Field-dependent electric conductivities of silicone rubbers deduced from measured currents and surface potential decay characteristics
Artikel i vetenskaplig tidskrift, 2019

Measurements of DC electric conductivities of four types of silicone rubber-based polymers for use in high voltage insulation systems of power components are reported. The field dependences of the conductivities obtained by two different techniques, namely by utilizing steady-state currents through materials’ samples placed between metallic electrodes and by employing surface potential decay characteristics in an open circuit configuration, are compared and discussed. It is shown that the surface potential decay technique allows for a wider range of electric field strength and reduces the time span of the measurements.

electric conductivity

Silicone rubber

surface potential decay

charging current


Shahid Alam

Chalmers, Elektroteknik, Högspänningsteknik

Yuriy Serdyuk

Chalmers, Elektroteknik, Elkraftteknik

Stanislaw Gubanski

Chalmers, Elektroteknik, Elkraftteknik

International Journal of Polymer Analysis and Characterization

1023-666X (ISSN) 1563-5341 (eISSN)

Vol. 24 1 54-62




Textil-, gummi- och polymermaterial

Annan elektroteknik och elektronik



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