Microwave Absorbing Performances of Silica Matrix Composites Reinforced by Carbon Nanotubes and Carbon Fiber

Authors

  • Huamin Kou,

    Corresponding author
    • State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China
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  • Yong Zhu,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China
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  • Mingxia Chen,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China
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  • Yanping Zeng,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China
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  • Yubai Pan,

    Corresponding author
    • State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China
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  • Jingkun Guo

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People's Republic of China
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huaminkou@mail.sic.ac.cn; ybpan@mail.sic.ac.cn

Abstract

Multilayered composites consisting of silica, carbon nanotubes (CNTs), and continuous carbon fibers (Cf) were prepared by hot-pressing technique. Microstructures of different layer presented few pores of the composites. The thermal stability of the composites was analyzed by TG/DTA measurement. After being heat treated at 400°C for 10 h, the composites retained the equivalent shielding property compared to room temperature, and the impedance matching property at material/wave interface was improved slightly. The multilayer CNTs/Cf/silica composites have not only the excellent absorbing properties but also the outstanding thermal stability, and it can be a promising candidate for high-temperature electromagnetic interference shielding applications.

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