Journal
MATERIALS & DESIGN
Volume 104, Issue -, Pages 68-75Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.05.005
Keywords
Electromagnetic shielding; Flexible; SiC fiber fabrics; Carbon nanotube; Pyrolytic carbon
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Funding
- Natural Science Foundation of China [51332004, 51372204]
- Fundamental Research Funds for the Central Universities [3102014JC02010403, 3102015BJ(II)JGZ023]
- 111 Project [B08040]
- Open Foundation of National Engineering Research Center of Electromagnetic Radiation Control Materials [ZYGX2014K003-2]
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX201605]
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In order to obtain a flexible electromagnetic shielding materials with thin thickness and low electromagnetic wave reflection, pyrolytic carbon (PyC) and carbon nanotube (CNT) were in situ formed on the surface of SiC fiber fabrics (SiCf, with the thickness of 0.34 mm) through chemical vapor deposition and catalytic chemical vapor deposition to form PyC-SiCf and CNT-SiCf fabrics, separately. CNT-SiCf can maintain the flexibility of SiC fiber fabrics because of the high aspect ratio of CNT, but PyC-SiCf fabrics can not. CNT-SiCf had much lower electrical conductivity than PyC-SiCf because of their higher contact electrical resistance. At the same loading, CNT-SiCf and PyC-SiCf could obtain higher EMI SE (>= 15 dB), but CNT-SiCf had lower reflection loss (<= 6 dB) than PyC-SiCf (>= 8 dB) because CNT-SiCf had much lower electrical conductivity and larger interface area than PyC-SiCf. (C) 2016 Elsevier Ltd. All rights reserved.
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