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Polyester industrial yarn for safety belt and preparation method of polyester industrial yarn

A polyester industrial yarn and seat belt technology, which is used in rayon manufacturing, drawing spinning, filament/thread forming, etc., can solve the problems of poor bonding effect and poor wear resistance of automobile seat belts, and achieve wear resistance And the effect of increasing tensile strength, increasing free volume of voids, and improving weaving efficiency

Active Publication Date: 2019-05-10
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when using polyester industrial yarns to prepare automobile safety belts, in order to further enhance the wear resistance and tensile strength of automobile safety belts, it is often necessary to post-treat polyester industrial yarns with a sizing solution containing polyacrylamide. Crystalline supramolecular structure, the molecular chains of the crystalline part are parallel to each other, and most of them are in the trans conformation, while the amorphous region is mostly in the cis conformation, the molecular arrangement is quite tight, and the structure of the polyester molecule itself is relatively regular. The bonding effect of industrial yarn is poor, and the wear resistance of the prepared car seat belt is poor

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 safety belt and preparation method of polyester industrial yarn
  • Polyester industrial yarn for safety belt and preparation method of polyester industrial yarn
  • Polyester industrial yarn for safety belt and preparation method of polyester industrial yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The preparation method of the polyester industrial yarn for safety belt, the steps are as follows:

[0061] (1) prepare modified polyester;

[0062] (1.1) Preparation of 2,5,6,6-tetramethyl-2,5-heptanediol;

[0063] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1:1:1.2:2.0, and place in an ice bath Under the conditions of reaction for 2h, cooling crystallization, centrifugation, washing, refining and drying are carried out after the reaction to obtain octyne diol;

[0064] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 2:10:0.01, react at a temperature of 40°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction 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) Preparation of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol;

[0066] After...

Embodiment 2

[0086] The preparation method of the polyester industrial yarn for safety belt, the steps are as follows:

[0087] (1) prepare modified polyester;

[0088] (1.1) Preparation of 2,5,6,6-tetramethyl-2,5-heptanediol;

[0089] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1.1:1:1.2:2.3, and place in an ice bath Under the conditions of reaction for 2h, cooling crystallization, centrifugation, washing, refining and drying are carried out after the reaction to obtain octyne diol;

[0090] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 2:10:0.01, react at a temperature of 45°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction 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);

[0091] (1.2) Preparation of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol;

[0092] Aft...

Embodiment 3

[0106] The preparation method of the polyester industrial yarn for safety belt, the steps are as follows:

[0107] (1) prepare modified polyester;

[0108] (1.1) Preparation of 2,5,6,6-tetramethyl-2,5-heptanediol;

[0109] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1.2:1:1.25:2.0, and place in an ice bath Under the conditions of reaction for 3 hours, after the reaction is completed, cooling and crystallization, centrifugation, washing, refining and drying are carried out to obtain octyne diol;

[0110] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 3:10:0.03, react at 40°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction 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);

[0111] (1.2) Preparation of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol;

[0112...

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Abstract

The invention relates to a polyester industrial yarn for a safety belt and a preparation method of the polyester industrial yarn. The preparation method comprises the steps of carrying out solid-phasecondensation polymerization tackifying, melting, metering, extrusion, cooling, oiling, stretching, heat shaping and winding on a modified polyester melt, so as to obtain the polyester industrial yarnfor the safety belt. A preparation method of modified polyester before solid-phase condensation polymerization tackifying comprises the steps of uniformly mixing terephthalic acid, glycol, 2,5,6,6-tetramethyl-2,5-heptanediol and 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, and sequentially carrying out esterification reaction and condensation polymerization reaction. After the safety belt prepared fromthe polyester industrial yarn is tested according to the GB14166-93 standard, the tensile strength value of the worn safety belt is higher than 80% of the tensile strength value of the safety belt before wearing. The method is simple in process, and the wear resistance of the safety belt prepared from the polyester industrial yarn is good.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to a polyester industrial yarn used for safety belts and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a polymer with excellent properties. PET is widely used in fibers, In fields such as bottle packaging, film and sheet, the output is increasing year by year, and the industry status has been significantly improved. [0003] As one of the important raw materials for industrial textiles, polyester industrial yarn has excellent characteristics such as high strength, high modulus, stable size, wear resistance, aging resistance, chemical corrosion resistance, good fatigue resistance, and good processing performance. Automotive fibers, geosynthetics, filter materials and other fields have also been widely used. [0004] In recent years, with the strong development of the automobile industry and the increasing awareness o...

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): D01F6/92D01F1/10C08G63/183C08G63/86D01D5/088D01D5/16D01D10/02D03D1/00D03D15/10D06B3/04D03D15/58
Inventor 王丽丽王小雨赵慧荣
Owner JIANGSU HENGLI CHEM FIBER
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