新型无硫磷含氮杂环化合物的制备及其摩擦学特性

合成了一种新型不含硫、磷的氮杂环化合物润滑油添加剂,二(喹唑啉-4-酮)-N-亚甲基]正十二胺(DQMD),考察了其热稳定性和抗腐蚀性能,通过四球试验机和万能摩擦磨损试验机评价了其在液体石蜡中的摩擦磨损性能,并采用光学显微镜、扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)观察分析了磨损表面形貌及典型元素的化学状态.结果表明:所合成的添加剂具有良好的热稳定性、抗腐蚀性能和极压抗磨减摩性能.这归因于含添加剂的液体石蜡在摩擦过程中发生摩擦化学反应并生成由氧化亚铁/氧化铁、有机氮化物和含氮金属配合物等组成的混合边界润滑膜.

Preparation and Tribological Behaviors of Nitrogen-containing Heterocyclic Compounds without Sulfur and Phosphorus As Oil Additive

A new kind of nitrogen-containing heterocyclic compounds without sulfur and phosphorus,Di-(Quinazolin-4-one)-N-Methylene]-n-Dodecylamine(DQMD),was prepared.Tribological behavior of synthectic DQMD as a lubricating additive in liquid paraffin was evaluated on the four-ball tester and universal friction and wear tester.The anticorrosion property and thermal stability were also investigated.The worn steel surfaces were analyzed by means of optical microscope,scanning electron microscope and X-ray photoelectro...