论文部分内容阅读
合成了3种不同连接链的双咪唑离子液体;采用核磁共振谱仪表征了其结构,采用SRV-IV型摩擦磨损试验机评价了其在变温及250℃恒温下的摩擦学性能;并采用扫描电镜(SEM)和X射线光电子能谱仪(XPS)分析了磨斑表面形貌和主要元素的化学状态.结果显示:同变温摩擦磨损试验相比,恒温摩擦磨损试验能更为有效地体现不同双咪唑离子液体的高温摩擦学性能差异;与此同时,烷基链连接的双咪唑离子液体的减摩抗磨性能明显优于醚链连接的双咪唑离子液体,且缩短双咪唑离子液体的连接链长度有利于提高其摩擦学性能.
Three different imidazolium ionic liquids were synthesized. Their structures were characterized by nuclear magnetic resonance spectroscopy. Their tribological properties were evaluated by SRV-IV friction and wear testing machine at constant temperature and constant temperature of 250 ℃. Scanning SEM and XPS were used to analyze the surface topography and the chemical state of the main elements.The results show that the friction and wear tests at constant temperature can reflect more effectively than the friction and wear tests At the same time, the bi-imidazolium ionic liquids with alkyl chain linkages have better anti-friction and anti-wear properties than bisimidazolium ionic liquids linked with ether chains and shorten the connection of bisimidazolium ionic liquids Chain length is conducive to improve its tribological properties.