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

Abstract

AbstractIn order to improve friction and wear performance of epoxy resins, the heterostructure of rGO/MoS2 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/MoS2 was discussed. And the obtained rGO/MoS2 exhibits uniform heterostructure with 100–200 nm flower‐like MoS2 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 MoS2, the friction interface temperature of rGO/MoS2/EP has dropped 37.2°C. And the average friction coefficient and specific wear rate of the composites with 0.60 wt% rGO/MoS2 are just 0.55 and 7.6 × 10−6 mm3 N−1 m−1, decreasing by 19.1% and 92.8% than those of epoxy resin.Highlights Flower‐like MoS2 particles scatter evenly on the surface of in‐situ reduced GO. MoS2 and rGO construct robust hybrid structure and form synergetic effects. The transfer film of hybrid rGO/MoS2 reduces interactions between two surfaces. The friction interface temperature of rGO/MoS2/EP drops 37.2°C. The μ and ws of 0.60 wt%rGO/MoS2/EP are reduced by 19.1% and 92.8%.