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Issue 53, 2019
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Dual-functional SiOC ceramics coating modified carbon fibers with enhanced microwave absorption performance

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Abstract

Multi-functional carbon fiber (CF) based composites have great potential as new-type microwave absorption materials (MAMs). However, it was still a huge challenge to integrate antioxidation and MA properties into CF based composites. Herein, the SiOC ceramics coating modified carbon fibers (SiOC/CFs) were prepared by a polymer precursor pyrolysis method. The X-ray photoelectron spectroscopy (XPS) revealed that the SiOC coating was composed of SiOC, SiO2, and amorphous carbon phases. The SiOC ceramics as dual-functional coating not only heightened the oxidation temperature from 415 °C to 890 °C, but also highly improved the microwave absorbing ability from −12.60 dB to −47.50 dB. The enhanced MA performance could be attributed to multiple reflections in the cross-linked structure, various polarization relaxation processes, and the favorable impedance matching effect. The SiOC ceramics coating as a semiconductor could suppress the skin effect originating from the cross-linked CF network, thus leading to a favorable impedance matching behavior.

Graphical abstract: Dual-functional SiOC ceramics coating modified carbon fibers with enhanced microwave absorption performance

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Supplementary files

Article information


Submitted
08 Aug 2019
Accepted
20 Sep 2019
First published
27 Sep 2019

This article is Open Access

RSC Adv., 2019,9, 30685-30692
Article type
Paper

Dual-functional SiOC ceramics coating modified carbon fibers with enhanced microwave absorption performance

S. Zeng, W. Feng, S. Peng, Z. Teng, C. Chen, H. Zhang and S. Peng, RSC Adv., 2019, 9, 30685
DOI: 10.1039/C9RA06166E

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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    [Original citation] - Published by The Royal Society of Chemistry.

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