The effect of Free Radical Scavenger on space charge distribution in polytethylene during electrical aging

Electrical aging of polyethylene can be inhibited effectively by incorporation of a free radical scavenger (FRS), and then the space charge distribution in the polyethylene sample is improved significantly. Under DC stress and short-circuited case, the total amount space charge was linearly increased with aging time. Considering to the degradation of polyethylene under other types of stresses, the effects of the FRS of reducing the production of space charge and inhibiting electrical aging in polyethylene were discussed.