β-环糊精与油酸包合物的制备和摩擦学性能  

Preparation and Tribological Performance of Complex of β-Cyclodextrin and Oleic Acid

作　　者：关集俱[1] 许雪峰[1] 何荣军[2] 黄亦申 彭伟[1] 

机构地区：[1]特种装备制造与先进加工技术教育部/浙江省重点实验室(浙江工业大学),杭州30014 [2]浙江工业大学生物与环境工程学院,杭州310014

出　　处：《材料研究学报》2013年第1期85-90,共6页Chinese Journal of Materials Research

基　　金：国家自然科学基金51075366;浙江省自然科学基金Y1100935;浙江省教育厅科研Y201018486资助项目~~

摘　　要：合成β-环糊精与油酸的包合物,以包合物作为一种润滑添加剂,用四球法研究了载荷、摩擦时间及添加量对其摩擦学性能的影响,并分析了润滑机理。结果表明,在196、294和392 N载荷下,添加包合物的润滑液的摩擦系数均随时间的增加逐渐减小。在各种含量下,包合物的抗磨性能都优于β-CD和油酸的,含量为0.9%时,添加包合物的润滑液具有最佳的减摩效果。在摩擦过程中,包合物主体β-环糊精被分解,释放客体油酸,油酸通过化学吸附形成羧酸皂膜起主要润滑作用,β-环糊精的分解片段形成羟基吸附膜和碳沉积膜起辅助促进作用,二者共同作用形成的复合润滑膜具有良好的摩擦学性能。The complex of β-cyclodextrin （β-CD） and oleic acid was prepared as a kind of lubricant additive. The effects of testing load, friction time and additive content on tribological performance were investigated using four ball testing methods, and the lubrication mechanism of the complex was analyzed. The results showed that the friction coefficient of lubricant of complex continuously reduced with the increasing of time under the load of 196 N, 294 N and 392 N. The anti-wear property of complex was better than that of β-CD and oleic acid for different additive content. When the content was 0.9%, lubricant of complex had the best friction-reducing ability. The host β-CD molecules of complex were decomposed and guest oleic acid molecules were released during friction process. The carboxylic acid soap film formed by oleic acid played a major role in lubrication, and the alcohol chemisorption film and carbon deposition film formed by the fragments of β-CD played auxiliary and promoting role. They formed a composite lubricating film, which had better tribological performance under certain conditions.

关 键 词：有机高分子材料 Β-环糊精 油酸 包合物 摩擦学性能 

分 类 号：TH117[机械工程—机械设计及理论]