正十二烷硫基硼酸钡摩擦学性能研究  

Preparation and Tribological Performance of Barium Dodecmercaborate

作　　者：曾小军[1] 曾明[1] 黄芳[2] 蒋银燕[1] 彭学东[1] 

机构地区：[1]长沙医学院基础系,湖南长沙410083 [2]长沙商贸旅游职业技术学院,湖南长沙410004

出　　处：《精细化工中间体》2011年第3期60-63,共4页Fine Chemical Intermediates

基　　金：湖南省教育厅资助项目(09c161;009c162;10c0446)

摘　　要：合成了一种油溶性化合物正十二烷硫基硼酸钡(Ba-SB),并将其作为润滑油添加剂,采用四球摩擦磨损试验机评价了其摩擦学性能。结果表明:该添加剂具有较好的油溶性能和热稳定性能。十二烷硫基硼酸钡使HVI500基础油的抗磨性能明显改善,承载能力得到明显提高,摩擦系数明显降低,采用扫描电镜对钢球磨斑表面形貌进行分析,加了该添加剂的钢球磨斑表面平整、光滑,犁沟浅且钢球磨斑表面有沉积物,从EDS谱图上可以看出摩擦副表面含有B、N、Cr、Fe、S元素。从XPS分析添加剂在摩擦过程中发生了摩擦化学降解反应,并在摩擦副表面生成了BaO,B2O3和FeB的个物质抗磨减摩膜,从而改善了其摩擦磨损性能。Oil-soluble barium dodecmercaborate（BDMB） was synthesized and its tribological properties in lubricating oil were evaluated using four-ball machine.The worn steel surface was investigated using SEM/EDS.The results indicated that the friction coefficient of the oil containing BDMB was decreased and the wear resistance and load-carrying capability were improved.The EDS and XPS analyses indicated that tribo-chemical reactions were involved in the friction progress,which generated a protective film containing BaO,B2O3 and FeB on the worn steel surface.This contributes to improving the anti-wear and extreme pressure properties of the HVI500 oil.

关 键 词：正十二烷硫基硼酸钡 摩擦学性能 润滑油添加剂 

分 类 号：O627[理学—有机化学]