Investigation on dielectric properties of HDPE with alumina nano fillers

Polymer plays a major role in the engineering applications. Though its usage is having major environmental issues, researchers still focusing on effective usage of polymers with respect to its abundance in availability, flexibility in processing, cost effectiveness and it also exhibits 30% – 40% operating life time of the costly other materials. Polymers by nature have low thermal conductivity and low dielectric constant which are non-favored properties for electrical applications. Recent researches involves in the identification of additives which helps to enhance the properties of polymers. Nano additives such as ceramics or metal oxide powder show the improvement in the properties of polymers. In this work a most commonly used polymer, High density polyethylene (HDPE) is considered for analysis. It is observed that when HDPE blended with Alumina (Al2O3) nano fillers at different weight percentage results in enhancement of Electrical properties. Finally, a conclusion is arrived that at 3 wt % Alumina with HDPE is having higher Capacitance value and at 5 wt % Alumina with HDPE is having better dielectric strength.