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Nylon 66 modified fiber

A modification and fiber technology, applied in the direction of single-component copolyamide rayon, etc., can solve the problems of material damage, inability to make spinning-grade fibers, unsuitable and other problems

Active Publication Date: 2022-04-29
TAIWAN TEXTILE RESEARCH INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current modified nylon 66 has poor fluidity and cannot be made into spinning-grade fibers and can only be used as a material for reprocessing in the injection process. Therefore, it is usually only used in automobiles or electronic parts, and is not suitable for fabrics. Material
[0003] In addition, since the heat resistance and wear resistance of the existing modified nylon 66 are still insufficient, if it is used in a high-temperature and high-wear environment, it is easy to cause damage to the material, so the modified nylon 66 has Materials with high heat resistance, high wear resistance and fiberization are one of the topics that need to be studied urgently in the industry.

Method used

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  • Nylon 66 modified fiber
  • Nylon 66 modified fiber
  • Nylon 66 modified fiber

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0069] First, put adipic acid and hexamethylenediamine into the reaction tank, set the temperature to 200°C, and the pressure to 3kg / cm 2 , to carry out the polymerization reaction to form nylon 66.

[0070] Afterwards, raise the temperature to 260° C. and set the torque to 10 kW, then add terephthalic acid and 1,4-cyclohexanedioic acid to polymerize with nylon 66 to produce modified nylon 66.

[0071] Then, the reaction tank was depressurized, and then 36 carbonic acid was added to the reaction tank. Next, raise the temperature to 310° C., and evacuate to about 500 torr, and then polymerize the 36 carbonic acid and the modified nylon 66. Finally, the modified nylon 66 is pelletized to form modified nylon 66 fibers.

[0072] In Experimental Example 1, based on the total weight of the modified nylon 66 fiber, the content of the repeating unit (first repeating unit) derived from adipic acid and hexamethylenediamine is 89% by weight, and the repeating unit derived from 36 carbo...

experiment example 2

[0074] The difference between Experimental Example 2 and Experimental Example 1 lies in the contents of nylon 66, 1,4-cyclohexanedioic acid, terephthalic acid and 36-carbon diacid. In Experimental Example 2, based on the total weight of the modified nylon 66 fiber, the content of the repeating unit (first repeating unit) derived from adipic acid and hexamethylenediamine is 88.5% by weight, and the repeating unit derived from 36 carbon diacid The content of (the second repeating unit) is 1% by weight, the content of the repeating unit derived from terephthalic acid (the third repeating unit) is 10% by weight, the repeating unit derived from 1,4-cyclohexanedioic acid (the third repeating unit) The content of four repeating units) is 0.5% by weight.

experiment example 3

[0076] The difference between Experimental Example 3 and Experimental Example 1 lies in the contents of nylon 66, 1,4-cyclohexanedioic acid, terephthalic acid and 36-carbon diacid. In Experimental Example 3, based on the total weight of the modified nylon 66 fiber, the content of the repeating unit (first repeating unit) derived from adipic acid and hexamethylenediamine is 78.5% by weight, and the repeating unit derived from 36 carbon diacid The content of (the second repeating unit) is 0.5% by weight, the content of the repeating unit derived from terephthalic acid (the third repeating unit) is 20% by weight, the repeating unit derived from 1,4-cyclohexanedioic acid (the third repeating unit) The content of four repeating units) is 1% by weight.

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Abstract

A modified nylon 66 fiber, which includes a first repeating unit derived from adipic acid and hexamethylenediamine, a second repeating unit derived from a diacid or diamine with a long carbon chain, and a diacid derived from an aromatic ring or a third repeating unit of a diamine, a fourth repeating unit derived from a cyclic diacid or a cyclic diamine. The second repeat unit has 6 to 36 carbon atoms. The third repeat unit has 8 to 14 carbon atoms. The fourth repeat unit has 6 to 10 carbon atoms. Based on the total weight of the modified nylon 66 fiber, the content of the first repeating unit is between 78 wt% and 94.8 wt%, the content of the second repeating unit is between 0.1 wt% and 1 wt%, and the third repeating unit The content of the unit is between 5% and 20% by weight, and the content of the fourth repeating unit is between 0.1% and 1% by weight.

Description

technical field [0001] The invention relates to a nylon 66 modified fiber, in particular to a nylon 66 modified fiber with high heat resistance, high abrasion resistance and low fiber fineness. Background technique [0002] Fibers with high heat resistance and high wear resistance can be widely used in various purposes, such as fire suits, heat insulating gloves, fire blankets and other fabrics. Because nylon 66 can be modified to improve heat resistance and wear resistance, nylon 66 is considered to have the potential to be used as a raw material for heat-resistant and wear-resistant fabrics. However, the current modified nylon 66 has poor fluidity and cannot be made into spinning-grade fibers and can only be used as a material for reprocessing in the injection process. Therefore, it is usually only used in automobiles or electronic parts, and is not suitable for fabrics. Material. [0003] In addition, since the heat resistance and wear resistance of the existing modifie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/80C08G69/26C08G69/28
CPCC08G69/265D01F6/80
Inventor 卢子中陈锦文林炜翔刘昭晖黄柏勛赖伟仁
Owner TAIWAN TEXTILE RESEARCH INSTITUTE