INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Simulation and Experimental Study on Electromagnetic Wave Absorbing Properties of Gypsum-based Materials with 3D Cubic Periodic Arrays |
ZHU Liancheng1,2, JI Zhijiang1,2, XIE Shuai1,2, ZHANG Yuan1,2, WANG Jing1,2, ZHANG Jinjun1,2, LI Kan3, LI Fei4
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1 China Building Materials Academy, Beijing 100024, China 2 State Key Laboratory of Green Building Materials, Beijing 100024, China 3 The Third Security Division of the General Administration of Organ Affairs of the Central Military Commission, Beijing 100120, China 4 PLA 32378 Troops, Beijing 100072, China |
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Abstract Gypsum based electromagnetic wave absorbing material with broadband characteristics was designed, based on the 3D cubic periodic array structure, and acetylene carbon black (CB) was used as the absorbing agent. HFSS simulation results show that the wave absorbing property and effective band can be influenced significantly by the edge length, height of the 3D periodic array cells, the thickness of basic layer, and mass fraction of CB. The experimental results indicate that when the periodic array cell edge length and height is 10 mm and 5mm, basic la-yer thickness is 10mm, and CB mass fraction is 2%, the bandwidth for -10 dB of the sample reaches 13.8 GHz in the frequency range of 4.2—18 GHz. And the simulation results are verified by experimental results. The electromagnetic attenuation of this material can be mainly attributed to the electrical resistance loss of CB and the structural effects of 3D periodic arrays.
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Published: 01 July 2021
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Fund:Preliminary Research and Exploration Project of the State Key Laboratory of Green Building Materials (ZA-4). |
About author:: Liancheng Zhu received his B.S. degree in June 2017 from University of Science and Technology Beijing. He is currently pursuing his M.S. degree at the State Key Laboratory of Green Building Materials, China Building Materials Academy under the supervision of Prof. Zhijiang Ji, focusing on the research of electromagnetic protection building materials. Zhijiang Ji is currently professor level senior engineer of the State Key Laboratory of Green Building Materials, China Building Materials Academy, doctoral supervisor. In 2003, he graduated from China Building Materials Academy. Now he is the director of the Institute of Environmental Materials Science and Engineering of the General Academy and the academic leader of the State Key Laboratory of Green Building Materials. He also serves as the chairman of the technical committee of environmental friendly and healthy building materials standardization and the secretary general of the Housing Construction Materials Branch of China Silicate Society. He presided over and participated in the 863 Program, the 10th Five-Year Plan, the 11th Five-Year Plan, the 12th Five-Year Plan, the 13th Five-Year Plan, the National Natural Science Fund, and the Beijing Natural Science Fund. More than 30 national and industrial standards have been proposed and formulated, and more than 60 national invention patents have been declared and approved. He has published more than 200 academic papers and 5 works. The main research fields are humidity regulation, phase change heat storage and temperature regulation, electromagnetic protection, anti-bacterial and anti-mildew, chemical pollution control materials and technologies, etc. |
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