Anti-corrosion process for steel structure

Abstract

The invention discloses an anti-corrosion process for a steel structure. The anti-corrosion process comprises the following steps of S1, surface pretreatment of the steel structure, S2, surface descaling of the steel surface, S3, preparation of waterborne rust anticorrosive coating for the steel structure, S4, preparation of a primer, S5, steel structure coating, and S6, paint coating quality inspection and acceptance. The anti-corrosion process combines the characteristics of an epoxy emulsion and an acrylic emulsion to improve the comprehensive performance of the coating, a polyaniline emulsion is directly added into the coating to solve the compatibility problem between polyaniline and other polymer emulsions and the stability problem of the prepared anticorrosive coating, the anti-corrosion performance of the coating is improved, acid and active hydrogen in conversion liquid and polyaniline can promote the curing of the epoxy resin to be used as a curing agent for an epoxy emulsion, the process is simple, and the cost is low. The anti-corrosion process of the steel structure is simple, has good anti-corrosion performance and simple construction, can greatly reduce the labor intensity of coating, has high weather resistance, and can realize long-term protection for the steel structure.

Description

technical field [0001] The invention belongs to the technical field of steel structures, and in particular relates to an anticorrosion process for steel structures. Background technique [0002] Coating anticorrosion is one of the important ways of metal anticorrosion. In order to obtain excellent anticorrosion effect, it is necessary to treat the surface to be painted, which not only consumes time and energy, reduces production efficiency, and increases construction cost, but also rust dust will harm human health. Even so, the result of the surface preparation may not meet the painting requirements. The rusty paint just makes up for this defect. The rusty paint is an antirust paint that can be directly painted on the surface without rust removal or simple rust removal. The pre-treatment of the paint is simple and reduces the construction cost. According to the principle of antirust, rust coatings can be divided into four categories: penetration type, conversion type, stab...

AI Technical Summary

Problems solved by technology

Oil-based coatings are mostly used in the anti-corrosion industry, and oil-based coatings are almost all selected in the field of heavy-duty anti-corrosion coatings. Traditional oil-based anti-corrosion coatings have complicated coating processes, harsh working conditions, and high labor intensity.