Watersoluble fluorine-carbon modified elastic paint for exterior wall of construction

Abstract

The invention discloses a water elastic coating used for the protection and decoration on the surface of an outer wall of a construction. The current elastic coating mainly aims at solving the stain resistance of the elastic coating, while relates less to the aspects of acid rain resistance and aging resistance. The mass percentage of each component in the coating is as follows: 10 to 20 percent of water, 2 to 4 percent of latent solvent, 0.5 to 1.0 percent of dispersant, 0.2 to 0.4 percent of multifunctional accessory ingredient, 0.2 to 0.5 percent of foam killer, 0.1 to 0.2 percent of preservative, 0.2 to 0.6 percent of mildew preventive and algaecide, 15 to 23 percent of acid resistant pigment, 5 to 18 percent of acid resistant filler, 10 to 15 percent of fluorocarbon latex, 30 to 40 percent of crylic acid elastic latex, 1 to 1.5 percent of film forming additive, 0.3 to 0.8 percent of rheological additive and 0.5 to 1.0 percent of thickening agent. The water elastic coating has the durability, the acid rain resistance and the stain resistance of fluorocarbon coating and simultaneously has the elastic crack resistance of acrylic acid elastic coating.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based elastic coating used for surface protection and decoration of building exterior walls. Background technique [0002] The exterior walls of buildings mostly use cement mortar plastering as the base layer. When the plastering mortar is hardened, hardening cracks are generated due to volume reduction; when the temperature changes, temperature cracks are generated due to thermal expansion and contraction; Dry shrinkage cracks caused by wet expansion and shrinkage; freeze-thaw cracks caused by water freezing and volume expansion when rainwater freezes and thaws on the wall in winter; structural cracks generated when the foundation subsides, resulting in protective decorative coatings on the surface of the exterior wall Cracks, rainwater and air seep into the wall with the cracks, deepening the damage to the building, such as corrosion of steel bars and carbonization of concrete. ...

AI Technical Summary

Problems solved by technology

However, due to the fact that coal-fired power generation is mainly used in China at present, the content of sulfur dioxide in the air is high, acid rain occurs frequently in various regions, and air pollution is serious, resulting in serious contamination and acid corrosion damage on the surface of the elastic coating, which greatly improves the decorativeness and durability of the elastic coating. decline

So far, in the development of elastic coatings, the main focus is on the stain resistance of elastic coatings, while the acid rain resistance and aging resistance of elastic coatings are rarely involved.

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