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Novel insulating paint for electrical parts and preparation method thereof

A technology of electrical parts and insulating varnish, applied in the direction of coating, etc., can solve problems such as improper preparation of materials, poor three-proof ability, and low adhesion

Inactive Publication Date: 2014-02-19
KUNSHAN FENFA INSULATING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the insulating varnishes for electrical parts used in China usually use silicone resins, polyimide resins, polydiphenyl ether resins, etc. as film-forming base materials. Requirements, but due to improper preparation methods and defects in preparation materials, there are shortcomings such as low cohesion, poor adhesion, drying and drying, and poor performance in terms of three-proof ability

Method used

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  • Novel insulating paint for electrical parts and preparation method thereof

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preparation example Construction

[0017] figure 1 It is a process step chart of the preparation method of the new insulating varnish for electrical parts in the embodiment of the present invention; the insulating varnish contains the following components by weight: 66% epoxy modified silicone resin, 22% acrylic resin, 2.5% pigment, Mica powder filler 8%, additive 1.5%.

[0018] The new insulating varnish for electrical parts mentioned in the present invention adopts self-made epoxy-modified silicone resin as the main film-forming material, uses acrylic resin as auxiliary resin, and then adds high-temperature-resistant pigments, functional fillers, and auxiliary agents to obtain energy-efficient varnishes. Drying at room temperature, the mechanical properties, medium resistance and insulation properties are all better than the high temperature self-drying insulating varnish of conventional drying insulating varnish. Among them, the epoxy-modified silicone resin is formed by the reaction of epoxy resin, butyl a...

Embodiment

[0021] The specific preparation method is as follows:

[0022] a) Preparation of epoxy-modified silicone resin, the specific preparation process is: first put 39% phenylchlorosilane, 20% methylchlorosilane, 11% toluene, and 30% butanol into a certain amount of water for hydrolysis, washing with water, Concentrate, add an appropriate amount of acetone solvent to dilute into a silanol intermediate with a solid content of 62%; then add epoxy resin and an appropriate amount of butyl acetate solvent into a four-necked bottle, heat up, and start stirring after the epoxy resin is dissolved, and stir evenly Finally, add silanol intermediates in batches at 40°C, the ratio of epoxy resin to silanol intermediates is 50:50, and finally condense to a certain viscosity and content at 160-190°C to obtain epoxy resin Modified silicone resin.

[0023] b) Preparation of acrylic resin, the specific preparation process is: first dissolve 40% acrylamide completely with 33% butanol, and let it sta...

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Abstract

The invention discloses a novel insulating paint for electrical parts and a preparation method thereof. The insulating paint comprises the following components in percentage by weight: 66% of epoxy modified silicone resin, 22% of acrylic resin, 2.5% of pigment, 8% of mica powder packing, and 1.5% of additive. The preparation method comprises the following steps: a) preparing the epoxy modified silicone resin; b) preparing the acrylic resin; and c) preparing the insulating paint. The invention discloses a novel insulating paint for electrical parts and a preparation method thereof, the novel insulating paint can be naturally dried at normal temperature, is high-temperature-resistant, oil-resistant, and good in adhesive force, and has excellent electrical insulation properties and three-proofing properties, and the preparation method is simple, high in performance price ratio, and easily subjected to large-scale popularization and application.

Description

technical field [0001] The invention relates to an insulating varnish, in particular to a novel insulating varnish for electrical parts and a preparation method thereof, belonging to the technical field of insulating materials. Background technique [0002] Insulating varnish is an important insulating material based on high molecular polymer, which can be cured into an insulating film or an insulating whole under certain conditions. Insulating varnish is widely used, and its types mainly include: enameled wire insulating varnish, impregnated insulating varnish, covering insulating varnish, silicon steel sheet insulating varnish, adhesive insulating varnish, electrical parts insulating varnish, etc. With the development of science and technology and the improvement of people's living standards, the requirements for insulating paint for electrical parts are getting higher and higher. In addition to meeting the requirements of high temperature resistance, oil resistance, elect...

Claims

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Application Information

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IPC IPC(8): C09D183/10C09D133/26C09D7/12C09D5/25C08G77/42C08F220/56C08F220/14C08F220/18
Inventor 周巧芬
Owner KUNSHAN FENFA INSULATING MATERIALS
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