Cottonseed oil biodiesel antiwear agent and preparation method thereof

The invention relates to the technical field of diesel oil antiwear agents, in particular to a cottonseed oil biodiesel antiwear agent and a preparation method thereof. A modified cottonseed oil biodiesel anti-wear agent is added into diesel oil, the mixing amount of the cottonseed oil biodiesel anti-wear agent is 0.5-0.8 g/kg, the cottonseed oil biodiesel anti-wear agent comprises basic biosynthetic oil and an improved anti-wear agent, and the molar ratio of the basic biosynthetic oil to the improved anti-wear agent is (6-8): (0.1-0.5). According to the cottonseed oil biodiesel anti-wear agent and the preparation method thereof, the basic biosynthetic oil and the improved anti-wear agent are used as anti-wear agents, or a fatty acid ester type anti-wear agent is replaced or partially replaced, so that the problems of oil product emulsification, filter blockage and the like which are easily caused when the fatty acid ester type anti-wear agent is used for blending diesel oil are avoided; or the fatty acid typ