Effect of PPDC-FAPE 7 on the Fuel Properties of Biodiesel Blends
In summary, 2000 ppm PPDC-FAPE 7 (4:1) presents the best depressive effect on B20. Table 4 shows the fuel properties of B20 with 2000 ppm PPDC-FAPE 7 (4:1). In the presence of 2000 ppm PPDC-FAPE 7 (4:1), the CP, CFPP, and PP of B20 are reduced from -2, -4, and -14 °C to -6, -14, and -33 °C, respectively.
PPDCs imparts excellent cold flow properties to the biodiesel blends and has a slightly affect other properties. The flash point is the lowest temperature at which fuel vapor flashes and burns immediately when it encounters the flame in the air. Fuels with high flash points are less susceptible to fire and are easier to transport. B20 with and without PPDCs has flash points much higher than ASTM D7467, greatly improving transportation safety. In addition, the acid value remained unchanged, whereas the kinematic viscosity and density increased slightly. The experimental data satisfied the standard of biodiesel blends (ASTM D7467).