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Influence of adding carbon black on electrical conductivity in dynamically vulcanized of poly (vinylidene fluoride)/fluoroelastomer composites

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International Journal of Plastics Technology

Abstract

The present work was focused on studying the effects of different CB loadings on the rheological, thermal, tensile, dynamic mechanical, and electrical properties of polyvinylidene fluoride and FKM composites. To these ends, dynamic mechanical thermal analysis (DMTA) was conducted, and the CB grade and method chosen for compound preparation were CB (N330) by melt mixing with different shear effects were examined, respectively. The composites were melt-blended with CB at 190 °C in an internal mixer, after which the properties of filled and unfilled composites were compared. The DMTA analysis revealed that the area under the loss tangent (tanδ) peak decreased and that the tanδ temperature of the rubber phase increased with CB loading. The presence of CB improved the mechanical properties, such as the Young’s modulus and tensile strength, of the composites and increased thermal stability given the high thermal stability of CB and the interaction between the CB particles and the polymer matrices. The increase in the electrical conductivities of the composites under different CB loadings was also examined with different shear effects because of the different dispersion states of CB. The percolation threshold of conductive thermoplastic vulcanizate composite based on conductive CB was observed and the experimental data could be well fitted to the general equation model.

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Authors and Affiliations

  1. Iran Polymer and Petrochemical Institute, P.O. Box: 14965/115, Tehran, Islamic Republic of Iran

    Mojtaba Deilamy Moezzi, Mohammad Karrabi & Yousef Jahani

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  1. Mojtaba Deilamy Moezzi
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  2. Mohammad Karrabi
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  3. Yousef Jahani
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Deilamy Moezzi, M., Karrabi, M. & Jahani, Y. Influence of adding carbon black on electrical conductivity in dynamically vulcanized of poly (vinylidene fluoride)/fluoroelastomer composites. Int J Plast Technol 23, 46–55 (2019). https://doi.org/10.1007/s12588-019-09235-6

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