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Preparation and microwave absorbing properties of carbon fibers/epoxy composites with grid structure

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Abstract

Microwave absorbing materials of carbon fibers/epoxy composites with grid structure are designed and fabricated based on the idea of gradient impedance. The microwave absorbing properties of the materials are measured by using a microwave network analyzer in the frequency range of 8–18 GHz. The results show that the as prepared composites behaving excellent microwave absorbing property. Compared with the carbon fibers/epoxy composites with monolayer grid structure, the composites with multilayer grid structure have better impedance matching and microwave absorbing property. Specially, the reflectivity value of the carbon fibers/epoxy composites with three-layer grid structure is less than −10 dB in the range of 10–18 GHz, showing broadband microwave absorbing properties. Carbon fibers/epoxy composites with grid structure are believed to be the ideal candidate of novel microwave absorbing materials with lightweight, wide-frequency and excellent microwave absorbing property.

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Acknowledgments

The project was supported by the National Key Basic Research and Development Program under Grant No. 2011CB605804.

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Authors and Affiliations

  1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China

    Jun Zhang, Peng Xiao, Wei Zhou, Wen Hong & Heng Luo

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  1. Jun Zhang
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  2. Peng Xiao
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  3. Wei Zhou
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  4. Wen Hong
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  5. Heng Luo
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Correspondence to Peng Xiao.

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Zhang, J., Xiao, P., Zhou, W. et al. Preparation and microwave absorbing properties of carbon fibers/epoxy composites with grid structure. J Mater Sci: Mater Electron 26, 651–658 (2015). https://doi.org/10.1007/s10854-014-2445-6

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  • DOI: https://doi.org/10.1007/s10854-014-2445-6

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