▎ 摘　　要

NOVELTY - Preparing PTC graphene-based conductive ink involves providing graphene oxide acetone dispersion, adding heteropolyacid to the graphene oxide acetone dispersion, stirring and mixing, centrifuging to collect the first precipitate and drying. The first precipitate is resuspended in acetone and added platinum acetylacetonate, stirred again and mixed second precipitate is collected by centrifugation and dried, the second precipitate is placed in a hydrogen environment for reduction to prepare platinum quantum dot-doped graphene, and ethanol is resuspended to prepare a platinum quantum dot-doped graphene dispersion. USE - Method for preparing PTC graphene-based conductive ink. ADVANTAGE - The method enables to prepare PTC graphene-based conductive ink is good for improving the anti-stripping effect of the whole printing ink and realizes the glass transition of PTC graphene-based conductive ink at proper temperature range to realize PTC protection. DETAILED DESCRIPTION - Preparing PTC graphene-based conductive ink involves providing graphene oxide acetone dispersion, adding heteropolyacid to the graphene oxide acetone dispersion, stirring and mixing, centrifuging to collect the first precipitate and drying. The first precipitate is resuspended in acetone and added platinum acetylacetonate, stirred again and mixed second precipitate is collected by centrifugation and dried, the second precipitate is placed in a hydrogen environment for reduction to prepare platinum quantum dot-doped graphene, and ethanol is resuspended to prepare a platinum quantum dot-doped graphene dispersion, taken 50-250 pts. wt. first dispersant and stirred, slowly added 15-25 pts. wt. platinum quantum dot-doped graphene dispersion and 5-25 pts. wt. first dispersant to the first dispersant conductive carbon black to obtain platinum quantum dot doped graphene-carbon black paste, prepared PTC mixture, provided 1-5 pts. wt. powdered styrene-acrylonitrile-maleic anhydride copolymer and 15-35 pts. wt. powdered PA10T, after mixed the powdered PA10T and powdered styrene-acrylonitrile-maleic anhydride copolymer uniformly, melt blended, granulated, grounded into a micron-sized particulate modified PTC mixture, added the particulate modified PTC mixture to 50-250 pts. wt. second dispersant and stirring to prepare a PTC mixture, slowly added the PTC mixture and 500-2500 pts. wt. third dispersant to the stirred platinum quantum dot-doped graphene-carbon black slurry, transferred the mixture to the reactor at 90-95 degrees C in the process, reacted for 1-4 hours, cooled naturally, and continue to stirred during the reaction to prepare a platinum quantum dot-doped graphene-based mixed solution, added 0.5-2.5 pats. wt. structure stabilizer and 1-4 pts. wt. leveling agent to the platinum quantum dot doped graphene-based mixture, and stirred at 500-5000 rpm for 2-6 hours to obtain product, where the heteropoly acid includes one or a combination of phosphomolybdic acid, silicomolybdic acid, phosphotungstic acid and silicotungstic acid, and the PA10T is a glass fiber modified PA10T.