Low-frequency electromagnetic wave magnetic shielding composite paint and its preparation method

A composite coating and magnetic shielding technology, applied in the direction of conductive coating, reflection/signal coating, etc., can solve the problems of high cost, complex process, strict equipment requirements, etc., and achieve the effect of low cost, simple preparation method and low risk

Inactive Publication Date: 2003-04-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above method has complex process, strict equipment requirements and high cost

Method used

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Examples

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Embodiment

[0028] The present invention is described in detail by the following examples. It is necessary to point out that this example can only be used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention. Those skilled in the art can according to the above-mentioned The content of the invention makes some non-essential improvements and adjustments.

[0029] 1. The average particle size is 40 grams of μm nickel powder, the fiber diameter is 10 μm, and the fiber aspect ratio is 5 grams of nickel-plated graphite magnetic fiber with a fiber aspect ratio of 80 and Fe-Cu-Nb-Si-B amorphous magnetic powder with a particle size of 40 μm Add 25 grams into the prepared silane-ethanol solution, the concentration of silane-ethanol solution is 8%, and 10 grams are ground with a ball mill for 10 minutes. After being uniformly dispersed, dry at a temperature of 70°C. The solid content is 20 grams of 60% epoxy resin and 70 gr...

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PUM

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Abstract

The present invention relates to a low-frequency electromagnetic wave magnetic shield composite material and its preparation method. It is characterized by that it adopts magnetic powder, magnetic fibre and amorphous magnetic powder as magnetic conductive filling material, uses macromolecualr resin as film-forming matter, and makes them and coupling agent and solvent undergo the processes of blending, mixing, grinding and filtering at normal temp. so as to obtain the invented composite material whose magnetic shield effect can be up to 14-15 dB, so that it possesses extensive application.

Description

1. Technical field [0001] The invention belongs to the field of low-frequency electromagnetic wave magnetic shielding materials, and relates to a low-frequency electromagnetic wave magnetic shielding composite paint and a preparation method thereof. 2. Background technology [0002] Traditional magnetic shielding materials mostly use single materials such as thin steel plates, sheets, and thin strips. Some people use the powder metallurgy method to manufacture porous stainless steel sintered plate magnetic shielding materials. The method is to atomize the stainless steel alloy melt smelted by a high-frequency induction furnace with water to make powder, and stamp the powder into a stainless steel plate under a certain pressure. The flat plate is vacuum sintered (1273k×60min) into a stainless steel plate (thickness 4mm), and its low-frequency magnetic shielding effectiveness can reach 15dB (see "Powder Body およぴ Powder Metallurgy", No. 2, 1999, page 156). [0003] The researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/24C09D5/33
Inventor 管登高黄婉霞涂铭旌陈家创
Owner SICHUAN UNIV
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