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Novel composite electromagnetic shielding latex paint and preparation thereof

An electromagnetic shielding, composite technology, applied in the direction of coating, chemical instruments and methods, synthetic resin layered products, etc., to achieve the effects of good applicability and field construction, easy operation and simple preparation method

Inactive Publication Date: 2011-02-09
REAR SERVICE TECH EQUIP INST NAVY PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application documents of this patent indicate that the coating has good physical and environmental performance. In the frequency range of 9KHz-1000MHz, the electromagnetic shielding effect is 45-60dB, but the coating structure of the coating is single, and the shielding index is low.

Method used

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  • Novel composite electromagnetic shielding latex paint and preparation thereof
  • Novel composite electromagnetic shielding latex paint and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The technological process and process parameters of the present embodiment are as follows:

[0043] 1. Ingredients

[0044] The formula (parts by weight) of the conductive layer coating is as follows:

[0045] Pure acrylate copolymer emulsion 50 parts

[0046] 30 parts of conductive nickel powder with a particle size of micron and a purity of more than 99.7%

[0047] Ethylene glycol butyl ether acetate 3 parts

[0048] 1.5 parts of hydroxyethyl cellulose

[0049] Inorganic bentonite 1.5 parts

[0050] 14 parts of purified water

[0051] The formula (parts by weight) of insulating interlayer paint is as follows:

[0052] Pure acrylate copolymer emulsion 90 parts

[0053] Ethylene glycol butyl ether acetate 4 parts

[0054] 1 part hydroxyethyl cellulose

[0055] 5 parts purified water

[0056] 2. Preparation of coating

[0057] (1) Preparation of the conductive layer part

[0058] Dry the originally prepared micron-sized nickel powder at a drying temperature of ...

Embodiment 2

[0065] The technological process and process parameters of the present embodiment are as follows:

[0066] 1. Ingredients

[0067] The formula (parts by weight) of the conductive layer coating is as follows:

[0068] Styrene-acrylate copolymer emulsion 55 parts

[0069] Micron-sized conductive nickel powder 30 parts

[0070] Ethylene glycol butyl ether acetate 3 parts

[0071] Hydroxyethyl cellulose 0.5 parts

[0072] Inorganic bentonite 1.5 parts

[0073] 10 parts of purified water

[0074] The formula (parts by weight) of insulating interlayer paint is as follows:

[0075] Styrene-acrylate copolymer emulsion 90 parts

[0076] Ethylene glycol butyl ether acetate 3 parts

[0077] 31 parts of hydroxyethyl cellulose

[0078] 7 parts purified water

[0079] 2. Preparation of coating

[0080] (1) Preparation of the conductive layer part

[0081] Dry the originally prepared micron-sized nickel powder at a drying temperature of 70°C, and then mix styrene-acrylate copolym...

Embodiment 3

[0088] The technological process and process parameters of the present embodiment are as follows:

[0089] 1. Ingredients

[0090] The formula (parts by weight) of the conductive layer coating is as follows:

[0091] Pure acrylate copolymer emulsion 45 parts

[0092] Micron nickel powder 35 parts

[0093] 2 parts propylene glycol butyl ether

[0094] Methyl hydroxyethyl cellulose 1.0 parts

[0095] Inorganic bentonite 2 parts

[0096] 15 parts of purified water

[0097] The formula (parts by weight) of insulating interlayer paint is as follows:

[0098] Styrene-acrylate copolymer emulsion 91 parts

[0099] 2 parts propylene glycol butyl ether

[0100] 3 parts methyl hydroxyethyl cellulose

[0101] 5 parts purified water

[0102] 2. Preparation of coating

[0103] (1) Preparation of the conductive layer part

[0104] 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 present invention is an electromagnetic wave shielding in the field of coating. It is an electromagnetic shielding latex coating and preparation method with a new composite structure. Background technique [0002] With the rapid development of electronic technology and information technology, electrical electronics equipment has been widely used.These electronic devices are always radiating electromagnetic waves of different frequencies and energy to space, making the energy and density of electromagnetic waves in the space increase.This not only interferes with the normal work of other electronic devices, cause electromagnetic leakage, but also endangers human health.Electromagnetic pollution has become the fourth largest public harm to threaten human survival after noise pollution, air pollution, and water pollution.In order to curb the increasing electromagnetic pollution, improve people's living environment, and improve the shielding effectiveness ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B13/04B32B27/20C09D133/08
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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