▎ 摘　　要

NOVELTY - Preparing fluorinated graphene high thermal conductivity insulating composite film comprises e.g. mixing ethanol and oleic acid, adding slowly aqueous calcium chloride solution, aqueous sodium hydroxide solution and aqueous sodium phosphate monobasic dihydrate solution, finally transferring the above mixed solution into a reaction kettle, and reacting to obtain initial product to obtain hydroxyapatite nanowires (HAPNWs), washing, first dispersing in N-methyl-2-pyrrolidone solvent, adding graphene fluoride powder into N-methylpyrrolidone to obtain mixed solution, adding the aqueous HAPNWs dispersion into the mixed solution and ultrasonically dispersing uniformly, removing the solvent, and drying to obtain HAPNWs/GFS film, and (vi) transferring the above HAPNWs/GFS films into EP base solution, firstly immersing under vacuum condition, then carrying out atmospheric pressure gradient heating in a vacuum drying oven, and curing. USE - The insulating composite film is useful in improving thermal stability of insulating medium; in enhancing and suppressing electrical stability induced by surface flashover/deterioration of insulators; and in improving electrical properties of insulating medium composite (all claimed). ADVANTAGE - The fluorinated graphene high heat-conducting insulating composite film: can greatly improve the heat stress dissipation capability of insulating medium, and enhance the insulating edge flashover/deterioration inhibiting effect. DETAILED DESCRIPTION - Preparing fluorinated graphene high thermal conductivity insulating composite film comprises (i) mixing ethanol and oleic acid according to the molar ratio (5-8):1 so that ethanol and oleic acid are fully hydrolyzed to obtain mixed system, adding slowly aqueous calcium chloride solution into mixed system, adding aqueous sodium hydroxide solution and aqueous sodium phosphate monobasic dihydrate solution, finally transferring the above mixed solution into a reaction kettle, and reacting at 160-200℃ for 22-24 hours to obtain initial product as hydroxyapatite nanowires (HAPNWs), where the volume ratio between mixed system, aqueous calcium chloride solution, aqueous sodium hydroxide solution and aqueous sodium phosphate monobasic dihydrate solution are 1-5:1-5:1-5:0.5-1.5, (ii) washing the primary product obtained in (i) and then vacuum drying to obtain HAPNWs, (iii) first dispersing fluorinated graphite in N-methyl-2-pyrrolidone solvent at a molar concentration of 0.3-0.6 mol/l, then placing the above mixture in an ultrasonic bath for 20-30 hours, and finally centrifuging for 5-15 minutes, (iv) taking the supernatant after centrifugation of (iii) and filtering it through a nylon filter membrane, and then vacuum drying the collected GFS powder for later use, (v) adding graphene fluoride (GFS) powder into N-methylpyrrolidone to obtain mixed solution, adding the aqueous HAPNWs dispersion into the mixed solution and ultrasonically dispersing uniformly, removing the solvent, and drying to obtain HAPNWs/GFS film, where the GFS content in HAPNWs/GFS film is 20-80 wt.%, and (vi) transferring the above HAPNWs/GFS films into EP base solution, firstly immersing under vacuum condition, then carrying out atmospheric pressure gradient heating in a vacuum drying oven, and curing to obtain corresponding HAPNWs/GFS/EP composite films. An INDEPENDENT CLAIM is included for HAPNWs/GFS/EP high thermal conductivity insulating composite film prepared by above method.