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Elevated conductivity and electromagnetic interference shielding effectiveness of PVDF/PETG/carbon fiber composites through incorporating carbon black

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Abstract

Along with the electronic products entering people’s life, the electromagnetic radiation is becoming a serious problem threatening human health. Consequently, the aim of this paper is fabricating the electromagnetic shielding materials containing carbon fiber (CF), carbon black (CB), poly(vinylidene fluoride) (PVDF) and poly(ethylene terephthalateco-1,4-cylclohexylenedimethylene terephthalate) (PETG). By adjusting CB content, the composite with high electromagnetic interference shielding effectiveness (EMI SE) was achieved. Additionally, the effects of CB on the rheological, dynamic mechanical properties, and electrical resistivity of PVDF/PETG/CF composites were investigated in detail. That CB formed the conductive networks in the PVDF/PETG/CF/CB composite at 5 % of CB and above led to the reduction in electrical resistivity and the augment of the modulus as well as the glass transition temperature of PETG. From the electrical resistivity and storage modulus points of view, the short CF exhibited the better synergistic effect with CB than the long CF did. But the lowest electrical resistivity (0.39 Ω.cm) occurred in the long CF based composites containing 15 % of CB, and its EMI SE is determined to above 30 dB over a frequency of 0.1 to 1500 MHz.

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Acknowledgments

This article was supported by the Postdoctoral Science Foundation of China (No.2014 M560138); Project Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; the Natural Science Foundation of Fujian Province of China (No. 2014 J01068); Department of Education of Fujian Province Foundation (JK2013012); Research and demonstration of high value processing technology and equipment of agricultural products in Fujian Province (2014NZ0003).

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Authors and Affiliations

  1. College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China

    Jianbin Song & Biao Huang

  2. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China

    Jianbin Song, Quanping Yuan & Feng Fu

  3. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, China

    Huiliang Zhang

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  1. Jianbin Song
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  2. Quanping Yuan
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  3. Huiliang Zhang
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  4. Biao Huang
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  5. Feng Fu
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Correspondence to Jianbin Song.

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Song, J., Yuan, Q., Zhang, H. et al. Elevated conductivity and electromagnetic interference shielding effectiveness of PVDF/PETG/carbon fiber composites through incorporating carbon black. J Polym Res 22, 158 (2015). https://doi.org/10.1007/s10965-015-0798-z

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  • DOI: https://doi.org/10.1007/s10965-015-0798-z

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