This paper reported about the enhancement of electrical properties for polyethylene based nanocomposites materials. Nanocomposites (LDPE + BaTiO₃ ceramic) with different volume ratio of 0%, 1%, 3% and 5% were prepared by melt mixing method. Scanning Electron microscopy (SEM) results for nanocomposites materials shows that the nanofiller particle dispersed uniformly throughout the entire surface and there is no agglomeration of nanoparticles. BaTiO₃ ceramic nanoparticle structure and crystallite size were investigated using X-ray diffraction (XRD) studies. Using energy-dispersive X-ray spectroscopy (EDS), the chemical composition of the composite material has been determined. EDS can have determined the types of elements present in the sample and their relative concentrations. To assess the behavior of nanocomposites, experimental test was conducted to predict the electrical parameters such as dielectric breakdown strength, DC volume resistivity, dielectric constant and Dissipation factor. The dielectric strength was estimated using a feed forward neural network (FFNN) and Artificial Neural Network and Fuzzy Inference system (ANFIS) technique under various conditions and filler percentages. From the test results, it was observed that nanocomposites with 3% wt has the highest dielectric strength. In Weibull analysis, feed forward neural network (FFNN) and Artificial Neural Network and Fuzzy Inference system (ANFIS) predicted that with the inclusion of nanofiller, the electrical breakdown strength of nanocomposite materials was increased. The results show that, dielectric permittivity and dissipation factor (tan delta) of the nanocomposites materials decreased and increased correspondingly with increase in frequency. Further increase in mixing proportion of nanocomposites, it was found that the inter particle distance is decreased due to that the mobility of charge carrier is increased and the material loses its dielectric property. From the experimental test results, it was found that LDPE/BaTiO₃ ceramic filler nanocomposites materials with 3% wt have better electrical properties compared to neat LDPE.

Keywords: Polyethylene, Barium titanate ceramic filler, Nanocomposites, Weibull analysis, Dielectric property, Permittivity, Dissipation factor.