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Preparation and microwave absorption performance of SiC aerogel via sol-gel and carbonization reduction process

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Preparation and microwave absorption performance of SiC aerogel via sol-gel and carbonization reduction process
SiC aerogel presents several advantageous features like lightweight and high temperature resistance when applied as microwave absorbing material.In this paper,SiC aerogel was prepared eventually fol-lowed by the sol-gel and carbonization reduction process.The results showed that the effective elec-tromagnetic microwave absorption capacity of SiC aerogel was highly increased after being pyrolyzed at 1500 ℃,which presented a minimum reflection loss value of-57.80 dB at 3.10 mm and 9.86 GHz.Be-sides,the electromagnetic parameters of SiC aerogel with different paraffin ratios were discussed as well as the varying electromagnetic microwave absorption performances.The minimum reflection loss value first rose then fell as the SiC/paraffin ratio increased,which demonstrated the importance of SiC content.This study establishes the theoretical foundation for the subsequent functional application of SiC aerogel.

SiC aerogelMicrowave absorbingSiC/Paraffin ratioFunctional applications

Xinli Ye、Pengyi Xu、Hao Yu、Shan Li、Xiaomin Ma、Wei Xu、Junxiong Zhang

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School of Civil Aviation,Northwestern Polytechnical University,Xi'an 710072,China

Research & Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518057,China

Yangtze River Delta Research Institute of Northwestern Polytechnical University,Suzhou 215400,China

National Equipment New Material & Technology(Jiangsu)Co.,Ltd,Suzhou 215400,China

Xi'an Electronic Engineering Research Institute,Xi'an 710100,China

School of Textile and Clothing,Nantong University,Nantong 226019,China

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SiC aerogel Microwave absorbing SiC/Paraffin ratio Functional applications

2024

10.1016/j.dt.2024.08.006

防务技术
中国兵工学会

防务技术

CSTPCD
影响因子：0.358
ISSN：2214-9147
年,卷(期)：2024.42(12)