Tribological and oxidation properties study of a kind of sulfonate-modified nano Na sub(2)CO sub(3) and K sub(2)CO sub(3)

The tribological properties of a middle base value metal alkali sulfonate-modified nano Na sub(2)CO sub(3) and K sub(2)CO sub(3) as lubricating oil additives were introduced in this paper, and its collaboration with the ashless antioxidant properties were evaluation by using PDSC. The results show that the product possesses good tribological properties, thermal stability, and a good synergistic antioxidation effect with ashless antioxidant, it mainly to increase oxidation free energy of base oil.