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High-modulus low-shrinkage creep-resistant activated polyester industrial yarn and preparation method thereof

A technology of high modulus, low shrinkage and creep resistance, applied in the direction of single-component copolyester rayon, conjugated synthetic polymer rayon, melt spinning, etc., to improve hydrolysis resistance and increase relative molecular weight Quality, effect of extending application range

Active Publication Date: 2014-01-22
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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  • High-modulus low-shrinkage creep-resistant activated polyester industrial yarn and preparation method thereof
  • High-modulus low-shrinkage creep-resistant activated polyester industrial yarn and preparation method thereof
  • High-modulus low-shrinkage creep-resistant activated polyester industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0060] 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;

[0061] Preparation of fluor...

Embodiment 2

[0069] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0070] 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;

[0071] Preparation of fl...

Embodiment 3

[0079] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0080] 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;

[0081] Preparation of fl...

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Abstract

The invention relates to a high-modulus low-shrinkage creep-resistant activated polyester industrial yarn and a preparation method thereof. The preparation method comprises the preparation of a high-viscosity creep-resistant polyester chip and the preparation of the high-modulus low-shrinkage creep-resistant activated polyester industrial yarn; polyester is subjected to solid phase polycondensation for viscosifying and then is blended and reacted with a fluorine-containing epoxy compound to obtain the high-viscosity creep-resistant polyester chip; then the high-viscosity creep-resistant polyester chip is subjected to metering, extruding, cooling, oiling, stretching, heat setting, oiling of an activating oiling agent, winding and pre-activating treatment to obtain the high-modulus low-shrinkage creep-resistant activated polyester industrial yarn. The high-modulus low-shrinkage creep-resistant activated polyester industrial yarn has certain creep resistance, hydrolysis resistance and performance stability, can be used in a high-temperature high-humidity environment for a long time, and has great prospect in the fields of tires, mechanical rubber products, plastic packaging, waterproof fabrics, ropes, mooring ropes, marine fibers and the like.

Description

technical field [0001] The invention relates to a high-modulus low-shrinkage activated industrial yarn of creep-resistant polyester and a preparation method thereof, in particular to a high-density creep-resistant polyester modified by using a fluorine-containing epoxy compound as an end-capping agent. Low-shrinkage activated industrial yarn 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-modulus low-shrinkage polyester industrial yarn has excellent properties such as high initial modulus, high breaking strength, low dry heat shrinkage, low elongation, and good impact resistance. High-modulus low-shrinkage polyester activated industrial yarn It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F8/14D01D5/08D01D5/096D01D5/088C08G81/00
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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