油酸咪唑啉作为水基润滑剂的摩擦学性能  

Tribological Performance of Oleic Acid Imidazoline as Water-based Lubricants

作　　者：熊丽萍[1] 王威[1] 穆琳[1] 邱麟军 何忠义[1,2] 仇建伟[2] 

机构地区：[1]华东交通大学基础科学学院,江西南昌330013 [2]中国石油兰州润滑油研究开发中心,甘肃兰州730060

出　　处：《润滑与密封》2013年第12期6-10,22,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(21163006);江西省自然科学基金项目(20122BAB203011)

摘　　要：用油酸和二乙烯三胺合成油酸咪唑啉,在MRS-10A型摩擦磨损试验机考察其用作水基润滑剂的摩擦学性能。结果表明:所合成的添加剂作为水基润滑剂具有优良的承载能力和抗磨、减摩性能,其含量为2.0%时的极压值为1 048 N,在高载荷下,能够表现出很好的极压抗磨性能。用SEM扫描电镜分析了磨损表面的形貌,并用EDS对钢球表面的元素分布分析,用XPS对钢球表面化学成分进行分析。结果表明:在摩擦过程中,添加剂在摩擦副表面发生物理、化学吸附,N元素在摩擦副表面形成有机、无机氮复合膜,且长链脂肪酸链起到减少钢球与水中氧的直接接触的作用,从而阻止了钢球的摩擦磨损与氧化。Oleic acid imidazoline were synthesized with oleic acid and diethylenetriamine, and their tribological per- formance as water-based lubricants was investigated on the MRS-10A Type of friction and wear tester. Results indicate that the synthesized additive as water-based lubricant has excellent extreme pressure and anti-wear performance, and that the extreme pressure value is at 1 048 N with its content of 2. 0%. Under high load, very good extreme pressure and anti-wear performance can be displayed. Surface wear morphology, elemental distribution and the chemical composition of the steel ball surface were analyzed by using Scanning Electron Microscopy （SEM）, EDS and XPS separately. Results show that the frictional wear and oxidation of the steel ball is prevented because the physical and chemical adsorption occurs for the additives and the organic N and inorganic N composite film are formed on the surfaces of friction pair by N element in the process of friction, and the direct contact between the ball and the oxygen in water is reduced due to the effect of long chain fatty acid chain.

关 键 词：水溶性润滑油 添加剂 油酸咪唑啉 抗磨减摩性能 

分 类 号：TH117.1[机械工程—机械设计及理论]