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ASA/graphite/carbon black composites with improved EMI SE, conductivity and heat resistance properties

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Abstract

Composites, comprised of acrylonitrile styrene acrylate copolymer (ASA)/graphite (GR) with high electromagnetic interference shielding effectiveness (EMI SE), were fabricated by the introduction of carbon black (CB). The effects of CB on properties such as EMI SE, morphology, heat resistance, rheological and mechanical performance of the composites were characterized using a scanning electron microscope (SEM), rotational rheometer, electromagnetic shielding measuring instruments. The graphite and carbon black exhibited positive synergistic action, which promoted the complete formation of conductive networks in ASA matrix. The EMI SE and electrical conductivity of the ASA/GR/CB composites increased with higher CB loadings. In the frequency range of 30–3000 MHz, the maximum EMI SE of ASA composites with 50 % fillers reached 40 dB, but with 40 % fillers this property reached its maximum value of 50 dB. The flexural strength of ASA/GR/CB composites started to decline as CB loading exceeded 5 %. The heat resistance of the composites was improved due to the addition of CB. In this respect, the vicar softening temperature (VST) of the composites with 40 % fillers increased from 115.1 to 132.7 °C, and the VST of the composites with 50 % fillers was elevated from 125.4 to 138.9 °C.

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Acknowledgments

This article was supported by the Postdoctoral Science Foundation of China (No. 2014M560138); Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (No. 20141685), Natural Science Foundation of Fujian Province of China (No. 2014J01068), Research and Demonstration of High Value Processing Technology and Equipment of Agricultural Products in Fujian Province (2014NZ0003), Key Laboratory of Wood Science and Technology, Zhejiang Province (No. 2014lygcy015).

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Authors and Affiliations

  1. College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, People’s Republic of China

    Jianbin Song, Wenbin Yang & Xueshen Liu

  2. School of Engineering, Zhe Jiang A&F University, Hangzhou, 311300, People’s Republic of China

    Wenbiao Zhang

  3. College of Material Science and Engineering, Northeast Forestry University, Harbin, 150040, People’s Republic of China

    Yanhua Zhang

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  1. Jianbin Song
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  2. Wenbin Yang
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  3. Xueshen Liu
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  4. Wenbiao Zhang
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  5. Yanhua Zhang
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Correspondence to Jianbin Song or Xueshen Liu.

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Song, J., Yang, W., Liu, X. et al. ASA/graphite/carbon black composites with improved EMI SE, conductivity and heat resistance properties. Iran Polym J 25, 111–118 (2016). https://doi.org/10.1007/s13726-015-0404-6

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  • DOI: https://doi.org/10.1007/s13726-015-0404-6

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