Tribological modification data of Hydrogenated nitrile rubber Nanocomposites for water-lubricated bearing of ship stern shaft
A water-lubricated rubber bearing (WLRB) of ship stern shaft often operates under harsh conditions, which requires a higher tribological performance for bearing materials. Uniformly dispersed nano-fillers can significantly improve the various properties of rubber materials, but nano-fillers are prone to agglomerate in the process of operation, which affects the modification effect. In this paper, a solution blending masterbatch method was used to prepare Hydrogenated nitrile rubber (HNBR) nanocomposites and the modification effects of ultra-high molecular weight polyethylene (UHMWPE), Nano Graphite (NG) powder, Nano molybdenum disulfide (Nano-MoS2) and Graphite fluoride (GF) on HNBR basic formulation were studied. The results show that solution blending masterbatch method enables the fillers to be evenly dispersed in the HNBR matrix, and UHMWPE can significantly improve the heavy-duty water lubrication friction properties of the composites. GF has the best modification effect on high-speed water lubrication friction performance, hysteresis heat generation, tensile property and wear resistance. Nano-MoS2 can significantly improve the vulcanization performance. The research work on the tribological modification of water-lubricated bearing bush rubber material will be of great significance to reduce the friction coefficient of water lubricated bearing of ship stern shaft and improve the wear resistance.