Tree initiation time evaluation of epoxy/silica composites by partial discharge detection

Yu Chen, Takahiro Imai, Yoshimichi Ohki, Toshikatsu Tanaka

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

7 Citations (Scopus)

Abstract

Tree initiation time was evaluated by a pulse detection system developed by the authors to detect a small PD (partial discharge) signal that might take place at first just after a tree was formed. Six kinds of material were prepared for evaluation, i.e. base epoxy resin, microcomposite, two kinds of nanocomposites, and two kinds of nano-micro-mixed-composites. Lengths of trees detected were around 100 μm in our experiments. As a result, it was clarified that tree initiation time is prolonged by nano filler inclusion, but shortened by micro filler filling, and furthermore that nano fillers would help once-shortened time increase for micro filled epoxy specimens. PD erosion was evaluated for the same materials. It was confirmed that a good correlation exists between tree initiation time and PD resistance that is inverse to PD erosion. This correlation indicates that tree formation includes a PD erosion process. Detection of trees smaller than 100 um is required to clarify how a tree takes place at first.

Original languageEnglish
Title of host publication2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Pages404-407
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

  • Epoxy/silica composites
  • PD detection
  • PD erosion
  • Tree initiation time
  • Tree shape

ASJC Scopus subject areas

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

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  • Cite this

    Chen, Y., Imai, T., Ohki, Y., & Tanaka, T. (2009). Tree initiation time evaluation of epoxy/silica composites by partial discharge detection. In 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 (pp. 404-407). [5252405] (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). https://doi.org/10.1109/ICPADM.2009.5252405