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Thermal conductivity and electric breakdown strength properties of epoxy/ alumina /boron nitride nanosheets composites

  • Xi'an Jiaotong University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

13 Scopus citations

Abstract

Dielectric polymer composites with high thermal conductivity and high electric breakdown strength are needed for high voltage devices. Epoxy resins is an excellent electrically insulating material, but low thermal conductivity limits its applications. This work aims to effectively enhance the thermal conductivity and keep the breakdown strength of composites as high as possible. In this study, α-alumina (α-Al2O3) particles with an average size of 0.2μm, and boron nitride nanosheets (BNNSs) with an average diameter of 1μm and thickness of around 40nm were homogeneously mixed with epoxy resin, and a three-phase composite was thus obtained. The superiority of this method is that three-phase composites not only show significantly increased thermal conductivity but also have higher breakdown strength in comparison with that of the two-phase α-Al203/epoxy composites. It is clear that epoxy with hybrid fillers has great promising for high thermal conductive insulating materials for the high voltage insulation.

Original languageEnglish
Title of host publicationProceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages355-358
Number of pages4
ISBN (Electronic)9781509028023
DOIs
StatePublished - 18 Aug 2016
Event1st IEEE International Conference on Dielectrics, ICD 2016 - Montpellier, France
Duration: 3 Jul 2016 → 7 Jul 2016

Publication series

NameProceedings of the 2016 IEEE International Conference on Dielectrics, ICD 2016
Volume1

Conference

Conference1st IEEE International Conference on Dielectrics, ICD 2016
Country/TerritoryFrance
CityMontpellier
Period3/07/16 → 7/07/16

Keywords

  • AlO
  • BNNSs
  • Electric breakdown strength
  • Epoxy
  • Thermal conductivity

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