Preparation of triazine derivatives and evaluation of their tribological properties as lubricant additives in poly-alpha olefin

The tribological properties of two as-synthesized triazine derivatives were evaluated with a four-ball machine. Results show that the triazine derivatives show good antiwear and extreme pressure properties. Besides, the difference in the tribological properties of the triazine derivatives is closely related to the difference in their molecular structure. Namely, a synergistic tribological effect of the N-containing heterocyclic species and borate ester group in as-synthesized lubricant additive improves the antiwear performance of base stock. Moreover, a protective film containing B2O3, Fe2B, ammonium salt and so on is formed on worn surfaces to improve antiwear ability and load-carrying capacity of the lubricants.

► Two kinds of triazine derivatives as lubricant additives were synthesized.
► Triazine derivative containing borate ester can greatly improve the antiwear ability.
► The synergistic effect of heterocyclic group and borate ester reduces the abrasion.