Absorbing Property of Multi-layered Short Carbon Fiber Absorbing Coating

Authors : Zhaohui LİU, Rui TAO, Guodong BAN, Ping LUO

Pages : 29-37

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Publication Date : 2017-09-20

Article Type : Research Paper

Abstract :The radar absorbing coating was prepared with short carbon fiber as absorbent and  waterborne   polyurethane insert ignore into journalissuearticles values(WPU); as matrix   resin . The coating’s absorbing property was tested with vector network analyzer, using aramid honeycomb as air layer which was matched with carbon fiber coating. The results demonstrate that the single-layered carbon fiber absorbing coating presented relatively poor absorbing property when the layer was thin, and the performance was slightly improved after the matched air layer was adopted. Then the multi-layered carbon fiber absorbing coating was produced by matching the air layer with absorbing coating of varied carbon fiber content. Consequently, the absorption   intensity and the band width of effective absorption were significantly enhanced. According to varied matching methods between carbon fiber coating and air layer, the composite coating’s reflectivity reached a minimum of -23dB, and the reflectivity was less than -10dB within the range of 4-13GHz, the band width of effective absorption reached 9GHz.
Keywords : short carbon fiber, absorbing coating, multi layered, absorbing property