CN114015818A - Wear-resistant and scratch-resistant leather fabric - Google Patents
Wear-resistant and scratch-resistant leather fabric Download PDFInfo
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- CN114015818A CN114015818A CN202111403231.3A CN202111403231A CN114015818A CN 114015818 A CN114015818 A CN 114015818A CN 202111403231 A CN202111403231 A CN 202111403231A CN 114015818 A CN114015818 A CN 114015818A
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- Prior art keywords
- goat skin
- water
- resistant
- wear
- discharging
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- 239000010985 leather Substances 0.000 title claims abstract description 114
- 239000004744 fabric Substances 0.000 title claims abstract description 41
- 230000003678 scratch resistant effect Effects 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- 238000005406 washing Methods 0.000 claims abstract description 44
- 238000005238 degreasing Methods 0.000 claims abstract description 14
- 238000004043 dyeing Methods 0.000 claims abstract description 11
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 10
- 241000283707 Capra Species 0.000 claims description 164
- 238000007599 discharging Methods 0.000 claims description 54
- 238000002156 mixing Methods 0.000 claims description 35
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 33
- 239000000243 solution Substances 0.000 claims description 28
- 239000007864 aqueous solution Substances 0.000 claims description 27
- 239000011259 mixed solution Substances 0.000 claims description 27
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 18
- 238000002791 soaking Methods 0.000 claims description 18
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 17
- VDNRGELAQDCRPO-UHFFFAOYSA-N diethyl hydroxymethyl phosphate Chemical compound CCOP(=O)(OCC)OCO VDNRGELAQDCRPO-UHFFFAOYSA-N 0.000 claims description 17
- 235000019253 formic acid Nutrition 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- 238000006386 neutralization reaction Methods 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 15
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- 239000011780 sodium chloride Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000010186 staining Methods 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 7
- 239000004359 castor oil Substances 0.000 claims description 7
- 235000019438 castor oil Nutrition 0.000 claims description 7
- 239000013527 degreasing agent Substances 0.000 claims description 7
- 238000005237 degreasing agent Methods 0.000 claims description 7
- 235000021323 fish oil Nutrition 0.000 claims description 7
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000004280 Sodium formate Substances 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 6
- 235000019254 sodium formate Nutrition 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims description 3
- HQVFCQRVQFYGRJ-UHFFFAOYSA-N formic acid;hydrate Chemical compound O.OC=O HQVFCQRVQFYGRJ-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052804 chromium Inorganic materials 0.000 abstract description 9
- 239000011651 chromium Substances 0.000 abstract description 9
- 102000008186 Collagen Human genes 0.000 description 26
- 108010035532 Collagen Proteins 0.000 description 26
- 229920001436 collagen Polymers 0.000 description 26
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 21
- 238000012360 testing method Methods 0.000 description 21
- 239000000835 fiber Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- -1 embossing Substances 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- 102000006395 Globulins Human genes 0.000 description 1
- 108010044091 Globulins Proteins 0.000 description 1
- 108060003393 Granulin Proteins 0.000 description 1
- 108010081750 Reticulin Proteins 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- UCQFCFPECQILOL-UHFFFAOYSA-N diethyl hydrogen phosphate Chemical compound CCOP(O)(=O)OCC UCQFCFPECQILOL-UHFFFAOYSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- FJQXCDYVZAHXNS-UHFFFAOYSA-N methadone hydrochloride Chemical compound Cl.C=1C=CC=CC=1C(CC(C)N(C)C)(C(=O)CC)C1=CC=CC=C1 FJQXCDYVZAHXNS-UHFFFAOYSA-N 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/045—Polysiloxanes containing less than 25 silicon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
- C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
- C08G77/392—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/22—Chemical tanning by organic agents using polymerisation products
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a wear-resistant and scratch-resistant leather fabric, which comprises the following steps of degreasing, washing, neutralizing, washing, retanning, fatliquoring, dyeing and color fixing. The invention obviously improves the thermal stability, the wear resistance and the water resistance of the leather by adding the retanning agent without chromium.
Description
Technical Field
The invention relates to the technical field of leather processing, in particular to a wear-resistant and scratch-resistant leather fabric.
Background
Leather is an important material with high added value, and can be divided into genuine leather, regenerated leather, artificial leather and synthetic leather according to a preparation method, wherein the leather industry covers the main industries of leather making, shoes making, fur clothing, leather pieces, fur and products thereof, and the matching industries of leather chemical industry, leather hardware, leather machinery, auxiliary materials and the like. In recent years, with the development of social economy, the leather industry has a greater and greater proportion in the light industry, which not only promotes the rapid development of the economy of China, but also improves the consumption level of people to a great extent. Modern fashion leather products play an indispensable role in people's life. Consumers not only pursue the fashion leather appearance, but also gradually improve the performance requirements of the leather, and the improvement of the leather performance can obviously improve the grade of the leather products, and the improvement becomes one of the important directions of the development of the leather industry.
Natural leather is a natural polymer material suitable for military needs, industry and people's life, which is produced by a series of physical and chemical processes of animal raw leather based on protein to change the properties of the raw leather and remarkably improve the service performance. The raw leather contains fibrin (collagen fibers, elastic fibers, and reticular fibers), globulin, fat, saccharides, and raw leather matrix protein, but the main component of the finished leather after processing is collagen fibers. During the whole tanning process, the hides undergo a series of physicochemical treatments in which the various other constituents of the hides are destroyed and removed after degreasing, liming, deliming and bating, pickling, tanning, neutralization, retanning, stuffing fatliquoring, dyeing, etc., leaving only the collagen fibres and the basic organization of the collagen fibres, which are the parts necessary for the manufacture of the hides. In all the working procedures, the tanning process is the most important, animal hides can be converted into leather through a tanning agent, in the conversion process, a kneading agent is required to be added to modify leather fibers, the tanning agent is a substance which can react with collagen fibers to convert the hides into the leather, so that the leather is soft, firm, water-resistant, heat-resistant and corrosion-resistant, can be crosslinked with the leather fibers, the leather fiber structure is more stable, and the service performance of the leather can be further improved.
The chrome tanning agent is the most mature leather chemical with the highest cost performance and the most extensive application in the global leather industry at present. The trivalent chromium complex penetrates into the collagen fibers to form multi-point coordination bonds with two or more carboxyl groups in the collagen fibers. However, among the pollutants generated in the leather industry, chromium has the highest toxicity, because the tanning agent absorption rate of the chromium tanning method is low in the tanning process, more chromium remains in the tanning waste liquid, chromium in the leather is continuously released in the subsequent finishing process, and unreduced chromium or chromium oxide attached to the leather product directly damages the skin of a human body to induce various diseases. Under the conditions of emphasizing green production and increasing environmental protection pressure, the development of environment-friendly chrome tanning process or chrome-free tanning material is an important direction for further development of leather industry. Leather products produced in the market at present are easy to wear in the using process and scratch the leather surface when in use.
CN 103525957A discloses a production method of wear-resistant leather, which comprises the steps of taking full leather, and sequentially carrying out primary coating, embossing, intermediate coating, top coating, drum throwing and color fixing. Wherein, the first coating step uses an embosser to emboss; in the intermediate coating step, black dye water is dissolved in water and then is sprayed; in the top coating step, acetone is used for manual wiping treatment, and then a leather hand feeling agent is used for spraying treatment after being dissolved in water. The leather finished product obtained by the method is wear-resistant, and the coating on the surface of the leather body is not easy to wear in the using process. The acetone solvent used in the invention is easy to volatilize, pollutes the environment and is harmful to human bodies.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a chrome-free tanning agent, which effectively improves the wear resistance of natural leather fabric.
In order to achieve the purpose, the invention provides a wear-resistant and scratch-resistant leather fabric which does not contain chromium and has good thermal stability, wear resistance and water resistance.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
a preparation process of a wear-resistant scratch-resistant leather fabric comprises the following steps:
s1 degreasing of goat skin: immersing the goat skin in a degreasing agent for pickling, adjusting the pH of the system to 2-3, stirring for 2-3h, and discharging liquid to obtain degreased goat skin;
s2 washing the goat skin: washing the goat skin with water to obtain washed goat skin;
s3 neutralization: mixing water-washed goat skin with water, treating with a neutralizing solution, adjusting the pH value of the mixed solution to 6-7, and discharging the liquid after stirring to obtain neutralized goat skin;
s4 water washing: washing the neutralized goat skin with water to obtain secondary washed goat skin;
s5 retanning: mixing the washed goat skin obtained in the step S4 with water and a retanning agent, soaking at 30-40 ℃ for 1-2h, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking retanned goat skin in water of 40-60 deg.C, adding fatting agent, stirring, and discharging water to obtain fatted goat skin;
s7 staining: mixing the fatted goat skin with water, adding a dye for dyeing for 1-2h, and discharging the dye to obtain the dyed goat skin;
s8 color fixation: mixing the dyed goat skin with water, and fixing color with formic acid water solution for 20-30 min; discharging the liquid; washing with water at 40-60 ℃ for 2-3 times, and drying to obtain the wear-resistant and scratch-resistant leather fabric.
Preferably, the preparation process of the wear-resistant and scratch-resistant leather fabric comprises the following steps:
s1 degreasing: placing the goat skin in a rotary drum, adding a degreasing agent for pickling, adding 20-30 wt% formic acid aqueous solution to adjust the pH of the mixed solution to 2-3, placing the mixed solution in a rotary drum, rotating for 2-3h, and discharging the liquid to obtain degreased goat skin;
s2 water washing: washing the degreased goat skin with 2-3 times of water by mass for 2-3 times, and discharging the water to obtain washed goat skin;
s3 neutralization: mixing the washed goat skin with 2-3 times of water, treating with neutralizing solution, adjusting pH to 6-7, rotating at 20-40 deg.C for 1-2 hr, and discharging the liquid to obtain neutralized goat skin;
s4 water washing: washing the neutralized goat skin with 2-3 times of water by mass for 2-3 times, and draining to obtain secondary washed goat skin;
s5 retanning: mixing the washed goat skin obtained in the step S4 with water and a retanning agent in an amount which is 2-3 times the mass of the washed goat skin, soaking the mixture at 30-40 ℃ for 1-2 hours, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking retanned goat skin in 2-3 times of water of 40-60 deg.C, adding fatting agent, rotating for 0.5-1 hr, and discharging the fatting agent to obtain fatted goat skin;
s7 staining: mixing the fatted goat skin with 2-3 times of water by mass, adding a dye for dyeing for 1-2h, and discharging the dye to obtain the dyed goat skin;
s8 color fixation: mixing the dyed goat skin with 2-3 times of water, and fixing the color for 20-30min by using 10-20 wt% formic acid aqueous solution; discharging the liquid; washing with water 2-3 times of the weight of the goat skin at 40-60 ℃ for 2-3 times, and drying in a drying oven at 50-70 ℃ for 6-8h to obtain the wear-resistant scratch-resistant leather fabric.
In the step S1, the degreasing agent is 5-10 wt% of sodium chloride aqueous solution, and the dosage ratio of the goat skin to the degreasing agent is 1: 10-20.
And the neutralization solution in the step S3 is a mixture of sodium formate and sodium bicarbonate with the mass ratio of 1-2: 2-3.
The using amount ratio of the goat skin to the retanning agent in the step S5 is 20-30: 1; the retanning agent is prepared from the following components in a mass ratio of 1-2: 1-2 polyhedral oligomeric silsesquioxane and diethyl hydroxymethylphosphate; more preferred retanning agents are those with a mass ratio of 1-2: 1-2 of a mixture of hydroxyl grafted polyhedral oligomeric silsesquioxane and diethyl hydroxymethylphosphate;
the preparation method of the polyhedral oligomeric silsesquioxane comprises the following steps:
mixing 50-60g of gamma-aminopropyltriethoxysilane with 200-300mL of cyclohexane; adding 30-40mL of 30-40 wt% hydrochloric acid into the mixed solution; and heating the solution to 50-80 ℃, reacting for 48-72h, and then decompressing and steaming to remove the solvent to obtain the polyhedral oligomeric silsesquioxane.
The preparation method of the hydroxyl grafted polyhedral oligomeric silsesquioxane comprises the following steps:
adding 1-1.2g of octavinyl polyhedral oligomeric silsesquioxane and 2.2-2.5g of 2-mercaptoethanol into 20-30mL of tetrahydrofuran solution, and stirring for 10-20min to obtain a mixed solution; adding 0.1-0.2g of dimethylolpropionic acid into the mixed solution; then placing the reaction solution under an ultraviolet lamp with the wavelength of 365nm for irradiation reaction for 1-2 h; and after the irradiation is finished, concentrating the reaction solution under reduced pressure, adding 50-100mL of anhydrous ether into the concentrated product, separating out a precipitate, filtering and collecting filter residue, and drying the filter residue in a vacuum drying oven at 30-40 ℃ for 20-24h to obtain the hydroxyl grafted polyhedral oligomeric silsesquioxane.
Polyhedral oligomeric silsesquioxane (POSS) is an inorganic-organic hybrid molecule which is composed of a structural framework consisting of Si-O-Si and a modifiable organic side chain connected with Si atoms. The hybrid molecule has various three-dimensional inorganic cage-like structures, the hydroxyl grafted polyhedral oligomeric silsesquioxane is prepared by using octavinyl polyhedral oligomeric silsesquioxane as a raw material, the tail end of the hydroxyl grafted polyhedral oligomeric silsesquioxane molecule is provided with eight hydroxyl groups, and part of the hydroxyl groups can interact with active groups such as carboxyl, amino and the like in the sheepskin collagen, so that multi-site combination is favorably formed; the molecule of the diethyl hydroxymethyl phosphate can react with the amino group in the collagen to form a short and strong covalent bond, meanwhile, the diethyl hydroxymethyl phosphate is also combined with a peptide bond in the collagen, in addition, the diethyl hydroxymethyl phosphate also interacts with redundant hydroxyl at the tail end of the polyhedral oligomeric silsesquioxane molecule, the polyhedral oligomeric silsesquioxane molecule is deposited among the collagen molecules, and the micromolecular diethyl hydroxymethyl phosphate can be deposited on the collagen fiber to form a large amount of compact intramolecular and intermolecular cross-linked network structures in the collagen fiber, so that the stability of the collagen fiber of the leather is improved, the compact cross-linked structure simultaneously improves the mechanical property of the leather, and meanwhile, the diethyl hydroxymethyl phosphate is used as a flame retardant to endow the leather with flame retardant property.
In the step S6, the fatliquor is a mixture of castor oil phosphate and sulfited fish oil in a mass ratio of 2-3:1-2, and the using amount of the fatliquor is 0.2-0.3% of the mass of the goat skin; the fatted leather is soft and plump, does not generate hair, and can improve the tensile strength and the elongation percentage of the leather.
The dye in the step S7 is purchased from Technology development Co., Ltd, type is Beige NA, and the amount is 0.4-0.7% of the goat skin.
The using amount of the formic acid aqueous solution in the step S8 is 0.2-0.4% of the mass of the goat skin.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the goat skin is treated by the processes of pickling, washing, neutralizing, washing, retanning, greasing, dyeing, fixation, drying and the like to prepare the wear-resistant and scratch-resistant leather fabric, a compound of hydroxyl graft modified polyhedral oligomeric silsesquioxane and diethyl hydroxymethyl phosphate in a specific mass ratio is used in the retanning process, the compound tanning agent does not contain harmful element chromium, a large number of densified intramolecular and intermolecular cross-linked network structures are formed in collagen fibers through the synergistic effect of the hydroxyl graft modified polyhedral oligomeric silsesquioxane and the diethyl hydroxymethyl phosphate, the stability and the mechanical property of leather collagen fibers are improved, and meanwhile, the leather is endowed with flame retardance by the diethyl hydroxymethyl phosphate serving as a flame retardant.
Detailed Description
The invention uses part of raw materials with the following sources:
the goat skin is purchased from Yangzhou goat wool products Co., Ltd, has a thickness of 1.0-1.2cm and a model number of yly 201967.
Octavinyl polyhedral oligomeric silsesquioxanes, purchased from Shanghai Gillede New Material science and technology, Inc., with a purity of 99%.
The hydroxymethyl diethyl phosphate is purchased from Wuhanhao Rong Biotechnology limited, the purity of which is 99 percent, and the CAS number is 3084-40-0.
Castor oil phosphate, purchased from haian petrochemical plants in Jiangsu province.
Sulfited fish oil, purchased from leather chemical plants in Zhejiang province.
Example 1
A preparation process of a wear-resistant scratch-resistant leather fabric comprises the following steps:
s1 degreasing: putting the goat skin into a rotary drum, adding 10 wt% of sodium chloride aqueous solution for degreasing treatment, wherein the amount of the sodium chloride aqueous solution is 15 times of the mass of the goat skin, adding 30 wt% of formic acid aqueous solution to adjust the pH of the mixed solution to 2, putting the mixed solution into a drum, rotating for 2 hours, and discharging the liquid to obtain degreased goat skin;
s2 water washing: washing the degreased goat skin with water 2 times of the mass of the goat skin, and discharging water for 2-3 times to obtain the washed goat skin;
s3 neutralization: mixing the washed goat skin with 2 times of water, treating with a neutralizing solution, adjusting the pH value of the mixed solution to 6, rotating at 40 ℃ for 2h, and discharging the liquid to obtain neutralized goat skin; the neutralization solution is a mixture of sodium formate and sodium bicarbonate with the mass ratio of 2: 3;
s4 water washing: washing the neutralized goat skin with 2 times of water by mass for 3 times, and draining to obtain secondary washed goat skin;
s5 retanning: mixing the water-washed goat skin obtained in the step S4 with 2 times of water and a retanning agent, soaking at 40 ℃ for 1h, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking the retanned goat skin in 2 times of 60 deg.C water, adding fat-liquoring agent, rotating for 1 hr, and discharging the fat-liquoring agent to obtain fat-liquored goat skin; the fatting agent is a mixture of castor oil phosphate and sulfited fish oil in a mass ratio of 2:1, and the using amount of the fatting agent is 0.3% of the mass of the goat skin;
s7 staining: mixing the fatted goat skin with 2 times of water by mass, adding a dye for dyeing for 2h, and discharging the dye to obtain the dyed goat skin; the using amount of the dye is 0.5 percent of the mass of the goat skin;
s8 color fixation: mixing the dyed goat skin with 2 times of water, and fixing the color for 30min by using 20 wt% formic acid aqueous solution; discharging the liquid; washing with water at 60 ℃ which is 2 times of the mass of the goat skin for 3 times, and drying in a drying oven at 60 ℃ for 8 hours to obtain the wear-resistant scratch-resistant leather fabric; the using amount of the formic acid aqueous solution is 0.3 percent of the mass of the goat skin.
The retanning agent in the step S5 is polyhedral oligomeric silsesquioxane, and the preparation method comprises the following steps:
mixing 50g of gamma-aminopropyltriethoxysilane with 200mL of cyclohexane; adding 30mL of 30 wt% hydrochloric acid into the mixed solution; and heating the solution to 70 ℃, reacting for 72 hours, and then decompressing and steaming to remove the solvent to obtain the polyhedral oligomeric silsesquioxane.
Example 2
A preparation process of a wear-resistant scratch-resistant leather fabric comprises the following steps:
s1 degreasing: putting the goat skin into a rotary drum, adding 10 wt% of sodium chloride aqueous solution for degreasing treatment, wherein the amount of the sodium chloride aqueous solution is 15 times of the mass of the goat skin, adding 30 wt% of formic acid aqueous solution to adjust the pH of the mixed solution to 2, putting the mixed solution into a drum, rotating for 2 hours, and discharging the liquid to obtain degreased goat skin;
s2 water washing: washing the degreased goat skin with water 2 times of the mass of the goat skin, and discharging water for 2-3 times to obtain the washed goat skin;
s3 neutralization: mixing the washed goat skin with 2 times of water, treating with a neutralizing solution, adjusting the pH value of the mixed solution to 6, rotating at 40 ℃ for 2h, and discharging the liquid to obtain neutralized goat skin; the neutralization solution is a mixture of sodium formate and sodium bicarbonate with the mass ratio of 2: 3;
s4 water washing: washing the neutralized goat skin with 2 times of water by mass for 3 times, and draining to obtain secondary washed goat skin;
s5 retanning: mixing the water-washed goat skin obtained in the step S4 with 2 times of water and a retanning agent, soaking at 40 ℃ for 1h, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking the retanned goat skin in 2 times of 60 deg.C water, adding fat-liquoring agent, rotating for 1 hr, and discharging the fat-liquoring agent to obtain fat-liquored goat skin; the fatting agent is a mixture of castor oil phosphate and sulfited fish oil in a mass ratio of 2:1, and the using amount of the fatting agent is 0.3% of the mass of the goat skin;
s7 staining: mixing the fatted goat skin with 2 times of water by mass, adding a dye for dyeing for 2h, and discharging the dye to obtain the dyed goat skin; the using amount of the dye is 0.5 percent of the mass of the goat skin;
s8 color fixation: mixing the dyed goat skin with 2 times of water, and fixing the color for 30min by using 20 wt% formic acid aqueous solution; discharging the liquid; washing with water at 60 ℃ which is 2 times of the mass of the goat skin for 3 times, and drying in a drying oven at 60 ℃ for 8 hours to obtain the wear-resistant scratch-resistant leather fabric; the using amount of the formic acid aqueous solution is 0.3 percent of the mass of the goat skin.
The retanning agent in the step S5 is diethyl hydroxymethyl phosphate.
Example 3
A preparation process of a wear-resistant scratch-resistant leather fabric comprises the following steps:
s1 degreasing: putting the goat skin into a rotary drum, adding 10 wt% of sodium chloride aqueous solution for degreasing treatment, wherein the amount of the sodium chloride aqueous solution is 15 times of the mass of the goat skin, adding 30 wt% of formic acid aqueous solution to adjust the pH of the mixed solution to 2, putting the mixed solution into a drum, rotating for 2 hours, and discharging the liquid to obtain degreased goat skin;
s2 water washing: washing the degreased goat skin with water 2 times of the mass of the goat skin, and discharging water for 2-3 times to obtain the washed goat skin;
s3 neutralization: mixing the washed goat skin with 2 times of water, treating with a neutralizing solution, adjusting the pH value of the mixed solution to 6, rotating at 40 ℃ for 2h, and discharging the liquid to obtain neutralized goat skin; the neutralization solution is a mixture of sodium formate and sodium bicarbonate with the mass ratio of 2: 3;
s4 water washing: washing the neutralized goat skin with 2 times of water by mass for 3 times, and draining to obtain secondary washed goat skin;
s5 retanning: mixing the water-washed goat skin obtained in the step S4 with 2 times of water and a retanning agent, soaking at 40 ℃ for 1h, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking the retanned goat skin in 2 times of 60 deg.C water, adding fat-liquoring agent, rotating for 1 hr, and discharging the fat-liquoring agent to obtain fat-liquored goat skin; the fatting agent is a mixture of castor oil phosphate and sulfited fish oil in a mass ratio of 2:1, and the using amount of the fatting agent is 0.3% of the mass of the goat skin;
s7 staining: mixing the fatted goat skin with 2 times of water by mass, adding a dye for dyeing for 2h, and discharging the dye to obtain the dyed goat skin; the using amount of the dye is 0.5 percent of the mass of the goat skin;
s8 color fixation: mixing the dyed goat skin with 2 times of water, and fixing the color for 30min by using 20 wt% formic acid aqueous solution; discharging the liquid; washing with water at 60 ℃ which is 2 times of the mass of the goat skin for 3 times, and drying in a drying oven at 60 ℃ for 8 hours to obtain the wear-resistant scratch-resistant leather fabric; the using amount of the formic acid aqueous solution is 0.3 percent of the mass of the goat skin.
The retanning agent in the step S5 is hydroxyl grafted polyhedral oligomeric silsesquioxane, and the preparation method comprises the following steps: adding 1.2g of octavinyl polyhedral oligomeric silsesquioxane and 2.2g of 2-mercaptoethanol into 30mL of tetrahydrofuran solution, and stirring for 20min to obtain a mixed solution; adding 0.2g of dimethylolpropionic acid serving as a photoinitiator into the mixed solution; then placing the reaction solution under an ultraviolet lamp with the wavelength of 365nm for irradiation reaction for 1 h; and after the irradiation is finished, concentrating the reaction solution under reduced pressure, adding 100mL of anhydrous ether into the concentrated product, precipitating out a precipitate, filtering and collecting filter residue, and drying the filter residue in a vacuum drying oven at 30 ℃ for 24 hours to obtain the hydroxyl grafted polyhedral oligomeric silsesquioxane.
Example 4
A preparation process of a wear-resistant scratch-resistant leather fabric comprises the following steps:
s1 degreasing: putting the goat skin into a rotary drum, adding 10 wt% of sodium chloride aqueous solution for degreasing treatment, wherein the amount of the sodium chloride aqueous solution is 15 times of the mass of the goat skin, adding 30 wt% of formic acid aqueous solution to adjust the pH of the mixed solution to 2, putting the mixed solution into a drum, rotating for 2 hours, and discharging the liquid to obtain degreased goat skin;
s2 water washing: washing the degreased goat skin with water 2 times of the mass of the goat skin, and discharging water for 2-3 times to obtain the washed goat skin;
s3 neutralization: mixing the washed goat skin with 2 times of water, treating with a neutralizing solution, adjusting the pH value of the mixed solution to 6, rotating at 40 ℃ for 2h, and discharging the liquid to obtain neutralized goat skin; the neutralization solution is a mixture of sodium formate and sodium bicarbonate with the mass ratio of 2: 3;
s4 water washing: washing the neutralized goat skin with 2 times of water by mass for 3 times, and draining to obtain secondary washed goat skin;
s5 retanning: mixing the water-washed goat skin obtained in the step S4 with 2 times of water and a retanning agent, soaking at 40 ℃ for 1h, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking the retanned goat skin in 2 times of 60 deg.C water, adding fat-liquoring agent, rotating for 1 hr, and discharging the fat-liquoring agent to obtain fat-liquored goat skin; the fatting agent is a mixture of castor oil phosphate and sulfited fish oil in a mass ratio of 2:1, and the using amount of the fatting agent is 0.3% of the mass of the goat skin;
s7 staining: mixing the fatted goat skin with 2 times of water by mass, adding a dye for dyeing for 2h, and discharging the dye to obtain the dyed goat skin; the using amount of the dye is 0.5 percent of the mass of the goat skin;
s8 color fixation: mixing the dyed goat skin with 2 times of water, and fixing the color for 30min by using 20 wt% formic acid aqueous solution; discharging the liquid; washing with water at 60 ℃ which is 2 times of the mass of the goat skin for 3 times, and drying in a drying oven at 60 ℃ for 8 hours to obtain the wear-resistant scratch-resistant leather fabric; the using amount of the formic acid aqueous solution is 0.3 percent of the mass of the goat skin.
The retanning agent in the step S5 is a mixture of hydroxyl grafted polyhedral oligomeric silsesquioxane and diethyl hydroxymethyl phosphate in a mass ratio of 1: 1.2; the preparation method of the hydroxyl grafted polyhedral oligomeric silsesquioxane comprises the following steps: adding 1.2g of octavinyl polyhedral oligomeric silsesquioxane and 2.2g of 2-mercaptoethanol into 30mL of tetrahydrofuran solution, and stirring for 20min to obtain a mixed solution; adding 0.2g of dimethylolpropionic acid serving as a photoinitiator into the mixed solution; then placing the reaction solution under an ultraviolet lamp with the wavelength of 365nm for irradiation reaction for 1 h; and after the irradiation is finished, concentrating the reaction solution under reduced pressure, adding 100mL of anhydrous ether into the concentrated product, precipitating out a precipitate, filtering and collecting filter residue, and drying the filter residue in a vacuum drying oven at 30 ℃ for 24 hours to obtain the hydroxyl grafted polyhedral oligomeric silsesquioxane.
Test example 1
And (3) testing thermal stability: the wear-resistant and scratch-resistant leather fabrics prepared in the examples 1 to 4 were subjected to a thermal stability test, in which the test procedure was to set a temperature rise rate of 10 ℃/min and a nitrogen flow rate of 60mL/min in a nitrogen atmosphere at 25 to 600 ℃, and 5 to 10mg of leather was weighed for a thermogravimetric test. The test results are shown in table 1:
table 1: test result of thermal stability of wear-resistant and scratch-resistant leather fabric
| Ti/℃ | Tmax/℃ | |
| Example 1 | 203.2 | 310.4 |
| Example 2 | 226.9 | 338.7 |
| Example 3 | 233.6 | 350.4 |
| Example 4 | 250.9 | 370.8 |
As can be seen from the data in table 1, the abrasion and scratch resistant leather facing prepared in example 4 has the best thermal stability, and example 4 is different from other examples in that hydroxyl grafted polyhedral oligomeric silsesquioxane and diethyl hydroxymethyl phosphate are added. The possible reason is that hydroxyl grafted polyhedral oligomeric silsesquioxane molecules can interact with active groups such as carboxyl, amino and the like in the goat skin collagen; the hydroxy methyl diethyl phosphate molecule can react with amino in collagen to form a short and strong covalent bond, meanwhile, the hydroxy methyl diethyl phosphate is also combined with a peptide bond in the collagen, in addition, the hydroxy methyl diethyl phosphate also interacts with redundant hydroxyl at the tail end of the polyhedral oligomeric silsesquioxane molecule, the hydroxyl grafted polyhedral oligomeric silsesquioxane molecule is deposited among collagen molecules, the small molecule hydroxy methyl diethyl phosphate can be deposited on the collagen fiber, a large amount of densified intramolecular and intermolecular cross-linked network structures are formed in the collagen fiber, and the synergistic effect of the two substances improves the stability of the leather collagen fiber.
Test example 2
Determination of abrasion resistance: by Martindale friction testThe prepared wear-resistant and scratch-resistant leather fabric is tested for wear resistance according to the test standard QB/T2726-2005 determination of wear resistance in physical and mechanical tests of leather, and the specific test method is as follows: the mass (m) of the sample is obtained before the test1) Fixing the sample on a testing instrument, pressing a grinding wheel on the testing instrument, setting the rotating speed to be 1000r/min (the leather is not completely ground in the testing revolution), and weighing the mass (m) of the sample again after the test is finished2)，m1And m2The difference is the leather abrasion, each group of tests 3 samples, and the test result is the average value of the 3 samples. The test results are shown in table 2:
table 2: abrasion resistance test result of abrasion-resistant and scratch-resistant leather fabric
The smaller the mass loss before and after the material is worn, the better the wear resistance of the material is, and as can be seen from the data in table 2, the wear-resistant and scratch-resistant leather fabric prepared in example 4 has better wear resistance, and the possible reason is that a large amount of densified intramolecular and intermolecular cross-linked network structures are formed in collagen fibers through the synergistic effect of hydroxyl graft modified polyhedral oligomeric silsesquioxane and diethyl hydroxymethylphosphate, so that the molecular structure in the leather becomes dense, the mechanical property of the leather fabric is improved, and the wear resistance of the leather is also improved.
Test example 3
And (3) testing water resistance: the leather fabrics of the wear-resistant and scratch-resistant leathers prepared in examples 1 to 4 were cut into 1cm × 1cm, dried at 80 ℃ to constant weight, and the leather mass was accurately weighed to m0Soaking leather in water at 30 deg.c for 24 hr, wiping out the water from the surface of the leather, weighing quickly and recording the leather mass as m1The water absorption of leather is calculated according to the following formula:
W＝(m1-m0)/m0×100％
in the formula: w is the water absorption (%) of the leather;
m1is leatherMass after water absorption and swelling;
m0the mass (g) of the leather before soaking.
The test results are shown in table 3:
table 3: water resistance test result of wear-resistant and scratch-resistant leather fabric
| Water absorption (%) | |
| Example 1 | 62 |
| Example 2 | 68 |
| Example 3 | 45 |
| Example 4 | 31 |
The water resistance of leather is mainly characterized by water absorption rate, and the presence of water in the leather affects the aggregation structure of collagen molecules in the leather, thereby affecting various performances and service life of the leather, so that the water absorption rate of the leather needs to be reduced. From the experimental data in table 3, it can be seen that the wear-resistant and scratch-resistant leather fabric prepared in example 4 also has good water resistance, and the probable reason is that a large number of densified intramolecular and intermolecular cross-linked network structures are formed in the collagen fibers through the synergistic effect of the hydroxyl graft modified polyhedral oligomeric silsesquioxane and the diethyl hydroxymethylphosphate, so that the molecular structure in the leather becomes dense, the entry of water molecules is blocked, the water absorption rate of the leather fabric is reduced, and the water resistance is improved.
Claims (9)
1. The preparation process of the wear-resistant scratch-resistant leather fabric is characterized by comprising the following steps of:
s1 degreasing of goat skin: immersing the goat skin in a degreasing agent for pickling, adjusting the pH of the system to 2-3, stirring for 2-3h, and discharging liquid to obtain degreased goat skin;
s2 washing the goat skin: washing the goat skin with water to obtain washed goat skin;
s3 neutralization: mixing water-washed goat skin with water, treating with a neutralizing solution, adjusting the pH value of the mixed solution to 6-7, and discharging the liquid after stirring to obtain neutralized goat skin;
s4 water washing: washing the neutralized goat skin with water to obtain secondary washed goat skin;
s5 retanning: mixing the washed goat skin obtained in the step S4 with water and a retanning agent, soaking at 30-40 ℃ for 1-2h, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking retanned goat skin in water of 40-60 deg.C, adding fatting agent, stirring, and discharging water to obtain fatted goat skin;
s7 staining: mixing the fatted goat skin with water, adding a dye for dyeing for 1-2h, and discharging the dye to obtain the dyed goat skin;
s8 color fixation: mixing the dyed goat skin with water, and fixing color with formic acid water solution for 20-30 min; discharging the liquid; washing with water at 40-60 ℃ for 2-3 times, and drying to obtain the wear-resistant and scratch-resistant leather fabric.
2. The preparation process of the wear-resistant scratch-resistant leather fabric is characterized by comprising the following steps of:
s1 degreasing of goat skin: placing the goat skin in a rotary drum, adding a degreasing agent for pickling, adding 20-30 wt% formic acid aqueous solution to adjust the pH of the mixed solution to 2-3, placing the mixed solution in a rotary drum, rotating for 2-3h, and discharging the liquid to obtain degreased goat skin;
s2 washing the goat skin: washing the degreased goat skin with 2-3 times of water by mass for 2-3 times, and discharging the water to obtain washed goat skin;
s3 neutralization: mixing the washed goat skin with 2-3 times of water, treating with neutralizing solution, adjusting pH to 6-7, rotating at 20-40 deg.C for 1-2 hr, and discharging the liquid to obtain neutralized goat skin;
s4 water washing: washing the neutralized goat skin with 2-3 times of water by mass for 2-3 times, and draining to obtain secondary washed goat skin;
s5 retanning: mixing the washed goat skin obtained in the step S4 with water and a retanning agent in an amount which is 2-3 times the mass of the washed goat skin, soaking the mixture at 30-40 ℃ for 1-2 hours, and discharging liquid to obtain retanned goat skin;
s6 fat liquoring: soaking retanned goat skin in 2-3 times of water of 40-60 deg.C, adding fatting agent, rotating for 0.5-1 hr, and discharging the fatting agent to obtain fatted goat skin;
s7 staining: mixing the fatted goat skin with 2-3 times of water by mass, adding a dye for dyeing for 1-2h, and discharging the dye to obtain the dyed goat skin;
s8 color fixation: mixing the dyed goat skin with 2-3 times of water, and fixing the color for 20-30min by using 10-20 wt% formic acid aqueous solution; discharging the liquid; washing with water 2-3 times of the weight of the goat skin at 40-60 ℃ for 2-3 times, and drying in a drying oven at 50-70 ℃ for 6-8h to obtain the wear-resistant scratch-resistant leather fabric.
3. The process for preparing a wear-resistant and scratch-resistant leather fabric according to claim 1, wherein: and the degreasing agent in the step S1 is a 5-10 wt% sodium chloride aqueous solution.
4. The process for preparing a wear-resistant and scratch-resistant leather fabric according to claim 1, wherein: and the neutralization solution in the step S3 is a mixture of sodium formate and sodium bicarbonate with the mass ratio of 1-2: 2-3.
5. The process for preparing a wear-resistant and scratch-resistant leather fabric according to claim 1, wherein: the dosage ratio of the goat skin to the retanning agent in the step S5 is 20-30: 1.
6. The process for preparing a wear-resistant and scratch-resistant leather fabric according to claim 1, wherein: the retanning agent in the step S5 is a compound of polyhedral oligomeric silsesquioxane and diethyl hydroxymethylphosphate.
7. The process for preparing a wear and scratch resistant leather fabric according to claim 6, wherein the polyhedral oligomeric silsesquioxane is prepared by the following steps: mixing 50-60g of gamma-aminopropyltriethoxysilane with 200-300mL of cyclohexane; adding 30-40mL of 30-40 wt% hydrochloric acid into the mixed solution; and heating the solution to 50-80 ℃, reacting for 48-72h, and then decompressing and steaming to remove the solvent to obtain the polyhedral oligomeric silsesquioxane.
8. The process for preparing a wear-resistant and scratch-resistant leather fabric according to claim 1, wherein: and in the step S6, the fat liquor is a mixture of castor oil phosphate and sulfited fish oil.
9. A wear-resistant and scratch-resistant leather fabric prepared by the preparation process of the wear-resistant and scratch-resistant leather fabric according to any one of claims 1 to 8.
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