▎ 摘　　要

NOVELTY - A graphene heat dissipation lamp comprises graphene composite thermally conducting plastic radiator and LED light source board mounted on the graphene composite thermally conducting plastic radiator. The graphene composite thermally conducting plastic radiator is prepared by adding 1-10 pts. wt. dispersant, 1-10 pts. wt. graphene and 1-30 pts. wt. spherical alumina powder to 1-100 pts. wt. water, dispersing at 100-1000 rpm for 10-60 minutes to obtain pre-dispersed liquid, spray-drying the pre-dispersed liquid to form graphene-coated alumina spherical thermally conductive filler, adding 1-70 pts. wt. graphene-coated alumina spherical thermally conductive filler to 1-100 pts. wt. thermoplastic, extruding at decomposition temperature of the thermoplastic to obtain graphene longitudinal thermally conductive pellets, performing two-layer co-extrusion of graphene transverse thermally conductive pellets and graphene longitudinal thermally conductive pellets in mass ratio of 1-1:1-9. USE - Graphene heat dissipation lamp for studying. ADVANTAGE - The graphene heat dissipation lamp is lightweight and has excellent heat dissipation performance compared with existing lamps. DETAILED DESCRIPTION - A graphene heat dissipation lamp comprises graphene composite thermally conducting plastic radiator and LED light source board mounted on the graphene composite thermally conducting plastic radiator. The graphene composite thermally conducting plastic radiator is prepared by mixing 1-70 pts. wt. graphene, 1-70 pts. wt. graphite nanosheets, and 1-10 pts. wt. fiber filler for 10-60 minutes, adding 1-100 pts. wt. thermoplastic component, performing screw extrusion to obtain graphene transverse thermally conductive pellets at decomposition temperature of the thermoplastic, adding 1-10 pts. wt. dispersant, 1-10 pts. wt. graphene and 1-30 pts. wt. spherical alumina powder to 1-100 pts. wt. water, dispersing at 100-1000 rpm for 10-60 minutes to obtain pre-dispersed liquid, spray-drying the pre-dispersed liquid to form graphene-coated alumina spherical thermally conductive filler, adding 1-70 pts. wt. graphene-coated alumina spherical thermally conductive filler to 1-100 pts. wt. thermoplastic, extruding at decomposition temperature of the thermoplastic to obtain graphene longitudinal thermally conductive pellets, performing two-layer co-extrusion of graphene transverse thermally conductive pellets and graphene longitudinal thermally conductive pellets in mass ratio of 1-1:1-9 to form graphene composite thermally conducting plastic radiator comprising outer thermal conductive layer with lateral thermal conductivity and inner thermal conductive layer with longitudinal thermal conductivity.