摘要
以三乙醇胺和蓖麻油为原料,合成了一种环境友好酰胺型改性蓖麻油润滑添加剂(NCO),利用红外光谱对其主要官能团进行了鉴定。分别采用四球和SRV摩擦磨损试验机考察了以菜籽油为基础油,以NCO为添加剂时对钢-钢摩擦副和钢-铝摩擦副抗磨减摩性能的影响,采用扫描电子显微镜观察分析钢球磨斑表面的形貌,同时对铝合金磨痕进行X射线光电子能谱和电子探针分析,探讨了酰胺型改性菜蓖麻油润滑添加剂的抗磨减摩机理。结果表明,以酰胺型改性蓖麻油为添加剂,以菜籽油为基础油时,钢-钢摩擦副和钢-铝摩擦副均表现出良好的抗磨减摩作用,这是由于酰胺型改性蓖麻油添加剂以其具有较强极性而更容易在金属表面形成强吸附膜,同时在摩擦过程中形成了含有机氮、亚硝基或硝酸根的复杂氮化物的高强度聚合物膜。
A type of new environmentally friendly lube additive amide type modified castor oil was synthesized and characterized by infrared spectroscopy. Its effects on the friction and wear behaviors of steel-steel and steel-aluminum alloy systems were investigated with a four-ball machine and an optimal SRV friction and wear tester, respectively. The morphographies of the worn surfaces were analyzed by means of scanning electron microscopy （SEM）. The worn surfaces of the 2024A1 alloy block were analyzed by means of X-ray photoelectron spectroscopy（XPS） and electron probe micro analysis（EPMA）. The results showed that the amide type modified castor oil as additive could obviously decrease the wear rate and friction coefficient of steel pair and steel-aluminum frictional pair. Its lubrication mechanism is inferred that a high strength adsorption film and complicated organic polymer film containing organic nitrogen, nitrous group and nitrous acid group formed on the worn surface due to the high polarity of the additive molecules and tribochemistry reaction.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2009年第B09期78-81,共4页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家自然科学基金项目(50275147)
重庆市科技攻关项目(CSTC
2008AC4080)
重庆市自然科学基金项目(CSTC
2007BB4097)
教育部"新世纪优秀人才支持计划"项目(NCET-04-1002)
后勤工程学院青年基金项目资助
