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CN-122011950-A - Rat bite-preventing UV (ultraviolet) hot-melt cloth-based harness adhesive tape as well as preparation method and application thereof

CN122011950ACN 122011950 ACN122011950 ACN 122011950ACN-122011950-A

Abstract

The invention relates to the technical field of wire harness adhesive tapes, and discloses a rat bite-preventing UV hot-melt cloth-based wire harness adhesive tape, and a preparation method and application thereof. The preparation method comprises the following steps of (1) pretreating a polyester fiber cloth base in a sodium hydroxide solution, neutralizing the polyester fiber cloth base by an acetic acid solution, sequentially carrying out ultrasonic cleaning by water, washing by an optimized solvent, and drying, (2) grafting the cloth base, uniformly mixing capsaicin, a silane coupling agent, an organic bismuth catalyst and an ethanol aqueous solution, adding the cloth base in the step (1) for soaking for a plurality of minutes, then heating for carrying out an addition reaction, (3) compounding a glue layer, namely heating and melting an acrylic acid type UV hot melt adhesive, adding a rat bite prevention composite additive, uniformly mixing, naturally cooling to room temperature, and (4) coating and curing. The addition amount of the anti-rat-biting additive of the adhesive layer is less than 0.4%, the stripping force of the adhesive tape is more than or equal to 3.0N/cm and is maintained at 80 ℃ for more than 24 hours while the anti-rat-biting performance is ensured, the adhesive layer has no cohesive failure, and the anti-rat-biting performance and the adhesive performance are realized.

Inventors

  • SUN JIANQUAN
  • LI XIAOJUN
  • WANG CHAOHUI
  • HU JIA

Assignees

  • 昆山凯密科汽车零部件有限公司

Dates

Publication Date
20260512
Application Date
20260311

Claims (10)

  1. 1. The preparation method of the rat bite-preventing UV hot-melt cloth-based harness adhesive tape is characterized by comprising the following steps of: (1) The alkali liquor modified cloth base is prepared by putting 130g of polyester fiber cloth base into 0.25mol/L sodium hydroxide solution for pretreatment for 20-35 min at 55-75 ℃, neutralizing the solution to pH=7.0 by 0.2-0.3 mol/L acetic acid solution, and then sequentially carrying out ultrasonic cleaning by water, washing by optimized solvent and drying; (2) Uniformly mixing capsaicin, a silane coupling agent, an organobismuth catalyst and an ethanol water solution with the volume concentration of 70%, adding the capsaicin, the silane coupling agent and the organobismuth catalyst into the mixture, soaking the mixture for 20-30 min at 50-60 ℃, heating the mixture under the ultrasonic condition for addition reaction, taking out the mixture after the addition reaction is finished, and drying the mixture for later use; (3) The adhesive layer is compounded, namely, after the acrylic acid type UV hot melt adhesive is heated and melted at 140-160 ℃, 0.1-0.4% of the anti-rat bite composite additive is added, the mixture is continuously stirred for 40-60 min, and the mixture is naturally cooled to room temperature after being uniformly stirred; (4) Coating and curing, namely coating the composite adhesive in the step (3) on the surface of the step (2) through slit coating at 140-155 ℃, and winding after curing by irradiation of a UV-C lamp source.
  2. 2. The preparation method of the rat-proof UV hot-melt fabric base harness adhesive tape according to claim 1 is characterized in that the ultrasonic cleaning frequency of water in the step (1) is 3-5 times, the time is 5-10 min, the power is 200-400W, the drying process parameter is 38-45 ℃ and the time is 10-15 h, and the optimized solvent is isopropanol or ethyl acetate.
  3. 3. The preparation method of the rat-proof UV hot-melt fabric-based harness adhesive tape, which is disclosed in claim 1, is characterized in that the mass percentages of capsaicin, a silane coupling agent, an organic bismuth catalyst and an ethanol aqueous solution in the step (2) are respectively 2.0-4.0%, 1.0-2.5%, 0.3-0.5% and 80-95%.
  4. 4. The method for preparing the rat-proof UV hot-melt fabric-based harness adhesive tape according to claim 1, wherein the silane coupling agent in the step (2) is gamma-methacryloxypropyl trimethoxysilane.
  5. 5. The preparation method of the rat-proof UV hot-melt fabric base wire harness adhesive tape according to claim 1, wherein the organic bismuth catalyst in the step (2) is BiCat8108, and the purity is more than or equal to 98%.
  6. 6. The preparation method of the rat-proof UV hot-melt fabric base wire harness adhesive tape according to claim 1, wherein the reaction temperature of the addition reaction in the step (2) is 90-120 ℃ and the time is 25-35 min.
  7. 7. The preparation method of the rat-proof UV hot-melt fabric-based harness adhesive tape according to claim 1, wherein the rat-proof composite additive in the step (3) is compounded by capsaicin and capsaicin, and the mass ratio of the capsaicin to the capsaicin is 1:2.
  8. 8. The preparation method of the rat-proof UV hot-melt fabric base wire harness adhesive tape according to claim 1, wherein the irradiation intensity of the UV-C lamp source in the step (4) is 60-120 mJ/cm < 2 >, the coating line speed is 15-25 m/min, and the adhesive layer thickness is 90-95 mu m.
  9. 9. The rat bite-resistant UV hot melt fabric-based harness tape prepared by the method of any one of claims 1-8.
  10. 10. The use of the tape of claim 9 for protection against rat bites in automotive wiring harnesses, transportation cables, home scene cables and pipes.

Description

Rat bite-preventing UV (ultraviolet) hot-melt cloth-based harness adhesive tape as well as preparation method and application thereof Technical Field The invention relates to the technical field of wire harness adhesive tapes, in particular to a rat bite-preventing UV hot-melt cloth-based wire harness adhesive tape, and a preparation method and application thereof. Background It is known that the biting of objects such as pipelines, lines and the like by mice is particularly easy to cause leakage, short circuit and other series of safety accidents, and great economic loss can be caused. Therefore, research and development of the rat bite preventing material are widely applied in various fields. According to the prior art, a proper amount of capsaicin and a bitter agent are added into PVC to effectively repel （Laongdaw Techawinyutham and Rapeephun Dangtungee, Anti-Rodent Polymer Composites Key Engineering Materials, Key Engineering Materials, 818 (2019) 1-6）., but the improvement of the material achieves the effect that a traditional route of adding capsaicin into a single adhesive layer is mostly used in the rat-proof technology, and the defects are that (1) the inherent contradiction exists between the capsaicin addition amount and the adhesive strength of the adhesive layer, the internal compatibility of the adhesive layer is easily damaged due to excessive addition, so that the adhesive property is severely reduced, and the dual requirements of rat-proof protection and structure fixation are difficult to be met, and (2) single ethanol is mostly used as a washing solvent in the cloth base pretreatment stage, and the solvent is easy to cause swelling damage to polyester fiber cloth, so that the tensile strength of the polyester fiber cloth is reduced by 15-20%, and the structural stability of a product is seriously weakened. According to the reported patent discovery, the technical scheme of the method does not touch the double-stage modification design of the cloth base and the adhesive layer, and the optimization research is not carried out on 130g of polyester cloth base washing solvent, so that the technical problems cannot be synchronously solved. Therefore, developing a rat-proof base tape with long-acting repellency, excellent bonding strength and reliable structural stability has become a technical bottleneck in the field which is urgently needed to be overcome. Disclosure of Invention In order to solve the technical problems, the invention aims to provide the anti-rat-bite UV hot-melt cloth-based harness adhesive tape, and the preparation method and the application thereof, and the design of cloth-based alkali treatment modification, cloth-based grafting pretreatment and adhesive layer compounding addition is adopted to improve the hydroxyl content on the surface of the polyester fiber cloth base so as to enhance grafting activity, realize the comprehensive uniform distribution and long-term release of the anti-rat-bite composite additive in the adhesive tape, synchronously improve the repellent stability, durability and adhesive property, and meet the requirement of multi-scene protection. The preparation method of the UV hot-melt cloth-based harness adhesive tape for preventing the rat bite is characterized by comprising the following steps of: (1) The alkali liquor modified cloth base is prepared by putting 130g of polyester fiber cloth base into 0.25mol/L sodium hydroxide solution for pretreatment for 20-35 min at 55-75 ℃, neutralizing the solution to pH=7.0 by 0.2-0.3 mol/L acetic acid solution, and then sequentially carrying out ultrasonic cleaning by water, washing by optimized solvent and drying; (2) Uniformly mixing capsaicin, a silane coupling agent, an organobismuth catalyst and an ethanol water solution with the volume concentration of 70%, adding the capsaicin, the silane coupling agent and the organobismuth catalyst into the mixture, soaking the mixture for 20-30 min at 50-60 ℃, heating the mixture under the ultrasonic condition for addition reaction, taking out the mixture after the addition reaction is finished, and drying the mixture for later use; (3) The adhesive layer is compounded, namely, after the acrylic acid type UV hot melt adhesive is heated and melted at 140-160 ℃, 0.1-0.4% of the anti-rat bite composite additive is added, the mixture is continuously stirred for 40-60 min, and the mixture is cooled to room temperature after being uniformly stirred; (4) Coating and curing, namely coating the composite adhesive in the step (3) on the surface of the step (2) through slit coating at 140-155 ℃, and winding after curing by irradiation of a UV-C lamp source. Preferably, the ultrasonic cleaning times of water in the step (1) are 3-5 times, the time is 5-10 min, the power is 200-400W, the drying process parameters are 80-100 ℃ and the time is 50-75 min, and the optimized solvent is isopropanol or ethyl acetate. Preferably, the mass percentages of the capsaicin, the silane coupli