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A 0.6-18ghz frequency band wave absorbing powder/epoxy anti-electromagnetic interference coating material and preparation method thereof

An anti-electromagnetic interference and coating material technology, applied in epoxy resin coatings, radiation-absorbing coatings, coatings, etc., can solve the problem of not revealing high-frequency electromagnetic waves, etc., and achieve long-term anti-electromagnetic interference, good construction performance, Good corrosion resistance

Active Publication Date: 2016-03-23
ZHEJIANG YUANBANG MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Chinese application number: CN201010561198.2, patent name: Compliant coating electromagnetic shielding coating and the patent application of the conforming coating electromagnetic shielding material disclosed that the conforming coating electromagnetic shielding coating includes a conductive layer coating with a reflective function and an absorbing coating. Functional wave-absorbing coating; reflective layer coating components include: polymer emulsion, conductive filler, coupling agent, defoamer, wetting agent, film-forming aid, thickener and water; wave-absorbing layer coating components include: Polymer emulsion, wave-absorbing filler, coupling agent, defoamer, wetting agent, film-forming aid, thickener and water; the invention adopts the method of compounding wave-absorbing layer and reflective layer to prepare electromagnetic radiation shielding material, which is effective reduce the secondary pollution caused by reflection of electromagnetic radiation, but this scheme does not reveal whether it has a good absorbing effect on high-frequency electromagnetic waves

Method used

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  • A 0.6-18ghz frequency band wave absorbing powder/epoxy anti-electromagnetic interference coating material and preparation method thereof
  • A 0.6-18ghz frequency band wave absorbing powder/epoxy anti-electromagnetic interference coating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Under stirring conditions, mix 50% of 0.6-18GHz wave-absorbing powder with 18% of epoxy resin, disperse evenly, and prepare invisible powder epoxy resin slurry by sand milling or ball milling.

[0035] 2) Under stirring conditions, add 10% hollow microspheres, 2% amino resin, 1% coating additives, 9% solvent, 10% pigments and fillers to the invisible powder epoxy resin slurry in (1). Epoxy anti-electromagnetic interference coating.

[0036] 3) According to the specified ratio, add the epoxy curing agent to the epoxy anti-electromagnetic interference coating, stir evenly, and mature for 20 minutes.

[0037] 4) Curing to form a film at room temperature (25°C).

Embodiment 2

[0039] 1) Under stirring conditions, mix 48% of 0.6-18GHz wave-absorbing powder with 20% of epoxy resin, disperse evenly, and prepare invisible powder epoxy resin slurry by sand milling or ball milling.

[0040] 2) Under stirring conditions, add 9% of hollow microspheres, 2% of amino resin, 1% of coating additives, 9% of solvent, and 11% of pigments and fillers into the invisible powder epoxy resin slurry in (1). Epoxy anti-electromagnetic interference coating.

[0041] 3) According to the specified ratio, add the epoxy curing agent to the epoxy anti-electromagnetic interference coating, stir evenly, and mature for 20 minutes.

[0042] 4) Curing to form a film at room temperature (25°C).

Embodiment 3

[0044] 1) Under stirring conditions, mix 46% of 0.6-18GHz wave-absorbing powder with 18% of epoxy resin, disperse evenly, and prepare invisible powder epoxy resin slurry by sand milling or ball milling.

[0045] 2) Under stirring conditions, add 11% of hollow microspheres, 3% of amino resin, 1% of coating additives, 9% of solvent, and 12% of pigments and fillers into the invisible powder epoxy resin slurry in (1). Epoxy anti-electromagnetic interference coating.

[0046] 3) According to the specified ratio, add the epoxy curing agent to the epoxy anti-electromagnetic interference coating, stir evenly, and mature for 20 minutes.

[0047] 4) Curing to form a film at room temperature (25°C).

[0048] Using the wave-absorbing powder / epoxy anti-electromagnetic interference coating material prepared in Example 1 above, it is sprayed on the aluminum alloy plate substrate to make a square standard coated wave-absorbing plate. The thickness of the wave-absorbing layer is 1mm, and the ...

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Abstract

The invention belongs to the technical field of chemical industry and materials, and relates to a 0.6-18GHz-frequency-band wave-absorbing powder / epoxy anti-electromagnetic interference coating material and a preparation method thereof. The preparation method comprises the steps of: dispersing and grinding specific frequency band of wave-absorbing powder and epoxy resin to obtain wave-absorbing powder / epoxy resin slurry, stirring and blending non-essential modified resin, non-essential amino resin, a non-essential epoxy curing agent, a non-essential solvent, non-essential filler, and non-essential coating auxiliaries, curing into membranes at room temperature, to obtain the 0.6-18GHz-frequency-band wave-absorbing / epoxy anti-electromagnetic interference coating material. The 0.6-18GHz-frequency-band wave-absorbing / epoxy anti-electromagnetic interference coating material can absorb more than 85% of 0.6-18GHz frequency band of electromagnetic wave, is good in corrosion resistance property and mechanical property, has good workability and long-acting anti-electromagnetic interference effect, and can be used in the fields of a mobile communication substation, a power locomotive, a high-voltage substation and other places easily generating high-frequency electromagnetic wave interference.

Description

technical field [0001] The invention belongs to the technical fields of chemical industry and materials, in particular to a wave-absorbing powder / epoxy anti-electromagnetic interference coating material with a frequency range of 0.6-18 GHz and a preparation method thereof. Background technique [0002] At present, in terms of electromagnetic wave pollution protection, most of them use electromagnetic wave reflective materials. Although this method solves the protective effect on certain objects, it will inevitably cause secondary pollution of electromagnetic waves. [0003] With the development of modern science and technology and the continuous progress of industrial civilization, electronic appliances and communication systems have penetrated into various fields of production and life, and electromagnetic radiation has become a physical factor that is constantly increasing, changing the physical properties of human living environments. The intensity, time, and complexity o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D163/02C09D161/20C09D161/32C09D161/24C09D7/12C09D5/32
Inventor 高原胡庆江李阳田城华
Owner ZHEJIANG YUANBANG MATERIAL TECH