MoS2 decorated with ZrO2 nanoparticles through mussel-inspired chemistry of dopamine for reinforcing anticorrosion of epoxy coatings

Faced with severe corrosion of casing in oil wells, the epoxy coating was applied to prevent corrosion. Based on the mechanism that the filler eliminated the internal stress during the curing process of the coating and prevented the penetration of corrosive medium into the coating, a new filler was successfully prepared by the hydrothermal method . When the molar ratio of the precursor of ZrO 2 to MoS 2 was 1.2:1, MoS 2 was uniformly modified with ZrO 2 through mussel inspired chemistry of dopamine. Introducing fillers into epoxy coatings, specifically, a proper content of 0.8 wt.% filler can greatly improve the mechanical properties and corrosion resistance of the coatings. The coating maintained the excellent corrosion resistance for 16 h under high temperature (108  °C) and high pressure (pressurized with CO 2 gas of 35 MPa), which would provide us a reliable anticorrosive coating for oil wells metal casing.