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Polyamidoimide enamelled wire paint and preparation method thereof

A technology of polyamide-imide and polyamide-imide resin, applied in coatings, fireproof coatings, etc., can solve the problems of enameled wire insulation performance degradation, enameled wire performance degradation, insulation layer is susceptible to mechanical damage, etc., and achieve lubrication effect Good, no compatibility issues, increased rigidity

Inactive Publication Date: 2015-03-25
DANYANG STAR CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the friction and impact of the enameled wire during winding, the insulation layer of the enameled wire is easily damaged by mechanical damage, resulting in a decrease in the insulation performance of the enameled wire. Therefore, higher requirements are put forward for the lubricity and smoothness of the surface of the enameled wire. Good winding performance and winding performance
At present, the maximum static friction coefficient of the enameled wire coated with ordinary polyamide-imide enameled wire enamel is above 0.120. The higher the friction coefficient, the easier it is to cause the performance of the enameled wire to decline. sex

Method used

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  • Polyamidoimide enamelled wire paint and preparation method thereof

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Effect test

Embodiment 1

[0013] The preparation method of the polyamide-imide wire enamelled varnish of the present embodiment, comprises the steps:

[0014] (1) Preparation method of polyamide-imide resin: Take 10 parts of dimethylacetamide, 0.9 parts of 4,4'-diaminodiphenyl ether, 4,4'-(hexafluoroisopropylidene)diphenylamine 0.1 part, 0.9 part of pyromellitic dianhydride, 0.1 part of 4,4'-(hexafluoroisopropylene) diphthalic anhydride, add dimethylacetamide under stirring, 4,4'-diaminodiphenyl ether and 4, 4'-(hexafluoroisopropylene) diphenylamine, after dissolved, add pyromellitic dianhydride and 4,4'-(hexafluoroisopropylene) diphthalic anhydride, slowly raise the temperature to 100°C, stir the reaction to transparent;

[0015] (2) Preparation method of wire enamel: Take 20 parts of the above-mentioned polyamide-imide resin and 5 parts of xylene, and stir evenly to prepare self-lubricating limited imide wire enamel.

Embodiment 2

[0017] The preparation method of the polyamide-imide wire enamelled varnish of the present embodiment, comprises the steps:

[0018] 1) Preparation method of polyamide-imide resin: Take 10 parts of dimethylacetamide, 0.7 parts of 4,4'-diaminodiphenyl ether, 0.3 parts of 4,4'-(hexafluoroisopropylidene) diphenylamine Parts, 0.7 parts of pyromellitic dianhydride, 0.3 parts of 4,4'-(hexafluoroisopropylene) diphthalic anhydride, adding dimethylacetamide under stirring, 4,4'-diaminodiphenyl ether and 4 , 4'-(hexafluoroisopropylidene)diphenylamine, after dissolving, add pyromellitic dianhydride and 4,4'-(hexafluoroisopropylene)diphthalic anhydride, slowly raise the temperature to 100°C, and stir the reaction until transparent;

[0019] (2) Preparation method of wire enamel: Take 20 parts of the above-mentioned polyamide-imide resin and 3 parts of xylene, and stir evenly to prepare self-lubricating limited imide wire enamel.

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Abstract

The invention relates to a polyamidoimide enamelled wire paint preparation method, which comprises the following steps: 1)preparation method of polyamidoimide resin: employing dimethyl acetamide, 4,4'-diaminodiphenyl ether, 4,4'-(hexafluoroisopropylidene)diphenylamine, pyromellitic dianhydride, 4,4'-(hexafluoroisopropylidene)diphthalic anhydride for resin synthesis, adding dimethyl acetamide, 4,4'-diaminodiphenyl ether and 4,4'-(hexafluoroisopropylidene)diphenylamine while stirring, adding pyromellitic dianhydride and 4,4'-(hexafluoroisopropylidene)diphthalic anhydride after dissolving, slowly heating to 100 DEG C, stirring for reacting until color is transparent; and 2)preparation method of the enamelled wire paint: taking polyamidoimide resin and xylene, uniformly stirring to obtain the self-lubricating polyamidoimide enamelled wire paint. According to the invention, a fluorine-containing group is introduced in the polyamidoimide enamelled wire, maximum static friction coefficient of the enamelled wire is reduced, lubrication effect of the produced enamelled wire is good, and the maximum static friction coefficient is about 0.040.

Description

technical field [0001] The invention relates to the preparation of wire enamel, in particular to a polyamide-imide wire enamel and a preparation method thereof. Background technique [0002] Enameled wire enamel is an indispensable electrical insulation coating applied to electrical equipment, and is one of the key raw materials for controlling the economic and technical indicators and operating life of electrical equipment. With the development of the times and the economy, higher requirements have been put forward for the temperature resistance level of enameled wire in the fields of military and people's livelihood. [0003] Polyamide-imide varnish is the main raw material for general-purpose high-performance composite coating enamelled round and flat wires. It is a C-class high-temperature-resistant enameled wire varnish with excellent comprehensive performance. It is widely used in traction motors and sealed motors, especially for freezing resistance Manufacture of com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D5/25C08G73/14
CPCC09D179/08C08G73/14C08L2201/08C09D5/18
Inventor 张建清张斌张国生李岩杨胜杰张杏荣钱新华姚扎西张芬萍张衡伟
Owner DANYANG STAR CHEM
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