Formation and Distribution of Space-Charge in Cross-LinkedPolyethylene

The formation and distribution of space-charge in cross-linked
polyethylene (XLPE) sample are investigated by means of pressure wave propagation, infrared spectroscopy, and electrostatic force microscopy (EFM). The related mechanism of space-charge distribution and the structure of XLPE are discussed. The EFM images show that quite large quantitative space-charges locate at the surface of spherulites.