Paint composition for preventing corrosion and process for forming an aluminum oxide coating layer using the same

Abstract

The present invention relates to a coating composition that resists corrosion and enhances the long-term stability of steel structures, and a method of forming an aluminum oxide coating using the coating composition. The method for forming an aluminum oxide coating according to the present invention includes step (a) preparing zinc (Zn) powder, 0.3 to 1.0% chromium (Cr) powder, 0.5 to 1.0% zinc (Zn) powder, 0.5 to 1.0% A powder mixture of nickel (Ni) powder, 0.06 to 0.15% of phosphorus (P) powder and the remaining aluminum (Al) powder, and step (b) uniformly mixing the powder mixture prepared above with the binding resin, And the mixed mixture is evenly sprayed on the surface of the steel structure to form a coating. The method of forming the aluminum oxide coating according to the present invention is very economical and can be completed even at normal temperature. Therefore, by uniformly forming aluminum oxide coatings with good physical properties For example, the aluminum oxide coating on the surface of the steel structure, such as adhesion, ductility, elasticity, etc., can effectively prevent the steel structure from being corroded and enhance the long-term stability of the steel structure.

Description

technical field [0001] The present invention relates to a paint composition which resists corrosion and enhances the long-term stability of steel structures, including iron, and a method of forming an aluminum oxide coating using the paint composition. More specifically, a paint mixture capable of uniformly forming a corrosion-resistant alumina coating having good physical properties even at normal temperature, and a method of forming an alumina coating using the paint mixture. Background technique [0002] In general, most so-called steel structures including iron are exposed to corrosive environments such as air and the like. Therefore, people widely use the method of anti-corrosion treatment on the surface of steel structure to prevent corrosion. [0003] For example, a method has been studied by forming a coating on the surface of a steel structure with a paint such as epoxy paint, vinyl paint, fluororesin paint, acrylic paint, chlorinated rubber paint, or the like. Ho...

AI Technical Summary

Problems solved by technology

However, because it is an organic paint, although the initial effect is good, the deformation properties of the paint such as thermal expansion coefficient and ductility are greatly different compared with iron

Therefore, there is a problem with organic coatings that the formed coating is separated from the steel structure because the adhesion will gradually decrease over time

Especially epoxy paint, its problem is that it is difficult to apply to outdoor steel structures exposed to light for a long time, because the resin itself is easily decolorized under the action of ultraviolet rays contained in the exposed light

The problem with fluororesin coatings is that the elasticity of the contained rubber components decreases, causing cracks, and their stability gradually deteriorates

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