Water-repellent fabric and manufacturing method thereof

A fabric and polyester technology, applied in the field of fibers, can solve the problems of organic fluorine water- and oil-repellent finishing agents, such as difficulty in laminating, poor surface binding force of polyester fibers, and lack of high-polarity groups, etc., to improve the finishing effect and Washability, good compatibility, increase the effect of hydrogen bonding

Active Publication Date: 2015-04-22
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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Water-repellent fabric and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A method for preparing a water-repellent fabric, comprising the steps of:

[0072] (1) Preparation of amino fatty acid ethylene glycol ester:

[0073] 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;

[0074] 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 for 2 hours, then wash, purify and dry to obtai...

Embodiment 2

[0102] A method for preparing a water-repellent fabric, comprising the steps of:

[0103] (1) Preparation of amino fatty acid ethylene glycol ester:

[0104] 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;

[0105] 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 sulfuric acid to react for 3 hours, then was...

Embodiment 3

[0133] A method for preparing a water-repellent fabric, comprising the steps of:

[0134] (1) Preparation of amino fatty acid ethylene glycol ester:

[0135] 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;

[0136] 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 acid to react for 2.5 hours, then wash, purify ...

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Abstract

The invention relates to water-repellent fabric and a manufacturing method of the water-repellent fabric. The water-repellent fabric is formed by weaving polyester industrial yarn used for the water-repellent fabric, the polyester industrial yarn used for the water-repellant fabric is made of modified polyester, and the water-repellant fabric is formed by arranging after water repellency. The modified polyester is composed of polyester and amino fatty acid glycol ester dispersed among molecular chains of the polyester, a hydrogen-bond interaction is achieved between the amino fatty acid glycol ester and the molecular chains of the polyester, and therefore the relative positions of the amino fatty acid glycol ester and the molecular chains of the polyester are fixed. According to the water-repellent fabric, at the temperature of 70 DEG C-130 DEG C, the free volume space between the molecular chains inside fibers is enlarged by 10 v/v%-30 v/v%, the breaking strength of the polyester industrial yarn used for the water-repellant fabric is larger than or equal to 7.2 cN/dtex, and the elongation at break is 20.0+/-2.0%. The washable performance of the water-repellant fabric is good. The water-repellant fabric can be used for industries such as tents and drapes.

Description

technical field [0001] The invention belongs to the field of fiber technology, and relates to a water-repellent fabric 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 textiles, such as antibacterial, flame reta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/78D06M15/00D06M101/32
Inventor 赵慧荣杨大矛范晓兵蔡明建宋光坤张元华
Owner JIANGSU HENGLI CHEM FIBER
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