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CN-121992521-A - Strong-effect antibacterial antistatic cloth and preparation method thereof

CN121992521ACN 121992521 ACN121992521 ACN 121992521ACN-121992521-A

Abstract

The invention relates to the technical field of antistatic cloth, and discloses a strong-effect antibacterial antistatic cloth and a preparation method thereof. The strong antibacterial antistatic cloth comprises, by weight, 80-100 parts of polyacrylonitrile resin, 1-3 parts of a modified antibacterial agent, 2-5 parts of a modified antistatic agent, 0.5-2 parts of a synergistic agent, 0.5-1.5 parts of a softening agent, 0.5-1 part of nano silicon dioxide and 25-35 parts of a solvent. The modified antibacterial agent can realize durable antibacterial effect, effectively inhibit breeding of various pathogenic bacteria such as escherichia coli, staphylococcus aureus and the like, ensure sanitation and safety of use environment, and can form a durable conductive path on the surface of acrylic fiber by introducing the conductive polymer to quickly dissipate static accumulation and reduce adverse effects caused by static.

Inventors

  • LI ZHIFEI
  • XIONG YANLIANG
  • LI MINGXIANG
  • LI ZHIHUI
  • CAO FULING

Assignees

  • 吴江市标盾化纤织造有限公司

Dates

Publication Date
20260508
Application Date
20260127

Claims (10)

  1. 1. The strong antibacterial antistatic cloth is characterized by comprising the following raw materials, by weight, 80-100 parts of polyacrylonitrile resin, 1-3 parts of modified antibacterial agent, 2-5 parts of modified antistatic agent, 0.5-2 parts of synergist, 0.5-1.5 parts of softener, 0.5-1 part of nano silicon dioxide and 25-35 parts of solvent; the modified antibacterial agent is prepared by the following steps: A1, mixing azodiisobutyronitrile and chloroform, heating to 65 ℃, then adding 4-allylcatechol, 2- (perfluorooctyl) ethyl methacrylate and 2-aminoethyl methacrylate hydrochloride, stirring for 14h under the protection of nitrogen, cooling to room temperature, adding the solution into petroleum ether, filtering, precipitating, and drying at room temperature to obtain an intermediate product 1; Step A2, mixing the intermediate product 1 obtained in the step A1, 30wt% of trimethylamine aqueous solution, 1H-pyrazole-1-formamidine hydrochloride and deionized water, then filling nitrogen into a reaction system for three times, reacting at room temperature for 24 hours, and then dialyzing, steaming in a rotary manner, and freeze-drying to obtain an intermediate product 2; And A3, mixing zinc oxide with deionized water, performing ultrasonic treatment for 30min, adding the intermediate product 2, continuously stirring for 30min, stirring at room temperature for reaction for 3h, and centrifuging, washing and drying after the reaction is finished to obtain the modified antibacterial agent.
  2. 2. The strong antibacterial and antistatic cloth according to claim 1, wherein the amount ratio of azodiisobutyronitrile, chloroform, 4-allylcatechol, 2- (perfluorooctyl) ethyl methacrylate, 2-aminoethyl methacrylate hydrochloride and petroleum ether in the step A1 is 0.42-1.26g:60-180mL:0.1-0.3mol:0.1-0.3 mol:200-500mL.
  3. 3. The strong antibacterial and antistatic cloth according to claim 1, wherein the dosage ratio of the aqueous trimethylamine solution in the step A2, the 2-aminoethyl methacrylate hydrochloride in the step A1, the 1H-pyrazole-1-carboxamidine hydrochloride and the deionized water is 33-66 mL/0.05-0.1 mol/0.075-0.15 mol/60-100 mL.
  4. 4. The strong antibacterial antistatic cloth according to claim 1, wherein the dosage ratio of zinc oxide, deionized water and 4-allylcatechol in step A3 is 0.3g:90-100ml:0.5-2mmol.
  5. 5. The strong antibacterial antistatic cloth according to claim 1, wherein the modified antistatic agent is prepared by the steps of: step B1, mixing 4-dimethylaminobenzoic acid, N-diisopropylethylamine, TBTU and DMF, stirring for 1h at room temperature, adding 3-aminomethylthiophene, continuing to react for 24h at room temperature, washing for 5 times by using saturated saline after the reaction is finished, drying and purifying to obtain a quaternary ammonium thiophene monomer; step B2, mixing the quaternary ammonium thiophene monomer with acetonitrile, dropwise adding 2- (2-bromoethoxy) ethanol at 45 ℃, reacting for 12 hours after the dropwise adding is finished, cooling to room temperature, adding diethyl ether, precipitating, washing, decompressing and filtering, and vacuum drying to obtain the quaternary ammonium thiophene monomer; and B3, mixing chloroform and anhydrous ferric chloride, stirring for 30min under the protection of nitrogen, then dropwise adding a quaternary ammonium thiophene monomer solution, stirring and reacting for 24h at 0 ℃, adding methanol for quenching reaction, filtering at room temperature, dissolving a filter cake, adding 25wt% ammonia water, stirring, separating, repeating for 5 times, and drying by a Soxhlet extraction method to obtain the modified antistatic agent.
  6. 6. The strong antibacterial and antistatic cloth according to claim 6, wherein the dosage ratio of 4-dimethylaminobenzoic acid, N-diisopropylethylamine, TBTU, DMF, 3-aminomethylthiophene and saturated saline in the step B1 is 0.1-0.3mol:0.2-0.6mol:0.12-0.36mol:500-700mL:0.3-0.9mol:500-700mL.
  7. 7. The strong antibacterial and antistatic cloth according to claim 6, wherein the dosage ratio of the quaternary ammonium thiophene monomer, acetonitrile, 2- (2-bromoethoxy) ethanol and diethyl ether in the step B2 is 0.055-0.22mol:40-100mL:0.05-0.2mol:100-150mL.
  8. 8. The strong antibacterial antistatic cloth according to claim 6, wherein in the step B3, the dosage ratio of chloroform, anhydrous ferric chloride, quaternary ammonium salt thiophene monomer solution, methanol and ammonia water is 100-150mL:0.041-0.121mol:30-60mL:50-80mL:100-300mL, and the quaternary ammonium salt thiophene monomer solution is formed by mixing quaternary ammonium salt thiophene monomer and chloroform in a dosage ratio of 0.01-0.03mol:30-60 mL.
  9. 9. The strong antibacterial antistatic cloth according to claim 1, wherein the synergistic agent is one of glycerin and sorbitol, the softening agent is amino modified silicone oil, and the solvent is one of dimethylformamide and dimethyl sulfoxide.
  10. 10. A method for preparing the strong antibacterial antistatic cloth according to any one of claims 1 to 9, wherein the strong antibacterial antistatic cloth is prepared by the following steps: step S1, weighing raw materials according to parts by weight, and drying polyacrylonitrile resin for standby to obtain polyacrylonitrile dry powder; S2, dissolving a modified antibacterial agent, a modified antistatic agent, a synergistic agent, a softening agent and nano silicon dioxide in a solvent, adding polyacrylonitrile dry powder, heating and stirring for 1h at 60-90 ℃ to prepare a spinning solution; And S3, pouring the spinning solution into special spinning equipment to start melt-blowing spinning to a net curtain to prepare non-woven fabrics, wherein the hot air temperature during spinning is 150-170 ℃, placing the prepared acrylic non-woven fabrics into a 70-90 ℃ water bath to wash for 30-45min, and after the washing is finished, placing the non-woven fabrics into a 90 ℃ oven to dry to constant weight, thus finally obtaining the high-efficiency antibacterial antistatic fabric.

Description

Strong-effect antibacterial antistatic cloth and preparation method thereof Technical Field The invention relates to the technical field of antistatic cloth, in particular to strong-effect antibacterial antistatic cloth and a preparation method thereof. Background In recent years, with rapid development of fields such as electronic information, precision manufacturing, medical health, and the like, double risks caused by electrostatic hazard and microbial contamination are attracting attention, and the market demand for antistatic cloth as a key material having electrostatic protection function is continuously rising. The research and development core of the traditional antistatic cloth focuses on the static eliminating performance, and the material is endowed with the conductive performance through fiber modification, surface coating and other modes to realize static protection, but a plurality of performance short plates are gradually exposed in practical application, and particularly, obvious research difficulties exist in the aspect of collaborative optimization of antibacterial and antistatic performance. The traditional antistatic cloth generally lacks a targeted antibacterial design, the surface of the fiber is easy to become a breeding carrier for microorganisms such as bacteria and fungi, and under the use environments such as humidity, sealing and the like, the microorganisms are greatly bred, so that the cloth is moldy and deteriorated, the service life is shortened, the health hidden trouble or pollution problem is possibly caused, and the use requirements of the sanitary sensitive fields such as medical treatment, food processing and the like are difficult to meet. In addition, the compatibility of the existing antibacterial modification technology and the antistatic performance is difficult, and part of antibacterial agents may damage the conductive network of the conductive fibers, so that the antistatic performance is attenuated or disabled. In addition, the antistatic performance of the traditional antistatic cloth has stability defect, and after repeated washing and friction, the surface conductive layer is easy to wear and drop, so that the electrostatic protection capability is drastically reduced. Patent application number 202010281999.7 discloses an antibacterial non-woven fabric, which is obtained by immersing modified acrylic fibers in silver solution, but the cost of using silver antibacterial liquid is high, toxicity to human body is possibly generated, and infants need to use carefully. Patent application number 201010140562.8 discloses antistatic acrylic fibers and a preparation method of the antistatic acrylic fibers, wherein carbon nanotubes and carbon black are used for improving the antistatic performance of the acrylic fibers, but the dispersibility is poor, agglomeration is easy in processing, and dark fibers can only be prepared by using the carbon black, so that the market demand of light fibers is difficult to meet. Disclosure of Invention In order to solve the technical problems, the invention provides a strong antibacterial antistatic cloth and a preparation method thereof. The aim of the invention can be achieved by the following technical scheme: the strong antibacterial antistatic cloth comprises the following raw materials, by weight, 80-100 parts of polyacrylonitrile resin, 1-3 parts of a modified antibacterial agent, 2-5 parts of a modified antistatic agent, 0.5-2 parts of a synergistic agent, 0.5-1.5 parts of a softening agent, 0.5-1 part of nano silicon dioxide and 25-35 parts of a solvent; The synergist is one of glycerol and sorbitol; The softener is amino modified silicone oil; the solvent is one of dimethylformamide and dimethyl sulfoxide; the modified antibacterial agent is prepared by the following steps: A1, mixing azodiisobutyronitrile and chloroform, heating to 65 ℃, then adding 4-allylcatechol, 2- (perfluorooctyl) ethyl methacrylate and 2-aminoethyl methacrylate hydrochloride, stirring for 14h under the protection of nitrogen, cooling to room temperature, adding the solution into petroleum ether, filtering, precipitating, and drying at room temperature to obtain an intermediate product 1; Further, the dosage ratio of azodiisobutyronitrile, chloroform, 4-allylcatechol, 2- (perfluorooctyl) ethyl methacrylate, 2-aminoethyl methacrylate hydrochloride and petroleum ether is 0.42-1.26g:60-180mL:0.1-0.3mol:0.1-0.3 mol:200-500mL; In the step A1, 4-allyl catechol, 2- (perfluorooctyl) ethyl methacrylate and methacrylic acid 2-aminoethyl ester hydrochloride are subjected to polymerization reaction, an introduced amino group provides reaction conditions for subsequent nucleophilic substitution reaction, an introduced catechol provides conditions for subsequent zinc oxide adsorption, an introduced fluorocarbon chain can shield hydrophilic groups, the hydrophobicity of the system is improved, bacteria are difficult to attach and grow on the surface due to the surfa