Electromagnetic shielding coating for electronic components, and preparation method thereof

A technology for electromagnetic shielding coatings and electronic components, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor heat dissipation, unreasonable component distribution ratio, complex formula, etc., to achieve good heat dissipation effect, components and distribution than reasonable effect

Inactive Publication Date: 2017-02-15
ZHONGSHAN ZHINING BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing heat-dissipating coatings have complex formulas, unreasonable component distribution ratios, and relatively poor heat-dissipating effects

Method used

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  • Electromagnetic shielding coating for electronic components, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 30 parts of water-based polyurethane emulsion, 5 parts of surface hydroxylated carbon nanotubes, 2 parts of graphene, 5 parts of beryllium oxide, 3 parts of boron nitride, 1 part of bentonite, 1.1 parts of auxiliary agent, 20 parts of water, and 6 parts of curing agent.

[0025] The curing agent of the present invention is triethylenetetramine.

[0026] The auxiliary agent comprises 0.1 part of polyphosphate, 0.2 part of silylsilane, 0.3 part of polyether modified polydimethylsiloxane, and 0.5 part of tri-n-butyl citrate in parts by weight.

[0027] The water-based polyurethane emulsion is an alkyl-hydroxy silicone oil-modified water-based polyurethane. The preparation method is as follows: by weight, 10 parts of TDI, 8 parts of polyether, 8 parts of DMPA, and 10 parts of alkyl-hydroxy silicone oil are mixed uniformly, and the temperature is raised to 70°C, Add 0.5 part of organotin catalyst to react for 3h, then add 5 parts of chain extender to react for 1h, then add acetone ...

Embodiment 2

[0032] 50 parts of water-based polyurethane emulsion, 8 parts of surface hydroxylated carbon nanotubes, 4 parts of graphene, 8 parts of beryllium oxide, 5 parts of boron nitride, 3 parts of bentonite, 2.2 parts of additives, 40 parts of water, and 10 parts of curing agent.

[0033] The auxiliary agent comprises 0.5 parts by weight of polyphosphate, 0.4 parts of silylsilane, 0.5 parts of polyether modified polydimethylsiloxane, and 0.8 parts of tri-n-butyl citrate.

[0034] The water-based polyurethane emulsion is an alkyl-hydroxy silicone oil modified water-based polyurethane. The preparation method is as follows: in parts by weight, 30 parts of TDI, 20 parts of polyether, 16 parts of DMPA, and 18 parts of alkyl-hydroxy silicone oil are mixed uniformly, heated to 90°C, and added 0.5~3 parts of organotin catalyst are reacted for 6h, then 10 parts of chain extender are added for reaction for 3h, then acetone is added to dilute the reactant, after cooling, add triethylamine to neutrali...

Embodiment 3

[0039] 40 parts of water-based polyurethane emulsion, 6 parts of surface hydroxylated carbon nanotubes, 3 parts of graphene, 6 parts of beryllium oxide, 4 parts of boron nitride, 2 parts of bentonite, 1.5 parts of additives, 30 parts of water, 8 parts of curing agent.

[0040] The auxiliary agent comprises 0.2 parts of polyphosphate, 0.3 parts of silyl silane, 0.4 parts of polyether modified polydimethylsiloxane, and 0.6 parts of tri-n-butyl citrate by weight.

[0041] The water-based polyurethane emulsion is an alkyl-hydroxy silicone oil modified water-based polyurethane, and the preparation method is as follows: by weight, 20 parts of TDI, 12 parts of polyether, 12 parts of DMPA, and 14 parts of alkyl-hydroxy silicone oil are mixed uniformly, and the temperature is raised to 80°C, Add 1 part of organotin catalyst to react for 4h, then add 6 parts of chain extender to react for 2h, then add acetone to dilute the reactant, add triethylamine to neutralize the salt after cooling down,...

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Abstract

The present invention discloses an electromagnetic shielding coating for electronic components. The electromagnetic shielding coating comprises the following components in parts by weight: 30-50 parts of water-based polyurethane emulsion, 5-8 parts of surface-hydroxylated carbon nanotubes, 2-4 parts of graphene, 5-8 parts of beryllium oxide, 3-5 parts of boron nitride, 1-3 parts of bentonite, 1.1-2.2 parts of auxiliary agent, 20-40 parts of water and 6-10 parts of curing agent. According to the technical scheme of the invention, the defects in the prior art are overcome. Meanwhile, the electromagnetic shielding coating for electronic components is reasonable in component composition and component ratio, and good in heat radiation effect. The invention also provides a method for preparing the above heat radiation coating.

Description

Technical field [0001] The present invention relates to an electromagnetic shielding paint for electronic components. Another object of the present invention is to provide a method for preparing the above heat dissipation paint. Background technique [0002] The heat dissipation coating is a special coating that improves the heat dissipation efficiency of the surface of the object and reduces the temperature of the system. The heat dissipation coating enhances the heat dissipation performance of the object by improving the radiation efficiency of the surface of the object. The existing heat-dissipating coatings have complex formulations, unreasonable composition ratios, and relatively poor heat dissipation effects. Summary of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an electromagnetic shielding paint for electronic components with reasonable components and ratios and good heat dissipation effects; [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12
CPCC09D175/08C08K2201/011C08L2203/20C08L2205/035C08L85/02C08L83/12C08K13/06C08K9/02C08K7/24C08K3/04C08K3/22C08K2003/385C08K3/346C08K5/11
Inventor 蔡晋方敏
Owner ZHONGSHAN ZHINING BIOTECH CO LTD
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