▎ 摘　　要

NOVELTY - Light-weight heat-dissipating coating comprises fillers and resin systems. The filler comprises high thermal conductivity graphite fiber and graphene. The high thermal conductivity graphite fiber has a fiber length of 100 nm-50 mu m, a fiber diameter of 1 nm-10 mu m, and an added amount of 1-40 wt.% total mass of the coating. The number of graphene layers is 1-5, and is added in the form of graphene slurry. The content of graphene in the graphene slurry is 1-10 wt.%, and the amount of graphene added is 0.1-5 wt.% of the total mass of the coating. The resin system includes epoxy resin, polyurethane, acrylic, siloxane, alkyd, amino, polyester, silicone and fluorocarbon. The amount of resin system added is 5-85 wt.% of the total mass of the coating. The thermal conductivity of the lightweight heat-dissipating paint is greater than 50W/(m.k). USE - The heat-dissipating coating is useful to electronic products e.g. mobile phones, tablet computers, laptop computers and other electronic products. ADVANTAGE - The coating: has high thermal conductivity, high emissivity and low density; and is easy to construct and economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing light-weight heat-dissipating coating, comprising (i) placing the required high thermal conductivity graphite fiber in an oven at 110 plus minus 5 degrees C, drying for 2-12 hours, cooling naturally, bagging the high thermal conductivity graphite fiber, sealing separately, and marking; and (ii) taking the resin system and the dispersant according to the total mass of the coating 5-85 wt.% and 0.2-2 wt.% respectively, adding into the bucket, adding the solvent and stirring at low speed for 5-45 minutes to obtain high-conductivity graphite fiber and graphene, stirring at high speed for 15-60 minutes, dispersing evenly, grinding for 0.5-4 hours until the fineness of the coating reaches below 60 mu m, passing the viscosity test, filtering, discharging and packaging.