Polarization effects in high density polyethylene containing an antioxidant

The method of thermally stimulated discharge currents is used to study trapped charge in high-density polyethylene containing an antioxidant. The charge stability increases when polarization temperature increases. If the sample is not heated during the TSDC experiment to the melting point, a large current is released during the cooling of the sample. The currents released in the TSDC experiments are still very large. From the current shape and activation energy value for different annealing times, it was concluded that during cooling and annealing part of the charge moves from deeper traps toward the shallow traps. If the stored charge is neither too big nor too small the TSDC spectrum is complex and is sensitive to all physical transformations in the sample