▎ 摘　　要

NOVELTY - Graphene liquid comprises 260-570 pts. wt. brush-type electrocatalyst diatom ooze base powder, 1-10 pts. wt. thickening agent, 10-50 pts. wt. film-forming auxiliary agent, pH regulator, 50-150 pts. wt. water-soluble graphene solution, 500-800 pts. wt. acrylic acid resin water dispersion, 100 pts. wt. silicone-acrylate emulsion, 1-5 pts. wt. water-soluble dispersant and 1-2 pts. wt. antifoaming agent. The brush-type electrocatalyst diatom ooze base powder comprises 40-100 pts. wt. nano quartz powder, 50-110 pts. wt. nano zinc oxide, 30-50 pts. wt. nano tourmaline powder, 100-300 pts. wt. ultrafine diatom ooze and 50-100 pts. wt. rutile nano titanium dioxide and the pH of the graphene liquid was controlled at 5.1-7.8 by using a pH regulator. USE - The graphene liquid is useful in wall paint. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing graphene liquid comprising (a) taking nano quartz powder, nano zinc oxide, nano tourmaline powder, ultrafine diatom ooze and rutile nano titanium dioxide, uniformly mixing, drying at 50-60 degrees C for 6-12 hours and sieving to 80-100 mesh to obtain brush-type electro catalyst diatom ooze base powder,(b) taking brush-type electrocatalyst diatom ooze base powder, thickening agent, film-forming auxiliary agent, water-soluble graphene solution, acrylic acid resin water dispersion, silicone-acrylate emulsion, water-soluble dispersant and antifoaming agent, dividing the antifoaming agent into A and B, (c) (c1) adding antifoaming agent A, thickening agent and water-soluble dispersant to a mixer, stirring, dispersing at speed of 800-1200revolutions /minute for 10-15 minutes to obtain an initial mixture, (c2)adding brush type electrocatalyst diatom ooze base powder to the initial mixture obtained in step (c1), stirring at a speed of 1000-1200 revolutions /minute for 20-30 minutes to obtain an intermediate mixture and (c3) adding acrylic acid resin water dispersion, film-forming auxiliary agent and antifoaming agent B to the intermediate mixture, stirring at a speed of 500-700revolutions /minute, adding a pH adjuster, adjusting the pH to 5.1-7.8, adding water-soluble graphene solution, continuously stirring at speed of 1000-1200 revolutions/ minute for 30-50 minutes to obtain a graphene liquid; and (2) use method of graphene liquid comprising coating 10kg graphene liquid to a thickness of 5-40 m2.