Electromagnetic wave screen paint and preparation method thereof

A technology for shielding coatings and electromagnetic waves, which is applied in the formulation and preparation of water-based shielding coatings. It can solve the problems of volatile harmful substances and harmful effects on physical and mental health, and achieve good shielding performance, wide use environment and high shielding efficiency.

Inactive Publication Date: 2007-10-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional solvent-based shielding coatings will inevitably volatilize a large amount of harmful substances during use, causing harmful effects on the environment and people's physical and mental health. Therefore, water-based shielding coatings are the key trend in the development of shielding coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The component and component content of the coating of the present embodiment are:

[0037] 20 parts of water-soluble polyurethane resin

[0038] Flake silver powder 20 parts

[0039] Silver clad copper powder 15 parts

[0040] 1 part magnetic fiber

[0041] 20 parts of mixed solvent of water and ethanol

[0042] KH550 silane coupling agent 0.5 parts

Embodiment 2

[0044] The component and component content of the coating of the present embodiment are:

[0045] Water-soluble polyurethane resin 17-36c 23 parts

[0046] Flake silver powder (-500 mesh) 16.3 parts

[0047] Dendritic silver-coated copper powder (-400 mesh) 20 parts

[0048] Magnetic fiber 3 parts

[0049] 35 parts of mixed solvent of water and ethanol

[0050] 0.5 parts of water-soluble dispersant

[0051] 0.2 parts of defoamer

[0052] KH550 silane coupling agent 1 part

[0053] White carbon black 1 part

Embodiment 3

[0055] The component and component content of the coating of the present embodiment are:

[0056] Water-soluble polyurethane resin 17-36c 30 parts

[0057] Flake silver powder (-500 mesh) 15 parts

[0058] Dendritic silver-coated copper powder (-400 mesh) 20 parts

[0059] Magnetic fiber 3 parts

[0060] 40 parts of mixed solvent of water and ethanol

[0061] 0.5 parts of water-soluble dispersant

[0062] 0.1 part of defoamer

[0063] KH550 silane coupling agent 1 part

[0064] White carbon black 0.5 parts

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PUM

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Abstract

This invention relates to preparation method of electromagnetic wave shield dope. According to weight It includes follow components: 20 to 30 shares water-solubility urethane resin, 15 to 20 shares lamellar aluminum powder, 15 to 20 shares silver-wrapped copper powder, 1 to 3 shares magnetism fiber, 0.5 to 1 shares KH550 silane coupling agent, 20 to 40 shares water and ethanol blending solvent.

Description

technical field [0001] The invention relates to electromagnetic wave shielding paint technology, in particular to the formula of water-based shielding paint and its preparation method. Background technique [0002] Electromagnetic information leakage generated by electronic information equipment represented by computers and communication machines during normal operation is increasingly harmful to information security, and information leakage has attracted the attention of all walks of life. Especially in recent years, the struggle of stealing and anti-stealing has developed into a fierce electronic countermeasure under high-tech conditions. Therefore, preventing information leakage and ensuring information security has become an important research topic for countries all over the world, especially for military departments. [0003] With the rapid development of the electronics industry, all kinds of electronic instruments are widely used in all walks of life and households. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12C09D5/00H05K9/00
Inventor 陈良谢建良梁迪飞邓龙江陆海鹏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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