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Electromagnetic wave shielding material and preparation method thereof

A technology of shielding materials and electromagnetic shielding films, applied in the fields of magnetic/electric field shielding, electrical components, etc., can solve problems such as the inability to prepare electromagnetic wave shielding materials, achieve excellent flexibility and stable shielding performance, cost-effective, and simple processing procedures

Pending Publication Date: 2021-11-30
睿惢思工业科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problem that it is impossible to prepare an electromagnetic wave shielding material that can satisfy both flexibility and shielding properties in the prior art

Method used

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  • Electromagnetic wave shielding material and preparation method thereof
  • Electromagnetic wave shielding material and preparation method thereof
  • Electromagnetic wave shielding material and preparation method thereof

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Effect test

Embodiment 1

[0062] This embodiment provides an electromagnetic wave shielding material, comprising: at least one layer of electromagnetic shielding film, the electromagnetic shielding film is made of magnetic slurry; the magnetic slurry includes resin material and magnetic powder, the magnetic powder It is in the form of flakes, and the magnetic powder is uniformly arranged in the magnetic slurry; specifically, the resin material includes epoxy resin, polyacrylic resin, phenolic resin, polyester resin, polyamide resin and polyurethane resin one or more of . Specifically, the magnetic powder includes one or more of nano powder crystals, amorphous powder, permalloy powder and iron-cobalt alloy;

Embodiment 2

[0065] This embodiment provides a method for preparing an electromagnetic wave shielding material, such as Figure 1~Figure 6 shown, including the following steps:

[0066] S100, preparing magnetic powder:

[0067] Step S100 specifically includes:

[0068] S110. Configure magnetic metal powder, set grinding ball parameters, first grinding time, second grinding time and specification ratio threshold, based on the grinding ball parameters, the first grinding time, the second grinding time and the The specification ratio threshold is mixed and ground for the magnetic metal powder to obtain the powder to be annealed;

[0069] The mixing and grinding treatment includes: adding the magnetic metal powder into a granular ball mill, and adopting a number of steel balls corresponding to the parameters of the grinding balls in the granular ball mill, according to the first grinding time. The magnetic metal powder is mixed and ground to obtain a granular powder; in this embodiment, the...

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Abstract

The invention discloses an electromagnetic wave shielding material and a preparation method thereof. The electromagnetic wave shielding material comprises at least one layer of electromagnetic shielding film which is made of magnetic slurry, wherein the magnetic slurry comprises a resin material and magnetic powder, the magnetic powder is in a sheet shape, and the magnetic powder is uniformly arranged in the magnetic slurry; the resin material comprises one or more of epoxy resin, polyacrylic resin, phenolic resin, polyester resin, polyamide resin and polyurethane resin; and the magnetic powder comprises one or more of nano powder crystals, amorphous powder, permalloy powder and iron-cobalt alloy. The electromagnetic wave shielding material has excellent flexibility and stable shielding performance at the same time, and is simple in processing flow and extremely high in cost performance; and due to the special material design, multi-layer stacking can be achieved, the requirements of more industrial applications are met, and the defects in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave shielding material design, in particular to an electromagnetic wave shielding material and a preparation method thereof. Background technique [0002] With the development of science and technology, electromagnetic wave shielding materials are widely used in the field of electronic information and various electrical automation equipment; the electromagnetic wave shielding materials used in the prior art are magnetic metals or metal alloys, and the flexibility of this material is poor, resulting in its The scope of application is small, the applicability is poor and the cost of use is too high; [0003] In order to solve the problem of poor flexibility, in the prior art, a new shielding material is prepared by heat-treating the magnetic powder and then coating. However, this method will greatly reduce the shielding property of the shielding material during the preparation process. And...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B22F9/04B22F1/00
CPCH05K9/0081B22F9/04B22F2009/043
Inventor 张文杰鲁秦顾滢
Owner 睿惢思工业科技(苏州)有限公司