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Author(s):: CHENG Jinbo; ZHAO Haibo; LI Mengen; LI Shuliang; WANG Yuzhong; (Collaborative Innovation Center for EcoFriendly and FireSafety Polymeric Materials(MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory for EcoFriendly Polymer Materials(Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China)

Keywords:: carbon-based composites; microwave absorption materials; reflection loss; impedance matching

Abstract:: With the rapid development of microwave technology, microwave absorption materials (MAMs) are playing a more important role in electronic reliability, healthcare, national defense security. High performance MAMs with thin thickness, low density, wide microwave absorption bandwidth and strong absorption have attracted researchers-great interests. Recently, owing to their low density, high specific surface area, strong dielectric loss and high electronic conductivity, carbon-based materials have been gradually developed into a kind of high-performance MAMs. Firstly, the mechanism of microwave absorption was briefly described. And the research progress on carbon-based MAMs, including reduced graphene oxide(RGO) based composites, carbon nanotubes based composites and porous carbon based composites, was reviewed. Furthermore, the methods of improving the microwave absorbing performance for carbon-based materials were discussed and analyzed. It is mainly around the critical factors which have influence on microwave absorbing performance by regulating electromagnetic parameters, improving impedance matching and establishing various loss mechanisms. Moreover, the shortcomings, challenges, and prospects of carbon-based MAMs were also put forward, which laid the foundation for developing researches in related fields.