二羟基脂肪酸的极压抗磨性能研究  

Investigation of the Extreme Pressure and Antiwear Properties of Dihydroxy Fatty Acids

作　　者：张信刚[1] 王大璞[1] 杨生荣[2] 

机构地区：[1]上海交通大学化学化工学院 [2]中国科学院兰州化学物理研究所固体润滑开放实验室

出　　处：《摩擦学学报》1998年第2期175-178,共4页Tribology

基　　金：中国科学院兰州化学物理研究所固体润滑开放实验室资助项目

摘　　要：在ＳＲＶ摩擦磨损试验机上分别对顺式和反式二羟基脂肪酸的极压和抗磨性能进行了研究．研究表明：其极压性较差，但具有一定的抗磨作用；反式二羟基脂肪酸的抗磨效果明显优于顺式二羟基脂肪酸．利用表面反射红外光谱分析磨痕表面发现，顺式二羟基极易吸附于摩擦表面而导致定向烃链缩短，抗磨效果较反式二羟基脂肪酸差．由此提出了顺式与反式二羟基脂肪酸不同的吸附抗磨模型．The extreme pressure and antiwear(EP AW) properties of cis and trans dihydroxy fatty acids were studied by Optimol SRV tester. Results show that hydroxy fatty acids had poor EP property, but possessed some AW ability. In addition, the AW funciton of transdihydroxy fatty acid was obviously better than that of cis dihydroxy fatty acid. The surface of the wear scar was analyzed by Fourier Transform Infrared Reflection Absorption Spectroscopy (FT IR RAS). It was found that cis dihydroxy group could easily adsorb on the rubbing surface. This led to shortening the linear alkyl chain which could adsorb on the surface. On the basis of the experimental results, the different adsorption antiwear models for cis and trans dihydroxy fatty acids were proposed. The models could well explain the experimental results and help in developing novel hydroxy fatty acid based AW additives.

关 键 词：二羟基脂肪酸 极压抗磨性能 摩擦聚合物膜 

分 类 号：O625.54[理学—有机化学] TH117.1[理学—化学]