Low-surface treatment solvent-free epoxy weight anticorrosion paint capable of painting under water

Abstract

A solventfree epoxy heavy-duty coating which can be treated on the lower surface and coated underwater is divided into first division distribution ratio and second division distribution ratio; wherein, the first division distribution ratio comprises the ingredients based on the parts by weight: 20-50 parts of epoxide resin, 4-7 parts of reactive diluent, 0.06-1 part of defoaming agent, 4-7 parts of special fatty acid soap, 0.5-2 parts of aerosol, 5-10 parts of mineral water absorber, 20-50 parts of packing material and 5-10 parts of pigment; the second division distribution ratio comprises the ingredients based on the parts by weight: 65-85 parts of mannich base firming agent and 15-35 parts of organic nitrogen base. As the epoxide resin with low molecular weight, the special fatty acid soap, the organic nitrogen base and the mineral water absorber are adopted, the heavy-duty coating can be coated in the wet underwater environment with rust, the coating is dense, and the adhesive force is strong. Therefore, the solventfree epoxy heavy-duty coating reduces the number of coating channels, improves the efficiency of construction, lowers the construction cost and prolongs the service life of corrosion resistance; when being solidified underwater, the coating has no problem of solvent volatilization, and can plays the role of protection effectively for a long time, thus overcoming the defect that solvent based coating brings pollution to the water environment due to solvent volatilization, and having absolute cost performance.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and relates to a solvent-free coating with low surface treatment and underwater paintability for anticorrosion of underwater steel members such as wharf bridge steel pipe piles, offshore oil production and drilling platforms, and large-scale water gate grooves, or reinforced concrete projects. Epoxy heavy duty coating. Background technique [0002] Wet and rusty low surface treatment coatings have been praised or criticized for their effects since they were developed, but in the face of the tidal range and corrosion of underwater components such as piers, wharves, docks, dams and oil drilling platforms, etc. The role of wet rust coating can not be ignored. However, only wet and rusty coatings cannot meet the repair coating and anti-corrosion requirements of underwater components, which requires the development of coatings that can be directly coated underwater and have a long service ...

AI Technical Summary

Problems solved by technology

In practical applications, although some products can be cured under water, it is difficult to coat the substrate to form a continuous coating film, or there are disadvantages such as long drying time, low adhesion, easy delamination, thin film and short protection life.