▎ 摘　　要

NOVELTY - An environmentally-friendly waterproof coating material comprises a superhydrophobic material and a coating composition. The superhydrophobic material contains 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. 10%-sodium hydroxide, 25-45 pts. wt. silylating agent and 8-15 pts. wt. deionized water. The coating composition contains 20-30 pts. wt. lignin, starch, diatomaceous earth, calcium ash, calcium carbonate, defoamer, dispersant and deionized water. USE - Waterproof coating material (claimed). ADVANTAGE - The waterproof coating material is environmentally-friendly, and has excellent waterproof performance and suppressed generation of moisture defects due to the usage of calcium powder. DETAILED DESCRIPTION - An environmentally-friendly waterproof coating material comprises a superhydrophobic material and a coating composition. The superhydrophobic material contains 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. 10%-sodium hydroxide, 25-45 pts. wt. silylating agent and 8-15 pts. wt. deionized water. The coating composition contains 20-30 pts. wt. lignin, 20-30 pts. wt. starch, 16-18 pts. wt. diatomaceous earth, 10-12 pts. wt. calcium ash, 10-15 pts. wt. calcium carbonate, 0.5-1 pt. wt. defoamer, 0.8-1 pt. wt. dispersant and 15-30 pts. wt. deionized water. Also claimed is manufacture of environmentally-friendly waterproof coating material, which involves mixing the coating composition, mechanically-stirring for 10-15 minutes, adding the superhydrophobic material, stirring for 15-20 minutes at rate of 100 rpm, ultrasonically-dispersing at 18-25 degrees C under ultrasonic power of 300W for 8-12 minutes, and maintaining at room temperature for 35-45 minutes. The superhydrophobic material is obtained by ultrasonically-cleaning graphene with deionized water for 25-40 minutes, drying in oven at 65-80 degrees C for 4.5-6 hours, mixing 2.5-6 pts. wt. water-soluble cationic surfactant and 8-15 pts. wt. deionized water, uniformly stirring, adding 15-25 pts. wt. processed graphene, magnetically-stirring for 5-10 minutes, drying, supplying 55-75 pts. wt. sodium silicate solution through a cationic resin exchange column and a weakly basic anion resin exchange column to obtain a silicic acid solution, adjusting pH of the silicic acid solution to 7-8 with 10%-sodium hydroxide solution, concentrating at 75-80 degrees C under reduced pressure for 20-30 minutes to obtain silica nano-sol, adding 1.2-1.3 moles graphene to the silica nano-sol, ultrasonically-stirring at 35-50 degrees C for 6-8.5 hours, removing the graphene and deionized water, drying at room temperature for 12-24 hours, adding 1.4 moles graphene and 25-45 pts. wt. silylating agent, stirring at 20-35 degrees C for 4.5-6 hours, removing graphene, washing with absolute ethanol until pH is 6.8-7.2 and vacuum-drying at 60 degrees C for 6 hours. The coating composition is obtained by pulverizing 20-30 pts. wt. starch to particle size of 800-900 mesh, stirring at 70-80 degrees C for 15-25 minutes, adding 20-30 pts. wt. lignin, stirring for 30-35 minutes, adding 10-12 pts. wt. calcium ash, 11-15 pts. wt. calcium carbonate, 0.8-1 pt. wt. dispersant and 15-30 pts. wt. deionized water, stirring at room temperature for 15-20 minutes, adding diatomaceous earth, stirring for 30-45 minutes, adding 0.5-1 pt. wt. defoamer, and mechanically-stirring for 25-55 minutes.