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Water-based electromagnetic shielding coating and preparation method and application thereof

An electromagnetic shielding coating, water-based technology, used in conductive coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor adhesion, uneven dispersion, and harmful components of water-based electromagnetic shielding, and achieve stable storage and performance. , The effect of uniform arrangement and high solid content

Inactive Publication Date: 2018-10-23
SHENZHEN PENGHUI FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a water-based electromagnetic shielding coating and its preparation method, to solve the existing organic solvent electromagnetic shielding coating containing harmful components, causing harm to workpieces, poor adhesion of water-based electromagnetic shielding and Technical problems with uneven dispersion

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  • Water-based electromagnetic shielding coating and preparation method and application thereof
  • Water-based electromagnetic shielding coating and preparation method and application thereof
  • Water-based electromagnetic shielding coating and preparation method and application thereof

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preparation example Construction

[0028] Correspondingly, the embodiment of the present invention also provides a preparation method of the above-mentioned water-based electromagnetic shielding paint. The preparation method of described water-based electromagnetic shielding paint comprises the steps:

[0029] Step S01: weighing each component according to the ratio of the components contained in the water-based electromagnetic shielding coating and the components described above;

[0030] Step S02: Mixing the components weighed in step S01.

[0031] Specifically, the preferred contents and types of the components of the water-based electromagnetic shielding paint in the above step S01 are as described above, and will not be repeated here to save space.

[0032]The mixing process in the above step S02 can be processed in a conventional way, such as stirring, ultrasonic treatment, etc., so that the components are uniformly dispersed. In one embodiment, the mixing process in step S02 is to first add functional ...

Embodiment 1

[0037] The present embodiment provides a water-based electromagnetic shielding coating and a preparation method thereof, which includes the following components by weight:

[0038] Water-based emulsified water-dispersed resin 7%, silver-coated copper powder 35%, methylethanolamine 3.5%, hydrophobically modified acrylic acid associative thickener 5.5%, absolute ethanol 18%, propylene glycol methyl ether acetate 5%, isopropyl Alcohol 26%. Wherein, the average particle diameter of the silver-coated copper powder is 7±1 μm.

[0039] The preparation method of the water-based electromagnetic shielding coating of the present embodiment may further comprise the steps:

[0040] S11. Weighing: Weigh water-based emulsified water-dispersed resin, silver-coated copper powder, methylethanolamine, hydrophobically modified acrylic acid associative thickener, absolute ethanol, propylene glycol methyl ether acetate, iso Components such as propanol;

[0041] S12. Preparation of slurry: Under ...

Embodiment 2

[0043] The present embodiment provides a water-based electromagnetic shielding coating and a preparation method thereof, which includes the following components by weight:

[0044] Water-based emulsified water-dispersed resin 10%, silver-coated copper powder 35%, methylethanolamine 3.5%, hydrophobically modified acrylic acid associative thickener 5.5%, absolute ethanol 20%, propylene glycol methyl ether acetate 5%, isopropyl Alcohol 21%. Wherein, the average particle diameter of the silver-coated copper powder is 7±1 μm.

[0045] The preparation method of the water-based electromagnetic shielding coating of the present embodiment may further comprise the steps:

[0046] S11. Weighing: Weigh water-based emulsified water-dispersed resin, silver-coated copper powder, methylethanolamine, hydrophobically modified acrylic acid associative thickener, absolute ethanol, propylene glycol methyl ether acetate, iso Components such as propanol;

[0047] S12. Preparation of slurry: Under...

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Abstract

A water-based electromagnetic shielding coating includes, by weight, 5%-20% waterborne polyurethane bonding agent, 25%-35% conducting powder, 2%-3% functional auxiliary, 3%-6% thickener, 45%-55% solvent. The water-based electromagnetic shielding coating provided by the invention is high in solid content, stable in dispersion system, and small in formed coating resistance, good for improvement of electromagnetic shielding effect, high in coating adherence and good in chemical resistance. The prepration method of the water-based electromagnetic shielding coating is controllable in technical conditions and can ensure the performance stability of the prepared water-based electromagnetic shielding coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based electromagnetic shielding coating and a preparation method and application thereof. Background technique [0002] Since the 21st century, the rapid development and application of modern communication, automation control and computer fields have brought great convenience to people's daily life, but also brought a lot of electromagnetic wave interference. Electromagnetic waves not only interfere with the normal use of electronic components and Harmful to human health. [0003] Traditional electromagnetic shielding materials are generally shielded with copper foil or metal shields. Due to high cost and irregularities in the product base material itself, construction difficulties and other factors make it impossible to apply a large area, so a new practical technology shielding coating is used instead. [0004] Therefore, conductive coatings arise at the h...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/24C09D5/08
CPCC08K2003/085C09D5/08C09D5/24C09D175/04C08K9/10C08K3/08C08K5/103C08K5/17
Inventor 王玉龙李立星陈渭涛
Owner SHENZHEN PENGHUI FUNCTIONAL MATERIAL CO LTD
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