Rigid waterproofing-flexible waterproofing performance composite capillary crystalline waterproofing coating

Abstract

The invention discloses a rigid waterproofing-flexible waterproofing performance composite capillary crystalline waterproofing coating and a preparation method thereof. The rigid waterproofing-flexible waterproofing performance composite capillary crystalline waterproofing coating has rigid waterproofing and flexible waterproofing functions. The preparation method comprises the following steps of 1, adding an acrylic emulsion, a styrene-acrylic emulsion or an acrylic emulsion-styrene-acrylic emulsion mixed emulsion having any ratio into a stirring pot and carrying out uniform stirring, 2, orderly adding bentonite, titanium dioxide and silica powder into the mixture and carrying out stirring for a time period, 3, orderly adding heavy calcium carbonate powder and wollastonite powder into the mixture and carrying out stirring for a time period, 4, orderly adding an inorganic silicate penetrant, an organic silicon waterproofing agent and an inorganic nano-binder into the mixture and carrying out stirring for a time period, and 5, adding an antifoaming agent into the mixture and carrying out stirring for a time period to obtain the finished product.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a rigid-flexible composite permeable crystal waterproof coating. Background technique [0002] At present, the commonly used waterproof coatings are polyurethane waterproof coatings, which are generally made of polyurethane and coal tar as raw materials. The tar gas it volatilizes is highly toxic and not easy to remove, so it was banned in my country in 2000. The polyurethane waterproof coating that is still on sale uses asphalt instead of coal tar as a raw material. However, when using this kind of coating, it is generally diluted with organic solvents such as toluene and xylene, so it also contains toxicity. In addition, traditional waterproof coatings only have flexible waterproof functions (painted on the surface of buildings, evaporated by solvents or moisture) Or the chemical reaction of the two components forms a thin film, which isolates the surface of the building from water, so...

AI Technical Summary

Problems solved by technology

However, when using this kind of coating, it is generally diluted with organic solvents such as toluene and xylene, so it also contains toxicity. In addition, traditional waterproof coatings only have flexible waterproof functions (painted on the surface of buildings, evaporated by solvents or moisture) Or the chemical reaction of the two components forms a thin film, which isolates the surface of the building from water, so as to play the role of waterproof and sealing, which is flexible waterproof function) or rigid waterproof function (after the paint is painted, the surface of the coating is formed Outside a layer of flexible waterproof membrane, if the concrete cracks or breaks, the osmotic crystalline components in the coating can penetrate into the concrete structure and react with calcium, sodium and other components in the concrete to form crystals, which fill the voids in the concrete and increase the density of the concrete. increase, to achieve the purpose of waterproofing, it is a rigid waterproof function), and at the same time there are few waterproof coatings with rigid and flexible waterproof performance, so it has become a hot spot in research and development in this field