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A high -temperature -resistant radar suction material and preparation method based on double -layer super materials

A technology of radar absorbing materials and metamaterials, applied in antennas, printing, electrical components, etc., can solve problems such as poor designability, narrow absorbing frequency band, and difficult implementation, and achieve simple structure, stable performance, and easy acquisition Effect

Active Publication Date: 2019-10-29
NAT UNIV OF DEFENSE TECH +1
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  • Application Information

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Problems solved by technology

Aiming at the problems of complex structure, narrow absorbing frequency band, poor designability and difficult realization of the currently developed high-temperature-resistant absorbing materials, a structure and preparation method of high-temperature-resistant radar absorbing materials based on double-layer metamaterials were proposed. Aim to design and prepare a high-temperature-resistant radar absorbing material with strong designability, broadband absorbing, simple structure and easy realization

Method used

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  • A high -temperature -resistant radar suction material and preparation method based on double -layer super materials
  • A high -temperature -resistant radar suction material and preparation method based on double -layer super materials
  • A high -temperature -resistant radar suction material and preparation method based on double -layer super materials

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Embodiment 1

[0048] like figure 1 As mentioned above, the high-temperature-resistant radar absorbing material of this embodiment sequentially includes an inner dielectric layer 1, an inner resistive high-temperature metamaterial layer 2, an intermediate dielectric layer 3, an outer resistive high-temperature metamaterial layer 4, Outer dielectric layer 5.

[0049] Among them, the three dielectric layers are all made of continuous aluminosilicate fiber-reinforced mullite composite materials; the inner resistive high-temperature metamaterial layer 2 and the outer resistive high-temperature metamaterial layer 4 both include the electric phase substance RuO 2 Powder, glass powder, and organic carrier are prepared, wherein, in the inner resistance type high-temperature metamaterial layer 2, glass powder and RuO 2 The mass ratio of powder is 48:52, according to the mass of organic carrier, it is glass powder and RuO 2 25% of the sum of the powder mass is prepared, and the organic vehicle in th...

Embodiment 2

[0062] like figure 1 As mentioned above, the high-temperature-resistant radar absorbing material of this embodiment includes an inner dielectric layer 1, an inner resistive high-temperature metamaterial layer 2, an intermediate dielectric layer 3, an outer resistive high-temperature metamaterial layer 4, and an outer resistive high-temperature metamaterial layer from the inside to the outside. Layer Dielectric Layer 5.

[0063] Among them, the three dielectric layers are all made of continuous aluminosilicate fiber reinforced mullite composite materials; the inner resistive high-temperature metamaterial layer 2 and the outer resistive high-temperature metamaterial layer 4 are composed of conductive phase materials lead ruthenate, Glass powder and organic carrier are prepared, wherein, in the inner resistance type high-temperature metamaterial layer 2, the mass ratio of glass powder and lead ruthenate powder is 49:51, and the mass ratio of glass powder and lead ruthenate powder...

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Abstract

The invention discloses a high temperature resistant radar wave absorption material based on double-layer metamaterials. The high temperature resistant radar wave absorption material comprises, from inside to outside, an inner dielectric layer, an inner layer resistance type high temperature metamaterial layer, an intermediate dielectric layer material layer, an outer layer resistance type high temperature metamaterial layer, and an outer layer dielectric layer sequentially. The resistance type high temperature metamaterial layer comprises conductive phase substances and glass base materials. The inner dielectric layer, the intermediate dielectric layer material layer, and the outer layer dielectric layer adopt continuous oxide fiber reinforcement oxide composite materials. In order to satisfy the electric performance design requirement of the resistance type high temperature metamaterials, the mass ratios of the conductive phase substances and the glass base materials of the resistance type high temperature metamaterials are in a range from 30:70 to 70:30. The high temperature resistant radar wave absorption material is advantageous in that strong designability is provided, and a structure is simple; by adopting a double metamaterial technology, broadband wave absorption performance is realized.

Description

technical field [0001] The invention mainly relates to the field of high-temperature-resistant stealth materials, in particular to a high-temperature-resistant radar wave-absorbing material based on metamaterials and a preparation method thereof. Background technique [0002] Radar absorbing materials can be divided into normal temperature (operating temperature below 200°C) and high temperature according to the service temperature zone. In contrast, the current research on normal-temperature radar absorbing materials is relatively mature, while the research on high-temperature radar absorbing materials is still in active exploration. [0003] The structures and preparation methods of several high-temperature-resistant microwave-absorbing materials have been publicly reported. Chinese patent No. ZL201110052115.1 discloses a three-layer silicon carbide composite material absorbing ceramic and its preparation method. The reported silicon carbide composite material absorbing c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00C03C12/00B41M1/12
CPCB41M1/12C03C12/00H01Q17/00
Inventor 刘海韬郝璐戴全辉杨晓树黄文质姜如
Owner NAT UNIV OF DEFENSE TECH
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