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Creep-resistant polyester high-strength safety belt industrial yarn and preparation method thereof

A creep-resistant, safety belt technology, applied in the direction of single-component copolyester rayon, conjugated synthetic polymer rayon, melt spinning, etc., to improve creep resistance, improve hydrolysis resistance, The effect of increasing the relative molecular mass

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 safety belt industrial yarn and preparation method thereof
  • Creep-resistant polyester high-strength safety belt industrial yarn and preparation method thereof
  • Creep-resistant polyester high-strength safety belt industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0058] 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;

[0059] Preparation of fluor...

Embodiment 2

[0067] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0068] 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, that is to obtain 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether crystals;

[0069] Preparation of fluo...

Embodiment 3

[0077] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0078] 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 17h; 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, that is to obtain 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether crystals;

[0079] Preparation of fluorine-...

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Abstract

The invention relates to a creep-resistant polyester high-strength safety belt industrial yarn and a 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 safety belt 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 safety belt industrial yarn is prepared. The creep-resistant polyester high-strength safety belt 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 can be applied in high-strength safety belts.

Description

technical field [0001] The invention relates to a high-strength safety belt industrial yarn of creep-resistant polyester and a preparation method thereof, in particular to a high-strength safety belt industrial yarn of creep-resistant polyester modified with 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 safety belt polyester industrial yarn, because of its particularly high strength, is widely used in the fields of drag cables, wire ropes and slings. The breaking strength of ordinary high-strength polyester industrial yarn produced in China is generally 7.8-8.0cN / dtex, ...

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 陈建华汤方明尹立新王丽丽杨超明
Owner JIANGSU HENGLI CHEM FIBER
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