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A method for improving the abrasion resistance of polyester industrial yarn

An industrial yarn and wear resistance technology, applied in the field of polyester industrial yarn, can solve the problems of low surface energy, difficulty in mass production, complicated polymerization process, etc., and achieve the goal of reducing surface friction coefficient, reducing surface particles, and improving surface properties Effect

Active Publication Date: 2022-05-06
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of practical application, polyester industrial yarns used in automobile safety belts have strict requirements on wear resistance. In industrial production, polyester industrial yarns are usually post-treated with sizing solutions containing polyacrylamide, but due to the There are few active binding groups on the surface of ester industrial yarns, so the binding force between the sizing solution and polyester industrial yarns is poor, and the wear resistance of the obtained car seat belts cannot be significantly improved.
Patent CN201310447035.5 discloses a fluoropolyester high-strength wear-resistant industrial yarn and its preparation method. The hydrogen on the benzene ring of the polyester itself is replaced by fluorine mainly through copolymerization modification. Because fluoropolymers usually have low surface Energy, low friction coefficient and non-adhesion, so as to achieve the purpose of improving the wear resistance of industrial yarns, but the polymerization process is complicated, the control conditions are cumbersome, and it is not suitable for industrial mass production
Patent CN201811614070.0 also discloses a way to improve the wear resistance of polyester industrial yarn by adding other functional powders in the polymerization, but it also faces the problem of complex polymerization process and difficult mass production

Method used

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  • A method for improving the abrasion resistance of polyester industrial yarn
  • A method for improving the abrasion resistance of polyester industrial yarn
  • A method for improving the abrasion resistance of polyester industrial yarn

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation method of the polytetrafluoroethylene nano-particle containing ester group on the surface is as follows:

[0037] Configuration methacrylate volume content is 37.5% chlorobenzene solution, polytetrafluoroethylene nano-powder (polymerization degree is 5 * 10 3 , with an average particle diameter of 300nm) placed in the aforementioned solution (the mass ratio of polytetrafluoroethylene nano-powder to the aforementioned solution is 1:2), and treated with plasma in an argon atmosphere for 100 s to make formazan The chemical graft polymerization of acrylate on the surface of polytetrafluoroethylene nano powders forms a layer of graft polymer on the surface, and obtains a polytetrafluoroethylene with an average particle size of 300nm and an ester group content of 20ppm. Tetrafluoroethylene nanoparticles.

[0038] The structural formula of the polytetrafluoroethylene nanoparticles containing ester groups on the surface is as formula (I), wherein,

Embodiment 2

[0040] The preparation method of the polytetrafluoroethylene nano-particle containing ester group on the surface is as follows:

[0041] Configuration ethyl methacrylate volume content is the chlorobenzene solution of 37.5%, polytetrafluoroethylene nano-powder (polymerization degree is 5 * 10 3 , with an average particle diameter of 350nm) placed in the aforementioned solution (the mass ratio of polytetrafluoroethylene nano-powder to the aforementioned solution is 1:2), and treated with plasma in an argon atmosphere for 150s to make formazan Ethyl acrylate undergoes chemical graft polymerization on the surface of polytetrafluoroethylene nano-powders, forming a layer of graft polymer on the surface, and obtaining a surface containing ester groups with an average particle size of 350nm and an ester group content of 30ppm. PTFE nanoparticles.

[0042] The structural formula of the polytetrafluoroethylene nanoparticles containing ester groups on the surface is as formula (I), whe...

Embodiment 3

[0044] The preparation method of the polytetrafluoroethylene nano-particle containing ester group on the surface is as follows:

[0045] Configuration propyl methacrylate volume content is the chlorobenzene solution of 37.5%, polytetrafluoroethylene nano-powder (polymerization degree is 5 * 10 3 , with an average particle diameter of 400nm) placed in the aforementioned solution (the mass ratio of polytetrafluoroethylene nano-powder to the aforementioned solution is 1:2), and treated with plasma in an argon atmosphere, and the treatment time is 200s to make formazan Propyl acrylate is chemically grafted and polymerized on the surface of polytetrafluoroethylene nanopowders, forming a layer of graft polymer on the surface, and obtaining a surface containing ester groups with an average particle size of 400nm and an ester group content of 40ppm. PTFE nanoparticles.

[0046] The structural formula of the polytetrafluoroethylene nanoparticles containing ester groups on the surface ...

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Abstract

The invention relates to a method for improving the wear resistance of polyester industrial yarn. After introducing modified polytetrafluoroethylene into polyester melt, spinning is carried out according to the processing technology of polyester industrial yarn; Ethylene glycol formate, the intrinsic viscosity of polyester melt is 0.85 ~ 1.20dL / g; modified polytetrafluoroethylene is polytetrafluoroethylene nanoparticles with ester groups on the surface; polytetrafluoroethylene nanoparticles with ester groups on the surface The average particle size of the particles does not exceed 600nm, the mass percentage of ester groups is 10-100ppm; the extrusion temperature is 270-280°C, and the cooling temperature is 25-30°C; the content of modified polytetrafluoroethylene in the prepared polyester industrial yarn Not more than 0.5wt%, oligomer content not more than 2wt%, the surface static friction coefficient of polyester industrial yarn is 0.08 ~ 0.15, according to the textile industry standard fabric surface friction performance test method FZ / T 01054‑2012 using 2.5kg hexagonal rod After 2500 friction tests, the strength retention rate is ≥95%. In the present invention, surface-modified polytetrafluoroethylene nanometer powder is added to the polyester to significantly reduce the surface friction coefficient and greatly improve its wear resistance.

Description

technical field [0001] The invention belongs to the technical field of polyester industrial yarns, and relates to a method for improving the abrasion resistance of polyester industrial yarns. Background technique [0002] Polyester industrial yarn is used in bags, safety belts, cables, conveyor belts and other fields. During use, it will be subject to friction and cause appearance damage and loss of mechanical properties. Therefore, improving the wear resistance of polyester industrial yarn can effectively improve the use of the above products. life. [0003] In the field of practical application, polyester industrial yarns used in automobile safety belts have strict requirements on wear resistance. In industrial production, polyester industrial yarns are usually post-treated with sizing solutions containing polyacrylamide, but due to the There are few active binding groups on the surface of the polyester industrial yarn, so the binding force between the sizing solution and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10
CPCD01F6/92D01F1/10
Inventor 张玉梅陈康张晶晶汤方明邵义伟王丽丽陈瑞
Owner JIANGSU HENGLI CHEM FIBER