一种自修复功能添加剂的制备及性能研究

发布时间：2018-03-21 07:19

本文选题：添加剂　切入点：减摩抗磨　出处：《润滑与密封》2017年06期 　论文类型：期刊论文

【摘要】：以有机钼作为自修复添加剂的主要功能成分,加入抗氧剂和适量的极压抗磨剂,制备一种摩擦副自修复功能添加剂;通过四球摩擦试验、齿轮台架试验考察其性能,使用扫描电镜(SEM)和X射线光电子能谱仪(XPS)等分析其作用机制。结果表明:该添加剂具有优良的减磨和摩擦副自修复性能;在中低负载下该自修复添加剂主要通过在摩擦副表面生成物理、化学吸附膜发挥减摩作用;随着负载的增加和温度的升高,添加剂中的有机钼和硫磷系极压抗磨剂组分发生分解并与摩擦副表面的金属反应生成二硫化钼、磷酸铁、硫化亚铁、三氧化钼等沉积物,从而发挥良好的润滑与抗磨作用;在高负载下,该自修复添加剂主要通过微流变作用实现磨损表面的平整与自修复。
[Abstract]:Taking organic molybdenum as the main functional component of self-repairing additive, adding antioxidant and proper amount of extreme pressure antiwear agent, a kind of self-repairing function additive of friction pair was prepared, and its performance was investigated by four-ball friction test and gear bench test. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to analyze the mechanism. The results show that the additive has excellent antiwear and self-repairing properties of friction pairs. The self-repairing additive is mainly used to reduce friction by forming physical and chemical adsorption film on the surface of friction pair under low and medium load, and with the increase of load and temperature, The organic molybdenum and sulfur-phosphorus extreme pressure antiwear agent components decompose and react with the metal on the surface of friction pair to form deposits such as molybdenum disulfide, iron phosphate, ferrous sulfide and molybdenum trioxide, which play a good lubricating and antiwear effect. Under high load, the self-repairing additive can smooth and self-repair the worn surface mainly by micro-rheological effect.
【作者单位】：东莞太平洋博高润滑油有限公司;华南理工大学材料科学与工程学院;
【基金】：东莞市产学研合作项目(2013509112201)
【分类号】：TH117

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