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High-strength creep-resistant polyester industrial yarn and preparation method thereof

A polyester industrial yarn and creep resistance technology, applied in the field of spinning, can solve the problems of elongation and deformation of the tire frame, driving accidents, etc., and achieve the effect of reducing the degree of creep, increasing the elastic modulus, and improving the mechanical properties.

Active Publication Date: 2021-12-21
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As one of the cord materials, polyester industrial yarn has a close relationship between its creep phenomenon and its performance. If the creep degree is large, it will cause the elongation and deformation of the tire frame, which will lead to traffic accidents.

Method used

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  • High-strength creep-resistant polyester industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A preparation method of high-strength creep-resistant polyester industrial yarn, the specific steps are as follows:

[0055] (1) preparation of modified polyester;

[0056] (1.1) Esterification reaction;

[0057] Make a slurry of terephthalic acid, ethylene glycol and 2-(4-pyridine) terephthalic acid with a molar ratio of 1:1.2:0.03, add catalyst (antimony trioxide) and stabilizer (triphenyl phosphate ) are mixed evenly, the addition of catalyst and stabilizer is respectively 0.01wt% and 0.03wt% of the addition of terephthalic acid, and pressurizes in nitrogen atmosphere to carry out esterification reaction, pressurized pressure is 0.2MPa, esterification reaction The temperature is 259°C, when the amount of water distilled out in the esterification reaction reaches 96% of the theoretical value, it is the end point of the esterification reaction;

[0058] (1.2) polycondensation reaction;

[0059] After the esterification reaction is over, start the polycondensation re...

Embodiment 2

[0076] A preparation method of high-strength creep-resistant polyester industrial yarn, the specific steps are as follows:

[0077] (1) preparation of modified polyester;

[0078] (1.1) Esterification reaction;

[0079] Make a slurry of terephthalic acid, ethylene glycol and 2-(4-pyridine) terephthalic acid with a molar ratio of 1:1.5:0.03, add catalyst (antimony trioxide) and stabilizer (triphenyl phosphate ) are mixed evenly, the addition of catalyst and stabilizer is respectively 0.01wt% and 0.04wt% of the addition of terephthalic acid, and then pressurized in nitrogen atmosphere to carry out esterification reaction, pressurized pressure is 0.2MPa, esterification reaction The temperature is 260°C, when the amount of water distilled in the esterification reaction reaches 96% of the theoretical value, it is the end of the esterification reaction;

[0080] (1.2) polycondensation reaction;

[0081] After the esterification reaction is over, start the polycondensation reactio...

Embodiment 3

[0098] A preparation method of high-strength creep-resistant polyester industrial yarn, the specific steps are as follows:

[0099] (1) preparation of modified polyester;

[0100] (1.1) Esterification reaction;

[0101] Make a slurry of terephthalic acid, ethylene glycol and 2-(4-pyridine) terephthalic acid with a molar ratio of 1:2.0:0.03, add catalyst (antimony trioxide) and stabilizer (trimethyl phosphate ) mixed uniformly, the addition of catalyst and stabilizer is respectively 0.02wt% and 0.05wt% of the addition of terephthalic acid, and then pressurized in a nitrogen atmosphere to carry out esterification reaction, pressurized pressure is 0.3MPa, esterification reaction The temperature is 254°C, when the amount of water distilled in the esterification reaction reaches 95% of the theoretical value, it is the end point of the esterification reaction;

[0102] (1.2) polycondensation reaction;

[0103] After the esterification reaction is over, start the polycondensation re...

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Abstract

The invention relates to a high-strength creep-resistant polyester industrial yarn and a preparation method thereof. The preparation method is as follows: spinning, winding and coordination treatment of modified polyester to obtain high-strength creep resistance Polyester industrial yarn; conditions for complexation treatment: 60-72 hours at 80-100°C; complexing agent is AgNO 3 , FeCl 2 , CuCl 2 、NiCl 2 ; The polyester segment of the high-strength creep-resistant polyester industrial yarn made includes a terephthalic acid segment, an oxalic acid segment and a 2-(4-pyridine) terephthalic acid segment, and different polyester The 2-(4-pyridine) terephthalic acid chain segment of the chain segment is passed through the metal ion (Ag + , Fe 2+ 、Cu 2+ or Ni 2 ) coordination; the molar ratio of terephthalic acid segment and 2‑(4‑pyridine) terephthalic acid segment is 1:0.03~0.05; 2‑(4‑pyridine) terephthalic acid segment participates in coordination is the N atom on pyridine. The invention coordinates metal ions with 2-(4-pyridine) terephthalic acid to greatly reduce the creep degree of polyester fibers.

Description

technical field [0001] The invention belongs to the technical field of spinning, and relates to a high-strength creep-resistant polyester industrial yarn and a preparation method thereof. Background technique [0002] Polyester industrial yarn has excellent physical and mechanical properties such as high strength, high modulus, low elongation, impact resistance, fatigue resistance, good heat resistance, and the elongation value in wet state is basically the same as that in dry state. As one of the four major contemporary rubber skeleton materials (viscose, nylon, polyester, and steel wire), it has broad application prospects in vehicle tires, conveyor belts, conveyor belts, safety belts, and water hoses. [0003] Under the action of constant temperature and constant stress, the deformation of polymer gradually increases with time, which is called creep. Creep is one of the main problems existing in organic fibers, and creep damage is also an urgent problem that needs to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84C08G63/685C08G63/78
CPCD01F6/84C08G63/6856C08G63/78Y02P70/62C08G63/183C08G63/85D06M11/13D06M11/28D06M11/83D01D5/16D02G3/02D10B2331/04D10B2401/062D10B2401/063
Inventor 汤方明王山水王丽丽张烨魏存宏张玉梅赵艳丽
Owner JIANGSU HENGLI CHEM FIBER
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