Critical exponent of dielectric breakdown strength of composites made with polyethylene and fillers

Author

Tomimura, T. ; Tanimoto, N. ; Hishida, M. ; Nakamura, S. ; Okamoto, T.

Author_Institution

Dept. of Electron., Mie Univ., Tsu, Japan

Volume

3

fYear

2003

fDate

1-5 June 2003

Firstpage

966

Abstract

Electrical properties at high electric fields of composites have not been investigated based on the percolation theory in depth. Works on numerical modeling of dielectric breakdown have been done for a random resistor-capacitor network. The aim of this paper is to discuss the dielectric breakdown phenomena of the composites made with polyethylene and fillers such as carbon black, Fe₃O₄ and SiC. It has been found that the dielectric breakdown strength of the composites is described by a function of a power law of the distance from the volume fraction of filler to the percolation threshold with the critical exponent of 0.9.

Keywords

carbon; composite materials; critical exponents; dielectric materials; electric breakdown; iron compounds; percolation; polyethylene insulation; silicon compounds; C; Fe₃O₄; SiC; carbon black; critical exponents; dielectric breakdown; electric fields; electrical properties; fillers; percolation theory; percolation threshold; polyethylene; power law; random resistor-capacitor network; Composite materials; Conducting materials; Conductivity; Dielectric breakdown; Dielectric materials; Dielectrics and electrical insulation; Numerical models; Plastic insulation; Polyethylene; Silicon carbide;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on

ISSN

1081-7735

Print_ISBN

0-7803-7725-7

Type

conf

DOI

10.1109/ICPADM.2003.1218582

Filename

1218582