材料科学
纳米复合材料
反射损耗
纳米孔
复合材料
电磁辐射
辐射
吸收(声学)
碳纤维
复合数
纳米技术
光学
物理
作者
Xiang Li,Erbiao Cui,Zhen Xiang,Lunzhou Yu,Juan Xiong,Fei Pan,Wei Lu
标识
DOI:10.1016/j.jallcom.2019.152952
摘要
Electromagnetic (EM) wave absorbing materials have been extensively applied in the electronic devices and wireless communication to solve the increasingly serious problems of electromagnetic pollution and radiation. In this work, Fe-MOFs/biomass cotton derived [email protected] [email protected] fiber ([email protected]@CF) composites were successfully obtained by means of in-situ synthesis and thermal decomposition processes. It was found that the [email protected] composites were uniformly distributed on the carbon fibers matrix. As a result, EM wave absorbing performances were greatly promoted via the synergic effects among Fe nanoparticles, nanoporous carbon and carbon fibers. A strong reflection loss (RL) of −46.2 dB and a wide absorbing bandwidth of 5.2 GHz (RL < -10 dB) with a matching thickness of 2.5 mm were achieved for the [email protected]@CF composites with a low filling ratio of 25%. Therefore, this work not only paved the way for development of biomass as a green, low-cost and renewable high-performance carbon-based absorber, but also provided a good design and fabricating concept for the composite materials of EM wave absorber.
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