Millimeter Wave Absorbing Electromagnetic Properties of ZnO Whisker/Silicon Resin Coating Material

Abstract:

Wave-absorbing coating samples are fabricated with ZnO whisker, the absorbent and silicon resin coating as the binder.The influences of the content of ZnO whisker in the absorbing coating and the thickness of the coating on millimeter wave absorbing property are analyzed.With the increasing of the thickness, the absorbing performance of the sample is enhanced significantly , the results show that with a ZnO whisker mass of 50% and coating thickness of 2 mm, excellent absorption (R<-10dB) is observed in the wave band from 66 to 78 GHz (with a bandwidth of 12GHz) . When the ZnO whisker mass is reduced to 30% with the same thickness of 2mm, two absorption bands are obtained from 55 to 67 GHz (with a bandwidth 12GHz) and 100 to 110 GHz (with a bandwidth 10GHz). Maxwell equations and boundary conditions are used to analyze the absorbing mechanism of the coating.

• Periodical: Materials Science Forum (Volume 852)
• Pages: 1055-1059
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.852.1055
• Online since: April 2016
• Authors: Xiong Xuan, Hai Yan Zhang, Guo Xun Zeng, Ng Kung Bo, Chi Hou Chan
• Keywords: Absorbing Electromagnetic Mechanism, Millimeter Wave Absorbing Performance, Reflectivity, ZnO Whisker

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