Abstract
In this paper, tetradecyl methacrylate-maleic anhydride-1-hexadecene (C14MC-MA-HE) terpolymers in various molar ratios was prepared and used as pour point depressants (PPDs) in 0# diesel fuel. Results showed that C14MC-MA-HE terpolymers exerted distinct depression effects on solid point (SP) and cold filter plugging point (CFPP) at 0.15 wt.%, especially in 4:1:1 and 4:4:1 ratio. To obtain better PPDs, the terpolymers were mixed with ethylene-vinyl acetate copolymer (EVA) at 1:1 mass ratio, and have proved to present better synergistic effects. PPDC-2 exhibited the best depression in both CFPP and SP by 20 °C at 0.15 wt.%. Additionally, the performance mechanism was explored.
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