Waterproof cement-based coating and preparation method thereof

Abstract

The invention discloses a waterproof cement-based coating and a preparation method thereof. The waterproof cement-based coating comprises a component A of super hydrophobic materials, a component B of emulsion and a component C of inorganic powder; the component A of the super hydrophobic materials prepared with a sol-gel method from, by weight, 35-50 parts of graphene, 2.5-6 parts of ethyl silicate, 5-12 parts of a silane coupling agent, 55-75 parts of absolute ethyl alcohol, 0.8-2 parts of ammonium hydroxide and 8-15 parts of deionized water; the component B of the emulsion is prepared from, by weight, 35-55 parts of hard monomers, 35-55 parts of soft monomers, 2-5 parts of functional monomers, 2-10 parts of super hydrophobic materials, 1-5 parts of a coalescing agent, 1-5 parts of plasticizer, 0.8-1.5 parts of emulgator, 0.5-1 part of a dispersing agent, 0.5-1 part of corrosion remover, 0.05-1 part of defoamer and 0.05-1 part of an initiating agent; the component C of the inorganic powder is prepared from, by weight, 25-45 parts of ordinary portland cement, 25-45 parts of portland fly-as cement, 20-30 parts of 200-mesh silica sand, 15-10 parts of a carbon nano tube and 0.-1 part of water reducer. During preparation, the obtained super hydrophobic materials are added in emulsion polymerization, so that stability of better bonding strength, waterproofness, impact resistance and the like of the coating is achieved.

Description

technical field [0001] The patent of the invention belongs to the technical field of coatings, and in particular relates to a waterproof cement-based coating and a preparation method thereof. Background technique [0002] Cement is a silicate powdery hydraulic inorganic gelling material, which can be mixed with water to form a slurry, which can be hardened in the air or better hardened in water, and can firmly bond sand, stone and other materials together , Widely used in civil engineering, water conservancy, national defense and other projects. Apply cement materials to architectural coatings, combine the rigidity and waterproofness of cement inorganic materials with the flexibility and high cohesion of polymer emulsions, and prepare a two-component, water-based architectural waterproof coating with outstanding waterproof effect and no It is non-toxic, non-polluting, easy to construct, and low in cost. It is an environmentally friendly product strongly advocated by the sta...

AI Technical Summary

Problems solved by technology

However, most of the cement-based waterproof coatings developed by my country are low-performance products, such as water-based PVC cement, neoprene modified asphalt coatings, etc., and there is still a certain distance compared with foreign countries.