Forming of Three-layer Graphene Absorber by Fused Deposition Modeling and Effect of Interlayer Material Distribution on Microwave Absorption Properties
WU Haihua*, YANG Zenghui, LIU Li, ZHANG Renjing, DENG Kaixin, LI Yan
Graphite Additive Manufacturing Technology and Equipment Hubei Engineering Research Center,College of Mechanical and Power Engineering of China Three Gorges University, Yichang 443002, Hubei, China
Abstract: Graphene/polylactic acid and graphene/Fe3O4/polylactic acid composites and three-layer graphene absorbers were rapidly prepared by fused deposition modeling technology. The electromagnetic parameters of the composites were measured and the reflectivity was calculated. The effects of interlayer distribution and pore structure of absorber on the microwave absorbing properties of three-layer graphene absorber were studied by CST simulation and experiment. It is found that for the composites, the two-component absorber has better microwave absorption performance, but it is difficult to form a good impedance match with the graphene one-component absorber. For the three-layer graphene absorber, graphene presents a uniform gradient distribution (The addition amount of graphene is 5%, 7% and 9% respectively), which can obtain the best absorbing effect. The existence of periodic hole structure, on the one hand, increases the number of reflection interfaces, resulting in more edge scattering effects and multiple resonance coupling. On the other hand, by improving impedance matching, it can realize full coverage effective absorption (reflectivity less than-10dB) in Ku band (12—18GHz) when graphene is distributed in a non-uniform gradient (The addition of graphene is 7%, 7% and 9% respectively). It provided a reference for efficient absorption in microwave band.
通讯作者:
*吴海华,三峡大学机械与动力学院教授,博士研究生导师。1993年武汉理工大学船舶机械制造及其自动化专业本科毕业,2003年华中科技大学材料加工工程专业硕士毕业,2009年西安交通大学机械工程专业博士毕业,现任三峡大学机械与动力学院副院长。目前主要从事石墨/石墨烯3D打印等研究工作。近年来,在《机械工程学报》、Rapid Prototyping Journal、Journal of Advanced Manufacturing Technology等知名期刊发表学术论文70多篇,获得国家授权发明专利25项,科研成果转化两项。
引用本文:
吴海华, 杨增辉, 刘力, 张忍静, 邓开鑫, 李言. 三层石墨烯吸波体熔融沉积成形及层间材料分布对吸波性能的影响[J]. 材料导报, 2023, 37(2): 21080161-7.
WU Haihua, YANG Zenghui, LIU Li, ZHANG Renjing, DENG Kaixin, LI Yan. Forming of Three-layer Graphene Absorber by Fused Deposition Modeling and Effect of Interlayer Material Distribution on Microwave Absorption Properties. Materials Reports, 2023, 37(2): 21080161-7.
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2023, Vol. 37 
