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A high-performance radar composite wave-absorbing coating material and its preparation method
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An absorbing coating and high-performance technology, applied in the field of absorbing materials, can solve problems such as poor absorbing loss performance, and achieve the effects of enhancing impedance matching, increasing microwave loss capability, and increasing microwave absorption efficiency
Active Publication Date: 2022-03-04
JIMEI UNIV
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[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;
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Embodiment 1
[0036] The coating structure is a two-layer wave-absorbing coating. 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] Among them, the thickness of the bottom layer is 2mm, and the thickness of the surface layer is 0.6mm.
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 a two-layer wave-absorbing coating. 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 to undergo surface treatment, and its treatment method includes the following steps:
[0049] Step a. After mixing the ferrite powder with water and ball milling beads in a mass ratio of 1:2:1.5, put it into a ball milling tank, perform wet ball milling at a constant speed of 500 r / min for 2.5 hours, take it out and dry it to obtain Ferrite powder with uniform par...
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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. Among them, the coating structure is two-layer wave-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. Surface layer; each layer of coating includes the following components: epoxy resin, organic solvent, absorber and curing agent; when there are two layers of absorber coatings, the absorber at the bottom layer is magnetic loss type, and the absorber at the surface The absorber is electric loss type, and the thickness ratio of the bottom layer and the surface layer is 3-3.5:1; when it is a three-layer wave absorbing coating, the wave absorbers of the bottom layer and the surface layer are both electric loss type, and the wave absorber of the middle layer is magnetic loss type , the thickness ratio of bottom layer, middle layer and surface layer is 1:(1.6‑1.7):1. By setting up a two-layer or three-layer coating structure, different types of absorbing materials are selected for different coatings, so that its absorbing performance is higher than that of a single-layer coating, and has the advantages of light weight, high-efficiency absorbing, and broadband absorbing.
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, and the issue of electromagnetic radiation and the concealment of weapons and equipment has received great attention. The main means of capturing information and target detection are the environmental and health safety issues related to 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. The radar echo intensity is weakened by reducing the radar signal reflected by the target; the second is the use of radar a...
Claims
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Application Information
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