| With epoxy fatty acid methyl ester as raw material, under the action of phosphoric acid catalyst, epoxy fatty acid methyl ester reacted with short chain fatty alcohol to produce a series of diester derivatives, which could be used as substitutes for traditional mineral oil-based base oils.The effects of alcohol carbon chain length on the viscosity, acid value, low temperature fluidity, thermal oxidation stability, extreme pressure proptrty, anti-friction and anti-wear properties of the diester derivatives were investigated. The susceptibility of the diester derivatives to traditional additive zinc dialkyl dithiophosphates (ZDDP) was further investigated.The results showed that when the epoxy fatty acid methyl ester was modified by short chain fatty alcohol, the low temperature fluidity, extreme pressure property, anti-friction property and anti-wear property of the diester derivatives could be improved, but the oxidation stability of the diester derivatives could not be improved.The diester derivatives had good susceptibility to ZDDP. |
