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CN-118726666-B - Antibacterial leather fabric and preparation method thereof

CN118726666BCN 118726666 BCN118726666 BCN 118726666BCN-118726666-B

Abstract

The invention discloses a bacteriostatic leather fabric and a preparation method thereof, wherein animal hides are firstly degreased by degreasing agent solution to obtain degreased leather; the method comprises the steps of washing, neutralizing, washing to obtain secondary washed leather, immersing the secondary washed leather in antibacterial liquid completely, immersing to obtain antibacterial treated leather, retanning the antibacterial treated leather by using a retanning agent to obtain retanning treated leather, fatliquoring the retanning treated leather by using a fatliquoring agent, dyeing and fixing colors. The leather fabric obtained by the invention has excellent antibacterial effect, and the service life of the leather fabric is prolonged.

Inventors

  • LI MINJIE
  • LI SONG
  • HUANG YAOHUI
  • Shi Leyao

Assignees

  • 河北东明牛皮制革有限公司

Dates

Publication Date
20260508
Application Date
20240806

Claims (8)

  1. 1. The preparation method of the antibacterial leather fabric is characterized by comprising the following specific steps of: S1, degreasing animal hides by using a degreasing agent solution to obtain degreased leather; s2, primary washing, neutralization and secondary washing to obtain secondary washing skin; S3, immersing the secondary water-washed skin in the antibacterial liquid completely, and carrying out immersion treatment to obtain antibacterial treated skin; s4, retanning the antibacterial treated leather by using a retanning agent to obtain retanning treated leather; s5, finally, fatliquoring treatment, dyeing and fixation are carried out on the retanning treated leather by using a fatliquor, so that the antibacterial leather fabric is obtained; in the step S1, the degreasing agent solution is prepared by mixing 3-4 parts of 1-butyl-3-methylimidazole chloride, 4-5 parts of 1-butyl-3-methylimidazole hexafluorophosphate, 8-10 parts of decyl glucoside and 100 parts of animal fur waste extracting solution; in step S3, the antibacterial solution is prepared by the following method: (A) Firstly, drying agave until the water content is lower than 5wt%, and crushing the agave until the water content is 80-100 meshes to obtain agave powder; (B) Stirring and dispersing agave powder in water of which the weight is 20-25 times that of the agave powder, radiating for 10-12 minutes by using 600-750W microwaves, and filtering to obtain filtrate; (C) And finally, adding chitosan modified nano hydroxyapatite into the filtrate, and carrying out ultrasonic oscillation treatment for 30-40 minutes at 300-400W to obtain the antibacterial liquid.
  2. 2. The method according to claim 1, wherein in step S1, the animal hide is selected from any one of cow hide, pig hide, sheep hide.
  3. 3. The method according to claim 1, wherein in step S1, the animal hide is completely immersed in a degreasing agent solution of 12 to 15 times by weight of the animal hide after being washed, the animal hide is left for 2 to 3 hours, ph=2 to 3 is adjusted by using a formic acid aqueous solution with a mass concentration of 20 to 30%, and the animal hide is discharged after rotating a drum for 2 to 3 hours.
  4. 4. The preparation method of the composite leather according to claim 1, wherein in the step S2, the degreasing leather is washed 2-3 times by using 2-3 times of water by mass for one time to obtain the primary leather, the neutralization is carried out by adding the primary leather into 2-3 times of water by mass, then adjusting pH to be 6-7 by using 1-2 mol/L sodium bicarbonate aqueous solution, stirring for 1-2 hours at 35-40 ℃ and draining water to obtain the neutralization leather, and the secondary leather is washed 2-3 times by using 2-3 times of water by mass for the secondary leather.
  5. 5. The preparation method of the ultrasonic skin care product according to claim 1, wherein in the step S3, the mass ratio of the secondary water washing to the antibacterial liquid is 1:5-6, and the process conditions of the dipping treatment are 300-400W ultrasonic vibration treatment for 40-50 minutes.
  6. 6. The preparation method of the retanning agent according to claim 1, wherein in the step S4, the specific method of retanning is that the antibacterial treated skin is soaked in water with the weight being 2-3 times of the weight of the antibacterial treated skin at 40-50 ℃ for 40-50 minutes, a retanning agent is added, a rotary drum rotates for 2-3 hours, liquid is discharged, and the mass ratio of the antibacterial treated skin to the retanning agent is 1:0.8-1.
  7. 7. The preparation method of the leather polishing composition according to claim 1, wherein in the step S5, the mass ratio of the retanning leather to the fatliquor is 100:0.3-0.4, and the specific method of the fatliquor treatment is that the retanning leather is soaked for 20-30 minutes by using water with the weight of 60-65 ℃ which is 2-3 times that of the retanning leather, the fatliquor is added, and the drum is rotated for 2-3 hours, so that the liquid is discharged.
  8. 8. A bacteriostatic leather fabric obtained by the preparation method of any one of claims 1 to 7.

Description

Antibacterial leather fabric and preparation method thereof Technical Field The invention belongs to the technical field of fabric preparation, and particularly relates to a bacteriostatic leather fabric and a preparation method thereof. Background The leather fabric is formed by bonding and compounding animal leather with base cloth after degreasing, tanning and other treatments. Animal leather such as cowhide, pigskin, sheepskin is the raw material of making leather surface fabric of people, has good intensity, durable to have animal leather's natural decorative pattern, elegant appearance, waterproof ventilative, the travelling comfort is good, long service life is welcomed by people. Because animal leather resources are limited, the price is higher, a large amount of synthetic leather exists in the market, and the synthetic leather has low cost as a substitute for animal leather, but has poor strength, is waterproof and airtight, and cannot meet the high-quality requirements of people. Compared with synthetic leather, animal leather has outstanding advantages, but has some problems, and the bacteriostasis is a big bottleneck for limiting the application of animal leather. Animal leather contains grease and natural proteins, and sweat, sebum, metabolic products and the like secreted by sweat glands and sebaceous glands of a human body also serve as nutrient sources of microorganisms in the use process, so that the microorganisms are bred and greatly proliferated. Therefore, the natural leather has higher daily maintenance requirements, and once improper treatment occurs, bacterial plaques are formed, so that on one hand, animal leather products are damaged, and on the other hand, the human health is also influenced. At present, people usually realize antibacterial treatment of animal leather by adding antibacterial agents such as fatty alcohol polyoxyethylene ether, N-phenyl-2-naphthylamine, cocamidopropyl betaine and the like, but the antibacterial effect is general, the washing fastness is poor, the antibacterial effect also disappears after loss, and the antibacterial agent has irritation to skin and also can influence the health of human bodies. Patent CN108265136B discloses a leather care agent and a preparation method thereof, and the leather care agent is prepared by mixing methyl benzoate, monoglyceride, white oil, stearic acid, lanolin, simethicone, sulfated castor oil, thyme essential oil, nano silver, deionized water, vitamin A palmitate, triethanolamine borate, coconut oil fatty acid diethanolamide and the like as raw materials. The technology improves the antibacterial effect and ensures the color fastness through the synergistic effect of vitamin A palmitate, triethanolamine borate and coconut oil fatty acid diethanolamide. Wherein, vitamin A palmitate is likely to cause allergic reaction of human body, triethanolamine borate has certain harm, short-term contact can cause eye and skin irritation, burn, chemical burn and other problems, and long-term contact can cause problems of nervous system, respiratory system and the like. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide a bacteriostatic leather fabric and a preparation method thereof. In order to achieve the above purpose, the present invention adopts the following technical scheme: The preparation method of the antibacterial leather fabric comprises the following specific steps: S1, degreasing animal hides by using a degreasing agent solution to obtain degreased leather; s2, primary washing, neutralization and secondary washing to obtain secondary washing skin; S3, immersing the secondary water-washed skin in the antibacterial liquid completely, and carrying out immersion treatment to obtain antibacterial treated skin; s4, retanning the antibacterial treated leather by using a retanning agent to obtain retanning treated leather; And S5, finally, fatliquoring the retanning leather by using a fatliquor, dyeing and fixing colors to obtain the antibacterial leather fabric. Preferably, in step S1, the animal hide is selected from any one of cow leather, pig skin, sheep skin. Preferably, in the step S1, after the animal hide is washed, the animal hide is completely immersed in a degreasing agent solution with the weight of 12-15 times of that of the animal hide, the animal hide is kept stand for 2-3 hours, the pH=2-3 is regulated by using a formic acid aqueous solution with the mass concentration of 20-30%, and the animal hide is discharged after the rotating drum rotates for 2-3 hours. Preferably, in the step S1, the degreasing agent solution is prepared by mixing, by weight, 3-4 parts of 1-butyl-3-methylimidazole chloride, 4-5 parts of 1-butyl-3-methylimidazole hexafluorophosphate, 8-10 parts of decyl glucoside and 100 parts of animal fur waste extract. Further preferably, the animal fur waste extract is prepared by adding animal fur waste into 1-2 mol/L sodium hydroxide solution, stirring and