▎ 摘　　要

NOVELTY - Preparing phenylthiocarbamide graphene-based conductive ink involves providing graphene oxide acetone dispersion, adding heteropoly acid to graphene oxide acetone dispersion, stirring and mixing well, collecting the first precipitate by centrifugation and drying, and using the first precipitate resuspend in acetone and adding palladium acetylacetonate, stirring and mixing, collecting the second precipitate by centrifugation and drying it, placing the second precipitate in a hydrogen environment for reduction to prepare palladium quantum dot-doped graphene, and resuspending in ethanol to prepare a palladium quantum dot-doped graphene dispersion, taking 50-250 pts. wt. first dispersant and stirring, and slowly adding 15-25 pts. wt. palladium quantum dot-doped graphene dispersion and 5-25 pts. wt. first dispersant conductive carbon black into obtain palladium quantum dot doped graphene-carbon black paste. USE - Method for preparing phenylthiocarbamide graphene-based conductive ink. ADVANTAGE - The method uses PA10T having a suitable glass transition temperature range and adhesion ability, thus ensures the glass transition of PTC graphene-based conductive ink in a suitable temperature range to achieve PTC protection, and also helps to improve the overall anti-peeling effect of ink. DETAILED DESCRIPTION - Preparing phenylthiocarbamide graphene-based conductive ink involves providing graphene oxide acetone dispersion, adding heteropoly acid to graphene oxide acetone dispersion, stirring and mixing well, collecting the first precipitate by centrifugation and drying, and using the first precipitate resuspend in acetone and adding palladium acetylacetonate, stirring and mixing, collecting the second precipitate by centrifugation and drying it, placing the second precipitate in a hydrogen environment for reduction to prepare palladium quantum dot-doped graphene, and resuspending in ethanol to prepare a palladium quantum dot-doped graphene dispersion, taking 50-250 pts. wt. first dispersant and stirring, slowly adding 15-25 pts. wt. palladium quantum dot-doped graphene dispersion and 5-25 pts. wt. first dispersant conductive carbon black into obtain palladium quantum dot doped graphene-carbon black paste, providing 1-5 pts. wt. powdered styrene-acrylonitrile-maleic anhydride copolymer and 15-35 pts. wt. powdered polyamide 10T (PA10T), and combining the powdered polyamide 10T with powdered styrene-acrylonitrile-maleic anhydride copolymer, uniformly mixing, melting, granulating, and grinding into a micron-sized particulate modified phenylthiocarbamide mixture, and adding the particulate modified phenylthiocarbamide mixture to 50-250 pts. wt. second dispersant and stirring to prepare a phenylthiocarbamide (PTC) mixture, separately adding the PTC mixed solution and 500-2500 pts. wt. dispersant slowly to the stirred palladium quantum dot-doped graphene-carbon black slurry. The mixed solution is transferred to a reaction kettle at 90-95 degrees C, after reacting for 1-4 hours, it is naturally cooled, and stirring is continued during the reaction process to prepare a palladium quantum dot-doped graphene-based mixed solution. The preparation of PTC graphene-based conductive ink involves adding 0.5-2.5 parts of structure stabilizer and 1-4 parts of leveling agent to the palladium quantum dot-doped graphene-based mixture while stirring the palladium quantum dot-doped graphene-based mixture, stirring for 2-6 hours with 500-5000 rotations/minute to prepare PTC graphene-based conductive ink. The heteropoly acid is one or a combination of phosphomolybdic acid, silimolybdic acid, phosphotungstic acid and silicotungstic acid. The PA10T is PA10T modified by glass fiber.