Epoxy impregnating varnish and preparation method thereof

A dipping varnish and epoxy technology, applied in the direction of epoxy resin coating, coating, etc., can solve the problems of insufficient temperature resistance and toughness, achieve high mechanical strength, good electrical insulation performance, and improve thermal conductivity.

Inactive Publication Date: 2014-02-05
安徽文峰电子科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature resistance grade and toughness of the cured product of this system are insufficient, so it is necessary to modify the epoxy anhydride impregnatio

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0011] An epoxy impregnating paint made from the following raw materials (kg) by weight:

[0012] Epoxy resin (E-51) 35, 2-amino-2-methyl-1-propanol 7, morpholine 2, polyisobutylene 6, m-xylylenediamine 3, maleic anhydride 8, p-benzoquinone 2. Methyl trichlorosilane 5, acrylonitrile 3, fatty alcohol polyoxyethylene ether phosphate 2, vinyl tris (β-methoxyethoxy) silane 5, methyl ethyl ketone peroxide 2, xylene 35, film formation 剂5.

[0013] The film-forming agent is made of the following raw materials in parts by weight: phenyl triethoxy silane 2, aniline methyl triethoxy silane 2, ferrocene 2, aluminum nitride 1, nano attapulgite 2, Epoxidized soybean oil 5, morpholine 1, polyisobutylene 4;

[0014] The preparation method is: mixing the materials, heating to 105-110°C, stirring and reacting for 2-3 hours, and grinding to remove the residue.

[0015] The preparation method of epoxy dipping paint includes the following steps: mixing morpholine, polyisobutylene, maleic anhydride, p-be...

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PUM

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Abstract

The invention relates to an epoxy impregnating varnish and a preparation method thereof. The epoxy impregnating varnish is characterized by being prepared from the following raw materials in parts by weight: 32-35 parts of epoxide resin (E-51), 5-7 parts of 2-amido-2-methyl-1-propyl alcohol, 1-2 parts of morpholine, 4-6 parts of polyisobutylene, 2-3 parts of m-xylylenediamine, 6-8 parts of maleic anhydride, 1-2 parts of para-benzoquinone, 3-5 parts of methyl trichlorosilane, 2-3 parts of acrylonitrile, 1-2 parts of fatty alcohol-polyoxyethylene ether phosphate, 3-5 parts of vinyl tri(beta- methoxyl oxethyl) silane, 1-2 parts of methyl ethyl ketone peroxide, 32-35 parts of dimethylbenzene and 4-5 parts of film-forming agents. The epoxy impregnating varnish disclosed by the invention has the advantages of high temperature and high humidity resistance, good electrical insulation property and high mechanical strength, improves the heat conduction, can work at 200 DEG C for a long time and work at 220 DEG C for a short time and meets the requirements of design.

Description

technical field [0001] The invention belongs to the field of insulating materials, and relates to an impregnating varnish, in particular to an epoxy impregnating varnish and a preparation method thereof. Background technique [0002] Pressure impregnation is generally used in the production of motors, transformers, and wires. The workpiece is pre-baked to remove moisture and then cooled, placed in a vacuum environment to remove internal air and volatiles, relying on the gravity of the paint liquid in the vacuum and applying a certain pressure to make the paint liquid quickly penetrate and fill the inner layer of the insulating structure. This process produces a continuous, dense, pinhole-free paint film. [0003] The existing impregnating paint is made of epoxy resin as the main resin and acid anhydride as the curing agent. However, the temperature resistance grade and toughness of the cured product of this system are insufficient, and the epoxy anhydride impregnation pain...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D123/20C09D7/12C09D5/25
Inventor 徐文利
Owner 安徽文峰电子科技集团有限公司
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