Title :
Effect of the corona discharge in different atmospheres on the thermally stimulated charge injection of Teflon FEP
Author :
Raposo, Maria ; Ribeiro, P.A. ; Giacometti, Jose A. ; Bento, M. Amalia ; Mendes, J. N Marat
Author_Institution :
Faculdade de Ciencias e Technologia, Univ. Nova de Lisboa, Portugal
Abstract :
It was shown previously that negative corona treatment of Teflon FEP decreases the thermal stability of the electrets. Thermally stimulated discharge measurements of treated samples presented, besides the usual peak of 210°C, a new broad current peak in the temperature range of 100 to 160°C. Further investigations were carried out on N 2, CO2, O2, and dry air in order to study the effect of the corona atmosphere on the corona treatment. In N 2 no effect was observed, while for CO2 and O2 a well-defined current peak appears with a maximum at 120°C. In dry air no significant differences were observed when compared with the results for normal air
Keywords :
corona; electrets; polymers; thermally stimulated currents; 100 to 210 degC; CO2; N2; O2; Teflon FEP; broad current peak; corona atmosphere; corona discharge; discharge measurements; dry air; electrets; thermal stability; thermally stimulated charge injection; Atmosphere; Atmospheric measurements; Corona; Current measurement; Electrets; Polarization; Polymers; Surface discharges; Temperature distribution; Thermal stability;
Conference_Titel :
Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)
Conference_Location :
Berlin
Print_ISBN :
0-7803-0112-9
DOI :
10.1109/ISE.1991.167295
