Coating material of silicone rubber magnetic core and coating method thereof

A coating material, silicone rubber technology, applied in the direction of the magnetism of organic materials/organic magnetic materials, permanent magnet manufacturing, inductor/transformer/magnet manufacturing, etc. and other problems, to achieve the effect of improving product consistency, good chemical stability, and simple production process

Inactive Publication Date: 2020-10-30
东莞市华芯联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current application requirements of new products, especially the coils and transformers of vehicle-mounted electronic equipment, the current insulation method of coating epoxy resin materials has not met the product requirements. Chips have a serious impact on the circuit and affect product reliability
Easy to corrode, aging and cracking, poor insulation, not resistant to high voltage impact
Coils cannot be directly wound on epoxy-coated magnetic cores, manual steps are required, mass production cannot be automated, and product consistency cannot be guaranteed
The spraying process is harmful to the environment, the production capacity is limited, and the cost is getting higher and higher

Method used

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Examples

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] Among the present invention, a coating material of a silicon rubber magnetic core and a coating method thereof comprise the following steps:

[0026] (1) Prepare the mold and silicone material for making the magnetic core;

[0027] (2) Put the silicone material into the mold to make a magnetic core;

[0028] (3) Determine the size of the magnetic core and inspect the surface of the magnetic core through mechanical photography. The magnetic core with no sharp angles and burrs on the surface and a qualified size is a qualified...

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Abstract

The invention discloses a coating material of a silicone rubber magnetic core and a coating method thereof. A ferrite magnetic core is used in coils and transformers of various electronic devices. Traditionally, a surface of a magnetic core needs to be coated with an insulating coating made of an epoxy resin material, compared with the prior art, the coating material is advantaged in that the magnetic core made of silica gel is good in chemical stability, free of influence of cold and hot impact, high in toughness, high in insulativity, resistant to corrosion, simple in production process, high in yellowing resistance and environmentally friendly, automatic large-batch production can be realized, the voltage resistance, corrosion resistance and aging resistance of electronic equipment andtransformers are greatly improved, reliability and stability of products in severe environments such as high temperature, high pressure, high and low temperature impact, salt mist and high temperatureand high humidity are particularly improved, meanwhile, the process has large-batch automatic production capacity, and consistency of products is greatly improved.

Description

technical field [0001] The invention relates to the field of magnetic cores, in particular to a coating material for a silicon rubber magnetic core and a coating method thereof. Background technique [0002] The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core body materials, and manganese-zinc ferrite has the characteristics of high magnetic permeability and high magnetic flux density, and has the characteristic of lower loss. Nickel-zinc ferrite has the characteristics of extremely high resistivity and low magnetic permeability of less than a few hundred. [0003] Ferrite cores are used in coils and transformers in various electronic devices. Traditionally, the magnetic core needs to be coated with an insulating coating made of epoxy resin material on the surface. According to the current application requirements of new products, especial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F1/42
CPCH01F1/42H01F41/0253H01F41/026H01F41/0266
Inventor 袁宇发徐自强谢文
Owner 东莞市华芯联科技有限公司
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