Water-based crosslinked epoxy anticorrosive coating based on wax modification and preparing method thereof

Abstract

The invention provides a water-based crosslinked epoxy anticorrosive coating based on wax modification and a preparing method thereof, and relates to the technical field of anticorrosive coatings. Thewater-based crosslinked epoxy anticorrosive coating is prepared from, by weight, 13-21 parts of epoxy resin, 2-5 parts of methyl ether, 2-5 parts of isooctanol, 10-15 parts of high-alkali-value sulfonate, 5-8 parts of a waxiness material, 3-8 parts of a surfactant, 2-5 parts of diethanol amine, 3-6 parts of polyamine resin and a cross-linking agent; the materials are fully mixed, 1.5-3 parts by weight of carboxylic acid are added for a neutral reaction, and the mixture is dispersed in 38-60 parts by weight of water. According to the water-based crosslinked epoxy anticorrosive coating and thepreparing method, the bondability is improved through the internally-added waxiness material, the dispersion state of the water-based crosslinked epoxy anticorrosive coating is stabilized in cooperation with the surfactant, the long-term anti-corrosion capacity can be improved, and the production cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, in particular to a wax-based modified water-based cross-linked epoxy anti-corrosion coating and a preparation method thereof. Background technique [0002] At present, steel frame structures are widely used in the fields of ships, aerospace, road and bridge construction, etc. Due to the harsh use environment, the requirements for the corrosion resistance of the steel frame surface are getting higher and higher, and metal alloys are prone to rust and surface corrosion in actual environments. Therefore, it is urgent to deal with the surface corrosion and rust of metal materials. Brushing anti-rust oil on the surface of metal materials can only play a temporary protective role, and the recovery and flammability of oil have potential safety hazards; the coating of paint is mainly carried out by the adsorption force between molecules, because the coating layer is thin , the corrosion ...

AI Technical Summary

Problems solved by technology

Brushing anti-rust oil on the surface of metal materials can only play a temporary protective role, and the recovery and flammability of oil have potential safety hazards; the coating of paint is mainly carried out by the adsorption force between molecules, because the coating layer is thin , the corrosion resistance is limited, the service life is short, and the purpose of long-term corrosion protection cannot be achieved

[0003] Adding a gas phase corrosion inhibitor to the existing anti-rust oil can play a certain anti-rust effect on the metal inner wall of the cavity structure through the volatilization and adsorption of the gas phase corrosion inhibitor. However, this kind of anti-rust oil will still volatilize the solvent, And the anti-rust oil itself cannot achieve the long-term anti-corrosion effect; the existing emulsified anti-corrosion wax has little safety hazard, but it is easy to cause reverse emulsification at the place where water accumulates, and the film is easy to be washed away, thus failing to achieve a long-term anti-corrosion cycle

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