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Modeling microwave dielectric properties of polymer composites using the interphase approach

Author

Listed:
  • Yassine Nioua
  • Salahddine El Bouazzaoui
  • Mohammed Essaid Achour
  • Luis Cadillon Costa

Abstract

The electrical properties of heterogeneous materials are closely related to the composition of its constituents. Several theoretical approaches have been developed to predict the complex permittivity of composites materials, such as the mixture laws and the effective medium theories. However, these laws fail to interpret experimental data at high concentrations of filler, because the morphological parameters such as particle size, their distribution, and mostly the interphase region between the components are not taken into account. A new model for predicting the complex permittivity of composite materials is presented, taking into account the interaction between the filler and the matrix. We report a study on the dielectric properties of the epoxy polymer/carbon black nanocomposites, with different concentrations of the dispersed conducting particles, at 35 GHz, using the interphase model. The experimental results of the complex permittivity are compared to those obtained by the proposed theoretical model.

Suggested Citation

  • Yassine Nioua & Salahddine El Bouazzaoui & Mohammed Essaid Achour & Luis Cadillon Costa, 2017. "Modeling microwave dielectric properties of polymer composites using the interphase approach," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 31(14), pages 1343-1352, September.
    • Handle: RePEc:taf:tewaxx:v:31:y:2017:i:14:p:1343-1352
    DOI: 10.1080/09205071.2017.1348261
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