EFFECT OF 2-ETHYLHEXANOL ON PROPERTIES OF ZINC DIALKYLDITHIOPHOSPHATE

This paper deals with the influences of 2-ethylhexanol (residual alcoh ol in zinc dialkyldithiophosphate) on the antioxidation, anti-friction and anti-wear of zinc dialkyldithiophosphate that is one of the addit ives widely used in engine lubricating oil. The results show that the 2-ethyihexanol results in the thermal degradation of zinc dialkyldithi ophosphate earlier and decrements of the anti-oxidation and antifricti on capacites of zinc dialkyldithiophosphate. The 2-ethylhexanol increa ses greatly the anti-wear property of zinc dialkyldithiophosphate.