vegetable sulfur
1.When adding sulfurized fatty acid esters having various active sulfur contents to biodegradable base fluids,its effect on the anti-wear property of the base fluids were varied: for instance,the anti-wear performance of sunflower oil and vegetable oil improved with the increase of active sulfur content,and reverse results were observed for trimethylolpropane ester and mineral oil HVI 150SN.
