Dielectric properties of CB@TiO2/BaTiO3/epoxy composites

  • Xin Wang
  • Zewei Li


High-k (High permittivity) dielectric composites with low dielectric loss exhibit great potential applications in embedded capacitors and energy storage systems. In this study, CB@TiO2 core–shell particles and BaTiO3 powder were incorporated into the epoxy matrix to fabricate three-phase composites. Morphology of CB@TiO2 particles and dielectric properties of CB@TiO2/BaTiO3/epoxy composites were investigated. Results showed that the dielectric properties of the composites can be improved by the addition of CB@TiO2 particles. The dielectric constant of the composites with 30 vol% BaTiO3 and 20 vol% CB@TiO2 can reach 32.14 at the frequency of 1 kHz while the dielectric loss (tanδ) of the composites still keeps low (0.016 at 1 kHz). Additionally, the positive effect of surface coating on the application of conductive filler is indicated by the results.


Dielectric Constant Dielectric Property Carbon Black Dielectric Loss BaTiO3 
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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringSouth China University of TechnologyGuangzhouPeople’s Republic of China

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