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High-temperature-resistant weather-resistant anti-corrosion electromagnetic shielding coating

An electromagnetic shielding coating, high temperature and weather resistance technology, used in anti-corrosion coatings, fire-resistant coatings, conductive coatings, etc., can solve problems such as poor adhesion and easy corrosion, and achieve high adhesion, good wear resistance, stable electromagnetic The effect of shielding performance

Pending Publication Date: 2022-01-04
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-temperature and weather-resistant anti-corrosion electromagnetic shielding coating and its preparation method, so as to meet the requirements of shielding efficiency in a wide frequency range, and solve the problem of poor adhesion of the coating in a high-temperature ablation environment and easy corrosion in a high-humidity and high-salt spray environment The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A high-temperature and weather-resistant anti-corrosion electromagnetic shielding coating, the components are conductive filler, phenolic epoxy resin, ethyl acetate solvent, diaminodiphenylmethane curing agent and KH650 coupling agent;

[0042] The mass ratio thereof is: 40% of nanometer silver, 12% of novolac epoxy resin, 43% of ethyl acetate solvent, 4% of diaminodiphenylmethane and 1% of KH650 coupling agent.

[0043] Its preparation steps are:

[0044] The first step is to weigh the five components of 40% nano silver, 12% novolac epoxy resin, 43% ethyl acetate solvent, 4% diaminodiphenylmethane, and 1% KH650 coupling agent according to the mass ratio;

[0045] In the second step, pour nano-silver and phenolic epoxy resin into ethyl acetate solvent and stir evenly with a disperser;

[0046] In the third step, add diaminodiphenylmethane and mix well;

[0047] The fourth step is to filter the paint with a 100-mesh sieve to remove lumpy flocs;

[0048] The fifth step...

Embodiment 2

[0052] A high temperature and weather resistance anti-corrosion electromagnetic shielding coating, the composition is conductive filler, phenolic epoxy resin, ethyl acetate solvent, diaminodibenzyl ether curing agent, and its mass ratio is 40% of nano-nickel, 12% of phenolic epoxy resin , ethyl acetate solvent 43%, diaminodibenzyl ether curing agent 4%, KH650 coupling agent 1%.

[0053] Its preparation steps are:

[0054] In the first step, five components including 40% nano-nickel, 12% novolac epoxy resin, 43% ethyl acetate solvent, diaminodibenzyl ether curing agent and KH650 coupling agent are weighed according to the mass ratio.

[0055] In the second step, pour nano-nickel and novolac epoxy resin into ethyl acetate solvent and stir evenly with a disperser.

[0056] The third step is to add diaminodibenzyl ether curing agent and mix well;

[0057] The fourth step is to filter the paint with a 100-mesh sieve to remove lumpy flocs;

[0058] Step 5: Stir evenly and let sta...

Embodiment 3

[0062] A high-temperature and weather-resistant anti-corrosion electromagnetic shielding coating is composed of nano-silver, phenolic epoxy resin, propyl acetate solvent, ethylenediamine and KH650 coupling agent;

[0063] Its mass ratio is 40% of nano silver, 12% of novolac epoxy resin, 43% of butanediol solvent, 4% of ethylenediamine, and 1% of KH650 coupling agent.

[0064] Its preparation steps are:

[0065] The first step is to weigh according to the mass ratio, five components of nano silver 40%, phenolic epoxy resin 12%, propyl acetate solvent 43%, ethylenediamine and KH650 coupling agent;

[0066] In the second step, pour nano-silver and phenolic epoxy resin into ethyl acetate solvent and stir evenly with a disperser;

[0067] In the third step, add ethylenediamine and mix well.

[0068] The fourth step is to filter the paint.

[0069] Step 5: Stir evenly and let stand for 0.5h before use.

[0070] The sixth step is to wipe the surface of the composite material with...

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Abstract

The invention relates to a high-temperature-resistant weather-resistant anti-corrosion electromagnetic shielding coating which comprises the following components: a metal conductive filler, high-temperature-resistant film-forming resin, an organic solvent, a curing agent and a coupling agent, wherein the mass ratio of all the components is as follows: 38%-45% of the metal conductive filler, 8%-12% of the high-temperature-resistant film-forming resin, 39%-49% of the organic solvent, 4%-8% of the curing agent and 1%-2% of the coupling agent, wherein the high-temperature-resistant film-forming resin is novolac epoxy resin; the curing agent is an aromatic amine curing agent or an aliphatic amine curing agent; the prepared electromagnetic shielding coating is resistant to high temperature, high in flame retardance and high in conductivity. The coating aims to meet the requirement that the adhesive force with the composite material in a 300-DEG C high-temperature environment is greater than 1MPa, the surface is not swelled and is not debonded, and the electromagnetic shielding performance is good.

Description

technical field [0001] The invention relates to a high-temperature-resistant, weather-resistant, anti-corrosion electromagnetic shielding paint, relates to an electromagnetic shielding paint and a preparation method thereof, in particular to a high-temperature-resistant, weather-resistant, anti-corrosion electromagnetic shielding paint and a preparation method thereof. Background technique [0002] The invention provides a very good effect on preventing electromagnetic pollution of the environment and electromagnetic interference of electronic equipment, and providing overall electromagnetic shielding protection for aerospace vehicles. In practice, the present invention has a high shielding effect, and the composite material structure installed at the opening of the cabin body has electrical continuity with its installation location. The composite material has a semi-circular arc surface structure, and the thickness of the inner wall is within the range of 1-1.5mm. It needs ...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D5/10C09D5/24C09D5/18
CPCC09D163/04C09D5/10C09D5/24C09D5/18C08K2201/011C08K2003/0806C08K2003/0862C08K7/00C08K3/08
Inventor 张琪凯秦蓉蓉郝晶莹吴佳奇
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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