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Injection-Compression-Compression Process for Preparation of High-Performance Conductive Polymeric Composites

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Abstract

Injection-compression-compression (I-C-C) process was studied to prepare polypropylene/ short carbon fiber (PP/SCF) composites. The effects of I-C-C process on the conductive network, fiber distribution and electric conductivity were investigated. The distance between conductive particles of the blending system was reduced by two-stage compression, so that the conductive network was compacted. The forming of dense conductive network significantly improved the conductivity. Moreover, I-C-C can effectively interfere with the fiber flow direction to enhance the conductivity of the infiltrated surface. Combined with the microstructure and electrical conductivity, the applicable mold temperature and compression speed range of the I-C-C process for PP can be obtained. The results showed that the electrical conductivity of the I-C-C prepared PP/SCF was increased up to 5 orders of magnitude higher than that of ordinary injection molding. Conductivity of PP/ 10 wt% SCF conductivity reached 3.7S/m, PP /15 wt% SCF reached 33S/m, and PP/ 20% SCF reached 150S/m.

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Acknowledgements

[1] This work was supported  by National Natural Science Foundation of China (Grant No.51673020) and by Fundamental Research Funds for the Central Universities (Grant No. ZY1812, JD1810).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, No.15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, China

    Mengyang Shi, Daming Wu, Ying Liu, Yao Huang, Jingyao Sun & Chong Leng

  2. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, No.15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, China

    Daming Wu

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  1. Mengyang Shi
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  2. Daming Wu
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  3. Ying Liu
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Correspondence to Ying Liu or Yao Huang.

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Shi, M., Wu, D., Liu, Y. et al. Injection-Compression-Compression Process for Preparation of High-Performance Conductive Polymeric Composites. Appl Compos Mater 26, 1139–1150 (2019). https://doi.org/10.1007/s10443-019-09775-5

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