Superiority of dielectric properties of LDPE/MgO nanocomposites over microcomposites

Kazuyuki Ishimoto; Etsu Kanegae; Yoshimichi Ohki; Toshikatsu Tanaka; Yoitsu Sekiguchi; Yoshinao Murata; C. C. Reddy

doi:10.1109/TDEI.2009.5361597

Superiority of dielectric properties of LDPE/MgO nanocomposites over microcomposites

Kazuyuki Ishimoto, Etsu Kanegae, Yoshimichi Ohki, Toshikatsu Tanaka, Yoitsu Sekiguchi, Yoshinao Murata, C. C. Reddy

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

68 Citations (Scopus)

Abstract

Dielectric properties were compared between two kinds of low-density polyethylene (LDPE) composites prepared by adding near spherical MgO fillers with different diameters of around several ten nm and several m. In the whole range of temperature from 0°C to 90°C, the conductivity is decreased and the permittivity is increased by the addition of fillers, irrespective of their sizes. However, the decrement in the conductivity is more significant and permittivity increment is suppressed more in the case of the nm fillers. In addition, a drastic increase in dielectric loss factor, observed at low frequencies, is suppressed more significantly by the addition of the nm fillers. While the formation of packet-like charge, observed in LDPE, is suppressed by both fillers, the effect is far more significant in the nanocomposites. This means that the nano-fillers suppress the conductivity enhancement by the voltage application more effectively.

Original language	English
Article number	5361597
Pages (from-to)	1735-1742
Number of pages	8
Journal	IEEE Transactions on Dielectrics and Electrical Insulation
Volume	16
Issue number	6
DOIs	https://doi.org/10.1109/TDEI.2009.5361597
Publication status	Published - 2009 Dec 1

Keywords

Complex permittivity
Conductivity
Magnesium oxide
Polyethylene insulation
Polymer nanocomposites
Space charge distribution

ASJC Scopus subject areas

Electrical and Electronic Engineering

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Ishimoto, K., Kanegae, E., Ohki, Y., Tanaka, T., Sekiguchi, Y., Murata, Y., & Reddy, C. C. (2009). Superiority of dielectric properties of LDPE/MgO nanocomposites over microcomposites. IEEE Transactions on Dielectrics and Electrical Insulation, 16(6), 1735-1742. [5361597]. https://doi.org/10.1109/TDEI.2009.5361597

Superiority of dielectric properties of LDPE/MgO nanocomposites over microcomposites. / Ishimoto, Kazuyuki; Kanegae, Etsu; Ohki, Yoshimichi; Tanaka, Toshikatsu; Sekiguchi, Yoitsu; Murata, Yoshinao; Reddy, C. C.

In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 16, No. 6, 5361597, 01.12.2009, p. 1735-1742.

Research output: Contribution to journal › Article

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