Using the jatropha biodiesel as raw material, the single and combined effects of oxidation degree and temperature on the kinematic viscosity of biodiesel were studied, and the fitting coefficient constant regression method was used to construct mathematical model. The results showed that the kinematic viscosity of biodiesel decreased with temperature increasing, and the mathematical model affected by single temperature factor was η=eA+Bt+Ct2. The kinematic viscosity of biodiesel increased with oxidation time prolonging, and the relationship between kinematic viscosity and electrical conductivity was η=A+Bμ; the relationship between kinematic viscosity and temperature and oxidation degree was η=0.194+0007μ+e2.609-0.035t+0.000 1t2. |