A kind of ultra-high-strength industrial yarn of creep-resistant polyester and its preparation method

A creep-resistant, industrial yarn technology, applied in the direction of single-component copolyester rayon, bundle of newly sprayed filaments, conjugated synthetic polymer rayon, etc., to expand the scope of application and increase the relative Molecular mass, the effect of improving hydrolysis resistance

Active Publication Date: 2015-08-05
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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  • A kind of ultra-high-strength industrial yarn of creep-resistant polyester and its preparation method
  • A kind of ultra-high-strength industrial yarn of creep-resistant polyester and its preparation method
  • A kind of ultra-high-strength industrial yarn of creep-resistant polyester and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0056] 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 16 hours; then cool to room temperature, then add 5mol / L of 30% of the mass of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol Sodium hydroxide solution, the sodium hydroxide solution is a solution saturated with anhydrous sodium carbonate, stirred and reacted at room temperature for 10 h; then extracted with chloroform, and the resulting organic phase was obtained by distilling off chloroform and excess epichlorohydrin to obtain a thick like liquid, which was added to absolute ethanol for recrystallization to obtain 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]dip...

Embodiment 2

[0065] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0066] 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 of 3mol / L Sodium hydroxide solution, sodium hydroxide solution is a solution saturated with anhydrous sodium carbonate, stirred and reacted at room temperature for 15 hours; then extracted with chloroform, and the resulting organic phase was obtained by distilling off chloroform and excess epichlorohydrin to obtain a thick liquid, add it to absolute ethanol for recrystallization, and obtain 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl Crys...

Embodiment 3

[0075] Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0076] 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 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol mass of 35% of 4mol / L Sodium hydroxide solution, sodium hydroxide solution is a solution saturated with anhydrous sodium carbonate, stirred and reacted at room temperature for 13h; then extracted with chloroform, and the resulting organic phase was obtained by distilling off chloroform and excess epichlorohydrin to obtain a thick liquid, add it to absolute ethanol for recrystallization, and obtain 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl Crystals of base e...

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Abstract

The invention relates to a creep-resistant polyester ultrahigh-strength 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 ultrahigh-strength 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 ultrahigh-strength industrial yarn is prepared from the obtained creep-resistant polyester hyperviscous slice by metering, extrusion, cooling, oiling, stretching, thermoforming and coiling. The creep-resistant polyester ultrahigh-strength 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-high-strength industrial yarn of creep-resistant polyester and a preparation method thereof, in particular to an ultra-high-strength industrial yarn of creep-resistant polyester modified by using a fluorine-containing epoxy compound as an end-capping agent 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. Ultra-high-strength polyester industrial yarn is widely used in the fields of cables, wire ropes and slings because of its particularly high strength. The breaking strength of ordinary high-strength polyester industrial yarn produced in China is generally 7.8-8.0cN / dtex, which is difficult to me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84D01F8/14C08G81/00D01D5/08D01D5/088D01D5/096D01D7/00
Inventor 陈建华汤方明王丽丽康爱旗张元华
Owner JIANGSU HENGLI CHEM FIBER
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