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Environment-friendly wave-absorbing coating and preparation method thereof

An environment-friendly, wave-absorbing paint technology, applied in the field of wave-absorbing materials, can solve the problems of polluting the environment, poisonous and harmful wave-absorbing paint, etc., and achieve the effect of improving performance and service life, excellent mechanical properties and environmental tolerance

Active Publication Date: 2019-04-16
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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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 an environmentally friendly wave-absorbing coating, which can solve the problems of poisonous and harmful pollution of traditional wave-absorbing coatings, and it has good mechanical properties and wave-absorbing properties at the same time

Method used

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  • Environment-friendly wave-absorbing coating and preparation method thereof

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preparation example Construction

[0043] An embodiment of the present invention provides a method for preparing an environmentally friendly wave-absorbing coating, comprising the following steps:

[0044] In terms of mass percentage, 7-73% of matrix resin, 9-63% of wave absorbing agent, 0.5-2% of dispersing agent, 0.4-1% of anti-settling agent, and 1-12% of curing agent are put into 4 Stir 1-40mim in 26% solvent at 50-1200r / m and mix evenly; wherein, the solvent is selected from dimethyl carbonate, tert-butyl acetate, dimethyl adipate, dimethyl glutarate, butyl At least one of dimethyl diacid, propylene glycol diacetate, and propylene glycol methyl ether acetate.

[0045] In some optional embodiments, put the matrix resin, dispersant, anti-sedimentation agent, and curing agent into the solvent, stir at 50-1200r / m for 1-40min after mixing evenly, then add wave absorbing agent and continue stirring for 20-40min well mixed. Finally, adding the wave absorbing agent into the solvent and stirring evenly can improv...

Embodiment 1

[0048] The embodiment of the present invention provides an environment-friendly wave-absorbing coating, which is prepared by the following steps:

[0049] Add 300g of epoxy resin, 9.0g of carboxymethylcellulose, 4.5g of polyamide wax, and 150g of solvent (dimethyl carbonate: tert-butyl acetate = 4:1) into the beaker, disperse it with a mixer, and stir Set the rotation speed to 1000rpm; after stirring for 30 minutes, gradually add 756g of carbonyl iron powder wave absorbing agent, and continue stirring for 30 minutes until the wave absorbing agent is added until it is evenly mixed; then add 14.0g of phenalkamine curing agent, and after stirring for 5 minutes, a sprayable absorbing coatings.

[0050] Prepare a 1.0mm coating sample from the above-mentioned prepared coating, observe the appearance of the coating, and follow the GJB2038A-2011 "Radar Absorber Reflectivity Test Method", GB / T 1731-1993 "Paint Film Flexibility Determination Method", respectively GB / T 1732-1993 "Determ...

Embodiment 2

[0052] The embodiment of the present invention provides an environment-friendly wave-absorbing coating, which is prepared by the following steps:

[0053] 503g polyurethane resin, 9.8g polyacrylamide, 6.0g organic bentonite, 220g solvent (dimethyl carbonate: tert-butyl acetate: dimethyl adipate: dimethyl glutarate=3:3:2:2 ) into the beaker, and disperse it with a mixer, and set the stirring speed at 1100rpm; after stirring for 40 minutes, gradually add 422g of sendust wave absorbing agent slowly, and continue stirring for 20 minutes until the wave absorbing agent is added until it is evenly mixed; then add 22g aromatic amine curing agent, after stirring for 3 minutes, a wave-absorbing coating that can be sprayed was obtained.

[0054] Prepare a 1.0mm coating sample from the above-mentioned prepared coating, observe the appearance of the coating, and follow the GJB2038A-2011 "Radar Absorber Reflectivity Test Method", GB / T 1731-1993 "Paint Film Flexibility Determination Method",...

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Abstract

The invention discloses an environment-friendly wave-absorbing coating and a preparation method thereof, and belongs to the field of wave-absorbing materials. The environment-friendly wave-absorbing coating comprises 7-73% of matrix resin, 9-63% of a wave-absorbing agent, 4-26% of a solvent, 0.5-2% of a dispersing agent, 0.4-1% of an anti-settling agent and 1-12% of a curing agent; wherein the solvent is selected from at least one of dimethyl carbonate, tert-butyl acetate, dimethyl adipate, dimethyl glutarate, dimethyl succinate, propylene glycol diacetate and propylene glycol methyl ether acetate. The environment-friendly wave-absorbing coating does not contain benzene, ketone and other solvents with high toxicity, high harm and carcinogenic risk, and has the advantages of environmental friendliness, low toxicity, low harm and no pollution; and a cured coating has good mechanical property and wave-absorbing property. The invention also provides a preparation method of the environment-friendly wave-absorbing coating.

Description

technical field [0001] The invention relates to the field of wave-absorbing materials, in particular to an environment-friendly wave-absorbing coating and a preparation method thereof. Background technique [0002] Absorbing materials have been widely used in military, aviation, aerospace, communications, electromagnetic protection, electromagnetic shielding and other fields. The wave-absorbing coating is a convenient and effective wave-absorbing material, which can absorb and attenuate the incident electromagnetic wave, convert the energy of the electromagnetic wave into heat energy and dissipate it or make the electromagnetic wave disappear due to interference, which is an effective method to reduce the reflection of electromagnetic wave. Because of its many advantages such as simple preparation, convenient use, and low cost, it has become an ideal measure to realize the microwave absorption function. [0003] Existing microwave-absorbing coatings are generally formulated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/32C09D163/00C09D175/04C09D175/02C09D7/20
CPCC08K2003/023C08K2003/0812C08K2003/0856C08K2003/0862C08K2003/2265C09D5/32C09D163/00C09D175/02C09D175/04C09D7/20C08K3/18C08K3/08C08K3/02C08L75/04C08K3/22C08L63/00
Inventor 王建国王浩继龙昌魏凌云
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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