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Polyester industrial yarn for automobile air bags and preparation method of polyester industrial yarn

A technology of polyester industrial yarn and airbag, applied in the field of polyester fiber, can solve the problems of poor wear resistance of automobile airbags, and achieve the effect of increasing the free volume of voids, reducing the free volume and improving the wear resistance.

Active Publication Date: 2019-05-14
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 defects of the poor wear resistance of automobile airbags prepared by polyester yarns in the prior art, and provide a polyester industrial yarn that can be used to prepare automobile airbags with good wear resistance and a preparation method thereof

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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  • Polyester industrial yarn for automobile air bags and preparation method of polyester industrial yarn
  • Polyester industrial yarn for automobile air bags and preparation method of polyester industrial yarn
  • Polyester industrial yarn for automobile air bags and preparation method of polyester industrial yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of preparation method of the polyester industrial yarn that is used for automobile air bag, concrete steps are as follows:

[0061] (1) prepare modified polyester;

[0062] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0063] (1.1.1) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether in a molar ratio of 1:1:1.2:2.0, Reacting for 2 hours under ice bath conditions, cooling and crystallization, centrifugation, washing, refining and drying after the reaction to obtain octynediol;

[0064] (1.1.2) Octynediol, ethanol and palladium catalyst are mixed by the weight ratio of 2:10:0.01, react 50min under the temperature condition of 40 ℃, continuously feed hydrogen in the reaction process, carry out separation and Purified to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I) ;

[0065] (1.2) Esterification reaction;

...

Embodiment 2

[0090] A kind of preparation method of the polyester industrial yarn that is used for automobile air bag, concrete steps are as follows:

[0091] (1) prepare modified polyester;

[0092] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0093] (1.1.1) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether in a molar ratio of 1.1:1:1.2:2.3, Reacting for 2 hours under ice bath conditions, cooling and crystallization, centrifugation, washing, refining and drying after the reaction to obtain octynediol;

[0094] (1.1.2) Octynediol, ethanol and palladium catalyst are mixed by the weight ratio of 2:10:0.01, react 50min under the temperature condition of 45 ℃, continuously pass into hydrogen in the reaction process, carry out separation and Purified to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I) ;

[0095] (1.2) Preparation of 3-tri...

Embodiment 3

[0110] A kind of preparation method of the polyester industrial yarn that is used for automobile air bag, concrete steps are as follows:

[0111] (1) prepare modified polyester;

[0112] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0113] (1.1.1) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether in a molar ratio of 1.2:1:1.25:2.0, React for 3 hours under ice-bath conditions. After the reaction, carry out cooling crystallization, centrifugation, washing, refining and drying to obtain octyne diol;

[0114] (1.1.2) Octynediol, ethanol and palladium catalyst are mixed by the weight ratio of 3:10:0.03, react 50min under the temperature condition of 40 ℃, continuously pass into hydrogen during the reaction process, carry out separation and Purified to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I) ;

[0115] (1.2) Preparatio...

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Abstract

The invention relates to polyester industrial yarn for automobile air bags and a preparation method of the polyester industrial yarn. The preparation method includes the step: the polyester industrialyarn for the automobile air bags is obtained after a modified polyester melt is subjected to solid phase condensation polymerization viscosification and a spinning technology. A preparation method ofmodified polyester before solid phase condensation polymerization viscosification includes the steps: terephthalic acid, ethylene glycol, diol with trimethylsilyl side groups, and 2,5,6,6-tetramethyl-2,5-heptanediol are mixed evenly and then subjected to an esterification reaction and a polycondensation reaction successively. The service life of the air bags made from the polyester industrial yarn is 8-12 years. The preparation method of the polyester industrial yarn is simple and low in cost, the polyester is modified by introducing the 2,5,6,6-tetramethyl-2,5-heptanediol and the diol with the trimethylsilyl side groups, by cooperating with a subsequent sizing process, wear resistance of the automobile air bags made of the industrial yarn is significantly improved, and the service life of the automobile air bags made from the industrial yarn is significantly prolonged; and manufactured products have excellent weaving and wear resistance, and good application prospects.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a polyester industrial yarn used for automobile airbags and a preparation method thereof. Background technique [0002] The chemical composition of polyester industrial yarn is the same as that of ordinary polyester. Due to the characteristics of large molecular weight and narrow molecular weight distribution of its raw materials, polyester industrial yarn has high breaking strength, large modulus, small elongation, good heat resistance and impact resistance. And good fatigue resistance, etc., is a good material for rubber skeleton and many industrial textiles. [0003] With the development of highways in our country and the improvement of automobile performance, the safety of automobiles has become particularly important. Car safety equipment is divided into two types: active safety equipment and passive safety equipment. Active safety refers to the ability of a car to p...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84C08G63/695
Inventor 王山水王丽丽陈瑞
Owner JIANGSU HENGLI CHEM FIBER
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