Xu Xiaoxuan, Jiao Songlong, Liu Zhengquan, Liu Lei
School of business and Trade, Nanjing Institute of Industry Technology Nanjing 210023 People's Republic of China.
School of Mechanical Engineering, Southeast University Nanjing 211189 People's Republic of China
RSC Adv. 2020 Jun 1;10(35):20579-20587. doi: 10.1039/d0ra02014a. eCollection 2020 May 27.
A porous MoS-polyhedral oligomeric silsesquioxane (POSS) nanohybrid was prepared from octavinyl-POSS nanoparticles and MoS nanosheets for the first time, the structure and composition of which were confirmed by X-ray powder diffraction (XRD), Fourier-transform infrared spectra (FTIR), scanning electron microscopy (SEM), energy dispersive spectra (EDS) and thermal gravimetric analysis (TGA). As a comparison, MoS nanosheets, octavinyl-POSS and MoS-POSS nanohybrid were used as lubricating additives for liquid paraffin (LP), which decreased the friction coefficients of LP by 7.8% (MoS), 14.1% (octavinyl-POSS), and 18.8% (MoS-POSS). Compared with MoS and octavinyl-POSS, the MoS-POSS nanohybrid can be dispersed in organic solvents more homogeneously without adscititious dispersants or surfactants due to its better organic compatibilities. SEM and EDS analyses indicate that a synergistic frictional effect is responsible for the improved friction-reduction and anti-wear behavior.
首次由八乙烯基倍半硅氧烷（POSS）纳米颗粒和二硫化钼（MoS）纳米片制备了一种多孔MoS-倍半硅氧烷多面体低聚硅氧烷（POSS）纳米杂化物，其结构和组成通过X射线粉末衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、能量色散谱（EDS）和热重分析（TGA）得以证实。作为对比，二硫化钼纳米片、八乙烯基倍半硅氧烷和MoS-POSS纳米杂化物被用作液体石蜡（LP）的润滑添加剂，它们使液体石蜡的摩擦系数分别降低了7.8%（二硫化钼）、14.1%（八乙烯基倍半硅氧烷）和18.8%（MoS-POSS）。与二硫化钼和八乙烯基倍半硅氧烷相比，MoS-POSS纳米杂化物因其更好的有机相容性，无需添加额外的分散剂或表面活性剂就能更均匀地分散在有机溶剂中。扫描电子显微镜和能量色散谱分析表明，协同摩擦效应是摩擦降低和抗磨性能改善的原因。
