Dielectric properties and PD resistance of epoxy/fumed and precipitated silica and alumina nanocomposites

Toshikatsu Tanaka, Tomonori Iizuka, Christian Meichsner, Peter Gröppel, Dieter Heinl, Jürgen R. Weidner

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

Epoxy/fumed and precipitated silica and alumina nanocomposites were evaluated on their dielectric properties and partial discharge (PD) resistance. Dielectric properties, i.e., permittivity and dissipation factor tanδ were measured in the frequency range from 20 Hz to 1 MHz. PD resistance was assessed using a rod-to-plane electrode with an air gap 0.2 mm under 4 kVrms. A new discovery was made for moisture and chemical residue effects for the dielectric properties. Natural moisture would not affect much permanent dielectric properties. It was elucidated that nano filler addition would enhance PD resistance, as expected. Furthermore, it was found that epoxy/silica nanocomposite is better in PD resistance than epoxy/alumina nanocomposite. Filler preparation methods, i.e., fumed and precipitated, might influence both properties.

Original languageEnglish
Article number6378775
Pages (from-to)279-282
Number of pages4
JournalAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2012 - Montreal, QC, Canada
Duration: 2012 Oct 142012 Oct 17

ASJC Scopus subject areas

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

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