Experiments were conducted to measure the ac breakdown strength of 0.5 mm, thick epoxy alumina nanocomposites with different filler concentrations of 0.1, 1 and 5wt%. The experiments were performed as per the ASTM D 149 standard. It was observed that the ac breakdown strength was marginally lower up to 1wt% filler concentration and then increased at 5wt% filler concentration as compared to the unfilled epoxy. The Weibull shape parameter (β) increased with the addition of nanoparticles to epoxy. The dependence of thickness on the ac breakdown strength was also analyzed by conducting experiments on 1mm and 3mm thick unfilled epoxy and epoxy alumina nanocomposites of 1wt% and 5wt% filler concentrations. The DSC analysis was done to understand the material properties at the filler resin interface in order to study the effect of the filler concentration and thereby the influence of the interface on the ac breakdown strength of epoxy nanocomposites.
展开▼
机译：进行实验以测量0.5毫米厚的环氧氧化铝纳米复合材料的交流击穿强度，其中填充剂的浓度分别为0.1％，1％和5％（重量）。根据ASTM D 149标准进行实验。观察到，与未填充的环氧树脂相比，ac击穿强度在直至1wt％的填料浓度时略微降低，然后在5wt％的填料浓度时提高。威布尔形状参数（β）随着向环氧树脂中添加纳米颗粒而增加。厚度对交流击穿强度的依赖性还通过在1mm和3mm厚的填充浓度为1wt％和5wt％的未填充环氧树脂和环氧氧化铝纳米复合材料上进行实验来分析。进行DSC分析以了解填料树脂界面处的材料性能，以便研究填料浓度的影响，从而研究界面对环氧纳米复合材料交流击穿强度的影响。
展开▼
