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Facile and economical fabrication of conductive polyamide 6 composites with segregated expanded graphite networks for efficient electromagnetic interference shielding

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Abstract

An efficient electromagnetic interference (EMI) shielding composite based on economical expanded graphite (EG) and polyamide 6 (PA6) was fabricated by a facial strategy in this work. A typical segregated structure was constructed by conventional mechanical mixing and hot pressing. EG sheets were selectively located at the boundary between PA6 regions, and thus constructed a well-connected segregate EG conductive network in the composite. Owing to the advantage of segregated network structure, EG effectively improved the EMI shielding effectiveness (SE) of PA6 at fairly low content. The effective EMI SE of 25 dB was achieved at 2.27 vol% EG loading. This result indicated the segregated PA6/EG composite can serve as an economical material for EMI shielding application.

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Acknowledgements

The authors gratefully acknowledge the financial support from the Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) (Grant No. sklpme2017-4-09), Natural Science Foundation of Shanxi Province (No. 201701D221089) and the National Natural Science Foundation of China (Grant No. 21704070).

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Authors and Affiliations

  1. Key Laboratory of Functional Nanocomposites of Shanxi Province, College of Materials Science and Engineering, North University of China, Taiyuan, 030051, People’s Republic of China

    Hongji Duan, Huixin Zhu, Yaqi Yang, Tingting Hou, Guizhe Zhao & Yaqing Liu

  2. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China

    Hongji Duan

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  1. Hongji Duan
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  2. Huixin Zhu
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  3. Yaqi Yang
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Correspondence to Yaqi Yang or Yaqing Liu.

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Duan, H., Zhu, H., Yang, Y. et al. Facile and economical fabrication of conductive polyamide 6 composites with segregated expanded graphite networks for efficient electromagnetic interference shielding. J Mater Sci: Mater Electron 29, 1058–1064 (2018). https://doi.org/10.1007/s10854-017-8006-z

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  • DOI: https://doi.org/10.1007/s10854-017-8006-z

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