非硫磷有机钼添加剂的制备及其摩擦学性能研究

发布时间：2018-05-09 20:51

本文选题：非硫磷 + 有机钼添加剂　；参考：《润滑与密封》2017年04期

【摘要】：采用二羟乙基十八胺与钼酸铵作为原材料,合成一种新型非硫磷有机钼添加剂N-十八烷基亚胺二乙醇钼酸二酯(HOAM),并利用红外光谱仪(IR)及电感耦合等离子光谱发生仪(ICP)和元素分析(EA)对其进行结构表征,通过热重分析(TGA)研究其热稳定性。以锂基脂为基础脂,应用四球摩擦磨损试验机考察HOAM与市售的Molyvan 855添加剂在锂基脂中的抗磨减摩性能及极压承载能力;应用扫描电子显微镜(SEM)和X射线近边结构吸收光谱(XANES)分析其磨斑形貌及摩擦膜的钼元素的化学组成。试验结果表明:HOAM具有较好的热稳定性,减摩性能和极压性能良好,其作为添加剂添加在锂基脂中可使钢球磨斑直径减小、磨斑形状变规则、犁沟变浅;非硫磷有机钼添加剂HOAM在摩擦过程中在摩擦副表面发生化学反应,生成了含Mo O-42的润滑膜,相比Molyvan 855具有更好的抗磨减摩性能。
[Abstract]:Dihydroxyethyl octadecylamine and ammonium molybdate were used as raw materials. A novel non-sulfur phosphorous organic molybdenum additive, N-octadecyl imine diethylmolybdate diester (HOAMN), was synthesized and characterized by IR (IR), ICP (inductively coupled plasma spectrometer) and elemental analysis (EAA). Its thermal stability was studied by thermogravimetric analysis (TGA). Based on lithium-base lipids, the antiwear and antifriction properties and extreme pressure bearing capacity of HOAM and Molyvan 855 additives in lithium-base lithium-base lipids were investigated by four-ball friction and wear tester. Scanning electron microscopy (SEM) and X-ray near edge structure absorption spectra (XANES) were used to analyze the morphology of wear spot and the chemical composition of molybdenum in the friction film. The experimental results show that the weight HOAM has good thermal stability, good antifriction and extreme pressure properties. Adding it as additive in lithium-base grease can reduce the diameter of grinding spot, change the shape of grinding spot and shallowen the furrow. The non-sulfur-phosphorous organic molybdenum additive (HOAM) was chemically reacted on the surface of friction pair during friction and formed a lubricating film containing MoO-42. Compared with Molyvan 855, it has better antiwear and antifriction properties.
【作者单位】：上海交通大学化学化工学院;中国科学院高能物理研究所北京同步辐射中心;
【基金】：北京同步辐射装置资助项目(SR06033)
【分类号】：TE624.82

【参考文献】