Crochet process in design of activated carbon fibers/epoxy circuit screen composites with high microwave absorbing

YAO Bin; MA Weiwei; XIA Shaoxu; WU Qilin

doi:10.13801/j.cnki.fhclxb.20160322.006

Volume 34 Issue 1

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YAO Bin, MA Weiwei, XIA Shaoxu, et al. Crochet process in design of activated carbon fibers/epoxy circuit screen composites with high microwave absorbing[J]. Acta Materiae Compositae Sinica, 2017, 34(1): 47-52. doi: 10.13801/j.cnki.fhclxb.20160322.006

Citation:

YAO Bin, MA Weiwei, XIA Shaoxu, et al. Crochet process in design of activated carbon fibers/epoxy circuit screen composites with high microwave absorbing[J]. Acta Materiae Compositae Sinica, 2017, 34(1): 47-52. doi: 10.13801/j.cnki.fhclxb.20160322.006

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Crochet process in design of activated carbon fibers/epoxy circuit screen composites with high microwave absorbing

doi: 10.13801/j.cnki.fhclxb.20160322.006

YAO Bin^1,2,
MA Weiwei^1,2,
XIA Shaoxu^1,2,
WU Qilin^{1,2
,}

1.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China;
2.
College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

Received Date: 2016-01-11
Rev Recd Date: 2016-03-16
Publish Date: 2017-01-15

Abstract

Abstract

Crochet process was specially applied to combine activated carbon fibers (ACF) with glass fibers (GF) to improve the designability and complexity of frequency selective surface (FSS), ACF crochet structure circuit screen carbon fibers/epoxy(ACF/EP) composites were prepared. The effect of different knitted structure and ACF mass fraction to microwave absorbing performance of composites was discussed. The results show that the maximum reflection loss (RL) of both 4-needle-date-shaped FSS CF/EP composites with 100% CF and 16-needle-date-shaped FSS composites with 50% CF are higher than -50 dB, in addition, the effective absorption bandwidth (RL<-10 dB) could reach to 10 GHz. With complex crochet design, the porous structure of CF/EP composites increase, effective absorption bandwidth(RL<-10 dB) broaden, and 4-needle-date-shaped structure with more irregular aperture has excellent microwave absorbing property. Ideal CF/EP microwave absorbing composites will be obtained by combining the suitable mass fraction of chopped CF and knitted structure.
- crochet process,
- carbon fiber,
- frequency selective surface,
- porous structure,
- microwave absorbing property
Long Abstrsct
Innovation Points