Effect of an amine phosphate addition on the foaming characteristics in turbine base oil

摘要

Foaming tendency of turbine oil is diverse due to the variance in turbine oil components, including the type and content of additives and base oils. A common amine phosphate (AP) was investigated as an anti-wear additive in turbine oil. According to ASTM D892, the AP exhibited severe foam accumulation when blended with five kinds of polyol esters, respectively. There is a positive correlation between foam accumulation volume and elasticity modulus. Moreover, adding 0.02wt% defoamer (T921) could reduce foam accumulation volume and elasticity modulus effectively.