几种羟基脂肪酸在菜籽油中的润滑行为研究

利用四球摩擦磨损试验机，考察了实验室合成的几种羟基脂肪酸在菜籽油中的减摩抗磨和极压性能。试验结果表明：这些含氧添加剂具有一定的减摩抗磨能力，但对菜籽油的极压性能的没有影响。双羟基脂肪酸比单羟基脂肪酸的减摩抗磨效果更为明显；烷基链较长的羟基甘二酸比羟基十八酸的减摩抗磨性能略好。

Investigation of the Lubricating Performance of Several Hydroxy Fatty Acids as Additives in Rapeseed Oil

The friction-reduction, antiwear and extreme pressure properties of several hydroxy fatty acids as additives in rapeseed oil were investigated with four-ball friction and wear tester It has been found that these oxygen-containing additives possess certain friction-reduction and antiwear capacities but have no effect on the extreme pressure properties of the rapeseed oil Dihydroxy fatty acids as additives in rapeseed oil show better friction-reduction and antiwear properties than monohydroxy fatty acids in the same base stock At the same time, hydroxy fatty acids with longer molecular chain length are superior to those with shorter molecular chain length in terms of friction-reduction and antiwear behaviors