Low-shrinkage activated polyester industrial yarn and preparation method thereof

An activated and industrial yarn technology, applied in the direction of single-component polyester rayon, single-component copolyester rayon, fiber type, etc., can solve fiber unevenness, spinneret fiber quality, fiber oligomerization High polymer content, low oligomer content, etc.

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

[0008] 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, the excessive residual oligomers in the spinneret affect the fiber quality and the high content of fiber oligomers To solve the problem, provide a low-shrinkage activated polyester industrial yarn with uniform spinning and low oligomer content and its preparation method

Method used

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  • Low-shrinkage activated polyester industrial yarn and preparation method thereof
  • Low-shrinkage activated polyester industrial yarn and preparation method thereof
  • Low-shrinkage activated polyester industrial yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A preparation method of low-shrinkage activated polyester industrial yarn, the steps are as follows:

[0070] (1) preparation of modified polyester;

[0071] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 into a slurry, and add antimony trioxide , 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 It is 0.05% of the weight of terephthalic acid, wherein the structural formula of 2-ethyl-2-methyl-1,3-propanediol is ...

Embodiment 2

[0079] A preparation method of low-shrinkage activated polyester industrial yarn, the steps are as follows:

[0080] (1) preparation of modified polyester;

[0081] (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 ethylene glycol antimony, 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-pro...

Embodiment 3

[0089] A preparation method of low-shrinkage activated polyester industrial yarn, the steps are as follows:

[0090] (1) preparation of modified polyester;

[0091] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 into a slurry, add antimony acetate and titanium dioxide 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:

[0092]

[0093] (b) polycondensation reaction; after the esterification reaction ends...

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Abstract

The invention relates to a low-shrinkage activated polyester industrial yarn and a preparation method thereof. The preparation method comprises: carrying out solid phase condensation polymerization tackifying on a modified polyester, melting, metering, extruding, cooling, oiling, drawing, carrying out heat setting, oiling with an activated oil agent, winding, and carrying out pre-activation treatment, wherein the oil agent for oiling contains crown ether, the content of the crown ether is 67.30-85.58 wt%, and the material of the prepared polyester industrial yarn is the modified polyester withthe molecular chain including a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having the branched chain. According to the present invention, the preparation method is simple and reasonable; and the dry heat shrinkage rates of the finally obtained low-shrinkage activated polyester industrial yarn respectively are 5.5+ / -0.8% and 2.8-5.8% at the conditions comprising 177 DEG C, 10 min and 0.05 cN / dtex and the conditions comprising 190 DEG C, 15 min and 0.01 cN / dtex, and the wicking height is less than or equal to 5 mm.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and relates to a low-shrinkage activated 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. It is widely used in the fields of fiber, bottle packaging, film and sheet, etc., and its output is increasing year by year, and its position in the industry has been significantly improved. [0003] However, during the polycondensation reaction of synthesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84D01F6/92D01F11/08C08G63/183D01D5/096D06M13/11D06M13/224D06M13/02D06M13/292D06M13/295D06M13/256D06M101/32
CPCC08G63/183D01D5/096D01F6/84D01F6/92D01F11/08D06M13/02D06M13/11D06M13/224D06M13/256D06M13/292D06M13/295D06M2101/32
Inventor 王丽丽孙晓华赵慧荣窦弘
Owner JIANGSU HENGLI CHEM FIBER
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