Improved Dielectric-Breakdown Property of POSS-Filled Epoxy

An experimental study has shown that the AC short-term dielectric breakdown potential of material specimens consisting of polyhedral oligomeric silsesquioxane (POSS) nanoparticles dispersed within an epoxy matrix exceeds the AC short-term dielectric breakdown potential of equal-thickness specimens of the neat epoxy. This finding is consistent with results of prior studies in which it was found that inorganic nanoparticle fillings yielded improvements in electrical, mechanical, or thermal properties.