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Production method of hygroscopic polyester fiber

A technology of polyester fiber and manufacturing method, applied in the field of polyester fiber manufacturing, can solve problems such as no progress, and achieve the effects of excellent fiber physical properties, sufficient wearing comfort, and good spinnability

Active Publication Date: 2020-01-24
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there has been little progress in the research on the production method of the hygroscopic fiber with good spinnability and good moisture absorption and release performance, and the production method of the hygroscopic fiber that satisfies both the moisture absorption and release property and the spinnability has been a long-awaited subject.

Method used

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  • Production method of hygroscopic polyester fiber
  • Production method of hygroscopic polyester fiber
  • Production method of hygroscopic polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0085] 784 g of ethylene glycol, 993 g of terephthalic acid, and 331 g of isophthalic acid were subjected to esterification reaction, followed by polycondensation reaction. First, add all the terephthalic acid and isophthalic acid, 533g of ethylene glycol, 1.2g of calcium acetate, and 0.88g of tetrabutyl titanate into the reactor with a rectification tower, and heat up from 130°C to 235°C for reaction After 3 hours, after the transesterification reaction was completed, 0.57 g of methyl trimellitic acid was added. Then move to the polycondensation reactor, and the temperature is raised from 240°C to 285°C under vacuum for post-condensation reaction for 4 hours.

manufacture example 2

[0086] [Manufacturing example 2]

[0087] Use antimony trioxide (0.45g) instead of tetrabutyl titanate as the reaction catalyst, and the others are the same as in Production Example 1.

manufacture example ３

[0088] [Manufacturing example 3]

[0089] 784 g of ethylene glycol and 1,324 g of terephthalic acid were subjected to esterification reaction, followed by polycondensation reaction. First, add all the terephthalic acid, 533g of ethylene glycol, and 0.88g of tetrabutyl titanate into the reactor with a rectification tower, and start the esterification reaction at a temperature of 250°C and a vacuum of 400mmHg, and slowly While increasing the temperature, the residual ethylene glycol was continuously added. Then move to polycondensation reaction tank, carry out polymerization reaction under vacuum condition and temperature 285 ℃.

[0090] [Manufacturing example 4]

[0091] Use antimony trioxide (0.45g) instead of tetrabutyl titanate as the reaction catalyst, and the others are the same as in Production Example 3.

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Abstract

The present invention provides a manufacturing method of polyester fibers with characteristics of high moisture absorption, high moisture desorption, high fiber matter property, excellent spinning property and high passing property. The manufacturing method comprises: carrying out melt mixing on a polyester A with a melting point of less than or equal to 255 DEG C and an antimony atom content of less than or equal to 50 ppm and poly(N-vinyl lactam) to prepare a master batch polymer, cooling and pelletizing are sequentially performed, or the obtained polymer is continuously fed into a spinning apparatus directly in a molten state, the master batch polymer and a polyester B are mixed according to a weight ratio of 1:0.5-1:10 in the spinning apparatus, and discharging is performed through a yarn spraying plate so as to prepare the polyester fibers with characteristics of moisture absorption and moisture desorption.

Description

technical field [0001] The invention provides a method for producing polyester fibers with good hygroscopicity and release properties. Background technique [0002] Polyester fibers represented by polyethylene terephthalate and polybutylene terephthalate have excellent mechanical strength and heat resistance, and are widely used for clothing. However, these polyester fibers have extremely low moisture absorption and release properties. When underwear, underwear, sportswear, etc. are used in direct contact with the skin or close to the skin, when the skin sweats, stuffy and sticky phenomena will occur. Moisture-releasing natural fibers are relatively poor in wearing comfort, so their applications in these fields are limited. [0003] For this reason, patent document 1 discloses a kind of technical scheme, to the fabric that polyester fiber is made, add hygroscopic component in advanced processing process. However, this method suffers from the problem that the hand of the fa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01F8/14
Inventor 范志恒成娟望月克彦加藤泰崇斋藤久人吉宫隆之
Owner TORAY FIBER RES INST(CHINA) CO LTD
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