Title :
Transient currents in discharge mode in ethyl-cellulose: polymethyl methacrylate compounds
Author :
Keller, J.M. ; Datt, S.C. ; Singh, Ranjit ; Jain, Vinita ; Verma, Girish
Author_Institution :
Dept. of Postgrad. Studies & Res. in Phys., Rani Durgavati Univ., Jabalpur, India
Abstract :
Transient currents were measured in discharge mode with ethyl-cellulose (EC):polymethyl methacrylate (PMMA) compound samples as a function of charging field, temperature, and polymer weight ratio. These currents have been found to follow the Curie-von Schweidler law characterized with different slopes in short and long time regions. The isochronals have been found to give rise to a peak located at 80°C. The corresponding activation energy values are found to increase with PMMA content and also with time of observation of discharge current
Keywords :
dielectric depolarisation; electrets; polymer blends; transients; Curie-von Schweidler law; PMMA content; activation energy; charging field dependence; discharge current; discharge mode; electret; ethyl-cellulose-PMMA copolymer; ethyl-cellulose: polymethyl methacrylate compounds; isochronals; polymer weight ratio; temperature dependence; transient currents; Current measurement; Dielectric losses; Fault location; Frequency; Glass; Mechanical factors; Physics; Polymer films; Solvents; Temperature;
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.1991.167205
