Preparation and preliminary characteristic evaluation of epoxy/alumina nanocomposites

Masahiro Kozako, Shunichi Yamano, Ryoichi Kido, Yoshimichi Ohki, Masanori Kohtoh, Shigemitsu Okabe, Toshikatsu Tanaka

Research output: Contribution to conferencePaper

48 Citations (Scopus)

Abstract

Epoxy/ alumina nanocomposites were newly prepared by dispersing 3, 5, and 7 weight % nano-scale boehmite alumina particles in a bisphenol-A epoxy resin. Dispersion of alumina particles in the nanocomposite specimen was observed by scanning electron microscopy (SEM). Flexural properties, dynamic viscoelasticity, permittivity, partial discharge (PD) resistance, and electrical breakdown time were investigated for the nanocomposite specimens in comparison with those of an epoxy resin without nanofillers. The following results were obtained. The nanocomposite specimens keep high transparency similar to the pure resin. Alumina particles with a size below about 50 nm are homogeneously dispersed in the epoxy matrix. Due to dispersion of the nanofillers in the specimens, flexural properties, PD resistance, and electrical breakdown time are improved. The nanocomposites exhibit almost no change in glass transition temperature and permittivity.

Original languageEnglish
Pages231-234
Number of pages4
Publication statusPublished - 2005 Oct 7
Event2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu, Japan
Duration: 2005 Jun 52005 Jun 9

Conference

Conference2005 International Symposium on Electrical Insulating Materials, ISEIM 2005
CountryJapan
CityKitakyushu
Period05/6/505/6/9

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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    Kozako, M., Yamano, S., Kido, R., Ohki, Y., Kohtoh, M., Okabe, S., & Tanaka, T. (2005). Preparation and preliminary characteristic evaluation of epoxy/alumina nanocomposites. 231-234. Paper presented at 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, Japan.