Application of nano silicon dioxide sol in water-based steel structure anticorrosive paint and protective paint

Abstract

The invention provides application of a nano silicon dioxide sol in a water-based steel structure anticorrosive paint, which comprises the following steps: adding a KH560 silane coupling agent, which accounts for 2-5% of acidic silica sol, into the silica sol, and coupling at 55+ / -5 DEG C to form a modified nano silicon dioxide sol; and adding into a water-based acrylic acid emulsion so as to be applied to the water-based industrial paint for steel structure corrosion resistance. The invention also provides a water-based steel structure anticorrosive paint comprises 3-6% of modified nano silicon dioxide sol, 40-60% of water-based acrylic acid emulsion, 11-16% of pigment, 16-21% of filler, 0.8-1.0% of various assistants and 10-15% of deionized water. The nano silicon dioxide sol is treated by the special technique, and reasonably matched with the emulsion to prepare the nano silicon dioxide sol modified acrylic acid water-based paint, so that the film-forming density and water resistance of the product are greatly enhanced, thereby obviously improving the protective property of the product.

Description

technical field [0001] The invention relates to an industrial coating composition, in particular to the application of nano-silica sol in water-based anticorrosion paint for steel structures, and a water-based acrylic industrial coating composition hybridized with modified nano-silica sol. [0002] Background technique [0003] For the one-component emulsion type acrylic water-based steel structure anticorrosion paint for steel structure anticorrosion applications, even if pigments and fillers with good chemical antirust and physical shielding functions are considered to improve the antirust performance of the product, due to the film-forming substance itself Some defects, such as: due to the emulsifier used in emulsion polymerization, it remains in the paint film from the beginning to the end, thus affecting the compactness and water resistance of the paint film, and finally affecting the protective performance of the product. [0004] Contents of the invention [0005]...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem of poor water resistance of acrylic water-based steel structure anticorrosion paint, and to provide a method of using modified nano-silica sol hybrid water-based acrylic acid to make water-based steel structures anti-corrosion Paint protection properties improved

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