Title :
The effect of temperature cycling on the DC conductivity of polyethylene
Author :
Khalil, M. Salah ; Henriksen, M. ; Henk, P.O.
Author_Institution :
Danish Electr. Res. Inst., Lyngby, Denmark
Abstract :
The effect of temperature cycling between 40°C and 80°C during combined temperature and electric field conditioning on the DC conductivity of LDPE (low-density polyethylene) has been studied and compared with DC conductivity results using a constant temperature of 80°C and an identical sample under the same experimental conditions. Results indicate that the drop in the current level at 80°C after ten days of conditioning is lower in the thermally cycled sample than in the sample subjected to constant temperature. The difference is attributed to different morphological changes in each sample due to different thermal treatment
Keywords :
electrical conductivity of solids; heat treatment; organic insulating materials; polymer structure; polymers; 40 to 80 C; DC conductivity; LDPE; effect of temperature cycling; electric field conditioning; morphological changes; Cable insulation; Conducting materials; HVDC transmission; Manufacturing processes; Polyethylene; Polymers; Temperature; Testing; Thermal conductivity; Voltage;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1992., Proceedings of the 4th International Conference on
Conference_Location :
Sestri Levante
Print_ISBN :
0-7803-0129-3
DOI :
10.1109/ICSD.1992.224962
