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

A high-modulus, low-shrinkage, creep-resistant technology, applied in the direction of single-component copolyester rayon, conjugated synthetic polymer rayon, melt spinning, etc., to improve creep resistance and expand the scope of application , the effect of increasing the relative molecular mass

Active Publication Date: 2015-05-13
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 polyester industrial yarn and preparation method thereof
  • High-modulus low-shrinkage creep-resistant polyester industrial yarn and preparation method thereof
  • High-modulus low-shrinkage creep-resistant polyester industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0057] 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% of 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;

[0058] Preparation of ...

Embodiment 2

[0066] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0067] 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;

[0068] Preparation of fl...

Embodiment 3

[0076] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0077] 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% of 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, namely obtain the crystal of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether;

[0078] Preparation of fluori...

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Abstract

The invention relates to a high-modulus low-shrinkage creep-resistant 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 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 and winding to obtain the high-modulus low-shrinkage creep-resistant polyester industrial yarn. The high-modulus low-shrinkage creep-resistant 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 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 industrial yarn of creep-resistant polyester and a preparation method thereof, in particular to a high-modulus low-shrinkage industrial yarn of creep-resistant polyester modified with a fluorine-containing epoxy compound as an end-capping agent. Shrink 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 is mainly used in automobiles and transmission belts due to its high initial modulus, high breaking strength, low dry heat shrinkage, low elongation, and good impact resistance. In the industrial field, there is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84D01F8/14D01D5/08D01D5/096D01D5/088C08G81/00
Inventor 高亮汤方明李文刚康爱旗王丽丽
Owner JIANGSU HENGLI CHEM FIBER
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