Abstract
Organic molybdenum friction modifier is an indispensable lubricating material owing to its remarkable tribological behavior, which has been widely used in various fields. Here, a feasible method is provided for the synthesis of thiadiazole organic molybdenum as a multifunctional lubricant additive in the trimethylolpropane trioleate biodegradable base oil. Results show that the coefficient of friction and the wear scar diameter are significantly decreased by ~39% and ~42%, respectively. Moreover, its extreme pressure performance is also improved by more than 50%. The XANES results show that the functional group of the thiadiazole and molybdate in the additive molecule will form a tribofilm rich in sulfate and molybdate to enhance the properties of friction-reducing, anti-wear and load-bearing capacity of the based oil.
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