Title :
Effect of clay on the dielectric relaxation of ethylene propylene rubber using thermally stimulated discharge current measurements
Author :
Jeffery, A. ; Damon, D.H.
Author_Institution :
Electr. Inst. Res. Center, Connecticut Univ., Storrs, CT, USA
Abstract :
Clay filler in EPR (ethylene propylene rubber) causes a peak in the TSDC (thermally stimulated discharge current) spectra at about 40 °C. The peak displays dipole behavior and has an activation of 0.48eV. It seems to consist of one single relaxation peak and two smaller peaks which have not yet been analyzed. Reducing the clay concentration and particle size reduces the size of the peak. The polarization mechanism which causes this peak is not clear. It is possible that aggregation of the clay, adhesion of the clay to the polymer, or particle-particle interactions may affect this mechanism
Keywords :
adhesion; aggregation; clay; dielectric relaxation; ethylene-propylene rubber; filled polymers; particle size; thermally stimulated currents; 40 degC; EPR; TSDC; adhesion; aggregation; clay; dielectric relaxation; dipole behavior; ethylene propylene rubber; particle size; particle-particle interactions; polarization mechanism; thermally stimulated discharge current measurements; Cable insulation; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Electric variables measurement; Paramagnetic resonance; Rubber; Surface treatment; Temperature; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-0966-9
DOI :
10.1109/CEIDP.1993.378895
