Special anticorrosion water paint for steel structure and preparation method thereof

Abstract

The invention relates to the technical field of paint compositions, particularly relates to the technical field of waterborne antirust paint, and particularly discloses special anticorrosion water paint for a steel structure. The special anticorrosion water paint comprises a base material, an assistant and a pigment filler, wherein the base material is prepared by blending 30-40% of a waterborne epoxy modified acrylic emulsion and 10-15% of a waterborne one-component self-crosslinking fluorinated siloxane-acrylate emulsion in percentage by weight; the assistant comprises a neutralizer, deionized water, a wetting dispersant, a defoaming agent, a coalescing agent, an antiflash rusting agent, a thickener and an anti-settling agent. The invention further discloses a preparation method of the anticorrosion water paint, and the anticorrosion water paint is prepared by adding and blending the components step by step. The anticorrosion water paint does not use an organic solvent, does not contain toxic heavy metals, is non-toxic, has no pungent odor, is harmless to a human body, does not pollute the environment, and is also excellent in anticorrosive property, water fastness and water tolerance.

Description

technical field [0001] The invention relates to the technical field of coating compositions, in particular to the technical field of water-based antirust paint. Background technique [0002] Steel structure engineering is a structure mainly made of steel. It is one of the main types of modern building structures. The annual steel output in the world exceeds 1 billion tons. It is estimated that the steel equipment scrapped due to corrosion is equivalent to about 30% of the annual output. About 1 / 3 is permanently lost because it cannot be recycled, and the economic loss is as high as trillions of dollars. In addition to a large number of steel structures that are exposed to atmospheric corrosion outdoors, metal equipment around the coast and in chemical production are exposed to acids and alkalis. , Salt can corrosive medium corrosion is particularly serious, which not only requires a lot of money and manpower for perennial anti-corrosion maintenance, but also has potential sa...

AI Technical Summary

Problems solved by technology

[0004] The existing one-component water-based coatings used in domestic steel structures are difficult to meet the requirements of water resistance (300h) and anti-corrosion performance (240 hours of salt spray resistance)

Water-based acrylic emulsion paint has good weather resistance and fast drying speed, but it is prone to hot sticking and cold brittleness, and has poor anti-sticking and heat resistance

Epoxy resin has the characteristics of high strength, good adhesion, salt spray resistance and chemical resistance, and is widely used, but its outdoor weather resistance is poor, and it is a two-component product, which is troublesome in construction and expensive. higher

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