High-temperature resistant radar wave-absorbing material based on double-layer metamaterial and preparation method of high-temperature resistant radar wave-absorbing material

Abstract

The invention belongs to the technical field of radar wave-absorbing materials and particularly relates to a high-temperature resistant radar wave-absorbing material based on a double-layer metamaterial and a preparation method of the high-temperature resistant radar wave-absorbing material. The high-temperature resistant radar wave-absorbing material is prepared from an inner dielectric layer, aninner resistor type high-temperature metamaterial layer, a middle dielectric layer, an outer resistor type high-temperature metamaterial layer and an outer dielectric layer in turn from inside to outside, wherein the inner resistor type high-temperature metamaterial layer is prepared from the following raw materials in parts by weight: polyphenylene sulfide, polytetrafluoroethylene, silicon nitride, ferrosoferric oxide, 2-hydroxypropyl acrylate, copper fiber and a lubricant; the outer resistor type high-temperature metamaterial layer is prepared from the following raw materials in parts by weight: polypyrrole, polytetrafluoroethylene, nano zinc oxide, barium lanthanum hexaboride, dimethylaminoethyl acrylate, calcium sulfate, copper fiber and a lubricant. The high-temperature resistant radar wave-absorbing material based on a double-layer metamaterial provided by the invention has the advantages of simple structure, wide wave-absorbing frequency band, strong wave-absorbing ability, lowdensity and high stability.

Description

technical field [0001] The invention relates to the technical field of radar absorbing materials, in particular to a high-temperature-resistant radar absorbing material based on double-layer metamaterials and a preparation method thereof. Background technique [0002] With the development of advanced military detection technology, as a radar stealth technology that reduces the signal characteristics of aircraft, missiles, ships and tanks and other large weapons and equipment, it has very important military significance for improving the survival and penetration capabilities of weapons on the battlefield. Absorbing materials can convert electromagnetic wave energy into heat energy and attenuate radar waves, which is an important means to achieve target radar stealth. Absorbing materials must have the characteristics of thin thickness, light weight, wide absorption frequency, and strong absorption capacity. Some special occasions must meet more stringent requirements, such as ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that silicon carbide fibers with different resistivities are added to high-temperature resistant wave-absorbing materials in the prior art, resulting in increased production difficulty, high production cost, and high process requirements. High temperature resistant radar absorbing material based on double-layer metamaterial and preparation method thereof

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