▎ 摘　　要

NOVELTY - Preparation of red light luminous coating material involves preparing graphene/red light fluorescent powder composite material (GRCM) by mixing graphene-deionized water solution and nanophores-deionized solutions and drying; preparing graphene/red light fluorescent powder/silica composite material (GRSCM) by dispersing GRCM in ethanol and covering silica core-shell; and mixing graphene/kaolin/silica composite filler and graphene/calcium carbonate/silica composite filler with deionized water, mixing GRSCM with deionized water, mixing two solutions, adding film-forming materials, and mixing. USE - Method for preparing red light luminous coating material (claimed). ADVANTAGE - The method increases luminous intensity and uniformity, and increases fluorescence powder dispersibility and storage stability. DETAILED DESCRIPTION - Preparation of red light luminous coating material comprises: (A) preparing graphene/red light fluorescent powder composite material by taking 1 g graphene, adding 100 ml deionized water, stirring and dispersing at 800-1000 kW and 500-800 revolutions/minute for 200 minutes to prepare graphene dispersion liquid, taking 25-100 g nanophores (Y0.9VO4:Eu3+0.04, Al3+0.06), adding 500 ml deionized water, dispersing at 1000-1200 kW and 800-1000 revolutions/minute for 300 minutes to prepare red light fluorescent powder dispersion liquid, dropping red light fluorescent powder dispersion liquid into graphene dispersion liquid at 100 kW, ultrasonic dispersing for 30-60 minutes, suction filtering, and drying; (B) preparing graphene/red light fluorescent powder/silica composite material by taking 0.5 g graphene/red light fluorescent powder composite material, stirring ethanol and dispersing at 300-500 kW and 1000-1200 revolutions/minute, adding water and ammonia water, stirring uniformly, adding ethyl orthosilicate and graphene/red light fluorescent powder composite material at mass ratio of 1.8:1, regulating pH at 9, reacting at 25 degrees C for 12 hours, carrying out centrifugation, washing with acetone and deionized water for 3 times to obtain precipitate, taking precipitate, drying at 90 degrees C for 5 hours, covering into silica core-shell, heating under argon gas atmosphere at 800 degrees C for 1.5 minutes, immersing in hydrofluoric acid, sonicating for 5-60 minutes, removing silicon dioxide, centrifuging and drying; and (C) taking 3-6 pts. wt. graphene/kaolin/silica composite filler and 2-4 pts. wt. graphene/calcium carbonate/silica composite filler, ultrasonic vibrating at 500-800 kW and 1000-1200 revolutions/minute, centrifuging, stirring 15-20 pts. wt. deionized water for 90-120 minutes to get first solution, taking 1-5 pts. wt. graphene/red light fluorescent powder/silica composite material, ultrasonic vibrating at 500-800 kW and 1000-1200 revolutions/minute stirring 15-20 pts. wt. deionized water for 90-120 minutes to get second solution, mixing two solution at 200-400 kW and 500-800 revolutions/minute, adding 70-80 pts. wt. film-forming materials, and mixing uniformly.