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Composite electromagnetic shielding paint based on nano carbon material

A technology of composite electromagnetic and nano-carbon materials, applied in the direction of conductive coatings, radiation-absorbing coatings, epoxy resin coatings, etc., can solve the problems of high cost and high density, achieve good functions, wide absorption frequency band, and reduce environmental electromagnetic pollution Effect

Inactive Publication Date: 2016-02-17
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

However, due to the characteristics of the absorbing material itself, it is easily affected by the frequency, so it can only have a good shielding effect on a narrow frequency band.
[0005] Existing electromagnetic shielding coatings, some of which use metal powder, have high cost and high density

Method used

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Examples

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Embodiment 1

[0017] 2g of activated carbon particles with a particle size of 50nm, 0.5g of graphene microflakes with a thickness of 3nm, 0.3g of carbon nanotubes with a diameter of 3nm, 1g of carbon fibers with a diameter of 5μm, 1g of ferric oxide particles with a particle size of 100nm, and 1g of carbonyl iron with a particle size of 100nm Nickel particles, 10g polyurethane, 1g silane coupling agent, 2ml ethanol, 0.5g propylene glycol methyl ether acetate, 0.5g hydroxyethyl cellulose.

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Abstract

The invention discloses a composite electromagnetic shielding paint based on a nano carbon material. The composite electromagnetic shielding paint is prepared by mixing composite shielding materials such as nano carbon particles, nano graphene, carbon nanotube, carbon fiber, ferriferrous oxide particles, iron and nickel carbonyl particles with a polymer emulsion, a coupling agent, a dispersant, an antifoaming agent, a film forming auxiliary agent, a thickening agent and the like. The employed electromagnetic shielding paint has the advantages of low density and wide absorption band, and can be widely used in electromagnetic shielding engineering, and thereby, electromagnetic wave can be shielded and absorbed, electromagnetic interference is reduced, and electromagnetic environment pollution can be avoided.

Description

technical field [0001] The patent of the present invention relates to the field of electromagnetic shielding protection, in particular to a composite electromagnetic shielding coating based on nano-carbon materials. Background technique [0002] With the development of urbanization, industrialization, and informatization in our country, various electrical appliances and electronic equipment have filled every corner of our work and life. While modern equipment brings us convenience, it also continuously enhances the electromagnetic radiation around us. The pollution produced by electromagnetic radiation will not only interfere with the normal operation of electronic equipment, but also affect human health and ecological balance. The use of electromagnetic shielding materials for electromagnetic shielding protection is the most effective means of protection in daily work and life. [0003] Existing studies have shown that the use of certain materials or structures to reflect...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D125/14C09D133/00C09D131/04C09D163/00C09D5/32C09D5/24C09D7/12
Inventor 杨传俊蔡澎李骥
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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