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Method for preparing marine polyester cable

A polyester and cable technology, applied in the field of modified polyester fibers, can solve the problems of difficulty in further improving the breaking strength of marine polyester cables and poor treatment effect, and achieve the effects of improving the dipping effect, prolonging the service life and improving the breaking strength.

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

However, in the process of preparing marine cables, the prior art often requires post-treatment of polyester industrial yarns such as dipping treatment to prolong life and improve their mechanical properties. , 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 treatment effect of polyester fiber is poor, and the breaking strength of the prepared marine polyester cable is difficult to further improve

Method used

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  • Method for preparing marine polyester cable
  • Method for preparing marine polyester cable
  • Method for preparing marine polyester cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The preparation method of marine polyester cable, the steps are as follows:

[0071] (1) prepare modified polyester;

[0072] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0073] (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;

[0074] (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);

[0075] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0076] (1.2.1) Mg(NO 3...

Embodiment 2

[0099] The preparation method of marine polyester cable, the steps are as follows:

[0100] (1) prepare modified polyester;

[0101] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0102] (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;

[0103] (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);

[0104] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0105] (1.2.1) Ca(NO ...

Embodiment 3

[0122] The preparation method of marine polyester cable, the steps are as follows:

[0123] (1) prepare modified polyester;

[0124] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0125] (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;

[0126] (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);

[0127] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0128](1.2.1) ...

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Abstract

The invention relates to a marine polyester cable and a preparation method thereof. The marine polyester cable is prepared by the following steps: twisting modified polyester industrial yarns, and performing impregnation treatment on the woven rope, thereby obtaining the marine polyester cable. The modified polyester industrial yarns are prepared by performing solid phase polycondensation tackifying on modified polyester melt and performing spinning; the preparation method of the modified polyester before solid phase polycondensation tackifying comprises the following steps: uniformly mixing terephthalic acid, ethylene glycol, dihydric alcohol containing silicon on the main chain, 2,5,6,6-tetramethyl-2,5-heptandiol and metal oxide doped modified Sb2O3 powder, and sequentially carrying outan esterification reaction and a polycondensation reaction; the dihydric alcohol containing silicon on the main chain comprises dimethyl silicone diol, dimethyl diphenyl disiloxane diol or tetramethyldisiloxane diol; and the prepared marine polyester cable has the linear density of 1200+ / -3ktex and the breaking strength of more than or equal to 480kN. The method disclosed by the invention is simple in process, and the prepared marine polyester cable is high in breaking strength and high in quality.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to a marine polyester cable and a preparation method thereof. Background technique [0002] Polyester is the trade name for polyester fiber in my country. In the early stage of polyester fiber development, the varieties were mainly cotton-type, wool-type staple fibers, and ordinary filaments, which were mainly used in the fields of clothing and decoration. At present, the commonly used catalysts for polyester synthesis are antimony-based catalysts, and the common antimony-based catalysts on the market such as Sb 2 o 3 The amount added in the polyester synthesis process is large, and the large amount of antimony-based catalysts has a greater impact on the environment, which is not conducive to the environmental protection production of polyester. At the same time, the antimony-based catalysts will be converted into antimony in the polycondensation reaction. , so th...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/695C08G63/86D01D5/08D01D5/088D01D5/16D01D10/02
Inventor 邵义伟赵艳丽张元华
Owner JIANGSU HENGLI CHEM FIBER
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