▎ 摘　　要

NOVELTY - Preparing bending-resistant composite radiating film comprises e.g. taking graphite oxide aqueous solution, firstly adding radiating filler, stirring uniformly, then adding emulsifier, stirring until the emulsifier is completely dissolved to obtain the first mixed solution, the radiating filler comprises natural graphite, artificial graphite, middle phase carbon, middle phase asphalt, middle phase carbon micro-sphere, single-wall carbon nano-tube, multi-wall carbon nano-tube, carbon fiber, graphene, active carbon, carbon black, silicon carbide, diamond powder, silver-palladium alloy, platinum, nickel, gold, aluminum, copper, silver, aluminum nitride, boron nitride, alumina, magnesium oxide, silicon dioxide, beryllium oxide, taking high-molecular elastomer, dissolving in the solvent to obtain the elastic body dissolving liquid, and adding the elastic body dissolving liquid. USE - The method is useful for preparing bending-resistant composite radiating film. ADVANTAGE - The method: prepares bending-resistant composite radiating film, which can maintain the thermal conductivity of more than 1100 W/mK, the physical density of more than 2 g/cm3, and the conductivity of more than 8000 S/cm after being bent 250,000 times back and forth at 150 degrees . DETAILED DESCRIPTION - Preparing bending-resistant composite radiating film comprises (i) taking graphite oxide aqueous solution, firstly adding radiating filler, stirring uniformly, then adding emulsifier, stirring until the emulsifier is completely dissolved to obtain the first mixed solution, the radiating filler comprises natural graphite, artificial graphite, middle phase carbon, middle phase asphalt, middle phase carbon micro-sphere, single-wall carbon nano-tube, multi-wall carbon nano-tube, carbon fiber, graphene, active carbon, carbon black, silicon carbide, diamond powder, silver-palladium alloy, platinum, nickel, gold, aluminum, copper, silver, aluminum nitride, boron nitride; alumina, magnesium oxide, silicon dioxide, beryllium oxide; (ii) taking high-molecular elastomer, dissolving in the solvent to obtain the elastic body dissolving liquid, then adding the elastic body dissolving liquid into the first mixed liquid obtained in the step (i), stirring for 1-24 hours at 2-45 degrees C to obtain the second mixed liquid; (iii) coating the second mixed liquid pressure obtained in the step (ii) into film, drying, obtaining dry radiating film; (iv) obtaining the drying radiating film in the inert gas atmosphere at 100-800 degrees C for 1-4 hours, then rolling to dry radiating film thickness of 70 to90 % to obtain the primary rolling radiating film; (v) reducing the primary rolling radiating film obtained in the step (iv) at 800-2000 degrees C for 1-24 hours, obtaining the reducing radiating film; (vi) rolling the reducing radiating film obtained in the step (v) to 20-50% of the thickness of the drying radiating film, then calcining for 1-2 hours at 2000-3000 degrees C. An INDEPENDENT CLAIM is also included for radiating film, is obtained by the preparation method of the bending-resistant composite radiating film.