Radar-infrared multi-spectrum compatible stealth composite material and preparation method thereof

By using a double-layer structure and laser etching cycle pattern in radar-infrared multi-spectrum compatible stealth composite materials, the problem of difficulty in achieving radar and infrared stealth effects simultaneously in the prior art is solved, and a more efficient multi-spectrum stealth effect is achieved.

CN119682328AActive Publication Date: 2025-03-25DONGHUA UNIV
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Patent Information

Application Number
CN202510201697.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2025-03-25
Estimated Expiration
2045-02-24

AI Technical Summary

Technical Problem

The prior art is difficult to achieve strong absorption in the radar band and low emission in the infrared band at the same time, resulting in poor multi-spectrum stealth effect.

Method used

The radar-infrared multi-spectrum compatible stealth composite material with a double-layer structure, the upper layer is an infrared shielding reflective layer with a periodic pattern of laser etching, and the lower layer is a wave absorbing heat insulation layer. By redesigning the shape of the periodic unit and adjusting the periodic unit size and laser etching gap, the radar wave transmittance and reduce the infrared emissivity.

Benefits of technology

It achieves the reduction of infrared transmittance while increasing the radar wave transmittance, improving the multi-spectral stealth effect of the material.

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Abstract

The invention belongs to the technical field of stealth materials, and relates to a radar-infrared compatible stealth composite material and a preparation method thereof, after an infrared shielding reflecting layer and a wave-absorbing heat-insulating layer with laser etching patterns are prepared respectively, the infrared shielding reflecting layer and the wave-absorbing heat-insulating layer are assembled together through glue, and the radar-infrared compatible stealth composite material with a double-layer structure is obtained. According to the invention, the shape of the periodic unit is redesigned, and the periodic unit is matched with the size of the periodic unit and the laser etching gap, so that the infrared emissivity is further reduced while the radar wave transmissivity is further improved. Furthermore, the aerogel is adopted as a wave-absorbing and heat-insulating layer of the composite material, the low heat conductivity coefficient of the aerogel can effectively prevent heat transfer, the upper surface temperature of the material is remarkably reduced, infrared signal radiation is inhibited, the infrared stealth effect of the composite material is improved, meanwhile, the function of attenuating radar waves transmitted from the top layer is achieved, and the infrared stealth effect of the composite material is improved. And efficient radar-infrared compatible stealth performance is realized.
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