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Electromagnetic wave interference preventive material and production thereof

A technology of anti-electromagnetic wave and manufacturing method, which is applied in the direction of electrical components, magnetic field/electric field shielding, etc., can solve the problems of poor reflection and absorption ability, poor combination, and small specific surface area of ​​materials, etc., and achieve light weight and processing Ease of use and the effect of increasing the specific surface area

Inactive Publication Date: 2005-07-27
横店集团东磁有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At the same time, the present invention solves the technical problems of high production cost, complex production process, small specific surface area of ​​the material, and unsatisfactory reflection and absorption capacity in the prior art; it provides a low-cost, high specific surface area Large, reflective and absorptive anti-electromagnetic wave material and method of manufacturing the same
[0007] The present invention also solves the technical problems in the prior art that there are large gaps between material layers, unsatisfactory combination with glue, and low flexibility; it provides a material layer with small gaps and excellent bonding performance with glue. Good, easy to bend, cut, and punch into any shape, and the anti-electromagnetic wave interference material and its manufacturing method are extremely convenient for processing and use

Method used

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  • Electromagnetic wave interference preventive material and production thereof
  • Electromagnetic wave interference preventive material and production thereof
  • Electromagnetic wave interference preventive material and production thereof

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Effect test

Embodiment

[0027]Embodiment: The anti-electromagnetic wave interference material is composed of an impedance matching layer, an absorbing layer, and a reflecting layer; the impedance matching layer is made of materials including absorbing sendust powder, manganese-zinc ferrite and resin; the The absorption layer is made of materials including absorption type sendust powder, nickel zinc ferrite and resin; the reflection layer is made of materials including reflection type sendust powder, iron powder and resin.

[0028] Table 1 Component distribution ratio of absorption sendust powder

[0029]

[0030] The preparation process of absorption-type sendust powder is as follows: First, weigh various raw materials according to the formula; put them into a ball mill and mix them for 2.5 hours; then melt them at 1800°C for 8 hours; water pressure atomize them into 150-mesh particles; put them into a ball mill Medium ball milling for 3 hours; then carry out vacuum insulation at 700°C for 4 hours...

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Abstract

The anti electromagnetic interference material is composed of several layers: the impedance matching layer is made of absorbing type sendust powder, manganese-zinc ferrite and resin; the absorbing layer is made of absorbing type sendust powder, nickel zinc ferrite and resin; the reflecting layer is made of reflection type sendust powder, iron powder and resin.

Description

technical field [0001] The invention relates to a magnetic material, in particular to an improvement of an anti-electromagnetic wave interference material component and an improvement of a manufacturing method thereof. Background technique [0002] With the continuous development of human production activities and the continuous progress of industrial civilization, the electromagnetic radiation caused by various electronic equipment and information terminal communication systems has become more and more powerful, and has gradually become a global public hazard. The harm of this electromagnetic radiation to the human body has been widely confirmed by the medical profession. It also has a significant impact on the reliability and accuracy of various industrial equipment. How to effectively protect against electromagnetic radiation has become an important topic in the global scientific and technological community. At present, daily electrical appliances on the market, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 何时金盛小东陆柏松何跃进
Owner 横店集团东磁有限公司
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