High-extension and low-shrinkage polyester industrial filament and preparation method thereof

An industrial yarn, shrinking technology, applied in the direction of single-component polyester rayon, single-component copolyester rayon, filament/thread forming, etc., can solve the problem of low fiber quality and poor fiber mechanical properties. Good quality and other problems, to achieve the effect of high quality, simple and reasonable preparation process, and wide application range

Active Publication Date: 2018-06-08
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high-stretch and low-shrinkage polyester industrial yarn with good mechanical properties and high quality and a preparation method thereof in order to overcome the problems of poor fiber mechanical properties and low fiber quality in the prior art

Method used

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  • High-extension and low-shrinkage polyester industrial filament and preparation method thereof
  • High-extension and low-shrinkage polyester industrial filament and preparation method thereof
  • High-extension and low-shrinkage polyester industrial filament and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A preparation method of high-stretch and low-shrinkage polyester industrial yarn, the steps are as follows:

[0047] (1) preparation of modified polyester;

[0048] (a) Esterification reaction: terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 are made into a slurry, and antimony trioxide is added , titanium dioxide and triphenyl phosphate are mixed evenly, and the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 250°C. 90% of the value is the end point of the esterification reaction, wherein the addition of antimony trioxide is 0.01% of the weight of terephthalic acid, the addition of titanium dioxide is 0.20% of the weight of terephthalic acid, and the addition of triphenyl phosphate 0.05% of the weight of terephthalic acid, wherein the structural formula of 2-ethyl-2-methyl-1,3-propaned...

Embodiment 2

[0054] A preparation method of high-stretch and low-shrinkage polyester industrial yarn, the steps are as follows:

[0055] (1) preparation of modified polyester;

[0056] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol in a molar ratio of 1:1.3:0.04 into a slurry, add antimony ethylene glycol and titanium dioxide After mixing with trimethyl phosphate evenly, carry out the esterification reaction under pressure in a nitrogen atmosphere, the pressurized pressure is normal pressure, and the temperature of the esterification reaction is 260°C. 91% is the end point of the esterification reaction, wherein the addition of ethylene glycol antimony is 0.02% of the weight of terephthalic acid, the addition of titanium dioxide is 0.21% of the weight of terephthalic acid, and the addition of trimethyl phosphate is 0.02% of the weight of terephthalic acid. 0.03% by weight of phthalic acid, wherein the structural formula of 2,2-dieth...

Embodiment 3

[0062] A preparation method of high-stretch and low-shrinkage polyester industrial yarn, the steps are as follows:

[0063] (1) preparation of modified polyester;

[0064] (a) Esterification reaction: terephthalic acid, ethylene glycol, and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 are made into a slurry, and antimony acetate and titanium dioxide are added After mixing evenly with trimethyl phosphite, carry out the esterification reaction under pressure in a nitrogen atmosphere, the pressurized pressure is 0.1MPa, and the temperature of the esterification reaction is 252°C. 92% is the end point of the esterification reaction, wherein the addition of antimony acetate is 0.03% of the weight of terephthalic acid, the addition of titanium dioxide is 0.23% of the weight of terephthalic acid, and the addition of trimethyl phosphite is 0.03% of the weight of terephthalic acid. 0.01% by weight of phthalic acid, wherein the structural formula of 2-butyl-2-ethyl-1,...

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Abstract

The invention relates to a high-extension and low-shrinkage polyester industrial filament and a preparation method thereof. Modified polyester is subjected to solid phase polycondensation tackifying,melting, metering, extrusion, cooling, oiling, stretching, heat setting and winding to obtain the high-extension and low-shrinkage polyester industrial filament, wherein the high-extension and low-shrinkage polyester industrial filament is made of the modified polyester, and a molecular chain of the modified polyester consists of a terephthalic acid chain segment, an ethylene glycol chain segmentand a diol chain segment with a branched chain; the central value of elongation at break of the finally prepared high-extension and low-shrinkage polyester industrial filament is 11.0-12.0%, and the dry-hot shrinkage rate under the conditions of 177 DEG C, 10 min and 0.05 cN / dtex is 6.5-13.5%. The method is simple and reasonable, and the prepared high-extension and low-shrinkage polyester industrial filament has the advantages of good mechanical properties, high elongation at break and low dry-hot shrinkage, and has excellent popularization value.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a high-stretch and low-shrinkage polyester industrial yarn and a preparation method thereof. Background technique [0002] Since the appearance of polyethylene terephthalate (PET) fiber, it has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fiber in the world. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric prepared from it has wrinkle resistance. And good stiffness, so polyester fiber is widely used in clothing and home textiles and other fields. [0003] However, during the polycondensation reaction of synthesizing ethylene terephthalate, especially when producing linear high polymers, linea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F6/92C08G63/183D01D5/088D01D5/096
CPCC08G63/183D01D5/088D01D5/096D01F6/84D01F6/92
Inventor 张烨晏金龙张元华丁竹君
Owner JIANGSU HENGLI CHEM FIBER
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