Stone-like coating for outer wall

Abstract

The invention relates to the field of wall surface coatings, in particular to a stone-like coating for an outer wall. The stone-like coating is prepared from the following components in parts by mass:100 to 200 parts of emulsion, 300 to 400 parts of colored sand, 7 to 15 parts of a thickening agent, 0.5 to 1 part of a pH regulator, 8 to 15 parts of a coalescing agent, 0.5 to 1 part of a dispersing agent, 0.5 to 1 part of a defoaming agent, 0.5 to 1 part of a bactericide, 5 to 10 parts of a water repellent and 150 to 200 parts of deionized water, wherein the colored sand is used after being subjected to spray drying by using an aqueous solution of a chitosan/PEG blender. According to the stone-like coating for the outer wall, disclosed by the invention, the problems of high possibility oflayering, low film forming and drying speed and the like of an existing stone-like coating can be effectively solved; meanwhile, the usage of the colored sand in the formula is greatly reduced, so that the cost is reduced, and the application of natural colored sand in the coating is also facilitated.

Description

technical field [0001] The invention relates to the field of wall coatings, in particular to a real stone paint coating for exterior walls. Background technique [0002] Real stone paint is a kind of paint with a decorative effect similar to marble and granite. It is mainly formulated with natural stone powder of various colors and applied to the imitation stone effect of building exterior walls. The application of natural stone in the field of architectural decoration has a long history, and its noble, natural, simple and luxurious style has won the favor of architects and users, and it is also one of the important symbols of the external image of high-end buildings. [0003] The buildings decorated with real stone paint have natural and real natural color, which gives people elegant, harmonious and solemn aesthetic feeling. It is suitable for indoor and outdoor decoration of all kinds of buildings. Especially when it is decorated on curved buildings, it is vivid and lifel...

AI Technical Summary

Problems solved by technology

Some real stone paint coatings will turn white every time it rains, and the coating will become loose, and after the rain stops, the coating will return to its original color after the sun stops. The reason is that the water resistance of the coating is not good. Absorbed water, it may also be that the high molecular polymer, that is, the emulsion is not completely dry, and the film is not formed in time, causing the emulsion to turn white when it meets water

But the biggest reason is that the traditional real stone paint does not have any fillers and has low hiding power, so the spreading rate of general construction is low, at least 4-5 kg ​​per square meter, and there is a certain loss, resulting in The paint film is not easy to dry

Moreover, the traditional real stone paint also has the problem that it is easy to sink to the bottom after long-distance transportation, which makes it difficult to construct after arriving at the construction site.

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