为提高纳米硼酸锌在润滑油中的抗摩擦磨损性能和成膜性能,以油酸(OA)为表面修饰剂对硼酸锌进行修饰。利用SEM、TEM、FT-IR等方法对其进行表征,并采用四球摩擦磨损试验机考察了油酸对硼酸锌摩擦磨损性能的影响。结果表明,油酸修饰后提高了硼酸锌在润滑油中的分散性,在四球磨损试验后,载荷为392 N、硼酸锌最佳添加量为0.25%时,润滑油平均摩擦系数降低了43.4%,磨斑直径下降了15.4%;同时用SEM对摩擦表面的形貌进行了测试。油酸修饰后的硼酸锌使润滑油平均摩擦系数降低了60%,磨斑直径下降了21.5%。油酸修饰后的硼酸锌具有优异的减摩抗磨性能。

To improve the antifriction,wear-resistance and film forming properties of nano-zinc oxide in lubricating oil,oleic acid is used as a surface modifier to modify zinc borate.The modified samples are characterized by means of SEM,TEM,FT-IR,etc.The effect of oleic acid on the antifriction and wear-resistance properties of zinc borate is investigated by using a four-ball friction and wear testing machine.It is found that the dispersion of zinc borate in lubricating oil is improved due to the modification by oleic acid.After the four-ball wear test,the average friction coefficient of lubricating oil drops by 43.4% and the wear spot diameter is reduced by 15.4% when the load is 392 N and the optimum addition amount of zinc borate is 0.25%.Meanwhile,the morphology of the friction surface is measured by means of SEM.Experiments results show that the addition of oleic acid modified zinc borate reduces the average friction coefficient and wear spot diameter of lubricating oil by 60% and 21.5%,respectively.Oleic acid modified zinc borate has good antifriction and antiwear properties.

张美楠(1994-),女,硕士研究生,研究方向为润滑材料及其耐磨性能,598757780@qq.com。