Space charge and dielectric polarization in polymers

Author

Gupta, D. K Das

Author_Institution

Sch. of Inf., Univ. of Wales, Bangor, UK

Volume

1

fYear

2000

fDate

2000

Firstpage

24

Abstract

It is difficult to demonstrate unequivocally that the steady state conduction current in insulating polymers may originate from space charges because of the apparent field dependence of the charge mobility. However, the frequency dependent dielectric relaxation behaviour may be affected by the time dependent absorption currents in these materials. The irreversible electrical ageing in polymers under continued electrical stress can be detected by dielectric spectroscopic studies at very low frequencies

Keywords

ageing; carrier mobility; dielectric polarisation; dielectric relaxation; electrical conductivity; polymers; space charge; charge mobility; dielectric polarization; dielectric spectroscopic studies; electrical stress; field dependence; frequency dependent dielectric relaxation; insulating polymers; irreversible electrical ageing; polymers; space charge; steady state conduction current; time dependent absorption currents; very low frequencies; Absorption; Conducting materials; Dielectric materials; Dielectrics and electrical insulation; Frequency dependence; Optical polarization; Plastic insulation; Polymers; Space charge; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on

Conference_Location

Xi´an

Print_ISBN

0-7803-5459-1

Type

conf

DOI

10.1109/ICPADM.2000.875622

Filename

875622