Heat preventing and insulating stealth compound material with broad-band wave absorption and preparation method thereof

Abstract

The invention discloses a heat preventing and insulating stealth compound material with broad-band wave absorption and a preparation method thereof. The compound material comprises a cold-faced panel,a first aerogel compound material heat-insulating layer, a first resistance high-temperature super-material layer, a second aerogel compound material heat-insulating layer, a second resistance high-temperature super-material layer, a third aerogel compound material heat-insulating layer and a hot-faced panel from inside to outside sequentially. In the aspect of heat preventing and insulating performance, compared with existing heat insulating tiles and cover plate type heat prevention systems, the integrated heat preventing and insulating stealth compound material has the advantages of good heat insulating performance, excellent mechanical performance, large component preparation availability, high reliability, easiness in maintenance and the like; and in the aspect of stealth performance, the technical scheme adopting the high temperature super-material has the advantages of strong designability and easiness in broad-band wave absorption implementation, weight gain is hardly generated in comparison with the technical scheme of a cold-faced by adopting a wave absorbing material, absorbent is not required to be added into a heat preventing and insulating material, the heat preventing and insulating performance is not influenced, and the material has good uniformity and strong controllability.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a broadband wave-absorbing anti-heat-insulation stealth composite material and a preparation method thereof. Background technique [0002] A high-speed aircraft flies in the atmosphere for a long time, and the aerodynamic heat makes the surface temperature of the aircraft body reach hundreds or even 1000°C. essential component that is missing. TPS must have good heat protection function to maintain the aerodynamic shape of the aircraft; at the same time, it must have excellent heat insulation performance to ensure that the electronic equipment and fuel tanks of the aircraft can work normally. Ceramic insulation tiles are the longest-developed and relatively mature TPS, but their inherent brittleness, low strength, high thermal conductivity, and difficulty in manufacturing large-scale components are difficult to adapt to the high efficiency and high efficiency of TPS for futu...

AI Technical Summary

Problems solved by technology

[0006] The anti-heat insulation and stealth composite material of the present invention is composed of 7 functional layers, wherein the cold surface panel itself has good strength, and is mainly used for bonding with the metal of the aircraft body to solve the problem of the heat insulation layer of the airgel composite material. The problem of poor strength and adhesiveness and the inability to achieve effective bonding with the metal body of the aircraft; the first airgel composite heat insulation layer, the second airgel composite heat insulation layer and the third airgel The composite heat insulation layer mainly provides heat insulation function, and at the same time utilizes its excellent dielectric properties to provide electrical thickness design space for stealth function design; the first resistive high-temperature metamaterial layer and the second resistive high-temperature metamaterial layer mainly provide Broad-band wave-absorbing function, the hot surface panel mainly provides heat-proof performance and excellent mechanical properties, and the above components are combined to form an integrated anti-heat insulation and stealth composite material

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