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Light-color antistatic coating with high electromagnetic wave transmissivity and preparation method thereof

An anti-static coating and electromagnetic wave technology, applied in the direction of conductive coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of decreased wave transmittance, increased dielectric constant, poor aging resistance of paint films, etc., to achieve coating The effect of excellent film quality, low dielectric constant and excellent adhesion

Inactive Publication Date: 2011-07-20
NO 91872 TROOPS PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coatings with conductive carbon black as pigment and filler can only be made into black or dark-colored paints, and cannot be made into light-colored paints. For the radome that needs light-colored decoration, it cannot meet the color requirements
The coating with conductive mica powder as the main conductive filler can be made into light-colored paint, but the aging resistance of the paint film is poor, and titanium dioxide with a high dielectric constant must be added, resulting in an increase in the dielectric constant and a decrease in the wave transmittance.
[0006] Looking at the varieties of anti-static coatings in China, there are no anti-static coatings that are light-colored, fast-drying, good on-site construction effect, excellent aging resistance, and high wave transmittance developed for on-site construction requirements.

Method used

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  • Light-color antistatic coating with high electromagnetic wave transmissivity and preparation method thereof

Examples

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Effect test

Embodiment 1

[0046] This embodiment provides a light-colored two-component antistatic coating with high electromagnetic wave transmittance, wherein, component A is mainly composed of hydroxyl fluorocarbon resin and composite conductive powder with a fluorine content of 35%, and has the following components Composition (unless otherwise stated, all ingredients are commercially available):

[0047] Hydroxyfluorocarbon resin (hydroxyl value 65mgKOH): 52 grams;

[0048] Mixed solvent (the weight ratio of xylene, butyl acetate, ethylene glycol ethyl ether acetate and propylene glycol methyl ether acetate is 1: 0.4: 0.2: 0.1): 15 grams;

[0049] Composite conductive powder (the weight ratio of conductive mica powder and conductive titanium dioxide is 1:0.5): 35 grams;

[0050] Dispersant (the molecular weight is the ethylene glycol ethyl ether acetate solution of the high molecular weight block copolymer containing amino group of 50000-80000, concentration is 45wt%): 0.1 gram;

[0051] Conduct...

Embodiment 2

[0059] This embodiment provides a light-colored two-component antistatic coating with high electromagnetic wave transmittance, wherein, component A is mainly composed of hydroxyfluorocarbon resin and composite conductive powder with a fluorine content of 24%, and has the following components Composition (unless otherwise stated, all ingredients are commercially available):

[0060] Hydroxyfluorocarbon resin (hydroxyl value 55mgKOH, solid fluorine content 24%): 65 grams;

[0061] Mixed solvent (the weight ratio of xylene, butyl acetate, ethylene glycol ethyl ether acetate and propylene glycol methyl ether acetate is 1: 0.4: 0.2: 0.1): 12 grams;

[0062] Composite conductive powder (the weight ratio of conductive mica powder and conductive titanium dioxide is 1:0.5): 35 grams;

[0063] Dispersant (ethylene glycol ether acetate solution of high molecular weight (molecular weight is 50000-80000) block copolymer containing amino group, concentration is 45wt%): 0.1 gram;

[0064] ...

Embodiment 3

[0072] This embodiment provides a light-colored two-component antistatic coating with high electromagnetic wave transmittance, wherein, component A is mainly composed of hydroxyl fluorocarbon resin and composite conductive powder with a fluorine content of 35%, and has the following components Composition (unless otherwise stated, all ingredients are commercially available):

[0073] Hydroxyfluorocarbon resin (hydroxyl value 65mgKOH, solid fluorine content 35%): 55 grams;

[0074] Mixed solvent (the weight ratio of xylene, butyl acetate, ethylene glycol ethyl ether acetate and propylene glycol methyl ether acetate is 1: 0.4: 0.2: 0.1): 16 grams;

[0075] Composite conductive powder (the weight ratio of conductive mica powder and conductive titanium dioxide is 1:0.8): 45 grams;

[0076] Dispersant (molecular weight is the ethylene glycol ethyl ether acetate solution of the high molecular weight block copolymer containing amino group of 50000-80000, concentration is 45wt%): 0.2...

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Abstract

The invention relates to a light-color antistatic coating with high electromagnetic wave transmissivity and a preparation method thereof and provides a light-color bi-component antistatic coating with high electromagnetic wave transmissivity, which consists of a component A and a component B in the weight ratio of 100:(8-10). The component A comprises the following components in parts by weight: 30-70 parts of hydroxyl fluorocarbon resin, 5-25 parts of mixed solvent, 30-70 parts of composite conductive powder, 0.5-1.5 parts of conductivity accelerator, 0.1-0.3 part of dispersant, 0.1-0.4 part of antifoaming agent, 0.5-1.5 parts of delustering agent, 0.5-1.5 parts of ultraviolet absorbent and 0.5-1.5 parts of catalyst. The component B comprises the following components in parts by weight: 70-80 parts of hexane diisocyanate tripolymer resin and 20-30 parts of propylene glycol methyl ether acetate. The invention also provides a preparation method of the coating. The light-color bi-component antistatic coating provided by the invention has the advantages of excellent field construction effect, contribution to improvement on coating quality of an antenna housing, low dielectric constant, high wave transmissivity, aging resistance, salt fog resistance, humidity resistance and the like.

Description

technical field [0001] The invention relates to an antistatic paint and a preparation method thereof, in particular to a light-colored antistatic paint with high electromagnetic wave transmittance and a preparation method thereof, belonging to the technical field of paint preparation. Background technique [0002] Radar is one of the most important remote detection equipment in the contemporary era. As a highly integrated precision equipment such as light, mechanics, electricity, electronics and software, it has high requirements for environmental humidity, temperature, and air purification. The radome forms an enclosure to control environmental parameters. [0003] In order not to affect the performance of the radar antenna, the radome has been carefully designed, manufactured and tested to ensure that the electrical performance parameters such as the transmission rate are perfectly matched with the radar. Therefore, the maintenance level of the radome becomes one of the im...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/24C08G18/62
Inventor 张赞孟宪林康新征张海永俞翔
Owner NO 91872 TROOPS PLA
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