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Rebound elasticity being improved polyether ester elastic fiber

A technology of elastic fiber and thermoplastic polyether ester, which is applied in the field of polyether ester elastic fiber, can solve the problems of product performance degradation, poor heat resistance of polyether soft segment, etc.

Inactive Publication Date: 2004-03-10
上海中纺物产发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor heat resistance of the polyether soft segment, short-term high temperature can also lead to a significant decline in product performance, so corresponding measures must be taken to improve high temperature thermal stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] 1149.1 parts of polytetrahydrofuran ether glycol with a molecular weight of 2000 and 492.5 parts of polyethylene glycol with a molecular weight of 2000 were added to a 10L polymerization kettle, and the rest were the same as in Comparative Example 1.

Embodiment 2

[0074] Add 1149.1 parts of polytetrahydrofuran ether glycol with a molecular weight of 2000, 492.5 parts of ethylene oxide-terminated propylene oxide-ethylene oxide copolyether with a molecular weight of 2000, and the rest are the same as in Comparative Example 1.

Embodiment 3

[0076] Add 1149.1 parts of polytetrahydrofuran ether diols with a molecular weight of 2000, 246.2 parts of polyethylene glycol with a molecular weight of 2000, 246.2 parts of ethylene oxide-terminated propylene oxide-ethylene oxide copolyether with a molecular weight of 2000, and all the other are the same as Comparative Example 1.

[0077] The elastic recovery rate of the fibers is shown in Table 2.

[0078] Comparative example 1

[0079] It can be seen from Table 2 that the elastic recovery rate of fibers can be effectively improved by using various polyether glycols for copolymerization.

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PUM

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Abstract

An elastic polyether ester fibre with improved resiliency is prepared from binary carboxylic acid, and two or more kinds of polyalkyleneether diol, whose number average molecular weight of 1000-4000, and mixing with composite deoxidizing agent (0.05-2%). Its advantages are high toughness and strength, and high resistance to fatigue, wearning, oil and chlorine.

Description

technical field [0001] The invention relates to a polyether ester elastic fiber, in particular to a polyether ester elastic fiber with improved resilience Background technique [0002] Linear thermoplastic polyether ester elastomer is obtained by copolymerization of dibasic carboxylic acid, glycol and polyalkylene ether glycol. Its hardness ranges from 30-75D, which well fills the gap between plastic and rubber. As an engineering-grade elastomer, it has excellent physical and mechanical properties, such as toughness, fatigue resistance, high strength, wear resistance, oil resistance and chlorine resistance, so its usage has been increasing in recent years. [0003] Attempts to use polyetheresters for the production of elastic fibers have been attempted for a long time, but were unsuccessful due to too large a permanent set. There are two reasons: one is that the average degree of polymerization of the polyester hard segment is small, and the crystallization is not perfect, ...

Claims

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Application Information

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IPC IPC(8): D01F6/86
Inventor 李泽阳刘森林沈贵宏卢林放时寅
Owner 上海中纺物产发展有限公司
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