Space charge distributions in epoxy/MgO nanocomposites at various temperatures

Q. Xie, Y. H. Cheng, Naoshi Hirai, Yoshimichi Ohki

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

6 Citations (Scopus)

Abstract

The effect of addition of nano-sized magnesia fillers to epoxy resin on the distribution of space charges is examined at various temperatures from 40 to 200 °C. Although the spatial distribution of space charges in the sample varies depending on temperature and filler content, magnesia nanocomposites exhibit a smaller amount of homocharge near the cathode than the unfilled epoxy resin at 40 and 80 °C. At 120 and 140 °C, although the polarity of space charge in the vicinity of the cathode becomes positive or hetero, its amount becomes smaller with the increase in content of magnesia nanofillers. This finding agrees well with the fact that magnesia nanofillers effectively suppress the formation of space charge in low-density or crosslinked polyethylene. As another distinctive feature, it has become clear that the addition of magnesia nanofillers effectively suppresses carrier transport, especially at high temperatures.

Original languageEnglish
Title of host publicationICHVE 2016 - 2016 IEEE International Conference on High Voltage Engineering and Application
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509004966
DOIs
Publication statusPublished - 2016 Dec 27
Event5th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2016 - Chengdu, China
Duration: 2016 Sep 192016 Sep 22

Other

Other5th IEEE International Conference on High Voltage Engineering and Application, ICHVE 2016
CountryChina
CityChengdu
Period16/9/1916/9/22

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Keywords

  • dielectric peroperty
  • electric modulus
  • epoxy resin
  • magnesium oxide
  • nanocomposite
  • space charge

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Xie, Q., Cheng, Y. H., Hirai, N., & Ohki, Y. (2016). Space charge distributions in epoxy/MgO nanocomposites at various temperatures. In ICHVE 2016 - 2016 IEEE International Conference on High Voltage Engineering and Application [7800636] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICHVE.2016.7800636