Investigation of electro thermal properties for polymer nano composite

Abstract

The purpose of this study is to investigate the enhancement of newlineelectrical and thermal properties of polymer nanocomposites of three different newlinecompositions such as Low Density Polyethylene (LDPE) and High Density newlinePolyethylene (HDPE) with and without Alumina (Al2O3) nanofiller. Also, newlinePolypropylene (PP) with and without Strontium Titanate (SrTiO3) nanofiller, newlineit is observed that the selected nanofiller has higher electrical permittivity and newlinegood thermal conductivity compared with base polymers (polymers newlinecommercially in service such as Polyethylene and Polypropylene), which newlinewere considered for preparation of polymer - nano composites. By embedding newlineAl2O3 and SrTiO3 in a polymeric matrix improves the thermal stability and newlinedielectric properties which could be effectively used for dielectric newlineapplications. newlineThe nanocomposite samples were prepared at 0wt.%, 1wt.%, newline3wt.%, 5wt.% and 7wt.% of nanofiller with base polymer. Morphology newlinecharacterization was carried out through Scanning Electron Microscopy newline(SEM) to study the dispersion and distribution of Alumina nanofiller in LDPE newline- Al2O3, HDPE Al2O3 and PP - SrTiO3 composite samples. Atomic Forced newlineMicroscopy analysis was conducted to investigate height profile of nanofiller newlinein PP SrTiO3 composites films. Also, Chemical characterization was carried newlineout through FTIR analysis for investigating compositional study of polymer newlinenano composite samples. Electrical Characterizations such as Partial newlineDischarge (PD), Dielectric strength, Permittivity and Dielectric loss were newlineinvestigated. Thermal Characterization like Thermal Conductivity, Thermo newlineGravimetric Analysis (TGA) and Differential Scanning Calorimetric (DSC) newlinewere conducted over the prepared samples. newline