Heterostructured <scp>rGO</scp>/<scp>MoS<sub>2</sub></scp> to improve friction and wear performance of epoxy resins
Yun Song, Chengjun Rong, Xing Feng, Yujian Liu, Yan Zhang
Abstract
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%.