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Waterborne electromagnetic shielding coating and preparation method thereof

An electromagnetic shielding paint, water-based technology, applied in the field of high-performance water-based electromagnetic shielding paint and its preparation, can solve the problems of poor wave absorption performance, narrow absorption frequency band of conductive fillers, and difficulty in meeting shielding requirements, and achieves obvious innovation and excellent performance. Shielding effectiveness, the effect of meeting the requirements of impedance matching

Inactive Publication Date: 2016-01-13
GUANGDONG SANVO CHEM IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A single conductive filler has disadvantages such as narrow absorption frequency band and poor microwave absorption performance, and it is difficult to meet the increasing shielding requirements

Method used

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  • Waterborne electromagnetic shielding coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] According to the ratio of parts by weight, put 10.0 parts of water into the dispersion kettle, and put in 0.1 parts of Dow Chemical BD-1090.1 parts, San Nopco Chemical SN-50400.4 parts, and San Nopco SN-DEFOAMER3280.1 at a speed of 500 rpm. 0.7 parts of propylene glycol, 0.5 parts of WACKER BS1680, evenly dispersed, slowly add 1.8 parts of Deqian RHEOLATE420, add 12.0 parts of graphene / nano-ferrite composite material, 4.0 parts of nano-silicon carbide, and 4.0 parts of nano-metal nickel powder , increase the rotation speed to 1000 rpm and disperse at high speed for 30 minutes until the fineness is less than 60um; then add 32.0 parts of Dow Chemical AC-261P in turn, and after dispersing for 5 minutes, add 1.3 parts of Eastman OE3000 and 0.2 parts of Dimei KSG1030 , 0.6 part of Dimei BDM paint film antifungal agent, 0.1 part of Ashland Chemical NLS2100, stir evenly to get the finished product.

Embodiment 2

[0042]According to the proportion by weight, put 18.0 parts of water into the dispersing kettle, and then put in 0.2 parts of Clariant LCN4070, 0.5 parts of Saint Nopco Chemical SN-50400, 90.2 parts of Blackburn CF1369, ethylene glycol at a speed of 900 rpm 1.0 parts, Dow Chemical AMP-950.3 parts, evenly dispersed, slowly add Deqian RHEOLATE4200.5 parts, add 0.133 parts of graphene / nano-ferrite composite material, 13.289 parts of zinc oxide whiskers, 13.289 parts of nano-silicon carbide, nano 13.289 parts of metal nickel powder, increase the rotation speed to 1000 rpm and disperse at high speed for 30 minutes until the fineness is less than 60um; then put in 25.0 parts of Yinyang resin YC-8360, and after dispersing for 3 minutes, put in 121.8 parts of Runtai Chemical C-121.8 parts and Dow Chemical LXE0. 4 parts, Sol ACTICIDEEPW 0.3 part, Dow Chemical RM-2020NPR 0.2 part, stir evenly to get the finished product.

Embodiment 3

[0044] According to the proportion by weight, put 60.0 parts of water into the dispersion kettle, and put in 50.3 parts of Deqian FX3650, 0.8 parts of San Nopco Chemical SN-50400.8 parts, 0.8 parts of Corning Foamstar2230.8 parts, 1.3 parts of propylene glycol, Sears Chemical Ammonia 0.2 parts, evenly dispersed, slowly add 2.0 parts of Dow Chemical TT-615, add 24.0 parts of graphene / nano-ferrite composite material, 12.0 parts of zinc oxide whiskers, 12.0 parts of nano-silicon carbide, nano-metal 12.0 parts of nickel powder, increase the speed to 1000 rpm and disperse at high speed for 30 minutes until the fineness is less than 60um; then add 40.0 parts of Shinko Chemical XG-2606, and after dispersing for 3 minutes, 0.8 parts of Eastman Texanol, 0.3 parts of Sol ActicdeRS, Sol EWPASTE 0.4 parts, San Nopco's SN-THICKENER 6120.3 parts, stir evenly to get the finished product.

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Abstract

The invention relates to a preparation method of waterborne electromagnetic shielding coating. According to the formulation, the waterborne electromagnetic shielding coating is prepared from, by weight, 10.0-60.0 parts of water, 0.1-0.3 part of wetting agents, 0.4-0.8 part of dispersant, 0.1-0.3 part of defoamer, 0.7-1.3 parts of anti-freezing agents, 0.2-0.5 part of pH modifier, 20.0-60.0 parts of electromagnetic shielding additives, 0.5-2.0 parts of thickener, 25.0-40.0 parts of acrylic emulsion, 0.8-1.3 parts of coalescing agents, 0.2-0.4 part of preservative, 0.3-0.6 part of mould-proof anti-alga agents and 0.1-0.3 part of theological additives. The preparation method has the following advantages that the waterborne electromagnetic shielding coating prepared from graphene / nano ferrite, zinc oxide whiskers, nano silicon carbide, nanometal nickel powder and other materials has the advantages of being light, wide in frequency band, excellent in shielding performance, safe, environmentally friendly and the like, and the requirements of the electromagnetic shielding materials for impedance matching are met.

Description

technical field [0001] The invention relates to a water-based paint, in particular, composite materials such as graphene / nano-ferrite base, zinc oxide whisker, nano-silicon carbide, and nano-metal nickel powder are applied to a high-performance water-based electromagnetic shielding paint and a preparation method thereof. . Background technique [0002] The rapid development of electronics, electrical, communication and information industries has brought great convenience to people's life and work, and at the same time, electromagnetic radiation pollution has become a new environmental pollution after wastewater pollution, waste gas pollution, solid waste pollution, and noise pollution. , not only cause serious interference to people's daily communication equipment, computers and other electronic systems, pose a serious threat to information security, but also cause immeasurable damage to human health. The absorbing material is a kind of functional material that can absorb a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/12C09D5/14
Inventor 陈明毅陈炳耀陈亮
Owner GUANGDONG SANVO CHEM IND TECH
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