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Wave-absorbing material for electromagnetic field shielding

A wave absorbing material and electromagnetic field technology, applied in the field of wave absorbing materials, can solve problems such as human health hazards, abnormal work, electromagnetic interference, etc., and achieve the effects of improving product service life, improving thermal conductivity, and strong absorption characteristics

Active Publication Date: 2015-09-09
斯迪克新型材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electromagnetic waves released by electronic products will cause electromagnetic interference to other electronic devices around them, making them work abnormally; at the same time, they will also cause harm to human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0031] Embodiments 1 to 4: A wave-absorbing material for electromagnetic field shielding, the wave-absorbing material is composed of the following components, and the components and contents are shown in Table 1:

[0032] Table 1

[0033] Example 1 Example 2 Example 3 Example 4 Absorbing powder 100 copies 100 copies 100 copies 100 copies Butyl acrylate 20 copies 32 copies 30 copies 28 copies acrylic acid 10 copies 15 copies 18 copies 20 copies Isooctyl acrylate 25 copies 22 copies 32 copies 35 copies Methyl methacrylate 18 copies 26 copies 12 copies 28 copies Vinyl acetate 1 copy 2.8 servings 1.8 servings 2 copies 2-Hydroxyethyl methacrylate 0.2 parts 0.5 parts 0.8 parts 0.6 parts Sodium polyacrylate 1.5 servings 2 copies 1.2 parts 0.9 parts methyl ethyl ketone peroxide 0.6 parts 0.9 parts 0.6 parts 0.8 parts

[0034] The absorbing powder co...

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PUM

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Abstract

The invention discloses a wave-absorbing material for electromagnetic field shielding. The wave-absorbing material is composed of the following ingredients: 100 parts of a wave-absorbing powder, 20-35 parts of butyl acrylate monomer, 10-20 parts of acrylic acid, 20-35 parts of 2-ethylhexyl acrylate, 10-30 parts of methyl methacrylate, 1-3 parts of vinyl acetate, 0.1-1 part of methacrylic acid-2-hydroxyl ethyl, 0.5-2 parts of sodium polyacrylate and 0.4-1 part of methylethyl ketone peroxide. The wave-absorbing powder is composed of the following ingredients: BaFe12O19, nickel sesquioxide, nano-graphite powder, cobalt naphtenate, nonsaturated polyester and an acrylic acid leveling agent. Attenuation rate of electromagnetic wave at 2-10 GHz reaches 88%, which is beneficial to polymer gluing and uniform dispersion of mixed powders in the polymer. Thus, reliability of electromagnetic performance is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and in particular relates to a wave-absorbing material used for electromagnetic field shielding. Background technique [0002] With the development of the electronics industry, more and more electronic and electrical products have entered people's lives, and the electromagnetic radiation brought by these products has an increasing impact on the environment. The electromagnetic waves released by electronic products will bring electromagnetic interference to other electronic devices around, making them work abnormally; at the same time, they will also cause harm to human health. Therefore, research and development of absorbing materials that can weaken electromagnetic radiation has become a hot topic in materials science. [0003] Absorbing materials refer to a class of materials that can effectively absorb incident electromagnetic waves and attenuate them. It converts incident electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/06C08F220/14C08F218/08C08F220/28C08F2/44C08K13/02C08K3/22C08K3/04C08K5/098B32B9/04B32B9/06B32B7/06
Inventor 金闯杨晓明
Owner 斯迪克新型材料(江苏)有限公司
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