Fluorination Treatment and Nano-Alumina Concentration on the Direct Current Breakdown Performance & Trap Levels of Epoxy/Alumina Nanocomposite for a Sustainable Power System

Epoxy resin is extensively used in gas insulated switches as a renewable energy coating due to its exceptional insulation, mechanical characteristics, and environmental friendliness. The higher resistivity of the epoxy causes numerous surface charges accumulate on result carrier injection high DC electric field, which may cause insulation failure power transmission system. In this study, various concentrations resins blended with nano-alumina (nano-Al2O3) at 0 wt%, 1 3 5 wt% were created. Afterwards, Al2O3 nanocomposites fluorinated by utilizing combination F2 N2 ratio 20% 0.05 MPa while maintaining temperature 40 °C. order improve dispersion, nano- was treated silane coupling agent called γ-aminopropyltriethoxysilane (KH550). Additionally, infrared spectroscopy based Fourier transform investigate structure chemical bonds. Furthermore, changes molecular chains verified FTIR spectra. breakdown strength resin\Al2O3 nano-composites showed that significantly improved after gas-phase fluorination. Moreover, strength. layer had charge-suppressing effect, reducing charge injected into polymer matrix epoxy-resin increasing capability. Thermally stimulated current (TSC) measurements indicate resin’s trap density are altered incorporation fluorination treatment (gas-phase). It also observed introducing lower concentration (e.g., wt%) can hinder growth space resin, thus enhancing deep traps’ energy. containing strong polarization C-F bonding would seize from electrodes, decreasing conductivity suppressing injection.