Title :
Influence of BaTiO3 additive and electrode material on space-charge formation in polyethylene. Evidence from thermal step space-charge measurements
Author :
Khalil, M. Salah ; Cherifi, A. ; Toureille, A. ; Reboul, J.-P.
Author_Institution :
Dept. of Electr. & Electron. Eng., Sultan Qaboos Univ., Muscat, Oman
fDate :
12/1/1996 12:00:00 AM
Abstract :
The effects of 5% wt BaTiO3 additive and of electrode material on space charge formation and electric field distribution in low density polyethylene (LDPE) were investigated using a thermal step technique. Space charge was formed at an average dc field of ~28 kV/mm and at 50°C. Results indicate that the addition of BaTiO3 to LDPE has considerably reduced the remanent space charge and electric field and changed their distribution patterns in the doped material when compared with the plain material. It is also shown that the remanent space charge and electric field in plain LDPE are strongly dependent on the type of electrode material
Keywords :
electric fields; electrodes; filled polymers; polyethylene insulation; space charge; 50 degC; BaTiO3; average dc field; distribution patterns; electric field distribution; electrode material; low density polyethylene; remanent space charge; space-charge formation; thermal step space-charge measurements; Additives; Dielectric materials; Electrodes; Polarization; Polyethylene; Polymers; Space charge; Temperature; Thermal engineering; Voltage;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
