十二烷氧基硼酸镧抗磨减摩添加剂的合成及摩擦学性能研究  

Synthesis and Tribological Properties of Lanthanum Dodecoxylborate as Antiwear and Friction-reducing Additive

作　　者：李芬芳[1] 梁逸增[1] 黄伟九[2] 黄可龙[1] 王治军[3] 

机构地区：[1]中南大学化学化工学院,长沙410083 [2]重庆工学院材料科学与工程系,重庆400050 [3]清华大学环境科学与工程系,北京100084

出　　处：《润滑与密封》2005年第1期52-54,共3页Lubrication Engineering

摘　　要：合成了十二烷氧基硼酸镧(简称LaDOB)。以十二烷氧基硼酸镧为添加剂,采用四球实验机和环 -块摩擦实验机评价了其抗磨减摩性能。结果表明LaDOB使HVI500基础油的抗磨性能得到明显改善, 400N负荷下长磨 60min时,磨斑直径从基础油的 1 76mm降为含添加剂时的 0 65mm;其承载能力明显提高,最大无卡咬负荷从基础油的 558N增加到含 3 0%添加剂时的 834N,同时摩擦因数明显降低。X 射线光电子能谱 (XPS)分析表明,添加剂在摩擦过程中发生了摩擦化学反应,生成的产物La2O3 和B2O3 沉积在摩擦副表面,形成抗磨减摩膜,从而改善其摩擦磨损性能。Lanthanum dodecoxylborate (LaDOB) lube additive was prepared. The anti-wear and friction-reducing properties were evaluated by using four-ball and ring-on-block tribotesters. The results indicate that the wear scar diameter is decreased from 1.76 mm to 0.65 mm, the maximum non-seizure load is increased from 558 N to 834 N and the friction coefficient is decreased by the additive. The XPS analyses show that LaDOB take a tribochemical reaction and the products of La2O3 and B2O3 deposited on the rubbing surface to play an anti-wear and friction-reducing role.

关 键 词：烷氧基 十二烷 硼酸 合成 抗磨减摩添加剂 B2O3 摩擦化学反应 摩擦学性能 实验机 摩擦副 

分 类 号：TH117[机械工程—机械设计及理论] TQ463[化学工程—制药化工]