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A kind of corrosion-resistant wear-resistant insulating paint and preparation method thereof

A wear-resistant and insulating varnish technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problem of single performance and achieve the effect of high insulation performance level, good insulation performance, excellent corrosion resistance and wear resistance

Inactive Publication Date: 2017-01-25
深圳市富贵花实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Insulating varnish is mainly used to impregnate coils and other insulating parts of motors and electrical appliances to fill their gaps and micropores. After drying, insulating varnish can solidify the impregnated object into a dense whole, thereby improving its breakdown strength , mechanical properties, moisture resistance, heat resistance, thermal conductivity and oxidation resistance; due to the different environments in which motors and appliances are used, the performance requirements for insulating varnish are also different. Higher requirements are also put forward, but the insulating varnishes currently on the market are generally single-performance paints, and insulating varnishes with better corrosion resistance, wear resistance and insulation performance are urgently needed to be developed.

Method used

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  • A kind of corrosion-resistant wear-resistant insulating paint and preparation method thereof

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preparation example Construction

[0028] The invention also includes a preparation method of corrosion-resistant and wear-resistant insulating paint, which includes the following steps:

[0029] ①Add formaldehyde to xylene, add mixed acid dropwise to it, control the temperature during the dropping to 30~40℃, reflux for 5~7 hours after the dropwise addition, and let it stand to obtain a mixed solution, which is then separated into layers , The upper layer is xylene formaldehyde resin, the lower layer is water, and the water in the lower layer is removed to obtain xylene formaldehyde resin; the mass ratio of formaldehyde, xylene and mixed acid is 1~2:3~4:1; said mixed acid It is obtained by mixing sulfuric acid and acetic acid in a molar ratio of 1:1;

[0030] ②Add phenol to the xylene formaldehyde resin obtained in step ①, increase the temperature to 80~90℃ and keep it for 1~2 hours to obtain the reaction liquid, cool the reaction liquid to 20~30℃, add sodium hydroxide to adjust the pH of the reaction liquid After ...

Embodiment 1

[0044] A corrosion-resistant and wear-resistant insulating varnish, in parts by weight, consisting of: 20 parts of xylene modified phenolic resin, 30 parts of lauric acid modified alkyd resin, 25 parts of phenyltrimethylsilane, and o-benzene 5 parts of diformate, 2 parts of kaolin, 4 parts of mica powder, 5 parts of illite powder, 30 parts of isophorone diisocyanate, 1 part of dibutyltin dilaurate, 4 parts of dioctyl terephthalate, coconut oil 1 part of amidopropyl betaine and 10 parts of tert-butyl methacrylate.

[0045] The preparation method includes the following steps:

[0046] ① Add formaldehyde to xylene, add mixed acid dropwise to it, control the temperature during the dropping to 30℃, reflux for 5 hours after the dropwise addition, and let it stand to obtain a mixed solution. The mixed solution is allowed to stand for stratification. The upper layer is two Toluene formaldehyde resin, the lower layer is water, and the lower layer is removed to obtain xylene formaldehyde re...

Embodiment 2

[0053] A corrosion-resistant and wear-resistant insulating paint, based on parts by weight, composed of the following components: 30 parts of xylene modified phenolic resin, 40 parts of lauric acid modified alkyd resin, 40 parts of phenyltrimethylsilane, o-benzene 20 parts of diformate, 5 parts of kaolin, 10 parts of mica powder, 8 parts of illite powder, 40 parts of isophorone diisocyanate, 3 parts of dibutyl tin dilaurate, 8 parts of dioctyl terephthalate, coconut oil 3 parts of amidopropyl betaine and 15 parts of tert-butyl methacrylate.

[0054] The preparation method includes the following steps:

[0055] ① Add formaldehyde to xylene, add mixed acid dropwise to it, control the temperature during the dropping to 40°C, reflux for 7 hours after the dropping, and let stand to obtain a mixed solution. The mixed solution is allowed to stand for stratification. The upper layer is two Toluene formaldehyde resin, the lower layer is water, and the lower layer of water is removed to obt...

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Abstract

The invention discloses corrosion and wear resistant insulating varnish. The insulating varnish mainly comprises the following components: xylene modified phenolic resin, lauric acid modified alkyd resin, phenyltrimethylsilane, phthalate, kaolin, isophorone diisocyanate, dibutyltin dilaurate and tert-butyl methacrylate. The corrosion and wear resistant insulating varnish has the advantages that the corrosion and wear resistant insulating varnish is an H-level insulating material and has good insulating properties; the insulating varnish also has excellent corrosion and wear resistance; the breakdown strength of a film is higher than 100kV / mm and the volume resistivity is 1018ohm.cm; the film is continuously heated for 200 hours in a range of 250+ / -2 DEG C; the breakdown strength of the film is about 55kV / mm and the volume resistivity (in heat state) is 1015ohm.cm; the film shows better properties in acid-base resistance experiments (48h) and does not wrinkle, fall off or fade; wear resistance experiments show that the insulating varnish has good wear resistance.

Description

Technical field [0001] The invention relates to the technical field of coatings, in particular to a corrosion-resistant and wear-resistant insulating paint and a preparation method thereof. Background technique [0002] Insulating paint, as a special paint in paint, is an important insulating material based on high molecular polymers that can be cured into an insulating film or insulation under certain conditions. It is mainly composed of film-forming materials and auxiliary materials. The film-forming materials are mainly It is resin, asphalt, drying oil, etc. The auxiliary material does not participate in the film formation, and the main function is to adjust the viscosity and dissolve the film forming substance. [0003] Insulating varnish is mainly used to impregnate the coils and other insulating parts of motors and electrical appliances to fill the gaps and micropores. After drying, the insulating varnish can solidify the impregnated material into a dense whole, thereby impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D4/06C09D5/25C09D5/08C09D7/12
Inventor 张娟杨彪朱滨
Owner 深圳市富贵花实业有限公司
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