Creep-resistant hydrolysis-resistance polyester FDY fiber and its preparation method

A technology of anti-hydrolysis and anti-creep, which is applied in the direction of fiber treatment, single-component copolyester artificial filament, melt spinning, etc., to achieve the effect of increasing relative molecular weight, improving hydrolysis resistance, and improving hydrolysis resistance

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

Method used

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  • Creep-resistant hydrolysis-resistance polyester FDY fiber and its preparation method
  • Creep-resistant hydrolysis-resistance polyester FDY fiber and its preparation method
  • Creep-resistant hydrolysis-resistance polyester FDY fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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 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;

[0067] Preparation of fluor...

Embodiment 2

[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 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;

[0075] Preparation of fl...

Embodiment 3

[0081]Preparation of 4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylene]diphenol diglycidyl ether:

[0082] 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;

[0083] Preparation of flu...

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Abstract

The invention relates to a creep-resistant hydrolysis-resistance polyester FDY fiber and its preparation method. The preparation method includes preparation of a creep-resistant hydrolysis-resistance polyester melt and preparation of the creep-resistant hydrolysis-resistance polyester FDY fiber. According to the preparation method, polyester is mixed with a fluorine-containing epoxy compound and a carbodiimide stabilizer or a fluorine-containing epoxy compound and a carbodiimide stabilizer are added during the synthesis process of polyester so as to obtain the creep-resistant hydrolysis-resistance polyester melt; and the creep-resistant hydrolysis-resistance polyester FDY fiber is prepared from the creep-resistant hydrolysis-resistance polyester melt by metering, extrusion, cooling, oiling, stretching and coiling. The obtained creep-resistant hydrolysis-resistance polyester FDY fiber has a certain creep resistance, hydrolysis resistance and performance stability, can be used in a wild humid environment or 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 a creep-resistant and hydrolysis-resistant polyester FDY fiber and a preparation method thereof, in particular to a creep-resistant fiber modified by using a fluorine-containing epoxy compound as an end-capping agent and a carbodiimide stabilizer. Hydrolyzed polyester FDY fiber 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. Introducing stretching in the spinning process can obtain coiled yarn with high degree of orientation and medium crystallinity, which is called fully drawn yarn, or FDY. FDY is mainly used as the warp yarn of water-jet loom fabrics. The conventional fully drawn yarns of polyester an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F8/14D01F11/08D01D5/08D01D5/088D01D5/092D01D5/096D01D5/16D01D10/02D01D7/00
Inventor 李哲汤方明李文刚王丽丽杨超明
Owner JIANGSU HENGLI CHEM FIBER
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