A kind of ultra-low shrinkage water-repellent polyester industrial yarn and its preparation method

An ultra-low shrinkage and industrial yarn technology, applied in the fiber field, can solve the problems of organic fluorine water and oil repellent finishing agent laminating difficulties, poor surface binding force of polyester fibers, lack of high polar groups, etc., to achieve improved finishing Effect and washing resistance, reduce production cost, improve the effect of use efficiency

Active Publication Date: 2016-10-05
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem is that it has poor adhesion to the surface of polyester fiber and poor washing resistance.
This is because PET is a symmetrical straight chain macromolecule, the molecular chain does not contain side chain groups, the regularity is very good, the crystallinity is high, and the structure lacks high polar groups; Oil-repellent finishing agent lamination brings difficulties

Method used

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  • A kind of ultra-low shrinkage water-repellent polyester industrial yarn and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] A preparation method of ultra-low shrinkage water-repellent polyester industrial yarn, comprising the following steps:

[0075] (1) Preparation of amino fatty acid ethylene glycol ester:

[0076] 1) Add dodecanedicarboxylic acid and methanol into the reactor at a molar ratio of 1:1.5, heat to 80°C under the catalysis of concentrated sulfuric acid, reflux for esterification, cool, separate and purify to obtain dodecanedicarboxylic acid Acid monomethyl ester; Described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of dodecane dicarboxylic acid;

[0077] 2) Dissolve the monomethyl dodecanedicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the monomethyl dodecanedicarboxylate concentration is 0.05mol / L , under a nitrogen atmosphere, react at 80 ° C, reflux, when no more gas is produced, add a certain amount of dilute sulfuric acid to react fo...

Embodiment 2

[0107] A preparation method of ultra-low shrinkage water-repellent polyester industrial yarn, comprising the following steps:

[0108] (1) Preparation of amino fatty acid ethylene glycol ester:

[0109] 1) Add pentacodecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 110°C, reflux for esterification, cool, separate and purify to obtain pentacodecane Dicarboxylic acid monomethyl ester; Described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of pentacosane dicarboxylic acid;

[0110] 2) The monomethyl pentacodecanedicarboxylate, lead tetraacetate and lithium bromide are dissolved in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentacodecanedicarboxylate is 0.07mol / L, under nitrogen atmosphere, react at 85°C, reflux, when no more gas is generated, add a certain amount of dilute...

Embodiment 3

[0140] A preparation method of ultra-low shrinkage water-repellent polyester industrial yarn, comprising the following steps:

[0141] (1) Preparation of amino fatty acid ethylene glycol ester:

[0142] 1) Add pentadecanedicarboxylic acid and methanol into the reactor in a molar ratio of 1:1.5, under the catalysis of concentrated sulfuric acid, heat to 85°C, reflux for esterification, cool, separate and purify to obtain pentadecanedicarboxylic acid acid monomethyl ester; described concentrated sulfuric acid refers to the sulfuric acid that mass concentration is 70%, and the concentrated sulfuric acid add-on is 3wt% of pentadecanedicarboxylic acid;

[0143] 2) Dissolve the monomethyl pentadecanedicarboxylate, lead tetraacetate and lithium bromide in benzene (molar ratio 1:1:1), wherein the concentration of monomethyl pentadecanedicarboxylate is 0.08mol / L , under nitrogen atmosphere, react at 90°C, reflux, when no more gas is produced, add a certain amount of dilute sulfuric ac...

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Abstract

The invention relates to a super-low-shrinkage water-repellent polyester industrial yarn and a preparation method thereof. The super-low-shrinkage water-repellent polyester industrial yarn is prepared by modified polyester spinning. By the use of the characteristic that at a certain temperature, the increasing amplitude of the free volume of an aminoadipic acid gylcol ester is much larger than that of a polyester macromolecular chain, the interface bonding performance between an organic fluorine water-repellent and oil-repellent finishing agent and polyester fiber is improved; meanwhile, since an amino group is positioned at the initiating end of an aminoadipic acid gylcol ester molecule, the hydrogen-bond interaction between the aminoadipic acid gylcol ester molecule and the polyester macromolecular chain is increased, and the migration is reduced to the most extent. The damage to the regularity and the crystallinity of a polyester structure is avoided, and the excellent performance of the polyester is remained; the wicking height of the super-low-shrinkage water-repellent polyester industrial yarn is smaller than or equal to 0.8 mm. The super-low-shrinkage water-repellent polyester industrial yarn can be used for water-repellent and oil-repellent places needed by industrial textiles.

Description

technical field [0001] The invention belongs to the field of fiber technology, and relates to an ultra-low shrinkage water-repellent polyester industrial yarn and a preparation method thereof. Background technique [0002] Since its appearance, polyethylene terephthalate (PET) fiber has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fibers in the world. Polyester fiber has a series of excellent properties such as high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric has the advantages of wrinkle resistance and good stiffness, so , Polyester fiber is widely used in clothing, industrial yarn and other fields. [0003] With the improvement of people's living standards, people's requirements for textiles are getting higher and higher, and the functional finishing of tex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/53D06M13/292D06M13/236D06M15/657D01F6/92D01F1/10C08G63/183C07C229/08C07C227/18
Inventor 赵慧荣杨大矛范晓兵蔡明建宋光坤孙晓华
Owner JIANGSU HENGLI CHEM FIBER
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