▎ 摘　　要

NOVELTY - A magnetic roller surface coating composition comprises 30-40 pts. wt. terminal methacrylate hyperbranched polythiourethane, 2-4 pts. wt. allyl phenoxyacetate, 3-6 pts. wt. N- (4-cyano-3-trifluoromethylphenyl) methacrylamide, 1-2 pts. wt. 2,4, 6-trivinyl boroxine, 5-8 pts. wt. terminal vinyl fluorosilicone oil, 5-10 pts. wt. graphene coated nano aluminum powder, 2-4 pts. wt. coupling agent, 0.5-0.8 pts. wt. defoaming agent, 0.3-0.5 pts. wt. flatting agent, 1-2 pts. wt. photoinitiator, 15-20 pts. wt. filler and 20-30 pts. wt. solvent USE - Surface coating composition is used for magnetic roller of the magnetic separator. ADVANTAGE - The surface coating composition having improved adhesion, aging resistance and wear resistance, provides good protection to the magnetic roller of magnetic separator. The surface coated magnetic roller, has improved shelf life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the surface coating composition, which involves uniformly mixing the raw materials, followed by grinding them, until the fineness is 5-25µm, aging for 1-2 days, sampling and inspecting, then packaging after analysis.