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High-performance radar composite wave-absorbing coating material and preparation method thereof

A technology of wave absorbing coating and wave absorbing material, applied in the field of wave absorbing material, can solve problems such as poor wave absorbing loss performance, and achieve the effects of enhancing impedance matching, increasing microwave loss ability, and increasing microwave absorption efficiency

Active Publication Date: 2020-12-04
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor absorbing loss performance of the existing single type of absorbing material mentioned in the background technology, the present invention provides a high-performance radar composite absorbing coating material, wherein the coating structure is a two-layer absorbing coating or three-layer wave-absorbing coating; the two-layer wave-absorbing coating is the bottom layer and the surface layer from the inside to the outside; the three-layer wave-absorbing coating is the bottom layer, the middle layer and the surface layer from the inside to the outside;

Method used

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  • High-performance radar composite wave-absorbing coating material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] The coating structure is two layers of wave-absorbing coatings. In parts by weight, the bottom layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 70 parts of ferrite and 5 parts of curing agent containing multiple amide groups ;

[0037] The surface layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 1 part of graphene and 5 parts of curing agent containing multiple amide groups;

[0038] Wherein, the thickness of the bottom layer is 2 mm, and the thickness of the surface layer is 0.6 mm.

Embodiment 2

[0040] The coating structure is a three-layer wave-absorbing coating. In parts by weight, the bottom layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 1 part of graphene and 5 parts of curing agent containing multiple amide groups;

[0041] The middle layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 70 parts of ferrite and 5 parts of curing agent containing multiple amide groups;

[0042]The surface layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 1 part of graphene and 5 parts of curing agent containing multiple amide groups;

[0043] Among them, the thickness of the bottom layer is 0.6mm, the thickness of the middle layer is 1.0mm, and the thickness of the surface layer is 0.6mm.

Embodiment 3

[0045] The coating structure is two layers of wave-absorbing coatings. In parts by weight, the bottom layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 70 parts of ferrite and 5 parts of curing agent containing multiple amide groups ;

[0046] The surface layer includes 100 parts of epoxy resin, 40 parts of organic solvent compounded with toluene and alcohol, 1 part of graphene and 5 parts of curing agent containing multiple amide groups;

[0047] Among them, the thickness of the bottom layer is 2mm, and the thickness of the surface layer is 0.6mm;

[0048] Ferrite needs surface treatment, and its treatment method comprises the following steps:

[0049] Step a, mix the ferrite powder with water and ball milling beads at a mass ratio of 1:2:1.5, put them into a ball milling tank, and wet ball mill them at a constant speed of 500r / min for 2.5h, take them out and dry them to obtain Ferrite powder with uniform particle size...

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Abstract

The invention relates to the technical field of wave-absorbing materials, in particular to a high-performance radar composite wave-absorbing coating material and a preparation method thereof. Whereinthe coating structure is two-layer wave-absorbing coatings or three-layer wave-absorbing coatings; the two wave-absorbing coatings are a bottom layer and a surface layer in sequence from inside to outside; the three-layer wave-absorbing coatings are a bottom layer, a middle layer and a surface layer in sequence from inside to outside; each layer of coating comprises the following components: epoxyresin, an organic solvent, a wave absorbing agent and a curing agent; when the two-layer wave-absorbing coatings are adopted, the wave-absorbing agent on the bottom layer is in a magnetic loss type,the wave-absorbing agent on the surface layer is in an electric loss type, and the thickness ratio of the bottom layer to the surface layer is 3-3.5: 1; when the three-layer wave-absorbing coatings are adopted, the wave-absorbing agents of the bottom layer and the surface layer are both in an electric loss type, the wave-absorbing agent of the middle layer is in a magnetic loss type, and the thickness ratio of the bottom layer to the middle layer to the surface layer is 1: (1.6-1.7): 1. By arranging a two-layer or three-layer coating structure, different coatings are made of different types ofwave-absorbing materials, so that the wave-absorbing performance of the wave-absorbing material is higher than that of a single-layer coating, and the wave-absorbing material has the advantages of light weight, efficient wave absorption and broadband wave absorption.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing materials, in particular to a high-performance radar composite wave-absorbing coating material and a preparation method thereof. Background technique [0002] With the rapid development of information technology and the ever-changing war environment, the emergence of stealth technology has had a profound impact on modern weapons and equipment. Electromagnetic radiation and the concealment of weapons and equipment have received high attention. The main means of capturing information and target detection is related to the environment and health and safety issues of the country and even human life. [0003] In modern radar stealth technology, the radar echo intensity is mainly reduced by the following means, that is, the Radar Cross Section (RCS) is reduced: first, the external shape of combat weapons and equipment such as aircraft, tanks, and ships is improved, By reducing the radar signal r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/32C09D7/20C09K3/00H05K9/00
CPCC09D163/00C09D5/32C09D7/20C09K3/00H05K9/00C08K2003/2265C08K2201/011C08K3/042C08K9/06C08K3/22
Inventor 张贤慧燕佳欣吴建华
Owner JIMEI UNIV