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Graphene containing infrared radar compatible stealth coating and preparation method thereof

A stealth coating and graphene technology, applied in radiation-absorbing coatings, conductive coatings, reflection/signal coatings, etc., can solve problems that have not entered the practical stage, achieve the effect of improving conductivity and broad prospects

Inactive Publication Date: 2019-07-26
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are reports that the infrared emissivity of coatings reaches below 0.5, none of them have entered the practical stage.

Method used

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  • Graphene containing infrared radar compatible stealth coating and preparation method thereof
  • Graphene containing infrared radar compatible stealth coating and preparation method thereof
  • Graphene containing infrared radar compatible stealth coating and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0026] The preparation method of infrared radar compatible stealth coating of the present invention is,

[0027] 1. Accurately weigh graphene, magnetic absorbent and other required pigments and fillers, place them in dry and clean trays, and put them in an electric oven with a temperature of 105±2°C for drying. The drying time is 4 hours. After cooling naturally, pack them into bags and seal them for later use.

[0028] 2. Add fluorocarbon resin, dispersant and defoamer to the barrel, and add part of the solvent. After mixing evenly, add graphene, and then use a disperser to stir at a low speed for 15 minutes to disperse evenly, and then according to the first light and then heavy, first less and then Add magnetic absorbent, aluminum paste and other pigments and fillers in principle, increase the speed to 1200-1500 r / min, stir at high speed and disperse evenly, then add solvent to adjust viscosity.

Embodiment 1

[0030] In parts by weight, 42 parts of fluorocarbon resin, 20 parts of aluminum powder paste, 12 parts of ferrite, 2 parts of graphene, 2 parts of dispersant, 1 part of defoamer, and 20 parts of solvent are taken. Add fluorocarbon resin, dispersant and defoamer into the barrel, then add 14 parts of solvent, mix well and add graphene. After stirring at a low speed with a disperser for 15 minutes, add ferrite and aluminum powder slurry in turn, increase the speed of the dispersant to 1300 r / min and stir at a high speed for 30 minutes, after the dispersion is uniform, add the remaining 6 parts of solvent to adjust the viscosity.

[0031] The infrared radar compatible stealth coating will be made, and the finished coating will be coated on the surface of the sample by a roller coating process, and the dry film thickness of each coating is 50 μm.

Embodiment 2

[0033] In parts by weight, take 42 parts of fluorocarbon resin, 18 parts of aluminum powder paste, 14 parts of carbonyl iron, 2 parts of graphene, 2 parts of dispersant 6800, 1 part of defoamer BYK110, and 20 parts of solvent. Add fluorocarbon resin, dispersant and defoamer into the barrel, then add 15 parts of solvent, mix well and add graphene. After stirring at a low speed with a disperser for 10 minutes, add ferrite and aluminum powder slurry in sequence, increase the speed of the dispersant to 1200 r / min and stir at a high speed for 25 minutes, after the dispersion is uniform, add the remaining 5 parts of solvent to adjust the viscosity.

[0034] The infrared radar compatible stealth coating will be made, and the finished coating will be coated on the surface of the sample by a roller coating process, and the dry film thickness of each coating is 50 μm.

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Abstract

The invention discloses a graphene containing infrared radar compatible stealth coating and a preparation method thereof. The graphene containing infrared radar compatible stealth coating comprises aresin system formed by mixing of resin, a solvent and an assistant, aluminum powder with conductivity and a radar wave reflection absorbent are dispersed in the resin system, and the radar wave reflection absorbent is composed of graphene with high dielectric constant and a magnetic absorbent. The dielectric properties of graphene are combined with electromagnetic properties of the magnetic absorbent to improve the reflection and absorption properties of the coating from two aspects of dielectric loss and electromagnetic loss, so as to achieve the effect of radar stealth' in addition, the graphene for radar absorption is dispersed among aluminum slurry particles in the resin system, the aluminum slurry particles are connected by the lamellar structure of the resin system to improve the conductivity of the coating, and low infrared emissivity is achieved; the coating can be used in high temperature radiation and radar bright spots of ships and warships, and can also be extended to ground equipment with high temperature position and radar stealth demand.

Description

technical field [0001] The invention relates to a special functional stealth paint, in particular to a graphene-containing infrared radar compatible stealth paint and a preparation method thereof. Background technique [0002] The United States is the first country to carry out research on infrared stealth coatings, and its research and development of infrared stealth coatings has achieved great success. The formula design of stealth paint has put forward some important conclusions, and the research on thermal stealth paint has been carried out in the United States since the early 1970s. In the mid-1970s, as the performance of infrared detectors continued to improve, the U.S. Army accelerated the development of thermal stealth coatings. In the early 1980s, the United States developed a low-emissivity coating that is resistant to thermal surveillance, and used a conductive coating to combine the stealth effects of thermal infrared and radar. The United States proposed to de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12C09D5/32C09D5/33C09D5/24
CPCC08K2003/0812C09D5/004C09D5/24C09D5/32C09D127/12C08K3/08C08K3/042C08K3/18C08K3/22
Inventor 叶志民庄海燕陈翔
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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