Synergism and Antagonism of Anti-Wear Additives as a Method of Confirming the Mechanism of Their Action

摘要

-The effect of 2,2,6,6-tetramethylpiperidine (TMP), 2,6-di-tert-butyl-4-methylphenol (DTBMP), para-cumylphenol (PCP), 2,2,6,6-tetramethylpiperidine-1-oxyl (TMPO), and dicumyl peroxide (DCP) on the anti-wear properties of dodecanethiol (DdSH), didodecyl disulfide (Dd(2)S(2)), and dibutyl disulfide (Bu2S2) in a solution of purified Vaseline oil (PVO) has been investigated. The anti-wear properties of 23 two-component compositions of additives from 28 possible combinations were studied. A rule was proposed: synergy is when the effectiveness of a mixture of additives is greater than the average result of the sum of anti-wear efficiencies of each component separately, and antagonism is when the effectiveness of a mixture of additives is less than the average result of the sum of anti-wear efficiencies of each component separately. The practical significance of the proposed method for studying two-component additives is that it can be used to confirm or refute the mechanism of action of additives.