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CN-122013351-A - Tear-resistant polyester woven belt and preparation method thereof

CN122013351ACN 122013351 ACN122013351 ACN 122013351ACN-122013351-A

Abstract

The invention discloses a tearing-resistant terylene woven belt and a preparation method thereof, and relates to the technical field of terylene materials. The reinforcing agent is added in the preparation formula of the terylene braiding belt, so that the strength, toughness and tear resistance of the terylene braiding belt are obviously enhanced on the premise of ensuring the processing performance of the material, the performance short plate of a single material is overcome, the comprehensive performance of the terylene material is improved, active groups in the reinforcing agent can be further crosslinked with the PET master batch through transesterification in the process of melt mixing of the subsequent reinforcing agent and the PET master batch, the strength and toughness of the terylene braiding belt are improved, the expansion of microcracks is effectively prevented, and the tear resistance is improved.

Inventors

  • LU FENG
  • LU QIANYING
  • LU YUETING

Assignees

  • 江苏高峰特种纺织科技有限公司

Dates

Publication Date
20260512
Application Date
20260318

Claims (10)

  1. 1. A preparation method of a tearing-resistant polyester woven belt is characterized by comprising the following steps: s1, melting and mixing PET master batch, a reinforcing agent, a toughening agent, a flame retardant and an antioxidant, and sequentially spinning and braiding to obtain a braided belt primary product; S2, immersing the primary woven belt product into impregnating solution for treatment to obtain the tear-resistant polyester woven belt.
  2. 2. The method for producing a tear-resistant polyester woven tape according to claim 1, wherein said reinforcing agent is produced by the following process: Adding 4,4' -oxydiphthalic anhydride and 1, 4-cyclohexanediamine into N, N-dimethylformamide, uniformly mixing, adding triethylamine, reacting at low temperature, heating, keeping warm, continuing to react, filtering after the reaction is finished, and drying to obtain an imide monomer; And step two, adding 2, 6-naphthalene dicarboxylic acid, terephthalic acid, 4-methyl-1, 2-cyclohexanedimethanol, imide monomers and a catalyst into a reaction kettle, stirring uniformly in a nitrogen atmosphere, heating for reaction, and cooling to obtain the reinforcing agent.
  3. 3. The method for preparing the tear-resistant polyester woven belt according to claim 1, wherein the impregnating solution is prepared by adding phenolic resin and epoxy fatty acid butyl ester into n-butyl alcohol, and stirring uniformly to obtain the impregnating solution.
  4. 4. The method for preparing the tear-resistant polyester woven belt, which is characterized by comprising the specific process of immersing a woven belt primary product in the impregnating solution, setting the impregnating temperature to be 70-80 ℃, immersing for 25-30 min, taking out, draining, washing with n-butyl alcohol, removing residual impregnating solution, and drying for 2-4 h at the temperature of 118-120 ℃.
  5. 5. The method for preparing the tear-resistant polyester woven belt according to claim 1, wherein in the step S1, the woven belt primary product comprises, by mass, 50-60 parts of PET master batch, 10-20 parts of reinforcing agent, 5-10 parts of toughening agent, 1-5 parts of flame retardant and 0.05-0.1 part of antioxidant.
  6. 6. The method for producing a tear-resistant polyester woven tape according to claim 2, wherein in the first step, the mass ratio of 4,4' -oxydiphthalic anhydride, 1, 4-cyclohexanediamine, triethylamine, and N, N-dimethylformamide is (5-10): (2-3): (0.1-0.5): (50-55).
  7. 7. The method for preparing the tear-resistant polyester woven belt according to claim 2, wherein in the second step, the reinforcing agent comprises the following components, by mass, 20-30 parts of 2, 6-naphthalene dicarboxylic acid, 40-60 parts of terephthalic acid, 30-40 parts of 4-methyl-1, 2-cyclohexanedimethanol, 5-10 parts of imide monomers and 0.5-1 part of catalyst.
  8. 8. The method for preparing the tear-resistant polyester woven belt according to claim 1, wherein the bath solution ratio of the woven belt primary product to the impregnating solution is 1:30-40, and the coating amount of the impregnating solution is 10-20%.
  9. 9. The method for preparing the tear-resistant polyester woven belt according to claim 5, wherein the toughening agent is polyethylene grafted maleic anhydride, the flame retardant is cyclic phosphate flame retardant, and the antioxidant is phenolic antioxidant.
  10. 10. A tear-resistant polyester woven tape characterized by being produced by the production process according to any one of claims 1 to 9.

Description

Tear-resistant polyester woven belt and preparation method thereof Technical Field The invention relates to the technical field of polyester materials, in particular to a tear-resistant polyester woven belt and a preparation method thereof. Background The polyester braiding belt is a narrow-width or tubular fabric made of polyester fiber, and is widely applied to the fields of clothing, shoe materials, bags, industrial binding, transportation and the like due to the characteristics of high strength, wear resistance, corrosion resistance and the like. With the gradual improvement of the performance requirements of materials, the traditional terylene woven belt is easy to have problems of local tearing, pilling, spinning, permanent deformation and the like in complex use environments such as high-frequency friction, lateral pulling, scraping of sharp objects and the like, so that the strength is reduced and the service life is shortened. The terylene braiding belt in the prior art adopts the technologies of mixed braiding, a multi-layer structure and the like to compound various fiber materials, but has the defects of insufficient toughness, high rigidity, insufficient ductility and weak interface binding force of different materials, and limits the application of the terylene braiding belt. Therefore, the invention provides a tearing-resistant terylene woven belt and a preparation method thereof, which aim to solve the technical problems. Disclosure of Invention The invention aims to provide a tearing-resistant terylene woven belt and a preparation method thereof, which are used for solving the problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: A preparation method of a tearing-resistant polyester woven belt comprises the following steps: s1, melting and mixing PET master batch, a reinforcing agent, a toughening agent, a flame retardant and an antioxidant, and sequentially spinning and braiding to obtain a braided belt primary product; S2, immersing the primary woven belt product into impregnating solution for treatment to obtain the tear-resistant polyester woven belt. In step S1, the primary braid product comprises, by mass, 50-60 parts of PET master batch, 10-20 parts of reinforcing agent, 5-10 parts of toughening agent, 1-5 parts of flame retardant and 0.05-0.1 part of antioxidant. Further, in the step S1, the specific process of melt mixing is that PET master batch and reinforcing agent are mixed, heated to 190-200 ℃, stirred uniformly, then toughening agent, flame retardant and antioxidant are added, heated to 260-280 ℃ and mixed uniformly. Further, the spinning process conditions are that the spinning speed is 800-900 m/min, and the cooling air flow speed is 5-6 m/s. Further, the toughening agent is polyethylene grafted maleic anhydride (PE-g-MAH). Further, the flame retardant is a cyclic phosphate flame retardant. Further, the antioxidant is a phenolic antioxidant. Further, the reinforcing agent is prepared by the following process: Adding 4,4' -oxydiphthalic anhydride and 1, 4-cyclohexanediamine into N, N-dimethylformamide, uniformly mixing, adding triethylamine, reacting at low temperature, heating, keeping warm, continuing to react, filtering after the reaction is finished, and drying to obtain an imide monomer; And step two, adding 2, 6-naphthalene dicarboxylic acid, terephthalic acid, 4-methyl-1, 2-cyclohexanedimethanol, imide monomers and a catalyst into a reaction kettle, stirring uniformly in a nitrogen atmosphere, heating for reaction, and cooling to obtain the reinforcing agent. In the first step, the low-temperature reaction is carried out for 3-5 hours at the temperature of 0-10 ℃, and the temperature rising is carried out for 130-150 ℃ and the temperature is kept for 3-6 hours. In the second step, the heating reaction is carried out for 2-4 hours at the temperature of 110-180 ℃. According to the technical scheme, the reinforcing agent is added in the preparation formula of the terylene braiding belt, on the premise of ensuring the processing performance of the material, the strength, toughness and tear resistance of the terylene braiding belt are obviously enhanced, the performance short plate of a single material is overcome, the comprehensive performance of the terylene material is improved, in the preparation process of the reinforcing agent, excessive 4,4' -oxydiphthalic anhydride is utilized to react with diamine to generate an imide monomer with carboxyl at the end part, the imide monomer also contains a flexible ether bond, and the imide monomer participates in the polymerization reaction process of 2, 6-naphthalene dicarboxylic acid, terephthalic acid, 4-methyl-1, 2-cyclohexanedimethanol through the carboxyl at the end part to obtain the polyester oligomer with naphthalene ring, methyl, cyclohexane and other structures as the reinforcing agent. In the process of melt mixing the subsequent reinforcing