Open-Circuit Thermally Stimulated Discharge Currents Investigation In Polyethelene Terephthalate

 

Z. Guebaili, N. Benrekaa*

Université des Sciences et Technologies Houari Boumedienne BP. 32, El Alia, 16111 Bab Ezzouar, Algiers, Algeria

* Corresponding author. E-mail: nbenrekaa@gmail.com

Received: 22 November 2012; revised version accepted: 26 March 2013

 

Abstract

     Open-circuit Thermally Stimulated Discharge Currents in Polyethylene Terephthalate films have been investigated in the poling temperature range of 30 to 150°C. This material shows a negative TSDC intensity peak at approximately 80°C originated from dipolar process and another around 110°C (r-peak) attributed to the manifestation of space-charge effects. Since this polymer is a commercially available and well known material, the main focus is set on the thermo-electrical properties. Therefore, the dependence of the polarization on the poling temperature has been utilized to look at the polarization, which has been stored during the poling process. These measurements show an upper limit for the polarization.

 

Keywords: Thermally Stimulated Discharge Currents (TSDC); PETP; Corona poling.

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