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1,2-propylene glycol modified terylene fully drawn yarn

A technology of polyester drawn yarn and fully drawn yarn is applied in the field of synthetic fibers, which can solve the problems of low thermal shrinkage and high crystallinity, and achieve the effects of uniform dyeing, stable fiber shrinkage and excellent spinning performance.

Inactive Publication Date: 2012-11-21
JIANGSU YINGXIANG FIBER
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0018] Conventional polyester fibers have high crystallinity and low heat shrinkage, generally less than 10%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation process of modified polyester:

[0039] First, on the continuous polyester equipment, the monomers of terephthalic acid (PTA), 1, 2-propanediol and ethylene glycol (EG) are mixed according to the The molar ratio of (EG) monomers is 1:0.12:1.10, each of which is continuously and stably metered and added to the slurry tank for beating, and tetrabutyl titanate and ethylene glycol antimony are added to the beating tank, of which The molar ratio of the addition amount of ester to terephthalic acid is 0.01%, and the molar ratio of the addition amount of ethylene glycol antimony to phthalic acid is 0.02%;

[0040] Then the above slurry is continuously and stably transported to the reaction kettles of esterification-I, esterification-II and esterification-III, and stabilizers are continuously added to the reaction kettles of esterification-III at the same time; the esterified products are pumped to the polycondensation section, and after Modified polyester melt is ...

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PUM

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Abstract

The present invention relates to a preparation method for a 1,2-propylene glycol modified terylene fully drawn yarn. The method comprises preparation steps of a condensation polymerization modified polyester melt and a preparation process of a direct spinning terylene fully drawn yarn (FDY). In the preparation process of the condensation polymerization modified polyester melt, p-phthalic acid (PTA), 1,2-propylene glycol, and an ethylene glycol (EG) monomer are adopted as raw materials to prepare a modified copolyester melt; the resulting polyester melt is directly subjected to melt conveying, extruding with a metering pump and a spinning assembly, air blowing cooling and oiling, then passes through a channel, a first godet roller and a second godet, and is finally subjected to winding to prepare the modified terylene fully drawn yarn. The modified terylene fully drawn yarn prepared by the method of the present invention has characteristics of stable fiber shrinkage, uniform dyeing, and excellent spinning performance.

Description

technical field [0001] The invention relates to a synthetic fiber, in particular to a modified polyester full-drawn yarn. Background technique [0002] As one of the three main fibers in synthetic fibers, polyester is widely used in clothing fabrics and other non-clothing fields because of its excellent physical and chemical properties. Since its inception, polyester products have also been used by downstream users as the main textile raw material to weave various textiles due to their good drapability, high strength and crispness. With the globalization of the economy and the internationalization of the market, people's requirements for clothing are getting higher and higher. Not only must they be comfortable, but they must also be functional. There is a constant need to improve performance to meet weaving requirements. [0003] In the past ten years, my country's polyester industry has developed rapidly. The output of polyester fiber has grown from 5.165 million tons at ...

Claims

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Application Information

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IPC IPC(8): D01F6/92C08G63/183C08G63/78D01D13/00D01D1/09
Inventor 沈家康钮真荣王国柱赵广兵
Owner JIANGSU YINGXIANG FIBER
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