Enhanced functional properties of CeO2 modified graphene/epoxy nanocomposite coating through interface engineering

Abstract This paper reports significant enhancement of corrosion resistance and electrical properties waterborne epoxy coatings through additions ceria modified graphene. Results showed that particles were uniformly distributed covalently bonded onto the surface A dense interface layer was formed between graphene matrix by aliphatic ether bonds. The composite coating with a content 0.5 wt% exhibited best highest impedance modulus (e.g., 103 Ω cm2 for damaged coating) lowest rate 0.002 mm/year). excellent is related to barrier effect inhibition on metal corrosion. Moreover, low percolation threshold 0.231 vol% its conductivity reached 10−5 S/m when 0.5 wt%.