抄録
In the bulk of crosslinked polyethylene insulated cables, there remain chemicals such as acetophenone, α-methylstyrene, and cumylalcohol. We have examined the effects of these remaining chemicals on the space charge evolution in low-density polyethylene (LDPE). A two-layered specimen consisting of a non-treated sheet and a sheet soaked into the chemical was examined. As an important conclusion obtained, it becomes clear that cumylalcohol traps charge carriers at the surface of LDPE, while neither acetophenone nor α-methylstyrene has this effect. The latter two chemicals assist carrier transport. It seems that the hydroxyl group of cumylalcohol has an important role to the carrier trapping in the LDPE in which cumylalcohol is present.
