▎ 摘　　要

NOVELTY - A graphene magnetic ring powder coating comprises 30-40 pts. wt. tris(hydroxyphenyl)methane type epoxy resin, 20-30 pts. wt. novolak epoxy resin, 1-10 pts. wt. graphene, 3-6 pts. wt. composite curing agent, 1-2 pts. wt. glass fiber, 1-2 pts. wt. composite coupling agent, 0.3-4 pts. wt. pigments and fillers, 1-2 pts. wt. titanium dioxide, 1-10 pts. wt barium sulfate. USE - As graphene magnetic ring powder coating. ADVANTAGE - The graphene magnetic ring coating has excellent high temperature resistance and pressure resistance, and reduced loss rate of magnetic induction. The coating has large volume resistivity and dielectric strength (breakdown strength) and excellent lifting performance. The coating reduces or avoids the influence of the coating on the magnetic induction of the magnetic ring. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the graphene magnetic ring powder coating comprising (S1) weighing each component and adding to a mixing tank in turn, first stirring and mixing at low speed of 200-300 rpm for 5 minutes, and then stirring and mixing at a high speed of 1000-1200 rpm for 6 minutes to obtain a premix, (S2) adding the premix material to an extruder for melting and extruding to obtain a semifinished product, where the extruding is carried out at different zones, and (S3) adding the extruded semifinished product to a grinder for grinding and grading, and controlling the particle size distribution of the finished product to meet D50 of 38-42 μm to obtain the target product.