Creep-resistant polyester high-strength low-shrinkage industrial yarn and preparation method thereof

A creep-resistant, industrial yarn technology, applied in the direction of single-component copolyester rayon, conjugated synthetic polymer rayon, melt spinning, etc., to expand the application range, increase the relative molecular weight, improve The effect of hydrolysis resistance

Active Publication Date: 2014-01-29
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on creep resistance of polyester fibers

Method used

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  • Creep-resistant polyester high-strength low-shrinkage industrial yarn and preparation method thereof
  • Creep-resistant polyester high-strength low-shrinkage industrial yarn and preparation method thereof
  • Creep-resistant polyester high-strength low-shrinkage industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0056] In a nitrogen atmosphere, mix epichlorohydrin and 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]diphenol at a molar ratio of 4:1 , add 1.5% 15mol / L sodium hydroxide solution of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol mass, at room temperature Stir the reaction for 16h; then cool to room temperature, then add 30% of the mass of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol with anhydrous carbonic acid Sodium-saturated 5mol / L sodium hydroxide solution, stirred and reacted at room temperature for 10h; then extracted with chloroform, and the resulting organic phase was evaporated to remove chloroform and excess epichlorohydrin to obtain a thick liquid, which was added to anhydrous Recrystallization in ethanol to obtain crystals of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether;

[0057] Preparation of fluor...

Embodiment 2

[0065] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0066] In a nitrogen atmosphere, mix epichlorohydrin and 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]diphenol at a molar ratio of 4:1 , add 2.0% 10mol / L sodium hydroxide solution of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol mass, at room temperature Stir the reaction for 18 hours; cool to room temperature, then add 40% of the mass of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol with anhydrous sodium carbonate Saturated 3mol / L sodium hydroxide solution, stirred and reacted at room temperature for 15h; then extracted with chloroform, the resulting organic phase was evaporated to remove chloroform and excess epichlorohydrin to obtain a thick liquid, which was added to absolute ethanol Medium recrystallization, namely obtain the crystal of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether;

[0067] Preparation of fl...

Embodiment 3

[0075] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0076] In a nitrogen atmosphere, mix epichlorohydrin and 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]diphenol at a molar ratio of 4:1 , add 1.8% 12mol / L sodium hydroxide solution of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol mass, at room temperature Stir the reaction for 17 hours; cool to room temperature, then add 35% of the mass of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol with anhydrous sodium carbonate Saturated 4mol / L sodium hydroxide solution, stirred and reacted at room temperature for 13h; then extracted with chloroform, the resulting organic phase was evaporated to remove chloroform and excess epichlorohydrin to obtain a thick liquid, which was added to absolute ethanol Medium recrystallization, namely obtain the crystal of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether;

[0077] Preparation of fl...

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Abstract

The invention relates to creep-resistant polyester high-strength low-shrinkage industrial yarn and preparation method thereof. The method comprises the preparation of creep-resistant polyester high-viscosity slice and the preparation of the creep-resistant polyester high-strength low-shrinkage industrial yarn. According to the invention, polyester is subjected to tackifying through solid-phase polycondensation; the polyester is subjected to a blending reaction with a fluorine-containing epoxy compound, such that the creep-resistant polyester high-viscosity slice is obtained; the creep-resistant polyester high-viscosity slice is subjected to measuring, extruding, cooling, oiling, stretching, heat setting, and winding, such that the creep-resistant polyester high-strength low-shrinkage industrial yarn is prepared. The creep-resistant polyester high-strength low-shrinkage industrial yarn has certain creep resistance, hydrolysis resistance, and performance stability. The yarn can be applied in high-temperature high-humidity environments for a long time. The yarn has great application prospect in the fields such as plastic packaging, waterproof fabrics, ropes, cables, marine fiber, and the like.

Description

technical field [0001] The invention relates to a high-strength and low-shrinkage industrial yarn of creep-resistant polyester and a preparation method thereof, in particular to a high-strength and low-shrinkage industrial yarn of creep-resistant polyester modified by using a fluorine-containing epoxy compound as an end-capping agent. Silk and its preparation method. Background technique [0002] Polyester (PET) is one of the most widely used synthetic polymers by humans. It has high strength, high modulus and good heat resistance. It is the earliest linear thermoplastic polymer to achieve industrial applications. It is used in plastic packaging, film And chemical fiber and other fields have been widely used. High-strength and low-shrinkage polyester industrial yarn is a large category of polyester. Due to its high strength, low thermal shrinkage rate, and excellent impact resistance, the fabric or rubber products made of it have good dimensional stability and heat resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F8/14D01D5/08D01D5/088C08G81/00
Inventor 于兆强王丽丽李文刚汤方明康爱旗
Owner JIANGSU HENGLI CHEM FIBER
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