The invention discloses an astronavigation-level terahertz stealth thermal control film and a preparation method thereof, and relates to the field of spacecraft functional materials, the stealth thermal control film comprises an ITO resonance layer, a base material layer and a reflecting layer which are arranged from outside to inside, the base material layer is a polymer flexible film (such as PI or P46), the reflecting layer is a metal coating (such as aluminum and silver), and the ITO resonance layer, the base material layer and the reflecting layer are arranged from outside to inside. And the ITO resonance layer is an ITO array with a hollow pattern. The preparation method comprises the following steps: plating a metal reflecting layer on one surface of a base material layer, pasting a proper mask on the other surface of the base material layer, carrying out resonance layer coating treatment, cutting, and removing the mask to obtain the invisible thermal control film. The thin film is simple and reasonable in structure, thin in thickness and wide in wave absorbing frequency band, the flexible thin film is suitable for large-area manufacturing, the surface of a satellite structure is flexibly wrapped with the thin film, the sealing edge with holes is arranged, the thin film has excellent thermal control performance, meanwhile, the surface radar scattering cross section can be effectively reduced, and the thin film can be widely applied to the fields of spacecraft terahertz radar stealth, electromagnetic shielding, electromagnetic protection and the like.
本发明公开了一种宇航级太赫兹隐身热控薄膜及其制备方法,涉及航天器功能材料领域,所述隐身热控薄膜包括从外至内设置的ITO谐振层、基材层和反射层,所述基材层为聚合物柔性薄膜(比如PI或P46),所述反射层为金属镀层(比如铝、银),所述ITO谐振层为具有镂空图案的ITO阵列。通过先在基材层的一面镀金属反射层,再在基材层另一面粘贴合适的掩模后进行谐振层镀膜处理,接着进行切割、揭除掩膜得到隐身热控薄膜。该薄膜的结构简单合理,厚度薄,吸波频带宽,柔性薄膜适合大面积制造、灵活包覆于卫星结构表面,并设置带孔的封边,具备优异的热控性能,同时能有效缩减表面雷达散射截面,可广泛应用于航天器太赫兹雷达隐身、电磁屏蔽、电磁防护等领域。
Astronavigation-level terahertz stealth thermal control film and preparation method thereof
一种宇航级太赫兹隐身热控薄膜及其制备方法
04.04.2025
Patent
Elektronische Ressource
Chinesisch
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