not easy to permeate into the base layer of the fabric, the suede fabric after the bottom coating is not rigid, is soft and elastic, improves the flexibility of suede materials, is added with tannic acid which is tannic acid, is chemically treated by the tannic acid, can solidify chicken feather protein into leather, and improves the toughness and the bursting strength of a coating, so that the flexibility of the suede materials is further improved, in addition, the resistance of ether linkage free rotation of polyether polyurethane is smaller than that of C-C, and the ether linkage separates the C-C to increase the flexibility of a macromolecular chain, so that the flexibility, the elasticity and the distortion bending resistance of a primer coating can be improved;
3. the silica sol in the self-made face glue additive has a plurality of hydroxyl groups, and the hydroxyl groups are subjected to crosslinking reaction in the reaction, so that the tensile strength of a coating can be effectively improved, the distortion and bending resistance of a leather membrane coating is greatly improved, the self-made face glue additive is rich in silicon-oxygen bonds which are very soft, the breaking elongation is also improved, the flexibility of a suede nap material is favorably increased, in addition, the aminosiloxane LK-536 can form carbamate in the reaction process, the polyether polyurethane macromolecular net structure is favorably formed, the membrane strength can be enhanced, and the flexibility of the suede nap material is further improved;
4. because the surface hairiness of the suede fabric is longer, coating along the hairiness can prevent the coating glue from permeating too much fiber, so that the coated fabric is not hardened and has high elasticity.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Putting the waste chicken feathers into a grinder to be ground, sieving the ground chicken feathers by a 50-mesh sieve, collecting the ground chicken feathers to obtain a sieved chicken feather powder, mixing the sieved chicken feather powder and hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture at the temperature of 60-70 ℃ for 2-3 hours to obtain a prepreg;
adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2-3 h at 60-70 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, carrying out oscillation reaction for 1-2 h, filtering, separating and removing filter residues to obtain a filtrate, and adjusting the pH to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain a self-made primer additive; firstly, waste chicken feathers are used as raw materials, pretreated by hydrochloric acid and sodium sulfite, and then dissolved by alkali liquor to obtain a self-made primer additive;
weighing 100-120 parts by weight of polyether polyurethane, 1-2 parts by weight of carboxymethyl cellulose, 10-15 parts by weight of polyvinyl alcohol, 3-5 parts by weight of self-made primer additive and 3-5 parts by weight of tannic acid, and putting into a stirring kettle to stir for 20-30 min to obtain a primer coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane; in the primer coating, as the disulfide bonds in the chicken feather protein in the self-made primer additive are more, the flexibility is good, and the chicken feather protein has obvious amphipathy, the coating has good foaming capacity, on the other hand, the viscosity of protein colloid is higher, part of peptide chains can extend on a gas-liquid interface to form a two-dimensional protection network, so that the mechanical strength of a foam interface film is increased, the stability of foam can be promoted to be improved, generated bubbles are dispersed in polyurethane resin to form a microbubble aggregate and are mutually isolated by a resin film, adjacent microbubbles are mutually aggregated to form foam, in the baking process after the surface of chamois leather is coated, part of air existing in the bubbles is discharged from the front and back surfaces of the primer coating, so that the adhesive film forms through micropores, in addition, due to the blocking effect of the bubbles, the primer coating is not easy to permeate into the inside of a fabric base layer, so that the chamois leather fabric after primer coating is not dead, the elastic suede material is soft and elastic, the flexibility of the suede material is improved, in addition, tannic acid is also added, the tannic acid is chemically treated by the tannic acid, the chicken feather protein can be solidified into leather, the toughness and the burst resistance of a coating are improved, so that the flexibility of the suede material is further improved, in addition, the resistance of ether bond free rotation of polyether polyurethane is smaller than that of C-C, the ether bond separates C-C to increase the flexibility of a macromolecular chain, and therefore, the flexibility, the elasticity and the distortion bending resistance of a primer coating can also be improved;
filling a sodium silicate solution with the mass fraction of 30% into a reaction kettle, dropwise adding hydrochloric acid with the concentration of 1mol/L into the reaction kettle to adjust the pH value to 5, stirring and reacting for 30-40 min at normal temperature, sealing the reaction kettle, heating to 120-130 ℃, carrying out high-temperature hydrolysis reaction for 1-2 h to obtain a sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain a self-made dough glue additive; firstly, reacting hydrochloric acid and a sodium silicate solution to produce an orthosilicic acid precipitate, hydrolyzing the orthosilicic acid precipitate at a high temperature to generate a nano silicon dioxide sol, and compounding the nano silicon dioxide sol and acrylic ester to prepare a self-made surface adhesive additive;
weighing 100-120 parts by weight of polyether polyurethane, 1-2 parts by weight of carboxymethyl cellulose, 5-10 parts by weight of aminosiloxane LK-536 and 10-15 parts by weight of self-made face adhesive additive, and placing the mixture into a stirring kettle to be stirred for 20-30 min to obtain a face adhesive coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane; the silica sol in the self-made face glue additive has a plurality of hydroxyl groups, and the hydroxyl groups are subjected to crosslinking reaction in the reaction, so that the tensile strength of a coating can be effectively improved, the distortion and bending resistance of a leather membrane coating is greatly improved, the self-made face glue additive is rich in silicon-oxygen bonds which are very soft, the breaking elongation is also improved, the flexibility of a suede nap material is favorably increased, in addition, the aminosiloxane LK-536 can form carbamate in the reaction process, the polyether polyurethane macromolecular net structure is favorably formed, the membrane strength can be enhanced, and the flexibility of the suede nap material is further improved;
coating the primer coating on the chamois leather velvet fabric along the feather direction by using a floating knife type coating machine, baking for 1-2 min at 130-140 ℃, and controlling the dry weight gain to be 5-8 g/m2Then, calendering by using a calender under the conditions that the pressure is 7-8 MPa, the temperature is 70-80 ℃ and the speed is 25-35 m/min, then coating a surface glue coating on the calendered bottom glue coating by using a floating knife type coating machine, baking for 1-2 min at 160-170 ℃, and controlling the dry weight gain to be 7-10 g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede. Because the surface hairiness of the suede fabric is longer, coating along the hairiness can prevent the coating glue from permeating too much fiber, so that the coated fabric is not hardened and has high elasticity.
Example 1
Crushing the waste chicken feathers in a crusher, sieving the crushed chicken feathers with a 50-mesh sieve, collecting the crushed chicken feathers to obtain sieved chicken feather powder, mixing the sieved chicken feather powder with hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture at 60 ℃ for 2 hours to obtain a prepreg;
adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2 hours at 60 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, carrying out oscillation reaction for 1 hour, filtering and separating to remove filter residues to obtain a filtrate, and adjusting the pH value to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain a self-made primer additive;
weighing 100 parts of polyether polyurethane, 1 part of carboxymethyl cellulose, 10 parts of polyvinyl alcohol, 3 parts of self-made primer additive and 3 parts of tannic acid in parts by weight, and placing the materials into a stirring kettle to be stirred for 20min to obtain a primer coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
filling a sodium silicate solution with the mass fraction of 30% into a reaction kettle, dropwise adding hydrochloric acid with the concentration of 1mol/L into the reaction kettle to adjust the pH value to 5, stirring and reacting at normal temperature for 30min, sealing the reaction kettle, heating to 120 ℃, carrying out high-temperature hydrolysis reaction for 1h to obtain a sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain a self-made dough glue additive;
weighing 100 parts of polyether polyurethane, 1 part of carboxymethyl cellulose, 5 parts of aminosiloxane LK-536 and 10 parts of self-made flour glue additive in parts by weight, and placing the materials into a stirring kettle to be stirred for 20min to obtain a flour glue coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
coating the primer coating on the chamois flannel fabric along the down direction by a floating knife type coating machine, baking for 1min at 130 ℃, and controlling the dry weight gain to be 5g/m2Then, calendering the mixture by a calender under the conditions of pressure of 7MPa, temperature of 70 ℃ and speed of 25m/min, then coating the surface glue coating on the calendered bottom layer glue coating by a floating knife type coating machine, baking the coated surface glue coating at 160 ℃ for 1min, and controlling the dry weight gain to be 7g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede.
Example 2
Crushing waste chicken feathers in a crusher, sieving the crushed chicken feathers with a 50-mesh sieve, collecting the crushed chicken feathers to obtain sieved chicken feather powder, mixing the sieved chicken feather powder with hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture for 2 hours at 62 ℃ to obtain a prepreg;
adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2 hours at 62 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, carrying out oscillation reaction for 1 hour, filtering and separating to remove filter residues to obtain a filtrate, and adjusting the pH value to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain a self-made primer additive;
weighing 14 parts of polyether polyurethane, 1 part of carboxymethyl cellulose, 11 parts of polyvinyl alcohol, 3 self-made primer additives and 3 parts of tannic acid in parts by weight, and putting into a stirring kettle to stir for 22min to obtain a primer coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
filling a sodium silicate solution with the mass fraction of 30% into a reaction kettle, dropwise adding hydrochloric acid with the concentration of 1mol/L into the reaction kettle to adjust the pH value to 5, stirring and reacting for 32min at normal temperature, sealing the reaction kettle, heating to 122 ℃, carrying out high-temperature hydrolysis reaction for 1h to obtain a sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain a self-made dough glue additive;
weighing 104 parts of polyether polyurethane, 1 part of carboxymethyl cellulose, 6 parts of aminosiloxane LK-536 and 11 parts of self-made face adhesive additive in parts by weight, and placing the materials into a stirring kettle to be stirred for 22min to obtain a face adhesive coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
coating the primer coating on the chamois flannel fabric along the feather direction by a floating knife type coating machine, baking for 1min at 132 ℃, and controlling the dry weight gain to be 6g/m2Then calendering with a calender at a pressure of 7MPa, a temperature of 72 ℃ and a speed of 28m/min, then coating the top coating on the calendered bottom coating with a floating knife type coating machine, baking at 162 ℃ for 1min, and controlling dry-riseThe weight is 8g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede.
Example 3
Crushing the waste chicken feathers in a crusher, sieving the crushed chicken feathers with a 50-mesh sieve, collecting the crushed chicken feathers to obtain a sieved chicken feather crushed material, mixing the sieved chicken feather crushed material and hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture for 2 hours at 64 ℃ to obtain a pre-soaked material;
adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2 hours at 64 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, shaking for reaction for 1 hour, filtering and separating to remove filter residues to obtain a filtrate, and adjusting the pH value to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain a self-made primer additive;
weighing 108 parts of polyether polyurethane, 1 part of carboxymethyl cellulose, 13 parts of polyvinyl alcohol, 4 self-made primer additive and 4 parts of tannic acid in parts by weight, and putting into a stirring kettle to stir for 25min to obtain a primer coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
filling a sodium silicate solution with the mass fraction of 30% into a reaction kettle, dropwise adding hydrochloric acid with the concentration of 1mol/L into the reaction kettle to adjust the pH value to 5, stirring and reacting at normal temperature for 35min, sealing the reaction kettle, heating to 125 ℃, carrying out high-temperature hydrolysis reaction for 2h to obtain a sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain a self-made dough glue additive;
weighing 110 parts of polyether polyurethane, 2 parts of carboxymethyl cellulose, 8 parts of aminosiloxane LK-536 and 13 parts of self-made face glue additive in parts by weight, and placing the materials into a stirring kettle to be stirred for 25min to obtain a face glue coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
coating the primer coating on the chamois flannel fabric along the down direction by a floating knife type coating machine, baking for 1min at 135 ℃, and controlling the dry weight gain to be 7g/m2Then by a calender andcalendering at a pressure of 7MPa, a temperature of 75 deg.C and a speed of 30m/min, coating the top coating on the calendered bottom coating with a floating knife coating machine, baking at 165 deg.C for 1min, and controlling the dry weight gain to 8g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede.
Example 4
Crushing the waste chicken feathers in a crusher, sieving the crushed chicken feathers with a 50-mesh sieve, collecting the crushed chicken feathers to obtain sieved chicken feather powder, mixing the sieved chicken feather powder with hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture for 2 hours at 65 ℃ to obtain a prepreg;
adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2 hours at 65 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, carrying out oscillation reaction for 2 hours, filtering and separating to remove filter residues to obtain a filtrate, and adjusting the pH value to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain a self-made primer additive;
weighing 112 parts of polyether polyurethane, 2 parts of carboxymethyl cellulose, 14 parts of polyvinyl alcohol, 4 parts of self-made primer additive and 4 parts of tannic acid in parts by weight, and putting into a stirring kettle to stir for 28min to obtain a primer coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
filling a sodium silicate solution with the mass fraction of 30% into a reaction kettle, dropwise adding hydrochloric acid with the concentration of 1mol/L into the reaction kettle to adjust the pH value to 5, stirring and reacting for 38min at normal temperature, sealing the reaction kettle, heating to 128 ℃, carrying out high-temperature hydrolysis reaction for 2h to obtain a sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain a self-made dough glue additive;
weighing 116 parts of polyether polyurethane, 2 parts of carboxymethyl cellulose, 9 parts of aminosiloxane LK-536 and 14 parts of self-made face glue additive in parts by weight, and placing the materials into a stirring kettle to be stirred for 28min to obtain a face glue coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
coating the primer coating on the chamois flannel fabric along the down direction by a floating knife type coating machine, baking for 2min at 138 ℃, and controlling the dry weight gain to be 7g/m2Then, calendering the mixture by a calender under the conditions of pressure of 8MPa, temperature of 78 ℃ and speed of 32m/min, then coating the surface glue coating on the calendered bottom layer glue coating by a floating knife type coating machine, baking the coated surface glue coating at 168 ℃ for 2min, and controlling the dry weight gain to be 9g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede.
Example 5
Crushing the waste chicken feathers in a crusher, sieving the crushed chicken feathers with a 50-mesh sieve, collecting the crushed chicken feathers to obtain sieved chicken feather powder, mixing the sieved chicken feather powder with hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture for 3 hours at 70 ℃ to obtain a prepreg;
adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 3 hours at 70 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, shaking for reaction for 2 hours, filtering, separating and removing filter residues to obtain a filtrate, and adjusting the pH value to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain a self-made primer additive;
weighing 120 parts of polyether polyurethane, 2 parts of carboxymethyl cellulose, 15 parts of polyvinyl alcohol, 5 parts of self-made primer additive and 5 parts of tannic acid in parts by weight, and putting the materials into a stirring kettle to stir for 30min to obtain a primer coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
filling a sodium silicate solution with the mass fraction of 30% into a reaction kettle, dropwise adding hydrochloric acid with the concentration of 1mol/L into the reaction kettle to adjust the pH value to 5, stirring and reacting for 40min at normal temperature, sealing the reaction kettle, heating to 130 ℃, carrying out high-temperature hydrolysis reaction for 2h to obtain a sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain a self-made dough glue additive;
weighing 120 parts of polyether polyurethane, 2 parts of carboxymethyl cellulose, 10 parts of aminosiloxane LK-536 and 15 parts of self-made flour glue additive in parts by weight, and placing the materials into a stirring kettle to be stirred for 30min to obtain a flour glue coating; the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane;
coating the primer coating on the chamois flannel fabric along the down direction by a floating knife type coating machine, baking for 2min at 140 ℃, and controlling the dry weight gain to be 8g/m2Then, calendering the mixture by a calender under the conditions of pressure of 8MPa, temperature of 80 ℃ and speed of 35m/min, then coating the surface glue coating on the calendered bottom layer glue coating by a floating knife type coating machine, baking the coated surface glue coating at 170 ℃ for 2min, and controlling the dry weight gain to be 10g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede.
Performance test
Respectively carrying out performance detection on the examples 1-5 of the invention, wherein the detection results are shown in Table 1;
detection method/test method
Fabric strength indicators were tested according to GB/T3923.1-1997 (Break), GB/T3917.3-1997 (ladder tear).
Bending resistance flexibility: the test was carried out as FZ/T01052-1998 (determination of the resistance of the coated fabric to bending).
Specific detection results are shown in table 1:
TABLE 1 Performance test Table
The performance of examples 1-5 were compared, wherein the flexibility strength data of example 5 are the best, since the ratio of the added materials is the highest in example 5, and it is also reflected from the side that the technical solution of the present application is practicable.
Comparative example 1: the comparative example 1 was not supplemented with the self-made primer additive of the present invention, and the other conditions and component ratios were the same as in example 1.
Comparative example 2: the comparative example 2 was not supplemented with the self-made batter additive of the present invention, and the other conditions and component ratios were the same as in example 1.
Comparative example 3: in comparative example 3, the tannic acid of the present invention was not added, and the other conditions and the component ratio were the same as in example 1.
Comparative example 4: comparative example 4 was prepared without adding the aminosilicone LK-536 of the invention, and the other conditions and component ratios were the same as in example 1.
Performance test
Respectively carrying out performance detection on the examples 1-5 of the invention, wherein the detection results are shown in Table 1;
detection method/test method
Fabric strength indicators were tested according to GB/T3923.1-1997 (Break), GB/T3917.3-1997 (ladder tear).
Bending resistance flexibility: the test was carried out as FZ/T01052-1998 (determination of the resistance of the coated fabric to bending).
The specific detection results are shown in table 2:
TABLE 2 Performance test Table
Comparing the test data of the comparative example 1 with the test data of the example 1, the self-made primer additive is not added in the comparative example 1, so that the flexibility strength data and the crack resistance are both obviously reduced, therefore, after the self-made primer additive is used, because the number of disulfide bonds in the chicken feather protein in the self-made primer additive is large, the flexibility is good, and the chicken feather protein has obvious amphipathy, the chicken feather protein has good foaming capability in the coating, on the other hand, the protein colloid has high viscosity, part of peptide chains can extend on a gas-liquid interface to form a two-dimensional protective network, so that the mechanical strength of a foam interface film is increased, the stability of foam can be promoted to be improved, the generated bubbles are dispersed in polyurethane resin to form microbubble aggregates, the generated bubbles are mutually isolated by resin films, adjacent microbubbles are mutually aggregated to form foam, and in the process of baking after the chamois flannel surface is coated, in addition, due to the blocking effect of the bubbles, the primer coating is not easy to permeate into the fabric base layer during coating, so that the primed suede fabric is not rigid, soft and elastic, and the flexibility of the suede material is improved;
compared with the test data of the comparative example 2 and the test data of the example 1, the self-made face glue additive is not added in the comparative example 2, so that the flexibility strength data and the crack resistance are obviously reduced, and therefore, the silica sol in the self-made face glue additive has a plurality of hydroxyl groups, and a crosslinking reaction is carried out in the reaction, so that the tensile strength of the coating can be effectively improved, the distortion and bending resistance of the coating is greatly improved, the self-made face glue additive is rich in silicon oxygen bonds, the silicon oxygen bonds are very soft, the breaking elongation is also improved, and the flexibility of the suede material is favorably increased;
comparing the test data of comparative example 3 with that of example 1, the flexibility strength data and crack resistance are reduced because the comparative example 3 of the present invention is not added with tannic acid, but the comparative example 1 is not reduced much, therefore, the present invention is also added with tannic acid which is tannic acid, the chemical treatment with tannic acid can solidify chicken feather protein into leather, and the toughness and burst resistance of the coating are improved, so that the flexibility of the suede material is further improved, in addition, the resistance of ether linkage free rotation of polyether polyurethane is smaller than C-C, and the ether linkage separates C-C to increase the flexibility of a large molecular chain, so that the flexibility, elasticity and anti-twist bending performance of the primer coating can also be improved;
comparing the test data of comparative example 4 with that of example 1, the flexibility strength data and crack resistance are significantly reduced because the aminosilicone LK-536 is not added in the comparative example 4 of the present invention, and thus it can be seen that the aminosilicone LK-536 can form urethane during the reaction process, which helps to form a polyether polyurethane macromolecular network structure, can enhance the film strength, and further improve the flexibility of the suede material.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A pliable and anti-cracking suede nap is characterized in that: comprises a suede fabric, a primer coating and a face coating, wherein the primer coating and the face coating are coated on the surface of the suede fabric;
the primer coating comprises the following raw materials in parts by weight:
100-120 parts of polyether polyurethane;
1-2 parts of carboxymethyl cellulose;
10-15 parts of polyvinyl alcohol;
3-5 parts of a self-made primer additive;
the surface glue coating comprises the following raw materials in parts by weight:
100-120 parts of polyether polyurethane;
1-2 parts of carboxymethyl cellulose;
10-15 parts of a self-made flour-binding adhesive additive;
the self-made primer additive is prepared by the reaction of chicken feather, hydrochloric acid, sodium bisulfite and sodium hydroxide solution;
the self-made surface glue additive is prepared by reacting sodium silicate solution, hydrochloric acid and acrylic ester.
2. A flexible crack-resistant suede according to claim 1, wherein: the primer coating also comprises 3-5 parts of tannic acid.
3. A flexible crack-resistant suede according to claim 1, wherein: the surface glue coating also comprises 5-10 parts of aminosiloxane LK-536.
4. A flexible crack-resistant suede according to any one of claims 1 to 3, wherein: the polyether polyurethane is any one of FS-800B polyether polyurethane and HU-211 polyether polyurethane.
5. A preparation method of flexible anti-cracking suede is characterized by comprising the following specific preparation steps:
coating the primer coating on the chamois leather velvet fabric along the feather direction by using a floating knife type coating machine, baking for 1-2 min at 130-140 ℃, and controlling the dry weight gain to be 5-8 g/m2Then, calendering by using a calender under the conditions that the pressure is 7-8 MPa, the temperature is 70-80 ℃ and the speed is 25-35 m/min, then coating a surface glue coating on the calendered bottom glue coating by using a floating knife type coating machine, baking for 1-2 min at 160-170 ℃, and controlling the dry weight gain to be 7-10 g/m2And coating the surface glue coating for 2 times, drying the coating, and discharging to obtain the flexible anti-cracking suede.
6. A flexible crack-resistant suede according to claim 1, wherein: the preparation steps of the self-made primer additive are as follows:
(1) putting the waste chicken feathers into a grinder to be ground, sieving the ground chicken feathers by a 50-mesh sieve, collecting the ground chicken feathers to obtain a sieved chicken feather powder, mixing the sieved chicken feather powder and hydrochloric acid with the concentration of 1mol/L according to the mass ratio of 1:8, putting the mixture into a reaction kettle, and soaking the mixture at the temperature of 60-70 ℃ for 2-3 hours to obtain a prepreg;
(2) adding sodium bisulfite with the quality of 10% of the prepreg into the reaction kettle, continuously soaking for 2-3 h at 60-70 ℃ to obtain a soaked product, mixing the soaked product with a sodium hydroxide solution with the concentration of 0.5mol/L according to the mass ratio of 1:10, placing the mixture on a shaking table, carrying out oscillation reaction for 1-2 h, filtering, separating and removing filter residues to obtain a filtrate, and adjusting the pH to be neutral by using hydrochloric acid with the concentration of 0.5mol/L to obtain the self-made primer additive.
7. A flexible crack-resistant suede according to claim 1, wherein: the preparation steps of the self-made flour glue additive are as follows:
filling 30 mass percent sodium silicate solution into a reaction kettle, dropwise adding 1mol/L hydrochloric acid into the reaction kettle to adjust the pH value to 5, stirring and reacting for 30-40 min at normal temperature, sealing the reaction kettle, heating to 120-130 ℃, carrying out high-temperature hydrolysis reaction for 1-2 h to obtain sol solution, and mixing and stirring the sol solution and acrylic ester according to the mass ratio of 10:1 to obtain the self-made dough glue additive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363276.8A CN112553916A (en) | 2020-11-27 | 2020-11-27 | Flexible anti-cracking suede nap and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011363276.8A CN112553916A (en) | 2020-11-27 | 2020-11-27 | Flexible anti-cracking suede nap and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113201152A (en) * | 2021-04-29 | 2021-08-03 | 哈尔滨工业大学 | Preparation method of multi-responsiveness self-healing self-adhesion hydrogel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657981A (en) * | 2013-11-22 | 2014-03-26 | 丹东优耐特纺织品有限公司 | Method for processing faux suede membrana dermalis coating |
| CN110590215A (en) * | 2019-10-22 | 2019-12-20 | 黄金华 | Preparation method of biomass concrete shrinkage reducing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657981A (en) * | 2013-11-22 | 2014-03-26 | 丹东优耐特纺织品有限公司 | Method for processing faux suede membrana dermalis coating |
| CN110590215A (en) * | 2019-10-22 | 2019-12-20 | 黄金华 | Preparation method of biomass concrete shrinkage reducing agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113201152A (en) * | 2021-04-29 | 2021-08-03 | 哈尔滨工业大学 | Preparation method of multi-responsiveness self-healing self-adhesion hydrogel |
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