Effects of filler orientations on electric field of nanodielectrics

Abstract

Composite containing fillers with at least one dimension less than 100 nm and typically less than 30 nm are called nanodielectrics, which have potential to improve the electrical performance. Micro size fillers introduction normally reduces the breakdown strength of the composites and this is due to the orientations of the fillers, which leads to reduced breakdown strength of the material. Compared to conventional composites, nanocomposites have smaller fillers which help to improve the breakdown strength. Nanoparticles can disrupt the continuity of the path provided to the charge carriers and decrease the possibility of overlapping of the local conductive regions and it is leading to an improvement in the breakdown strength. In particular, this shows that nanofiller alignment can improve the electric field breakdown strength and recoverable energy density. At the same time, filler alignment can reduce the leakage current, in these dielectric nanostructured composites. The presence of these fillers can improve the dielectric properties and electrical conductivity. This research analyses the performance of nanoclay filler in nanodielectrics through simulation using Finite Element Method Magnetics (FEMM). This is to further understand the relationship between nanodielectric and the nanoclay platelets. The analysis shows that the filler shape and orientations will result in increased electric field intensity. This is to define the effects of filler on the electric field of nanodielectrics.