The influence of heat treatment on the appearance and the evolution of the
space charge repartition within an epoxy resin polymer material is investig
ated. The space charge measurements were made using the thermal step method
(TSM) and the thermally stimulated depolarization currents (TSDC) method.
The results obtained show the behaviour of the space charge density after h
eat treatment and, in particular, it can be concluded that the charges are
stabilized in deep levels, (C) 2001 Society of Chemical Industry.