期刊
APPLIED SURFACE SCIENCE
卷 563, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.150255
关键词
Liquid metal; Polydimethylsiloxane; Electrical conductivity; Multi-walled carbon nanotubes; Microwave shielding
类别
资金
- Natural Science Foundation Project of Chongqing [cstc2020jcyj-msxm0541]
- Opening Project of the State Key Laboratory of Polymer Materials Engineering (Sichuan University) [sklpme2020-4-10]
In this study, multi-walled carbon nanotube-filled polydimethylsiloxane (CNT/PDMS) composites with high-performance and tunable microwave shielding were prepared by incorporating liquid metals (LMs). The composites exhibited high absorption loss and low reflection loss, effectively reducing secondary microwave pollution. The microwave shielding performance of the composites containing LMs could be regulated by compression.
In this study, multi-walled carbon nanotube-filled polydimethylsiloxane (CNT/PDMS) composites with highperformance and tunable microwave shielding were prepared via the incorporation of liquid metals (LMs). First, the CNT particles were well dispersed in the PDMS pre-polymer through ultrasound assistance. Second, the LM and curing agents were added to the CNT/PDMS mixture with manual stirring to obtain a uniform CNT/LM/ PDMS mixture. This was followed by curing to produce the final CNT/LM/PDMS composites. The highperformance microwave shielding ability of the composites was ascribed to a synergistic effect between the nanoscale CNTs and microscale LM particles. Specifically, a microwave shielding effectiveness (SE) of 42.6 dB was achieved by the composites which contained 2.5 vol.% LM and 3.0 vol.% CNT particles. Furthermore, the composites exhibited high absorption loss and low reflection loss, which could effectively reduce secondary microwave pollution. More importantly, the microwave shielding performance of the composites containing LMs could be regulated by compression owing to the formation of cracks and the coalescence of the LM particles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据