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Marine creep-resistant polyester high-strength low-elongation industrial yarn and its preparation method

A high-strength, low-elongation, and creep-resistant technology is applied in the direction of single-component polyester rayon, rayon manufacturing, and bundling of newly extruded filaments to improve hydrolysis resistance, increase relative molecular weight, and expand The effect of application range

Active Publication Date: 2014-02-05
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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  • Marine creep-resistant polyester high-strength low-elongation industrial yarn and its preparation method
  • Marine creep-resistant polyester high-strength low-elongation industrial yarn and its preparation method
  • Marine creep-resistant polyester high-strength low-elongation industrial yarn and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0074] 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;

[0075] Preparation of fluor...

Embodiment 2

[0083] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0084] 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;

[0085] Preparation of fluori...

Embodiment 3

[0093] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0094] 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;

[0095] Preparation of fluorine-...

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Abstract

The invention relates to a marine creep-resistant polyester high-strength low-elongation industrial yarn and its preparation method. The preparation method includes preparation of a creep-resistant polyester hyperviscous slice and preparation of a marine creep-resistant polyester high-strength low-elongation industrial yarn. According to the preparation method, polyester is tackified through solid phase polycondensation and then the tackified polyester is mixed with a fluorine-containing epoxy compound and a carbodiimide stabilizer to react so as to obtain the creep-resistant polyester hyperviscous slice; and the marine creep-resistant polyester high-strength low-elongation industrial yarn is prepared from the creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The marine creep-resistant polyester high-strength low-elongation industrial yarn provided by the invention has a certain creep resistance, hydrolysis resistance and stability, can be applied in a hot and humid environment for a long time, and has a huge application prospect in the fields of marine mooring ropes, fishing nets and the like.

Description

technical field [0001] The invention relates to a high-strength and low-elongation industrial yarn of creep-resistant polyester for marine use and a preparation method thereof, in particular to a creep-resistant polyester for marine use modified by using fluorine-containing epoxy compound as an end-capping agent High-strength and low-elongation 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-strength and low-elongation polyester industrial yarn, also known as ordinary standard polyester industrial yarn, is a large type of polyester industrial yarn. It has the characteristics of high strength, low elongation, high modulus, and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F8/14D01F1/10C08G81/00D06M15/657D06M15/643D01D5/08D01D5/088D01D5/096D01D7/00
Inventor 赵慧荣杨大矛王鹏谢志辉钟垂军
Owner JIANGSU HENGLI CHEM FIBER
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