Study on High Voltage Polymer Insulator with Nano-Titanium Filler

Abstract

High voltage polymer insulator material such as SiR/EPDM composite has become one of the important studies recently. The researchers discovered that SiR/EPDM with the formulation of 50:50 weight percentages ratio had yielded the optimal dielectric and mechanical strength. However, the studies on these balanced compositions with the combination of nano-filler are still few and not yet fully explored.  In this paper, SiR/EPDM composite was prepared with various loading concentration TiO₂ nano-filler. The loading concentration of TiO₂ nano-filler is 1 Vol%, 2 Vol%, 3 Vol%, 4 Vol% and 5 Vol%. The nano-composite samples were prepared via heated two rolls mill, MDR and hot press machines. The dielectric strength of nano-composites was analysed with 2-Parameter Weibull distribution. The experimental result revealed that the dielectric and tensile strength of SiR/EPDM containing 1 Vol% TiO₂ nano-filler gives the highest dielectric and tensile strength of 33.01 kV/mm and 10.52 MPa as compared with other loading concentration. Therefore, the inclusion of 1 Vol% TiO2 nano-filler into SiR/EPDM was significantly has enhanced the dielectric and tensile strength of SiR/EPDM composite.