Silicone resins filled with alumina nanoparticles for impregnation of electrical motors title

In the present paper, a new impregnation system for rotor and stator windings of medium and high power traction motors are obtained using silicone thermosetting resins and alumina nanoparticles. Silicone nanocomposites are prepared by combined dispersion techniques, namely mechanical mixing and sonication. Results about thermal, mechanical and electrical properties of silicone-alumina nanocomposites are shown and compared with those of unfilled matrix, used as a reference. The influence of different fillers content (1-7% in weight) on nanocomposites properties is fully discussed.