Heterostructured rGO/MoS2 to improve friction and wear performance of epoxy resins

Abstract In order to improve friction and wear performance of epoxy resins, the heterostructure of rGO/MoS 2 was synthesized by homogeneously growing molybdenum disulfide on the surface of in‐situ reduced graphene oxide (rGO) via the hydrothermal method. The effect of additive type on the microstructure of rGO/MoS 2 was discussed. And the obtained rGO/MoS 2 exhibits uniform heterostructure with 100–200 nm flower‐like MoS 2 nanoparticles scattering evenly on the surface of rGO when using PVP as the surfactant. Owing to robust hybrid structures and synergetic effects of rGO and MoS 2 , the friction interface temperature of rGO/MoS 2 /EP has dropped 37.2°C. And the average friction coefficient and specific wear rate of the composites with 0.60 wt% rGO/MoS 2 are just 0.55 and 7.6 × 10 −6 mm 3 N −1 m −1 , decreasing by 19.1% and 92.8% than those of epoxy resin. Highlights Flower‐like MoS 2 particles scatter evenly on the surface of in‐situ reduced GO. MoS 2 and rGO construct robust hybrid structure and form synergetic effects. The transfer film of hybrid rGO/MoS 2 reduces interactions between two surfaces. The friction interface temperature of rGO/MoS 2 /EP drops 37.2°C. The μ and w s of 0.60 wt%rGO/MoS 2 /EP are reduced by 19.1% and 92.8%.