▎ 摘　　要

NOVELTY - Waterproof type cement based coating comprises superhydrophobic material as component A, emulsion as component B and inorganic powder as component C. The component A comprises graphene, ethyl orthosilicate, silane coupling agent, absolute ethyl alcohol, aqueous ammonia and deionized water. The component B comprises hard monomer, soft monomer, functional monomer, superhydrophobic material, auxiliary agent, plasticizer, emulsifier, dispersant, preservative, antifoaming agent and initiator. The component C comprises e.g. common silicate cement and water reducing agent. USE - Used as waterproof type cement based coating. ADVANTAGE - The coating has good binding strength, impact resistance and stability. DETAILED DESCRIPTION - Waterproof type cement based coating comprises superhydrophobic material as component A, emulsion as component B and inorganic powder as component C. The component A comprises 35-50 pts. wt. graphene, 2.5-6 pts. wt. ethyl orthosilicate, 5-12 pts. wt. silane coupling agent, 55-75 pts. wt. absolute ethyl alcohol, 0.8-2 pts. wt. aqueous ammonia and 8-15 pts. wt. deionized water. The component B comprises 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. auxiliary agent, 1-5 pts. wt. plasticizer, 0.8-1.5 pts. wt. emulsifier, 0.5-1 pts. wt. dispersant, 0.5-1 pts. wt. preservative, 0.05-1 pts. wt. antifoaming agent and 0.05-0.1 pts. wt. initiator. The component C comprises 25-45 pts. wt. common silicate cement, 25-45 pts. wt. fly ash silicate cement, 20-30 pts. wt. of 200 meshes quartz sand, 15-10 pts. wt. carbon nanotube and 0.5-1 pts. wt. water reducing agent. Preparing waterproof type cement based coating comprises (i) ultrasonically cleaning graphene using deionized water for 25-40 minutes, drying in an oven at the constant temperature of 45-80 degrees C for 4.5-6 hours; adding aqueous ammonia, deionized water and three quarters of the anhydrous ethanol, and stirring to obtain uniform solution; adding ethyl orthosilicate and remaining anhydrous ethanol, stirring to obtain the uniform liquid, adding the uniform solution into uniform liquid, stirring and adding silane coupling agent to obtain treating liquid; adding graphene into the treating liquid, stirring at constant temperature of 20-35 degrees C for 4.5-6 hours, taking out the graphene, washing using absolute ethyl alcohol until the pH is 6.8-7.2, and vacuum drying at 60 degrees C for 6 hours to obtain graphene based superhydrophobic material component A; (ii) adding hard monomer, soft monomer, functional monomer and emulsifying agent into deionized water, homogenizing and stirring for 20-35 minutes to obtain pre-emulsified liquid; taking a reaction kettle set with a stirring device, a condensing device, a nitrogen protecting device and a feeding device, adding deionized water, starting the stirring device, adding 1/5 pre-emulsion and 1/5 initiator into the reaction kettle, heating to 80 degrees C, stirring, reacting to obtain bluish gloss emulsion, dropping the remaining pre-emulsion for 2.5-3.5 hours and initiator for 3.5-4 hours, controlling temperature at 80-85 degrees C, stirring under rotating speed of 100 revolutions/minute, keeping the temperature for 30 minutes after dropping the initiator, continuously adding auxiliary agent, plasticizer, dispersant, antifoaming agent and preservative, stirring under stirring speed of 80 revolutions/minute for 15-30 minutes, filtering and discharging; adding the superhydrophobic material into the mixed liquid material, and ultrasonic dispersing to obtain the component A liquid material, where the ultrasonic processing frequency is 20-130 KHz and the time is 3-5 minutes, and (iii) continuously stirring, dividing into three times, stirring and adding common silicate cement and fly ash Portland cement, stirring uniformly, continuously adding quartz sand, adding carbon nanotube and water reducing agent, and stirring for 30-60 minutes.