Effect of anti-oxidants on space charge in low-density polyethylene

Polyethylene is widely used as insulating material for power cables. Recently, much attention have been paid to the developments of extruded DC power cables. Many papers have been published on space charge in low-density polyethylene (LDPE) and cross-linked polyethylene (XLPE). However, space charge behavior and charge dynamics are very complicated and sensitive to various factors such as physical/chemical structures of LDPE, additives, interfacial conditions, applied field, temperature, and so on. They have not been well understood yet. More research work on space charge behavior in LDPE and effects of these factors on space charge behavior are required to develop high performance DC cables. In this paper, we investigated the effect of anti-oxidants on space charge behavior and DC current in LDPE.