Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al2O3/epoxy composites

Zhe Li, Kenji Okamoto, Yoshimichi Ohki, Toshikatsu Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

Epoxy resin often suffers lower dielectric breakdown strength if micro-fillers are loaded. It might be possible to raise the once lowered breakdown strength, if nano-fillers are added. In this paper, such performances were investigated on model specimens consisting of alumina (Al2O 3). First of all, PD (partial discharge) behavior on the surfaces of samples was clarified in the insulation system consisting of a flat copper electrode attached on an epoxy substrate. Then, on the basis of finding, the breakdown strengths were investigated by using a sphere to sphere electrode structure with a flat sample inserted. Several materials consist of neat epoxy, 5%wt nano-Al2O3/epoxy composite, 60%wt micro-Al 2O3/epoxy composite and 2%wt nano-60% wt\micro-Al 2O3/epoxy composite. It was found that nano-micro-Al 2O3/epoxy composite is higher in both dielectric strength and PD resistance than micro-Al2O3/epoxy composite.

Original languageEnglish
Title of host publication2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Pages753-756
Number of pages4
DOIs
Publication statusPublished - 2009 Nov 16
Event2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 - Harbin, China
Duration: 2009 Jul 192009 Jul 23

Publication series

NameProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

Other

Other2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
CountryChina
CityHarbin
Period09/7/1909/7/23

Keywords

  • Breakdown strength
  • Epoxy
  • Nano-AlO
  • Nano-micro-composite
  • Partial discharge

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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  • Cite this

    Li, Z., Okamoto, K., Ohki, Y., & Tanaka, T. (2009). Role of nano-filler on partial discharge resistance and dielectric breakdown strength of micro-Al2O3/epoxy composites. In 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 (pp. 753-756). [5252321] (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). https://doi.org/10.1109/ICPADM.2009.5252321