Self-adaptive epoxy protective coating filled with MoS2@PMMA core-shell hybrid and its excellent tribological and anticorrosive properties

Pure epoxy resin (EP) coating exhibits poor wear resistance and weak corrosion protection capability, resulting in short service life. In this work, MoS2@polymethyl methacrylate (MoS2@PMMA) core-shell hybrid was firstly
synthesized by emulsion polymerization, which demonstrated stability in high humidity conditions attributing to reduced MoS2 oxidation. As an additive, the tribological performances of MoS2@PMMA/EP coating at different
humidity and its anti-corrosive property were explored. Under high humidity, the MoS2@PMMA/EP coating exhibited the lowest friction coefficient (0.36) compared with EP coating (0.49) and MoS2/EP coating (0.56).Especially, the wear rate of the MoS2@PMMA/EP reduced by 95.07 % and 93.22 % as to EP coating and MoS2/ EP coating, respectively. Furthermore, electrochemical tests showed the MoS2@PMMA could enhanced the corrosion resistance of the EP matrix.