▎ 摘　　要

NOVELTY - Preparing PTC graphene-based conductive ink comprises providing a dispersion of graphene oxide in acetone, adding heteropolyacid to the acetone dispersion, stirring and mixing, and collecting the first precipitate by centrifugation and drying, resuspending the first precipitate in acetone and titanium acetylacetonate, further stirring and mixing, collecting the second precipitate by centrifugation and drying, placing the second precipitate in a hydrogen environment for reduction to prepare titanium quantum dot-doped graphene, and resuspending ethanol to prepare a titanium quantum dot-doped graphene dispersion to prepare titanium quantum dot-doped graphene-carbon black slurry by taking 50-250 pts. wt. first dispersant and stirring, slowly adding titanium quantum dot-doped graphene dispersion and first dispersant and conductive carbon black to obtain titanium quantum dot-doped graphene-carbon black paste. USE - The method is useful for preparing PTC graphene-based conductive ink. ADVANTAGE - The method: realizes the glass transition of the polylactic acid-polyethylene glycol block copolymer in a suitable temperature range, and improves the overall anti-peeling effect of the ink. DETAILED DESCRIPTION - Preparing PTC graphene-based conductive ink comprises providing a dispersion of graphene oxide in acetone, adding heteropolyacid to the acetone dispersion, stirring and mixing, and collecting the first precipitate by centrifugation and drying, resuspending the first precipitate in acetone and titanium acetylacetonate, further stirring and mixing, collecting the second precipitate by centrifugation and drying, placing the second precipitate in a hydrogen environment for reduction to prepare titanium quantum dot-doped graphene, and resuspending ethanol to prepare a titanium quantum dot-doped graphene dispersion to prepare titanium quantum dot-doped graphene-carbon black slurry by taking 50-250 pts. wt. first dispersant and stirring, slowly adding 15-40 pts. wt. titanium quantum dot-doped graphene dispersion and 5-25 pts. wt. first dispersant and conductive carbon black to obtain titanium quantum dot-doped graphene-carbon black paste, preparing PTC mixture by adding 1-8 pts. wt. powdered methoxy polyethylene glycol acrylate and 15-35 pts. wt. powdered polylactic acid-polyethylene glycol block copolymer, mixing powdered polylactic acid-polyethylene glycol block copolymer and powdered methoxy polyethylene glycol acrylate uniformly and then melt blending and granulating, grinding into a micron-sized particulate modified PTC mixture, adding the particulate modified PTC mixture to 50-250 pts. wt. second dispersant and stir to prepare a PTC mixture, preparing a titanium quantum dot doped graphene-based mixture by slowly adding the PTC mixture and 500-2500 pts. wt. the third dispersant to the stirring titanium quantum dot-doped graphene-carbon black slurry, after the addition is complete, transfer the mixture to the reactor at 55-65 degrees C in the process, after reacting for 1-4 hours, naturally cooling, and stirring is continued during the reaction, preparing PTC graphene-based conductive ink by while stirring the titanium quantum dot-doped graphene-based mixed liquid, adding 0.5-2.5 pts. wt. structure stabilizer, 0.5-2.5 pts. wt. polyacrylonitrile-maleic anhydride copolymer and 2-8 pts. wt. leveling agent to the titanium quantum dot doped graphene-based mixed solution, and stirring at 500-5000 rpm for 0.5-6 hours, obtaining PTC graphene-based conductive ink, where the heteropoly acid includes phosphomolybdic acid, silimolybdic acid, phosphotungstic acid and silicotungstic acid. An INDEPENDENT CLAIM is also included for PTC graphene-based conductive ink, is prepared by the method.