AC breakdown strength of epoxy-boron nitride nanocomposites: Trend & reproducibility

In this paper, the results of AC breakdown tests on epoxy - boron nitride nanocomposites are presented. Composites were produced with two different synthesis techniques and the same filler concentration. The main goal is to evaluate the reproducibility of the experimental results as it is one of the most important issues regarding nanotechnology in the field of polymers. Interestingly, the results show a high consistency and the same trend regardless the synthesis technique and thus, the particle distribution. Composites with relatively low filler concentrations exhibit a higher breakdown strength than neat epoxy. As the filler concentration increases, however, composite performance regarding breakdown strength deteriorates.