Electrical properties of field grading materials with non-linear filler

摘要

A non-linear behavior of resistively for electric field of the composites made with polybutadiene, SiC and Fe{sub}3O{sub}4 have been studied. It has been found that the non-linear behavior is ascribed to percolating paths formed by SiC particles. However, the non-linear behavior disappears when the conductive filler of Fe{sub}3O{sub}4 was loaded beyond the percolation threshold of F{sub}3O{sub}4.