Generation time and morphology of infancy trees in epoxy/silica nanocomposite

Toshikatsu Tanaka, Tomonori Iizuka, Jiandong Wu

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

2 Citations (Scopus)

Abstract

Infancy trees, i.e. trees in their early stage, in neat epoxy and epoxy/silica nanocomposite were investigated in terms of their generation time and morphology. Generation time represented by V-t characteristics obeys a formula Voct-n. It is to be noted that similar effects are imposed not only on mm order long trees but also on several tens μm order short infancy trees. Infancy tree generation time is increased by nano filler 5 wt% addition and by surface treatment of nano filler. The same thing can be said to a value 'n'. As for morphology of the infancy trees, it was clarified from optical microscope observation that there is no significant difference either in epoxy or in nanocomposite, as far as their lengths are almost the same. An infancy tree seems to grow at first between neighboring nano filler particles and to extend by contacting nano filler particles in their growing path. Since the infancy tree is thin in the beginning and becomes thick afterwards, chance of the tree to meet with nano filler is considered to be increase.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Electrical Insulating Materials
PublisherInstitute of Electrical Engineers of Japan
Pages5-8
Number of pages4
ISBN (Print)9784886860743
Publication statusPublished - 2011
Event2011 International Conference on Electrical Insulating Materials, ISEIM 2011 - Kyoto
Duration: 2011 Sep 62011 Sep 11

Other

Other2011 International Conference on Electrical Insulating Materials, ISEIM 2011
CityKyoto
Period11/9/611/9/11

Fingerprint

Silicon Dioxide
Fillers
Nanocomposites
Silica
Surface treatment
Microscopes

Keywords

  • epoxy
  • nanocomposite
  • silica
  • tree initiation
  • tree morphology
  • treeing
  • treeing breakdown
  • V-t charactersitics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Tanaka, T., Iizuka, T., & Wu, J. (2011). Generation time and morphology of infancy trees in epoxy/silica nanocomposite. In Proceedings of the International Symposium on Electrical Insulating Materials (pp. 5-8). [6826262] Institute of Electrical Engineers of Japan.

Generation time and morphology of infancy trees in epoxy/silica nanocomposite. / Tanaka, Toshikatsu; Iizuka, Tomonori; Wu, Jiandong.

Proceedings of the International Symposium on Electrical Insulating Materials. Institute of Electrical Engineers of Japan, 2011. p. 5-8 6826262.

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

Tanaka, T, Iizuka, T & Wu, J 2011, Generation time and morphology of infancy trees in epoxy/silica nanocomposite. in Proceedings of the International Symposium on Electrical Insulating Materials., 6826262, Institute of Electrical Engineers of Japan, pp. 5-8, 2011 International Conference on Electrical Insulating Materials, ISEIM 2011, Kyoto, 11/9/6.
Tanaka T, Iizuka T, Wu J. Generation time and morphology of infancy trees in epoxy/silica nanocomposite. In Proceedings of the International Symposium on Electrical Insulating Materials. Institute of Electrical Engineers of Japan. 2011. p. 5-8. 6826262
Tanaka, Toshikatsu ; Iizuka, Tomonori ; Wu, Jiandong. / Generation time and morphology of infancy trees in epoxy/silica nanocomposite. Proceedings of the International Symposium on Electrical Insulating Materials. Institute of Electrical Engineers of Japan, 2011. pp. 5-8
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