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

作　　者：Xinli Ye Pengyi Xu Hao Yu Shan Li Xiaomin Ma Wei Xu Junxiong Zhang 

机构地区：[1]School of Civil Aviation,Northwestern Polytechnical University,Xi'an 710072,China [2]Research&Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 518057,China [3]Yangtze River Delta Research Institute of Northwestern Polytechnical University,Suzhou 215400,China [4]National Equipment New Material&Technology(Jiangsu)Co.,Ltd,Suzhou 215400,China [5]Xi'an Electronic Engineering Research Institute,Xi'an 710100,China [6]School of Textile and Clothing,Nantong University,Nantong 226019,China

出　　处：《Defence Technology（防务技术）》2024年第12期73-82,共10页Defence Technology

基　　金：supported by various grants including the Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2021A1515111155 and 2022A1515111200);Basic Research Programs of Taicang(Grant Nos.TC2023JC03 and TC2022JC08);Natural Science Foundation of Shaanxi Province(Grant No.2023JC-QN-0380);Nantong Natural Science Foundation(Grant No.JC2023011);Shanghai Central Guidance Fund for Local Science and Technology Development(Grant No.YDZX20233100004009)。

摘　　要：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 followed by the sol-gel and carbonization reduction process.The results showed that the effective electromagnetic 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.Besides,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.

关 键 词：SiC aerogel Microwave absorbing SiC/Paraffin ratio Functional applications 

分 类 号：TQ427.26[化学工程] TN03[电子电信—物理电子学]