Role of interface in highly filled epoxy/BaTiO3 nanocomposites. Part II-effect of nanoparticle surface chemistry on processing, thermal expansion, energy storage and breakdown strength of the nanocomposites

Xingyi Huang, Liyuan Xie, Ke Yang, Chao Wu, Pingkai Jiang, Shengtao Li, Shuang Wu, Kohei Tatsumi, Toshikatsu Tanaka

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Highly filled dielectric polymer nanocomposites with high dielectric constant nanoparticles (e.g., BaTiO3) have promising application in many fields such as energy storage. The effectiveness of these nanoparticles to increase the dielectric constant and energy density of the resulting nanocomposites has already been demonstrated. However, the role of interface between the nanoparticles and polymer matrix on thermal expansion, energy storage and breakdown strength-the three parameters that are important for practical application of the dielectric polymer nanocomposites, has not been systematically documented. In this contribution, we investigated the effect of six kinds of nanoparticle surface chemistry on the processing, coefficient of thermal expansion, energy storage and breakdown strength of highly filled epoxy/BaTiO3 nanocomposites. It was found that all these aspects, in particular the processability of the nanocomposites, are associated with the nanoparticle surface chemistry. Combining the processability, coefficient of thermal expansion, energy storage and breakdown strength of the nanocomposites, we conclude that the nanoparticles functionalized by silane coupling agents with terminal groups capable of reacting with the epoxy matrix are more suitable for preparing highly filled dielectric polymer nanocomposites.

Original languageEnglish
Article number6783038
Pages (from-to)480-487
Number of pages8
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume21
Issue number2
DOIs
Publication statusPublished - 2014 Apr

Keywords

  • Interface
  • breakdown strength
  • coefficient of thermal expansion
  • energy storage
  • epoxy
  • nanocomposites
  • processing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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