A kind of anticorrosion coating for steel structure in alkaline steam environment and preparation method thereof

Abstract

The invention discloses an anticorrosive coating for a steel structure in alkaline steam environment. The anticorrosive coating is prepared from the following components in percentage by mass: 25% to30% of organosilicone macromolecular polymer, 10% to 30% of dispersant, 0.8% of defoaming agent, 1.1% to 1.3% of thickener, 25% to 30% of SiO2 (silicon dioxide) powder, 20% to 25% of Al2O3 (aluminum oxide) powder, and 3% to 5% of TiO2 (titanium dioxide) powder. The anticorrosive coating has the advantages that the anticorrosive coating can be constructed with rust, the requirement for constructionenvironment is low, and the labor intensity of coating is greatly decreased; the certain self-cleaning ability is realized, the zinc-rich primer is not needed in the heavy anticorrosive field, and the environment-friendly property and reliability of heavy anticorrosive treatment are greatly improved.

Description

technical field [0001] The invention belongs to the field of paint preparation, and relates to an anticorrosive paint for steel structures in an alkaline steam environment and a preparation method thereof. Background technique [0002] The roof frame of the steel slag treatment plant is made of steel such as figure 2 As shown, when the steel slag is poured into the cooling pool, the violent hot steam rises and rushes directly to the top frame, which severely corrodes the top frame of the steel structure. Hot steam not only permanently corrodes the steel structure, but also easily causes the top frame to collapse, posing a serious safety hazard. [0003] In order to effectively prevent the corrosion of steel structures and delay corrosion, conduct on-site surveys and water quality tests on slag-treated steel structure workshops to understand the causes and characteristics of corrosion, and further better effectively prevent corrosion of steel structures in workshops. Steam ...

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Problems solved by technology

[0004] There are many ways to protect metals. Generally, organic coating materials such as polyurethane, acrylic resin, epoxy resin and silicone resin are applied on the metal surface. The functional group of polyurethane coating is -HN-COO-, and the applicable substrate is Metal, wood, fabric; the functional group of alkyd resin coating is -COO-, -OH, and the applicable substrate is metal and wood; the functional group of acrylic resin coating is -COOH, and the applicable substrate is metal, plastic, wood, fabric The functional groups of epoxy resin coatings are epoxy groups and -OH, and the applicable substrates are steel, plastic, and concrete. The commonly used alkyd resin has a simple process and is convenient for construction, but has poor weather resistance and is prone to yellowing and aging when exposed to sunlight; Silicone resin has high curing temperature and long time, poor adhesion and solvent resistance

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