气凝胶
材料科学
反射损耗
微波食品加热
碳纳米管
复合数
吸收(声学)
热的
复合材料
保温
光电子学
退火(玻璃)
比模量
电信
计算机科学
图层(电子)
气象学
物理
作者
Xiaohan Wang,Ye Yuan,Xiaomeng Sun,Ruo Qiang,Yichao Xu,Yuanyuan Ma,Enshuang Zhang,Yibin Li
出处
期刊:Small
[Wiley]
日期:2024-03-10
标识
DOI:10.1002/smll.202311657
摘要
A complex electromagnetic environment is a formidable challenge in national defense areas. Microwave-absorbing materials are considered as a strategy to tackle this challenge. In this work, lightweight, flexible, and thermal insulating Carbon/SiO2 @CNTs (CSC) aerogel is successfully prepared coupled with outstanding microwave absorbing performance, through freeze-drying and high-temperature annealing techniques. The CSC aerogel shows a strong reflection loss (-55.16 dB) as well as wide effective absorbing bandwidth (8.5 GHz) in 2-18 GHz. It also retains good microwave absorption properties under tension and compression. Radar cross-sectional (RCS) simulation result demonstrates the CSC processing a strong reduction ability of RCS compared with a metal plate. Further exploration shows amazing flexibility and good thermal insulation properties of CSC. The successful preparation of this composite aerogel provides a broad prospect for the design of microwave-absorbing materials.
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