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Creep-resistant polyester ultralow-shrinkage industrial yarn and its preparation method

An ultra-low shrinkage and creep-resistant technology, applied in the direction of single-component copolyester artificial filaments, bundles of newly extruded filaments, conjugated synthetic polymer artificial filaments, etc., to improve hydrolysis resistance, expand The scope of application and the effect of increasing the relative molecular mass

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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  • Creep-resistant polyester ultralow-shrinkage industrial yarn and its preparation method
  • Creep-resistant polyester ultralow-shrinkage industrial yarn and its preparation method
  • Creep-resistant polyester ultralow-shrinkage industrial yarn and its preparation method

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% 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 fluor...

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% 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;

[0078] Preparation of fluo...

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Abstract

The invention relates to a creep-resistant polyester ultralow-shrinkage industrial yarn and its preparation method. The preparation method includes preparation of a creep-resistant polyester hyperviscous slice and preparation of a creep-resistant polyester ultralow-shrinkage 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 to react so as to obtain the creep-resistant polyester hyperviscous slice; and the creep-resistant polyester ultralow-shrinkage industrial yarn is prepared from the obtained creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The obtained creep-resistant polyester ultralow-shrinkage industrial yarn has a certain creep resistance, hydrolysis resistance and performance stability, can be used in a hot and humid environment for a long time, and has a huge prospect in the fields of plastic packing, waterproof fabric, ropes, cables, marine fiber and the like.

Description

technical field [0001] The invention relates to an ultra-low shrinkage industrial yarn of creep-resistant polyester and a preparation method thereof, in particular to an ultra-low-shrinkage 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. Polyester industrial yarn is widely used in different fields. For ultra-low shrinkage polyester industrial yarn, its structural characteristics are regular arrangement of PET molecules, high crystallization density, increased crystallinity and reduced dimensional shrinkage. It has the character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F8/14C08G81/00D01D5/08D01D5/088D01D5/096D01D7/00
Inventor 陈建华王丽丽汤方明尹立新杨超明
Owner JIANGSU HENGLI CHEM FIBER
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