Comparison of dielectric properties of low-density polyethylene/MgO composites with different size fillers

K. Ishimoto, T. Tanaka, Y. Ohki, Y. Sekiguchi, Y. Murata, M. Gosyowaki

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

19 Citations (Scopus)

Abstract

Two kinds of low-density polyethylene (LDPE) composites were prepared by adding semi-spherical MgO fillers different in diameter, one being around several ten nra and the other being several um, and their dielectric properties were compared. At all the measurement temperatures, the conductivity is decreased and the permittivity is increased by the addition of fillers, irrespective of their sizes. However, the conductivity decrease is more significant and the permittivity increase is suppressed more in the case of the nm fillers. In addition, a drastic increase in dielectric loss factor at low frequencies is suppressed more significantly by the addition of the nm fillers. While the formation of packet-like charge observed in LDPE, which is assumed to appear at the front of the high-conductivity region that proceeds from one electrode toward the counter one, is suppressed significantly by both fillers, the effect is more significant in the nanocomposites. This means that the nanofillers suppress the increase in conductivity induced by the voltage application more effectively.

Original languageEnglish
Title of host publication2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008
Pages208-211
Number of pages4
DOIs
Publication statusPublished - 2008 Dec 1
Event2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008 - Quebec City, QC, Canada
Duration: 2008 Oct 262008 Oct 29

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
ISSN (Print)0084-9162

Conference

Conference2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008
CountryCanada
CityQuebec City, QC
Period08/10/2608/10/29

ASJC Scopus subject areas

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

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    Ishimoto, K., Tanaka, T., Ohki, Y., Sekiguchi, Y., Murata, Y., & Gosyowaki, M. (2008). Comparison of dielectric properties of low-density polyethylene/MgO composites with different size fillers. In 2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008 (pp. 208-211). [4772819] (Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP). https://doi.org/10.1109/CEIDP.2008.4772819