Steel structure aqueous corrosion resisting paint without need of cleaning rust and preparation thereof

Abstract

The invention relates to a water-base rusting anti-corrosion paint of a steel structure, and a manufacturing technology thereof. The water-base rusting paint comprises styrene-acrylic latex, ferric oxide, talcum powder, phosphoric acid, tannin, aluminum hydroxide, zinc oxide, zinc dihydric phosphate, potassium dichromate, a film-forming auxiliary agent, sodium hexametaphosphate, dibutyl phthalate, an antifoam agent and water which is added till 100 percent (mass). The preparation method of the paint of the invention is that a pigment filler is added into a ball mill to prepare pigment filler slurry according to a mixing ratio, the phosphoric acid, the tannin, the zinc oxide and the aluminum hydroxide are mixed and heated till the solution is clear so as to prepare transformation liquid, then the pigment filler slurry and the transformation liquid and other components are mixed and stirred, and finally a finished product is obtained after filtration. The paint of the invention is characterized by good performance and low cost, etc., can be used for hull painting with rust directly, and can be used not only as a base paint, but also as a surface paint.

Description

technical field [0001] The invention relates to a steel structure water-based anticorrosion coating with rust and a preparation method thereof, belonging to new materials in the coating field of the chemical industry. Background technique [0002] Because steel structure has a series of advantages such as high strength, good toughness, convenient manufacture, fast construction speed and short construction period, it has been more and more widely used in modern construction industry. However, its easy-to-corrosion characteristics have brought huge losses to the national economy. Spraying steel structure anti-corrosion paint is one of the most economical and reasonable measures in steel structure anti-corrosion measures. [0003] When general steel structures are painted with anti-corrosion coatings, there is already a certain thickness of corrosion layer on part of the surface. For ordinary anti-corrosion coatings, the rust must be completely removed so that the coatings are...

AI Technical Summary

Problems solved by technology

But the existing more successful water-based anti-corrosion coatings all are that the base paint is painted separately, and the construction is cumbersome, and the matching problem of the base paint must also be considered. If the base paint is not matched, it will affect the bonding of the base paint, affect the Corrosion resistance of coatings

However, the current water-based anti-corrosion paint with rust that combines the bottom and surface has certain requirements on the substrate, and the thickness of the rust layer is required to be less than 80 μm, and the price of the selected raw materials is relatively high, which increases the cost of the paint.

Images