High-strength colored polyester industrial yarn and preparation method thereof

A technology of colored polyester, industrial yarn, applied in the direction of single-component polyester rayon, fiber type, textile and papermaking, etc., can solve the problems of uneven fiber spinneret spinnability and so on

Active Publication Date: 2018-08-10
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the non-uniformity of the fibers caused by the fast volatilization of the oil agent in the prior art and the bonding on the surface of the fibers, too many residual oligomers in the spinneret affect the quality of the fibers

Method used

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  • High-strength colored polyester industrial yarn and preparation method thereof
  • High-strength colored polyester industrial yarn and preparation method thereof
  • High-strength colored polyester industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A preparation method of high-strength colored polyester industrial yarn, the steps are as follows:

[0065] (1) preparation of modified polyester;

[0066] (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-propanediol is as...

Embodiment 2

[0074] A preparation method of high-strength colored polyester industrial yarn, the steps are as follows:

[0075] (1) preparation of modified polyester;

[0076] (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 evenly with trimethyl phosphate, 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-diethyl-1,3-pr...

Embodiment 3

[0084] A preparation method of high-strength colored polyester industrial yarn, the steps are as follows:

[0085] (1) preparation of modified polyester;

[0086] (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 esterification reaction under pressure in a nitrogen atmosphere. 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-1,3-propanediol is as follows:

[0087]

[0088] (b) polycondensation reaction; after the esterification rea...

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Abstract

The invention relates to a high-strength colored polyester industrial yarn and a preparation method thereof. The preparation method comprises: carrying out solid phase condensation polymerization tackifying on a modified polyester and color masterbatch, melting, metering, extruding, cooling, oiling, drawing, carrying out heat setting, and winding to prepare the high-strength colored polyester industrial yarn, wherein the oil agent for oiling contains 67.30-85.58 wt% of crown ether, the main material of the industrial yarn is the modified polyester, the molecular chain of the modified polyestercomprises a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain, the structure formula of the diol chain segment having the branched chain is defined in the specification, R1 and R2 are respectively and independently selected from straight chain alkylidene with a carbon atom number of 1-3, R3 is selected from alkyl with a carbon atom number of 1-5, R4 is selected from alkyl with a carbon atom number of 2-5, and the breaking strength of the prepared industrial yarn is more than or equal to 7.0 cN/dtex. According to the present invention, the method is simple and reasonable, and the obtained industrial yarn has advantages of high breaking strength and good uniformity.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a high-strength colored 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 crispness and other advantages, 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...

Claims

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Application Information

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IPC IPC(8): D01F6/92C08G63/183D06M13/11D06M13/292D06M15/53D06M13/224D06M13/256D06M101/32
CPCC08G63/183D01F6/92D06M13/11D06M13/224D06M13/256D06M13/292D06M15/53D06M2101/32
Inventor 汤方明张烨杨大矛蒋丽波
Owner JIANGSU HENGLI CHEM FIBER
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