Water-based anticorrosive coating with rust and preparation method thereof

Abstract

The invention relates to a water-based anticorrosive coating with rust and a preparation method thereof. The water-based anticorrosive coating with the rust comprises the raw materials: 22-35 parts of de-ionized water, 35-45 parts of a fluorine-containing emulsion with the rust, 1-3 parts of an additive, 8-13 parts of an antirust pigment, 1-3 parts of color paste, 5-10 parts of filler, 2-8 parts of a transforming agent or a rust stabilizing agent, and 1.5-3.5 parts of an anti-settling agent, wherein the fluorine-containing emulsion with the rust is a coreshell emulsion prepared from a monomer, an emulsifying agent and an initiating agent; the emulsifying agent comprises the components of a phosphate emulsifying agent and a sodium sulfonate emulsifying agent; a shell part comprises the transforming agent or the rust stabilizing agent. The preparation method comprises the following steps of: stirring part of the de-ionized water, the additive, the transforming agent or the rust stabilizing agent, the anti-settling agent, the antirust pigment and the filler, and grinding the mixture into slurry; adding the fluorine-containing emulsion with the rust and the like while stirring to prepare the anticorrosive coating with the rust. The coating is nontoxic, odorless, non-combustible, non-explosive, non-volatile and low in VOC (volatile organic compounds), can be used for replacing a derusting and descaling process; a protective primer with a high adhesion force is formed; a conventional derusting process can be replaced; the coating can be directly applied to a steel structure or maintenance engineering of mechanical equipment.

Description

technical field [0001] The invention relates to coatings in the field of chemical industry, in particular to a water-based anti-corrosion coating with rust and a preparation method thereof. Background technique [0002] Metal materials have become indispensable and important materials in various fields of the national economy, especially steel, which occupies a larger proportion. Because metal materials are prone to chemical or electrochemical corrosion and damage to the surrounding medium under natural conditions or working conditions, it is not conducive to sustainable economic development and also has a certain impact on the environment. Corrosion and protection is an important science. Through appropriate corrosion control techniques and methods, corrosion damage can be prevented or slowed down, and the economic loss and social harm caused by corrosion can be minimized. [0003] There are many methods of anti-corrosion. Among them, coating anti-corrosion is still the mo...

AI Technical Summary

Problems solved by technology

[0006] However, most of the film-forming substances of these water-based rust-resistant and anti-rust coatings are acrylic emulsions. The main problems are that the physical and mechanical properties of the coating film are slightly poor, the coating film is not dense enough, and the waterproof and impermeable properties are not good, so Salt water resistance, heat and humidity resistance, and salt spray resistance are not ideal, which affects its popularization and application

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