自蔓延燃烧触发合成三维层状石墨烯/BaFe₁₂O₁₉复合材料及其电磁波吸收性能
Self-propagating Combustion Triggered Synthesis of 3D Lamellar Graphene/BaFe12O19 Composite and Its Electromagnetic Wave Absorption Properties.
作者信息
Zhao Tingkai, Ji Xianglin, Jin Wenbo, Yang Wenbo, Peng Xiarong, Duan Shichang, Dang Alei, Li Hao, Li Tiehu
机构信息
State Key Laboratory of Solidification Processing, Shaanxi Engineering Laboratory for Graphene New Carbon Materials and Application, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
出版信息
Nanomaterials (Basel). 2017 Mar 3;7(3):55. doi: 10.3390/nano7030055.
The synthesis of 3D lamellar graphene/BaFe12O19 composites was performed by oxidizing graphite and sequentially self-propagating combustion triggered process. The 3D lamellar graphene structures were formed due to the synergistic effect of the tremendous heat induced gasification as well as huge volume expansion. The 3D lamellar graphene/BaFe12O19 composites bearing 30 wt % graphene present the reflection loss peak at -27.23 dB as well as the frequency bandwidth at 2.28 GHz (< -10 dB). The 3D lamellar graphene structures could consume the incident waves through multiple Reflection and scattering within the layered structures, Prolonging the propagation path of electromagnetic waves in the absorbers.
通过氧化石墨并依次采用自蔓延燃烧触发过程来合成三维层状石墨烯/BaFe₁₂O₁₉复合材料。由于巨大的热诱导气化以及巨大的体积膨胀的协同作用，形成了三维层状石墨烯结构。含有30 wt%石墨烯的三维层状石墨烯/BaFe₁₂O₁₉复合材料在-27.23 dB处呈现反射损耗峰值，在2.28 GHz（<-10 dB）处具有频率带宽。三维层状石墨烯结构可以通过层状结构内的多次反射和散射消耗入射波，延长电磁波在吸收体中的传播路径。
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