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A kind of electromagnetic wave shielding coating and preparation method thereof

A technology for shielding coatings and electromagnetic waves, applied in the field of coatings, can solve the problems of secondary clutter, secondary pollution, harmful effects on the environment and human health, etc., and achieve the effects of high ductility, good shielding performance, and prevention of electromagnetic leakage

Inactive Publication Date: 2011-12-07
朱恩灿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the traditional solvent-based shielding coatings on the market will inevitably volatilize a large amount of harmful substances during use, which will cause harmful effects on the environment and human health. Therefore, water-based electromagnetic shielding coatings are the key trend of development.
Moreover, the traditional shielding coating realizes the shielding of electromagnetic waves through reflection, which is easy to generate secondary clutter and cause secondary pollution.

Method used

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  • A kind of electromagnetic wave shielding coating and preparation method thereof
  • A kind of electromagnetic wave shielding coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-5

[0018] Embodiment 1-5 prepares electromagnetic wave shielding coating main raw material components and consumption (weight unit: gram)

[0019]

Embodiment 6-10

[0020] Embodiment 6-10 prepares electromagnetic wave shielding paint raw material components and consumption (weight unit: gram)

[0021]

[0022] According to the raw materials listed in the above-listed Examples 1-10, nickel powder and ferrite powder are mixed and dried together with water-soluble film-forming resin, epoxy resin, and dispersant as film-forming aids, and then in a grinder Grind, then add coupling agent solution, adjust the paint to viscosity 72S-76S with dispersant.

[0023] The coupling agent solution is a kind of titanate or silane, and any one of ethyl acetate, methyl acetate, butyl acetate, acetone, methyl ethyl ketone or ethanol is used as a solvent, and the concentration is 1.7% to 4.8%. %The solution.

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Abstract

The invention discloses a formula of electromagnetic wave shielding paint and a preparation method thereof. It is mainly based on nickel powder with excellent oxidation resistance, adding ferrite powder as a wave-absorbing material, together with epoxy resin, film-forming aids, coupling agents, dispersants, etc., to make water-soluble coatings. Above 23MPa, it can achieve 55dB-75dB shielding effectiveness for electromagnetic waves in the frequency range of 40MHz-18GHz.

Description

technical field [0001] The invention relates to a paint, in particular to a formulation of a paint capable of shielding electromagnetic waves; the invention also relates to a preparation method of the paint. Background technique [0002] With the rapid development of information technology, computer networks, information processing equipment, electronic communication equipment and various electrical equipment have been widely used in various industries as carriers of information technology. These electronic and electrical equipment generate a large number of electromagnetic waves during use. Although electromagnetic waves are used for remote control of electronic and electrical equipment and long-distance transmission of information, it is also easy for electronic and electrical equipment to malfunction or even be paralyzed by external electromagnetic interference, causing serious consequences. Therefore, it is necessary to take effective measures to protect the machine equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/32
Inventor 朱恩灿
Owner 朱恩灿
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