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Self-lubricating polyamidoimide enamelled wire paint and preparation method thereof

A polyamide-imide and enameled wire enamel technology, applied in the coating and other directions, can solve the problems of the insulation layer being susceptible to mechanical damage, the performance of the enameled wire, and the insulation performance of the enameled wire, etc., to improve the winding performance and winding performance, lubrication Good effect, the effect of improving production efficiency

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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  • Self-lubricating polyamidoimide enamelled wire paint and preparation method thereof

Examples

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Effect test

Embodiment 1

[0016] The preparation method of the self-lubricating polyamide-imide wire enamel of the present embodiment may further comprise the steps:

[0017] (1) The preparation method of polyamide-imide resin: take 10 parts of dimethylacetamide, 2 parts of 4,4'-diaminodiphenyl ether, and 2 parts of pyromellitic dianhydride, and add dimethyl Acetamide, 4,4'-diaminodiphenyl ether, after dissolving, add pyromellitic dianhydride in 8 batches, stir and react until transparent;

[0018] (2) Preparation method of wax slurry: Take 10 parts of palm wax and 90 parts of xylene according to the weight ratio, add xylene and wax under stirring, gradually raise the temperature from room temperature to 120 ° C over 5 hours, keep it warm for 2 hours, and cool to room temperature;

[0019] (3) Preparation method of wire enamel: Take 100 parts of the above polyamide-imide resin and 10 parts of wax slurry, stir and mix evenly, heat to 180°C, keep it warm for 20 hours, and then cool to room temperature t...

Embodiment 2

[0021] The preparation method of the self-lubricating polyamide-imide wire enamel of the present embodiment may further comprise the steps:

[0022] (1) The preparation method of polyamide-imide resin: take 10 parts of dimethylacetamide, 2 parts of 4,4'-diaminodiphenyl ether, and 2 parts of pyromellitic dianhydride, and add dimethyl Acetamide, 4,4'-diaminodiphenyl ether, after dissolving, add pyromellitic dianhydride in 8 batches, stir and react until transparent;

[0023] (2) Preparation method of wax slurry: Take 20 parts of oxidized polyethylene wax and 80 parts of xylene according to the weight ratio, add xylene and wax under stirring, gradually raise the temperature from room temperature to 120 ° C over 4 hours, and keep it warm for 3 hours , cooled to room temperature;

[0024] (3) Preparation method of wire enamel: Take 100 parts of the above polyamide-imide resin and 10 parts of wax slurry, stir and mix evenly, heat to 160°C, keep it warm for 20 hours, and then cool t...

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Abstract

The invention relates to a self-lubricating polyamidoimide enamelled wire paint preparation method, which comprises the following steps: 1)preparation method of polyamidoimide resin: employing dimethyl acetamide, 4,4'-diaminodiphenyl ether, dissolving and then adding pyromellitic dianhydride by eight batches, stirring and reacting until the color is transparent; 2)preparation method of wax slurry: adding xylene and wax under stirring, gradually heating from room temperature to 100-120 DEG C in 3-5 hours, insulating for 2-3 hours, cooling to room temperature; and 3)preparation method of the enamelled wire paint: taking polyamidoimide resin and wax slurry, stirring and uniformly mixing, heating to 160-180 DEG C, insulating for 10-20 hours, and cooling to room temperature to obtain the self-lubricating polyamidoimide enamelled wire. According to the invention, wax slurry with good lubricity is introduced in the polyamidoimide enamelled wire, maximum static friction coefficient of the enamelled wire is reduced, and the maximum static friction coefficient of the enamelled wire is about 0.060.

Description

technical field [0001] The invention relates to the preparation of wire enamel, in particular to a self-lubricating 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 M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D7/12C08G73/10
CPCC09D179/08C08G73/1007C09D7/65
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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