期刊
COMPOSITES COMMUNICATIONS
卷 22, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2020.100486
关键词
Silicone rubber; SnO2@MWCNT; Wave-absorbing composites; Heat resistance index
资金
- Shenzhen Science and Technology Innovation Fund [JCYJ20170815155705061]
- China Aerospace Science and Industry Corporation [2019-HT-XG, 2020HT-XG]
- Fundamental Research Funds for the Central Universities [310201911qd003]
- China Postdoctoral Science Foundation [2019M653735]
- Polymer Electromagnetic Functional Materials Innovation Team of Shaanxi Sanqin Scholars
SnO2@MWCNT wave absorbent was firstly fabricated via a hydrothermal process followed by heat treatment. Then SnO2@MWCNT/silicone rubber wave-absorbing composites were obtained by solution casting method. XRD, Raman, TGA, XPS, and TEM analyses indicated the successful preparation of covalently bonded SnO2@MWCNT absorbent with encapsulation structure. When the mass fraction of SnO2@MWCNT was 7.5 wt% and the sample thickness was 2.6 mm, the SnO2@MWCNT/silicone rubber wave-absorbing composite displayed the minimum reflection loss (RLmin) of 56.9 dB and effective absorption bandwidth (EAB) of 3.1 GHz. The outstanding wave-absorbing performances of SnO2@MWCNT/silicone rubber wave-absorbing composites could be ascribed to the excellent impedance matching and dielectric loss capability. Furthermore, the corresponding 7.5 wt% SnO2@MWCNT/silicone rubber wave-absorbing composite exhibited heat resistance index (THRI) of 196.3 degrees C, higher than that of neat silicone rubber (187.4 degrees C).
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