▎ 摘　　要

NOVELTY - Preparation of photocurable polyethylene terephthalate/graphene thermally conductive film involves preparing graphene heat-dissipating slurry by mixing 6-12 pts. wt. graphene and 12-24 pts. wt. solvent under ultrasonic vibrations for 40-60 minutes, and shearing to obtain composite slurry material; adding 50-70 pts. wt. urea-formaldehyde resin to 12-30 pts. wt. composite slurry material, mixing, adding 5-8 pts. wt. curing agent and 3-6 pts. wt. carbon nanotubes, and stirring under 1000-1200 revolutions/minute (rpm) for 2-4 hours to obtain initial product of graphene heat-dissipating slurry; adding 2-5 pts. wt. thermally conductive metal powder, 12-16 pts. wt. antifoaming agent and 1-5 pts. wt. antioxidant, mixing, adding 50-70 pts. wt. organic monomer and 1-5 pts. wt. crosslinking agent, stirring under 1200-1500 rpm for 2-3 hours; subjecting 30 mu m thick polyethylene terephthalate to corona treatment; adding photocuring agent to first obtained product, and mixing uniformly. USE - Method for preparing photocurable polyethylene terephthalate/graphene thermally conductive film (claimed). ADVANTAGE - The product has excellent heat conducting coefficient, three-dimensional network-shaped structure and thermal diffusion coefficient. DETAILED DESCRIPTION - Preparation of photocurable polyethylene terephthalate/graphene thermally conductive film comprises preparing graphene heat-dissipating slurry by mixing 6-12 pts. wt. graphene and 12-24 pts. wt. solvent under ultrasonic vibrations for 40-60 minutes, and shearing to obtain composite slurry material; adding 50-70 pts. wt. urea-formaldehyde resin to 12-30 pts. wt. composite slurry material, mixing, adding 5-8 pts. wt. curing agent and 3-6 pts. wt. carbon nanotubes, and stirring under 1000-1200 revolutions/minute (rpm) for 2-4 hours to obtain initial product of graphene heat-dissipating slurry; adding 2-5 pts. wt. thermally conductive metal powder, 12-16 pts. wt. antifoaming agent and 1-5 pts. wt. antioxidant, mixing, adding 50-70 pts. wt. organic monomer and 1-5 pts. wt. crosslinking agent, stirring under 1200-1500 rpm for 2-3 hours; subjecting 30 mu m thick polyethylene terephthalate to corona treatment; adding photocuring agent to first obtained product, mixing uniformly, applying mixed slurry to corona-treated polyethylene terephthalate film by bench coater; and placing in UV light or laser beam atmosphere at wavelength of 365-405 nm for 1-2 minutes, drying, curing at 25 degrees C 1.0-2.0 hours, shrinking, deforming, slowly raising temperature to 100-200 degrees C for 1.0-3.0 hours, and trimming.