Marine port engineering concrete anti-corrosive paint

Abstract

The invention discloses the technical field of marine port engineering corrosion prevention, and particularly relates to a marine port engineering concrete anti-corrosive paint which is prepared fromthe following raw materials: 70-90 parts of epoxy resin, 7-9 parts of polysiloxane, 5-15 parts of an expanding agent, 12-30 parts of a polyamide curing agent, 16-20 parts of aluminum paste and 7-9 parts of an ethylene glycol butyl ether acetate coalescing agent. The polysiloxane is added into the epoxy resin, so that the intrinsic internal stress of the anti-corrosive paint is reduced, the high-temperature resistance and flexibility of the anti-corrosive paint are improved, and therefore, the weather resistance of the anti-corrosive paint is effectively enhanced, the defects of brittleness andhigh cracking tendency of the anti-corrosive paint are eliminated. Meanwhile, a hydrophobic film is formed on the concrete surface by using the polysiloxane, invasion of water vapor and other corrosive media is prevented, and the time of corrosion in concrete is prolonged. The expanding agent in the anti-corrosive paint is composed of aluminum silicate, aluminum chloride and calcium sulfate, andthe addition of the expanding agent can reduce the shrinkage rate of the anti-corrosive paint after curing, thereby ensuring the effectiveness of the anti-corrosive paint.

Description

technical field [0001] The invention relates to the field of marine port engineering anticorrosion technology, in particular the concrete anticorrosion coating for marine port engineering. Background technique [0002] In recent years, with the advancement of economic construction in coastal areas, a large number of marine projects have emerged one after another. At present, my country has built more than 200 offshore oil platforms. At the same time, the number of cross-sea and coastal bridge projects is on the rise. Infrastructure plays an important role in the development of our country's national economy. However, compared with general projects, the seawater environment of seaport projects is relatively harsh, and the corrosion and damage speed of seawater to reinforced concrete structures is fast, making the use of reinforced concrete structures safe Seriously threatened, my country's coastline exceeds 20,000km, and the climatic conditions vary greatly from south to north,...

AI Technical Summary

Problems solved by technology

[0005] The existing common anti-corrosion coatings use epoxy resin as the main film-forming substance. Thermosetting polymer oligomers formed by the reaction of epoxy groups, epoxy resin anti-corrosion coatings have high adhesion, high strength, convenient curing and excellent anti-corrosion performance, but there are ether bonds in the epoxy resin molecules, resulting in resin Molecules are easy to degrade and break chains under ultraviolet radiation, which makes the outdoor weather resistance of the coating poor, easy to lose light and powder, and the internal stress of the epoxy resin is large after curing, and the coating film is brittle and easy to crack. Aiming at the above shortcomings, a proposal is made Concrete Anticorrosion Coating for Ocean Port Engineering

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