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CN-122013357-A - Antibacterial polyurethane fiber for socks and preparation method thereof

CN122013357ACN 122013357 ACN122013357 ACN 122013357ACN-122013357-A

Abstract

The invention relates to the technical field of composite materials, in particular to an antibacterial polyurethane fiber for socks and a preparation method thereof, wherein the antibacterial polyurethane fiber comprises, by weight, 100 parts of polyurethane resin, 350-450 parts of an organic solvent, 15-30 parts of an antibacterial microcapsule, 3-8 parts of an emulsifier, 1-5 parts of a viscosity regulator and 2-6 parts of an antibacterial synergist, and the antibacterial microcapsule is prepared by the following steps of S1, dissolving berberine and ellagic acid in a mass ratio of 1 (0.5-2) in 50% ethanol solution, and stirring at a temperature of 50-65 ℃ for 2-4 hours to obtain a core material. According to the invention, the antibacterial microcapsule can release antibacterial components in a fiber system by adding the antibacterial microcapsule, and the use of the antibacterial components can obviously prolong the durability of the antibacterial effect, so that the defects of easy migration and easy elution of the antibacterial components in the traditional polyurethane fiber are effectively overcome.

Inventors

  • WANG YIOU
  • HAN CHUCHU
  • HUANG XIA
  • LI XIN
  • WANG SHENGHONG

Assignees

  • 辽源海百娜袜业有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (9)

  1. 1. The antibacterial polyurethane fiber for socks is characterized by comprising the following raw materials, by weight, 100 parts of polyurethane resin, 350-450 parts of an organic solvent, 15-30 parts of an antibacterial microcapsule, 3-8 parts of an emulsifying agent, 1-5 parts of a viscosity regulator and 2-6 parts of an antibacterial synergist.
  2. 2. The antibacterial polyurethane fiber for socks according to claim 1, wherein the antibacterial microcapsule is prepared by the following method: s1, dissolving berberine and ellagic acid in a mass ratio of 1 (0.5-2) in 50% ethanol solution, and stirring at 50-65deg.C for 2-4 hr to obtain core material, wherein the mass of berberine is 20% of that of ethanol solution; S2, dissolving chitosan and gum arabic according to a mass ratio of 1 (1-2) in acetic acid solution with concentration of 1% to prepare a wall material; S3, dispersing the core material obtained in the step S1 in a wall material, regulating the pH to 4.5-5.5 by using dilute alkali liquor, and stirring and reacting for 1-2 hours to obtain emulsion; s4, cooling the emulsion to room temperature, performing centrifugal separation treatment, obtaining a precipitate through centrifugal separation, alternately washing the precipitate for 3 times by using deionized water and absolute ethyl alcohol at 4 ℃, placing the obtained product in a freeze-drying plate, pre-freezing for 5 hours at-45 ℃, transferring the product to a freeze dryer, and performing freeze-drying for 36 hours at-55 ℃ and a vacuum degree of 15Pa to obtain the antibacterial microcapsule.
  3. 3. The antibacterial polyurethane fiber for socks according to claim 1, wherein the antibacterial synergist is prepared by the following method: Dissolving poplar polyphenol extract in deionized water, stirring and reacting for 30min at 55-65 ℃ to obtain a first mixed solution, wherein the mass of Yang Shuduo phenolic extract is 5% of the mass of deionized water; Step 2, adding zirconium oxychloride powder into the first mixed solution, and uniformly mixing, wherein the mass of the zirconium oxychloride is 25% -40% of that of the poplar polyphenol extract; and 3, mixing the first mixed solution with zirconium oxychloride powder, keeping the temperature at 50 ℃, continuing to react for 2.5-3.5 hours, cooling to room temperature after finishing the heat preservation reaction, and grinding the obtained product after centrifugal separation, ethanol washing and drying treatment to obtain the antibacterial synergist.
  4. 4. The antibacterial polyurethane fiber for socks according to claim 3, wherein the poplar polyphenol extract is prepared by mixing poplar bark powder with an aqueous solution of ethanol with a mass concentration of 60% at a solid-to-liquid ratio of 1 (9-11) to obtain a second mixed solution, reflux-extracting the second mixed solution at 80-90 ℃ for 2 times, refluxing each time for 1.5-2.5 hours, combining the extracts, filtering the extracts to obtain a filtrate, concentrating the filtrate under reduced pressure to remove ethanol, and freeze-drying the obtained product to obtain Yang Shuduo phenol extract.
  5. 5. The antibacterial polyurethane fiber for socks according to claim 2, wherein the dilute alkali solution of S3 is sodium bicarbonate solution with concentration of 1-5%.
  6. 6. The antibacterial polyurethane fiber for socks according to claim 1, wherein the organic solvent is selected from the group consisting of N, N-dimethylformamide.
  7. 7. The antibacterial polyurethane fiber for socks according to claim 1, wherein the emulsifier is gum arabic.
  8. 8. The antimicrobial polyurethane fiber for socks according to claim 1, wherein the viscosity modifier is fumed silica.
  9. 9. The method for preparing an antibacterial polyurethane fiber for socks according to any one of claims 1 to 8, comprising the steps of: Dissolving polyurethane resin in an organic solvent to prepare a stock solution, adding an antibacterial microcapsule, an emulsifying agent, a viscosity regulator and an antibacterial synergistic agent into the stock solution, and stirring and uniformly mixing to obtain a mixed solution; Step two, after the mixed solution is defoamed and filtered, adopting a wet spinning technology, injecting the mixed solution into a coagulating bath for molding to obtain nascent fibers; Washing the nascent fiber with 50-70 ℃ hot water, performing hot drawing in a heat medium at 70-95 ℃ after the washing treatment, performing oiling treatment, drying and heat setting the obtained product at 100-130 ℃, and winding the obtained product to obtain the antibacterial polyurethane fiber for socks.

Description

Antibacterial polyurethane fiber for socks and preparation method thereof Technical Field The invention relates to the technical field of composite materials, in particular to an antibacterial polyurethane fiber for socks and a preparation method thereof. Background Polyurethane fibers are one of the important functional materials in the manufacture of socks because of their excellent elasticity, abrasion resistance and comfort. In the prior art, common polyurethane fibers which are not subjected to antibacterial treatment are easy to grow microorganisms such as bacteria and fungi in a humid and warm environment, so that the problems of degradation, color change, peculiar smell and the like of the fibers are caused, common antibacterial treatment modes in the market at present comprise surface coating, blending addition of inorganic antibacterial agents or organic antibacterial agents, and the problems of poor antibacterial durability, easy elution and the like exist. Disclosure of Invention The invention aims to provide an antibacterial polyurethane fiber for socks and a preparation method thereof, and the antibacterial polyurethane fiber has high-efficiency, lasting and stable antibacterial performance, can effectively inhibit the breeding of common bacteria and fungi in socks, and solves the problems of peculiar smell, material degradation, potential health risks and the like caused by microorganism breeding. In order to achieve the above purpose, the present invention provides the following technical solutions: In a first aspect, the invention provides an antibacterial polyurethane fiber for socks, which is characterized by comprising the following raw materials, by weight, 100 parts of polyurethane resin, 350-450 parts of organic solvent, 15-30 parts of antibacterial microcapsules, 3-8 parts of emulsifying agent, 1-5 parts of viscosity regulator and 2-6 parts of antibacterial synergist The antibacterial microcapsule is prepared by the following method: s1, dissolving berberine and ellagic acid in a mass ratio of 1 (0.5-2) in 50% ethanol solution, and stirring at 50-65deg.C for 2-4 hr to obtain core material, wherein the mass of berberine is 20% of that of ethanol solution; S2, dissolving chitosan and gum arabic according to a mass ratio of 1 (1-2) in acetic acid solution with concentration of 1% to prepare a wall material; S3, dispersing the core material obtained in the step S1 in a wall material, regulating the pH to 4.5-5.5 by using dilute alkali liquor, and stirring and reacting for 1-2 hours to obtain emulsion; s4, cooling the emulsion to room temperature, performing centrifugal separation treatment, obtaining a precipitate through centrifugal separation, alternately washing the precipitate for 3 times by using deionized water and absolute ethyl alcohol at 4 ℃, placing the obtained product in a freeze-drying plate, pre-freezing for 5 hours at-45 ℃, transferring the product to a freeze dryer, and performing freeze-drying for 36 hours at-55 ℃ and a vacuum degree of 15Pa to obtain the antibacterial microcapsule. Further, the antibacterial synergist is prepared by the following method: Dissolving poplar polyphenol extract in deionized water, stirring and reacting for 30min at 55-65 ℃ to obtain a first mixed solution, wherein the mass of Yang Shuduo phenolic extract is 5% of the mass of deionized water; Step 2, adding zirconium oxychloride powder into the first mixed solution, and uniformly mixing, wherein the mass of the zirconium oxychloride is 25% -40% of that of the poplar polyphenol extract; and 3, mixing the first mixed solution with zirconium oxychloride powder, keeping the temperature at 50 ℃, continuing to react for 2.5-3.5 hours, cooling to room temperature after finishing the heat preservation reaction, and grinding the obtained product after centrifugal separation, ethanol washing and drying treatment to obtain the antibacterial synergist. Further, the poplar polyphenol extract is prepared by mixing poplar bark powder with an ethanol aqueous solution with the mass concentration of 60% according to the solid-to-liquid ratio of 1 (9-11) to obtain a second mixed solution, carrying out reflux extraction on the second mixed solution at 80-90 ℃ for 2 times, carrying out reflux for 1.5-2.5h each time, combining the extracting solutions, carrying out filtration treatment on the extracting solutions to obtain filtrate, carrying out reduced pressure concentration treatment on the filtrate, removing ethanol, and carrying out freeze drying treatment on the obtained product to obtain Yang Shuduo phenol extract. Further, the dilute alkali solution is sodium bicarbonate solution with the concentration of 1-5%. Further, the organic solvent is N, N-dimethylformamide. Further, the emulsifier is gum arabic. Further, the viscosity modifier is fumed silica. In a second aspect, the invention also provides a preparation method of the antibacterial polyurethane fiber for socks, which comprises the following steps: