A comparison of molecular and nanodielectrics for HV insulation application

Abstract

Published work, including mechanistic studies, of molecular dielectrics, involving molecular additives, co-polymers, and miscible and immiscible polymer blends, in the 60s, 70s, and 80s, led to major improvements in breakdown and physical and mechanical properties of polymer-based insulation systems. Many new products were the result of these studies, resulting in improved designs and performance. A comparison is made beteeen these molecular dielectric materials, and new nanodielectrics, to assess each of their advantages and disadvantages. Based on this comparison, potential avenues for improvement of nanodielectrics are identified.

Self-healing in polymer nanodielectrics

“…A list of organic molecules which have been successful in inhibiting treeing and enhancing breakdown strength and endurance performance in XLPE was presented at CEIDP 2012 [5] and will still be of relevance for nanodielectrics. It was pointed out by one questioner after that talk that the molecules are mainly of low molecular weight and therefore likely to diffuse out of the XLPE or any other solid insulant.…”