Abstract:

Surface modification has a great influence on the preparation and performance of nano silica lubrication grease. This study examined nano silica lubrication grease made with four nano silica, with and without surface modification by KH570, 1-octanol, hexamethyldisilizane. Results show that nano silica lubrication grease with surface modification can overcome the shortage of excessive age-hardening, poor water resistance, poor mechanical stability, each modifier has a suitable modification condition, the nano silica lubrication grease modified with KH570 shows the best performance.

Key words: nano silica, surface modification, lubricationg grease, orthogonal experiment