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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.
A novel sulfur-free and phosphorus-containing nitrogen heterocyclic compound lubricant additive was synthesized. Its thermal stability was investigated by using bis (quinazolin-4-one) -N-methylene] The tribology properties and anti-corrosion properties were evaluated by four-ball test machine and universal friction and wear tester. The tribological properties of the liquid paraffin wax were evaluated by optical microscopy, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) The morphology of the wear surface and the chemical state of the typical elements were analyzed.The results showed that the synthesized additives had good thermal stability, corrosion resistance and extreme pressure anti-wear and anti-friction properties.This was attributed to the frictional properties of the liquid paraffin with additives Frictional chemical reaction occurs during the process and generates a mixed boundary lubricant film composed of ferrous oxide / iron oxide, organic nitrides and nitrogen-containing metal complexes.