Single-component polymer modified asphalt waterproofing paint and preparation method thereof

Abstract

The invention provides a single-component polymer modified asphalt waterproofing paint and a preparation method of the single-component polymer modified asphalt waterproofing paint. The single-component polymer modified asphalt waterproofing paint consists of emulsified asphalt, vinyl acetate-ethylene copolymer emulsion, coke powder, an attapulgite thixotropic agent, a surfactant, a defoamer and a pH regulator. The preparation method comprises the following steps: adding emulsified asphalt to a container with a stirring function; then separately adding the vinyl acetate-ethylene copolymer emulsion, the coke powder, the attapulgite thixotropic agent, the surfactant and the defoamer, and stirring and mixing uniformly; and finally adding the pH regulator according to construction conditions, so as to obtain the single-component polymer modified asphalt waterproofing paints which are different in viscosity and can be sprayed or coated with a knife. The single-component polymer modified asphalt waterproofing paint has excellent mechanical property, chemical stability and weather fastness, is nontoxic, harmless, pollution-free and has no odor. The paint is an environment-friendly waterproofing paint.

Description

technical field [0001] The invention relates to a one-component polymer modified asphalt waterproof coating and a preparation method thereof, in particular to a vinyl acetate-ethylene copolymer emulsion blended with petroleum emulsified asphalt and other additives to obtain a waterproof coating suitable for scraping and spraying. Coatings and methods for their preparation. technical background [0002] Asphalt waterproof coating is an emulsion type waterproof coating, which can be applied by spraying, rolling or manual brushing, and forms a seamless waterproof and moisture-proof film through the evaporation of demulsification water. my country is rich in petroleum asphalt resources and low in price, and asphalt coatings have good waterproof performance and simple construction operations. Therefore, asphalt waterproof coatings are widely used in waterproofing and moisture-proofing of roads, bridges, interiors, roofs, and various pipelines and concrete. Corrosion protection of...

AI Technical Summary

Problems solved by technology

However, during the spraying process of the two-component paint, the A and B components must maintain a certain ratio. In addition, the calcium chloride and sodium chloride in the composition will not be lost due to the volatilization of water, but will permanently exist in the formed In the waterproof film, calcium chloride and sodium chloride have certain corrosiveness and water absorption, so they have a bad influence on the waterproofness of the film layer.

[0008] The viscosity of the above-mentioned various liquid asphalt waterproof coatings cannot be adjusted during use. If the viscosity is relatively thin, it is not conducive to scraping for spraying. If the viscosity is thick, it is conducive to scraping and not conducive to spraying. The construction method is not good. Flexible, when the viscosity is thicker, if it is diluted with water or solvent, it will affect the film-forming performance