▎ 摘　　要

NOVELTY - Preparing superhydrophobic JS waterproof coating comprises e.g. (i) mixing water-soluble cationic surfactant and deionized water, stirring, adding graphene, passing sodium silicate solution through column to obtain a silicate gel solution, adding graphene product into the silicon dioxide nano sol, adding graphene product to silanization reagent, mixing both solutions to obtain graphene-superhydrophobic material; (ii) preparing emulsion; and (iii) adding ordinary Portland cement to obtained product, adding quartz sand, carbon nanotubes and water reducing agent to obtain final product. USE - The method is useful for preparing superhydrophobic JS waterproof coating (claimed). ADVANTAGE - The superhydrophobic JS waterproof coating has excellent bonding strength, water resistance and impact resistance stability. DETAILED DESCRIPTION - Preparing superhydrophobic JS waterproof coating comprises (i) ultrasonic cleaning graphene using deionized water for 25-40 minutes, placing in a constant temperature of 45-80 degrees C and drying in oven for 4.5-6 hours, mixing 2.5-6 pts. wt. water-soluble cationic surfactant into the 8-15 pts. wt. deionized water, stirring uniformly, adding 15-25 pts. wt. graphene, magnetic stirring for 5-10 minutes, allowing to stand, cleaning, drying, passing 55-75 pts. wt. sodium silicate solution through a cationic resin exchange column and weakly basic anion resin exchange column to obtain a silicate gel solution, adjusting the pH of the above silicate gel solution to 7-8 using 10% sodium hydroxide solution, concentrating the one-fifth of the silicate gel solution reducer under pressure for 10-15 minutes, keeping the liquid level inside the container to constant, adding the remaining silicate solution, concentrating under reduced pressure at 75-80 degrees C for 20-30 minutes, preparing a silicon dioxide nano sol using one fifth sodium silicate solution, adding 1.2 pts. wt. graphene into the 1.3 pts. wt. silicon dioxide nano sol, ultrasonicating to temperature of 35-50 degrees C for 6-8.5 hours, removing the graphene and deionized water, cooling at room temperature for 12-24 hours, adding 1.4 pts. wt. above graphene to 25-45 pts. wt. silanization reagent, stirring at 20-35 degrees C for 4.5-6 hours, removing the graphene, washing with absolute ethanol until pH of 6.8-7.2, drying at 60 degrees C for 6 hours to obtain graphene-based superhydrophobic material; (ii) preparation of emulsion: (iia) adding 35-55 pts. wt. hard monomer, 35-55 pts. wt. soft monomer, 2-5 pts. wt. functional monomer and 0.8-1.5 pts. wt. emulsifier to deionized water, homogenizing for 20-35 minutes for pre-emulsification liquid; (iib) taking autoclave equipped with the stirring device, the condensing device, the nitrogen protection device and feeding device with deionized water, adding 1/5 pre-emulsion, 1/5 amount of the initiator into the reaction kettle, stirring at 80 degrees C, reacting to obtain blue luster with the emulsion, dropping the remaining pre-emulsion and initiator, controlling pre-emulsion dropping for 2.5-3.5 hours, controlling initiator dropping for 3.5-4 hours, maintaining temperature at 80-85 degrees C, controlling the stirring speed at 100 revolutions/minutes, incubating for 30 minutes, adding 1-5 pts. wt. film forming aid, 1-5 pts. wt. plasticizer, 0.5-1 pts. wt. dispersant, 0.05-1 pts. wt. defoamer and 0.5-1 pts. wt. preservative, stirring at speed of 80 revolutions/minutes for 15-30 minutes, filtering to obtain material; (iic) mixing above obtained superhydrophobic material and mixed liquid material described in step (iib), ultrasonic dispersing to obtain emulsion, where the ultrasonic treatment frequency is 20-130 kHz, and the processing time is 3-5 minutes; and (iii) stirring fraction product obtained in step (iii), adding 25-45 pts. wt. ordinary Portland cement while stirring, then 25-45 pts. wt. Portland fly ash cement, mixing evenly, adding 20-30 pts. wt. 200 mesh quartz sand, adding 15-10 pts. wt. carbon nanotubes and 0.5-1 pts. wt. water reducing agent, stirring for 30-60 minutes to obtain final product, where the superhydrophobic JS waterproof coating comprises superhydrophobic material as component A, emulsion as component B and inorganic powder as component C; component A is 15-25 pts. wt. graphene, 2.5-6 pts. wt. water-soluble cationic surfactant, 55-75 pts. wt. sodium silicate solution, 10-15 pts. wt. sodium hydroxide (10%), 25-45 pts. wt. silanization reagent and 8-15 pts. wt. deionized water; the component B is 35-55 pts. wt. hard monomer, 35-55 pts. wt. soft monomer, 2-5 pts. wt. functional monomer, 2-10 pts. wt. superhydrophobic material, 1-5 pts. wt. film forming aid, 1-5 pts. wt. plasticize, 0.8-1.5 pts. wt. emulsifier, 0.5-1 pts. wt. dispersant, 0.5-1 pts. wt. preservatives, 0.05-1 pts. wt. defoamer and 0.05-0.1 pts. wt. initiator; and the component C is 25-45 pts. wt. ordinary Portland cement, 25-45 pts. wt. Portland fly ash cement, 20-30 pts. wt. 200 mesh quartz sand, 15-10 pts. wt. carbon nanotubes and 0.5-1 pts. wt. water reducing agent.