The micro-aluminium trihydrate (ATH) and nano-alumina fillers in the silicone rubber (SR) significantly improve the electrical, thermal and mechanical properties. ATH fillers improved the resistance to the corona ageing and water droplet-initiated erosion. Scanning electron microscopy (SEM) analysis was carried out to understand degradation condition caused due to corona ageing and damage caused due to water droplet-initiated discharges. The inclusion of these fillers significantly altered the surface and bulk charge distribution characteristics of the polymer. A right shift is observed in the trap distribution characteristics. The reduced electric field threshold limit for space charge formation is observed with composites, due to increment in impurities/agglomerations with respect to increment in filler concentration. Performance of composites subjected to polarity reversal is improved on inclusion of nano-filler in addition to micro-filler. The inclusion of fillers enhanced the thermal conductivity and improved significantly thermal stability of the SR composite.

硅橡胶（SR）中的三水合微铝（ATH）和纳米氧化铝填料显着改善了电，热和机械性能。ATH填料提高了抗电晕老化和水滴引发的侵蚀的能力。进行了扫描电子显微镜（SEM）分析，以了解由于电晕老化引起的降解条件和水滴引发的放电引起的损伤。这些填料的加入显着改变了聚合物的表面和本体电荷分布特性。在陷阱分布特性中观察到右移。对于复合材料，由于相对于填料浓度的增加，杂质/团聚的增加，观察到用于形成空间电荷的降低的电场阈值极限。除微填充剂外，还包含纳米填充剂，可改善极性反转复合材料的性能。填料的加入增强了SR复合材料的导热性并显着改善了其热稳定性。