Waterborne environment-friendly elastic colored coating and preparation method thereof

Abstract

The present invention relates to waterborne environment-friendly elastic colored coating and a preparation method thereof, the coating is made from a pigment component, a dispersing medium and varnish, the pigment component includes water, cellulose, an emulsion, a dispersant, a pigment and filler, an anti-aging agent, a defoaming agent, a film-forming aid, an antifreezing agent, an inorganic protective gel solution, a pH regulator, a bactericide and a thickener, the dispersing medium includes water, a film-forming agent, a rheological agent, an emulsion, a defoaming agent, an inorganic protective gel solution and a coupling agent, and the varnish includes water, emulsion, a pH regulator, a bactericide, a defoaming agent, a film-forming aid, an antifreezing agent and a thickener; to prepare, the pig component, the dispersing medium and the varnish are prepared first respectively, the pigment component is then added into the dispersing medium, and the varnish is added after color spot granulating. Compared with the prior art, by cold blending and modifying technology of emulsion, the coating is imparted excellent elastic cracking resistance, good elastic elongation, good tensile strength and good low-temperature toughness, is safe and environment-friendly and has a promising market prospect.

Description

technical field [0001] The invention belongs to the technical field of architectural coatings, and relates to a water-based environmentally friendly elastic colorful coating and a preparation method thereof. Background technique [0002] Nowadays, due to factors such as the depletion of natural stone resources, the damage to the natural environment caused by natural stone mining and environmental pollution, the natural color difference of stone source mines, and the poor safety of dry-hanging stone, natural granite is used as a building material. The method of interior and exterior facade decoration materials is gradually being eliminated, and at the same time, the method of replacing the color effect of natural granite in the form of paint has gradually become the mainstream. [0003] Water-based colorful paint is one of the hot spots in the field of decorative paint for interior and exterior walls of buildings in recent years. Its decorative effect is outstanding. It can b...

AI Technical Summary

Problems solved by technology

[0004] At present, the water-in-water multi-color paint products on the market are mixed, and in the existing technical solutions, this kind of paint is mainly rigid, and only pays attention to the appearance effect (smooth, thin, etc.) and engineering cost, ignoring the overall weather resistance and The ability to resist damage from natural factors makes the coating product less flexible and elastic

In addition, the putty used for building exteriors is uneven, and the performance of the paint film of the exterior facade coating layer is too poor. Some paints even have the phenomenon of efflorescence on the wall soon after being applied. With the passage of years of use, the paint film on the wall It is easy to crack and fade, which will eventually affect the stability of the building structure, cause water seepage and dampness in the house, and increase safety hazards

[0005] Some elastic system colorful paint products advertised on the market have been tested after actual testing. Although these paint products have certain flexibility at room temperature, if they are placed in a low temperature environment (-5°C), the paint film will become In addition to brittleness, if this kind of coating product is applied to the facade of a building, it will not be able to truly resist the thermal expansion and contraction of the wall caused by the ambient temperature difference, which will increase the risk of cracking of the wall finish layer and putty layer

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