Waterproofing Coating

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Architectural waterproof coating refers to the coating whose film is able to prevent the leakage of rainwater or underground water, mainly including roof waterproof coating and underground-project waterproof coating. According to the state of film-forming material and the form of film-forming, it is classified as emulsion type, solvent-based and reactive.
The emulsion type waterproof coating is mono-component coating. After painted on a building surface, the film is formed along with the volatilization of water. With solvent released in construction, it is safe and non-toxic, pollution free and less likely to burn. The emulsion type waterproof coating includes water-emulsion reclaimed-rubber asphalt waterproof coating, cationic neoprene latex asphalt waterproof coating, acrylic emulsion asphalt waterproof coating, chlorine-partial copolymer emulsion series and VAE emulsion waterproof coating that has been developed in recent years etc.
A solvent-based waterproof coating is made by taking high molecular synthetic resin dissolved in an organic solvent as primary film-forming matter and adding in pigments, fillers, and additives etc. After painted on a building surface, the film is formed along with the evaporation of an organic solvent. It has excellent waterproofing effect and is available for the construction at fairly low temperature. However, in construction, there is much combustible, toxic organic solvent released out to pollute the environment. The solvent-based waterproof coating includes neoprene waterproof coating and chlorosulfonated polyethylene waterproof coating etc.
A reactive waterproof coating is a bi-component coating, and its waterproof film is formed through the reaction between the primary film-forming material and the curing agent in the coating. It has good water resistance, aging resistance, and elasticity, and is presently one kind of waterproof coating with good performances, including polyurethane and epoxy resin series etc.

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