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A kind of film-coating coating for capacitor aluminum shell and its production and coating method

A capacitor and film coating technology, used in polyester coatings, epoxy resin coatings, coatings, etc., can solve the problems of high insulation performance and heat resistance that cannot meet the requirements, low production efficiency, and high production costs, and achieve good resistance. The effect of softening ability, good breakdown resistance and simple operation

Active Publication Date: 2019-03-22
江门市德佑金属材料实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, this method only reduces the secondary pollution of chlorine-containing coatings, but there are still problems such as poor temperature resistance and high production costs.
Although the above capacitor protection has certain practical performance, the production efficiency is low. For high-demand application fields, high insulation performance and heat resistance performance often cannot meet the requirements.

Method used

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  • A kind of film-coating coating for capacitor aluminum shell and its production and coating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Capacitor aluminum casing coating, including composition A and composition B; said composition A includes the following materials in parts by mass: 40 parts of polyester resin, 15 parts of epoxy resin, 10 parts of S100# solvent naphtha, 20 parts of PMA, 1 part of dispersant, 3 parts of organosiloxane defoaming and leveling agent, 0.3 parts of acid catalyst, 5 parts of high insulation carbon black, 5 parts of mica powder; described composition B comprises the following by mass parts Substances: 20 parts of permethyl ether amino resin, 5 parts of high methylene amino resin, 30 parts of butyl acetate, 3 parts of butoxy cellosolve.

[0036] Produced as follows:

[0037] 1) Preparation of composition A: Mix polyester resin, epoxy resin, S100# solvent oil, PMA, dispersant, acid catalyst, organosiloxane defoaming and leveling agent, and stir at 500~800rpm for 10~ 15min; reduce the rotation speed to 200~300rpm, then add insulating carbon black and mica powder in turn, and then...

Embodiment 2

[0041] Capacitor aluminum shell coating, including composition A and composition B; said composition A includes the following materials in parts by mass: 65 parts of polyester resin, 10 parts of epoxy resin, 20 parts of S100# solvent oil, 10 parts of PMA, 2 parts of dispersant, 3 parts of organosiloxane defoaming and leveling agent, 0.5 part of acid catalyst, 3 parts of high insulation carbon black, 8 parts of mica powder; Described composition B comprises by mass parts as follows Substances: 15 parts of permethyl ether amino resin, 6 parts of high methylene amino resin, 15 parts of butyl acetate, 5 parts of butoxy cellosolve.

[0042] Production is carried out in the manner of Example 1, and the film-coating coating for the capacitor aluminum shell is obtained.

Embodiment 3

[0044] Capacitor aluminum casing coating, including composition A and composition B; said composition A includes the following materials in parts by mass: 45 parts of polyester resin, 12 parts of epoxy resin, 15 parts of S100# solvent naphtha, 15 parts of PMA, 1.5 parts of dispersant, 2 parts of organosiloxane defoaming and leveling agent, 0.4 part of acid catalyst, 4 parts of high insulating carbon black, 6 parts of mica powder; Described composition B comprises the following by mass parts Substances: 22 parts of permethyl ether amino resin, 5 parts of high methylene amino resin, 17 parts of butyl acetate, 4 parts of butoxy cellosolve.

[0045] Production is carried out in the manner of Example 1, and the film-coating coating for the capacitor aluminum shell is obtained.

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Abstract

The invention discloses capacitor aluminum shell coating and a production and coating method thereof. The coating is composed of a composition A and a composition B; the composition A is prepared from 40-50 parts of polyester resin, 10-15 parts of epoxy resin, 10-20 parts of S100# solvent oil, 10-20 parts of PMA (polymethyl acrylate), 1-2 parts of a dispersing agent, 1-2 parts of organic organo-siloxane debubbling and leveling agent, 0.3-0.5 part of acid catalysts, 3-5 parts of insulation carbon black and 5-8 parts of mica powder; the composition B is prepared from 15-20 parts of permethylated amino resin, 5-6 parts of polymethylene amino resin, 15-30 parts of n-butyl acetate and 3-5 parts of butoxy cellosolve. The production method includes: respectively producing the composition A and the composition B, and well mixing to obtain the coating. The coating method includes: subjecting an aluminum substrate to alkaline washing, uniformly coating the surface of the aluminum oxide substrate with the capacitor aluminum shell coating at the room temperature, and curing.

Description

technical field [0001] The invention belongs to the technical field of insulating and heat-resistant materials, and in particular relates to a coating coating for capacitor aluminum shells and a production and coating method thereof. Background technique [0002] With the technological advancement of the electronic technology industry, the manufacturing technology of electronic printed circuit boards has also made great progress. In order to reduce the size of electronic products and reduce consumption, capacitors, as one of the general components on electronic circuit , heat dissipation, small volume and other requirements are getting higher and higher, and the requirements for its insulation and breakdown resistance are also getting higher and higher. [0003] The insulation performance of electrolytic capacitors is better. First, the surface coating of the capacitor aluminum shell must have high insulation, so that the surface breakdown resistance of the capacitor aluminu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D163/00C09D161/32C09D5/25C09D7/61
CPCC08L2201/08C08L2203/20C08L2205/025C08L2205/035C09D5/00C09D7/61C09D167/00C08L63/00C08L61/32C08K3/04C08K3/34
Inventor 张德铭王顺有冯志德刘道义
Owner 江门市德佑金属材料实业有限公司