electrical and thermal characterization of nanodielectrics for high voltage insulation applications

Abstract

newline quot Over the years, polymeric insulators have emerged with good dielectric and other physical properties with the help of increased familiarity with chemistry and physics and improved manufacturing technology. Especially, polymeric epoxy-based nanocomposites have tremendously grown in electronic and indoor-outdoor high-voltage (HV) insulation applications over the last two decades. Moreover, in the energy industry, various polymer materials, including thermoplastics, thermosets, glass, and natural fibers, have been employed because of their superior performance and long lifespan in extreme environments. Epoxy resins containing appropriate nano and micro-organic particles have gained popularity for practical applications in various electrical power apparatuses and systems. newline newline In this work, the ZnO nanofillers have been compared to alumina (Al2O3), beryllium oxide (BeO), boron nitride (BN), silica (SiO2), and titania (TiO2), in the finite element (FE)-based computational environment. The study shows promising electrical and thermal properties among all the comparatives. Concerning the findings, the work characterizes electrical and thermal properties the epoxy-based ZnO nanocomposites. The nanodielectrics have been analyzed to observe the effect of filler loading, nano-micro co-loading, and synthesis process. newline newline The prepared specimens had undergone a corona discharge test (a test setup identical to the CIGRE working group) subjected to various polarities to investigate discharge resistance and surface morphology. The corona discharge resistance has been tested using a 3D surface profilometer s roughness parameters and surface morphology. It also evaluates surface discharge resistance according to IEC 60112 with the help of Scanning Electron Microscopy (SEM). On the other hand, thermal stability has been studied according to ASTM E1356 and ASTM E1131 by Differential Scanning Calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. newline newline Test results showed that thermal stability a