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Novel composite electromagnetic shielding latex paint and preparation thereof

A technology of electromagnetic shielding and latex paint, applied in the direction of conductive paint, magnetic/electric field shielding, latex paint, etc., to achieve the effect of simple preparation method, high cost performance and easy operation

Inactive Publication Date: 2008-08-27
REAR SERVICE TECH EQUIP INST NAVY PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide a novel composite electromagnetic shielding latex coating applied to building walls and a preparation method thereof based on the existing technical status, mainly introducing an insulating interlayer into the conductive coating, and a On the one hand, it increases the reflective surface when the electromagnetic wave passes through the coating to improve the electromagnetic shielding performance; on the other hand, it does not increase the material cost and improves the utilization rate of the material

Method used

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  • Novel composite electromagnetic shielding latex paint and preparation thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The technological process and process parameters of the present embodiment are as follows:

[0041] 1. Ingredients

[0042] The formula (parts by weight) of the conductive layer coating is as follows:

[0043] Pure acrylate copolymer emulsion 50 parts

[0044] 30 parts of conductive nickel powder with a particle size of micron and a purity of more than 99.7%

[0045] Ethylene glycol butyl ether acetate 3 parts

[0046] 1.5 parts of hydroxyethyl cellulose

[0047] Inorganic bentonite 1.5 parts

[0048] 14 parts of purified water

[0049] The formula (parts by weight) of insulating interlayer paint is as follows:

[0050] Pure acrylate copolymer emulsion 90 parts

[0051] Ethylene glycol butyl ether acetate 4 parts

[0052] 1 part hydroxyethyl cellulose

[0053] 5 parts purified water

[0054] 2. Preparation of coating

[0055] (1) Preparation of the conductive layer part

[0056] Dry the originally prepared micron-sized nickel powder at a drying temperature o...

Embodiment 2

[0063] The technological process and process parameters of the present embodiment are as follows:

[0064] 1. Ingredients

[0065] The formula (parts by weight) of the conductive layer coating is as follows:

[0066] Styrene-acrylate copolymer emulsion 55 parts

[0067] Micron-sized conductive nickel powder 30 parts

[0068] Ethylene glycol butyl ether acetate 3 parts

[0069] Hydroxyethyl cellulose 0.5 parts

[0070] Inorganic bentonite 1.5 parts

[0071] 10 parts of purified water

[0072] The formula (parts by weight) of insulating interlayer paint is as follows:

[0073] Styrene-acrylate copolymer emulsion 90 parts

[0074] Ethylene glycol butyl ether acetate 3 parts

[0075] 31 parts of hydroxyethyl cellulose

[0076] 7 parts purified water

[0077] 2. Preparation of coating

[0078] (1) Preparation of the conductive layer part

[0079] Dry the originally prepared micron-sized nickel powder at a drying temperature of 70°C, and then mix styrene-acrylate copolym...

Embodiment 3

[0086] The technological process and process parameters of the present embodiment are as follows:

[0087] 1. Ingredients

[0088] The formula (parts by weight) of the conductive layer coating is as follows:

[0089] Pure acrylate copolymer emulsion 45 parts

[0090] Micron nickel powder 35 parts

[0091] 2 parts propylene glycol butyl ether

[0092] Methyl hydroxyethyl cellulose 1.0 parts

[0093] Inorganic bentonite 2 parts

[0094] 15 parts of purified water

[0095] The formula (parts by weight) of insulating interlayer paint is as follows:

[0096] Styrene-acrylate copolymer emulsion 91 parts

[0097] 2 parts propylene glycol butyl ether

[0098] 3 parts methyl hydroxyethyl cellulose

[0099] 5 parts purified water

[0100] 2. Preparation of coating

[0101] (1) Preparation of the conductive layer part

[0102] Dry the originally prepared micron-sized nickel powder, the optimal drying temperature is 60°C, and then mix pure acrylate copolymer emulsion, propylen...

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Abstract

The invention relates to a compound water-based electromagnetic shielding coating, which is composed of conducting layer coating and insulating layer coating, weight proportions of each component of conducting layer coating are that emulsion 30-60 parts, conductive filler 40-50 parts, film forming additive 1-5 parts, thickening agent 0.5-1 parts, thixotropic agent 1-2 parts and pure water 10-15 parts. The weight proportions of insulating layer coating are that emulsion 90-95 parts, film forming additive 2-8 parts, thickening agent 0.5-1 parts and pure water 5-10 parts. The architectural emulsion is at least one of pure acrylate copolymer emulsion, styrene-acrylate copolymer emulsion and vinyl acetate- acrylate copolymer emulsion. The grain diameter of conducting nickel powder is micro grade, which has excellent oxidation resistance, and is combined with polymer emulsion, and electrical surface resistivity is greatly lowered. The shielding coating is coated on the inner surface of architecture according to the conducting / insulating / conducting mode, coating layer with the functions of conducting and electromagnetic shielding can be formed, the capabilities of resisting external electromagnetic interference and electromagnetic pollution can be effectively improved.

Description

technical field [0001] The invention belongs to the field of electromagnetic wave shielding coatings, and in particular relates to a novel composite structure electromagnetic shielding latex coating and a preparation method thereof. Background technique [0002] With the rapid development of electronic technology and information technology, electrical and electronic equipment has been widely used. These electronic devices radiate electromagnetic waves of different frequencies and energies into the space all the time, which makes the energy and density of electromagnetic waves in the space continuously increase. This not only interferes with the normal operation of other electronic equipment, causing electromagnetic leakage, but also endangers human health. Electromagnetic pollution has become the fourth major public hazard that threatens human existence after noise pollution, air pollution and water pollution. In order to curb the increasing electromagnetic pollution and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D125/14C09D131/04C09D7/00C09D5/02C09D5/24H05K9/00
Inventor 李永张松刘增堂倪余伟黄洁蔡森刘宏宇姜蓬勃
Owner REAR SERVICE TECH EQUIP INST NAVY PLA
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