Ms. Khalil et al., INFLUENCE OF BATIO3 ADDITIVE AND ELECTRODE MATERIAL ON SPACE-CHARGE FORMATION IN POLYETHYLENE - EVIDENCE FROM THERMAL STEP SPACE-CHARGE MEASUREMENTS, IEEE transactions on dielectrics and electrical insulation, 3(6), 1996, pp. 743-746
The effects of 5% wt BaTiO3 additive and of electrode material on spac
e charge formation and electric field distribution in low density poly
ethylene (LDPE) were investigated using a thermal step technique. Spac
e charge was formed at an average de field of similar to 28 kV/mm and
at 50 degrees 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 com
pared with the plain material. It is also shown that the remanent spac
e charge and electric field in plain LDPE are strongly dependent on th
e type of electrode material.