Water-based epoxy anticorrosive paint and preparation method thereof

Abstract

The invention provides a water-based epoxy anticorrosive paint and a preparation method thereof. The water-based epoxy anticorrosive paint comprises a component A and a component B in a weight ratio of 1:(2-3), wherein the component A and component B are mixed only when in use. The component A comprises the following ingredients in percentage by mass: 30-40% of water-based epoxy resin emulsion, 18-25% of potassium silicate, 18-25% of lithium silicate, 1-3% of water-based wetting and dispersing agent and 15-25% of deionized water. The component B comprises the following ingredients in percentage by mass: 80-90% of zinc powder, 5-10% of corundum, 0-5% of filler and 5-10% of antirust pigment. By adopting the two-component system composed of the component A and component B, the component B is added into the component A, evenly stirred and filtered, and can be subjected to spray construction. The production technique and use operation are very simple and convenient, have the advantages of environment friendliness and energy saving, and are safe to use. The water-based epoxy anticorrosive paint can be widely used in various hardware materials, and has higher decorative performance.

Description

technical field [0001] The invention relates to the field of water-based anti-corrosion materials, in particular to a water-based epoxy anti-corrosion coating and a preparation method thereof. Background technique [0002] With the rapid development of the national economy and the expansion of the scale of infrastructure construction, the problem of protective coating for many engineering projects has become an important topic in the field of anti-corrosion engineering. Especially in the anti-corrosion coating of the friction surface of the bolted and welded beam connection part of steel facilities such as ships and bridges, it is necessary to use an anti-corrosion coating with excellent anti-rust and anti-skid performance for protection. A commonly used method at present is to use electric arc sprayed aluminum. The anti-slip coefficient of the electric arc sprayed aluminum layer is high, but the energy consumption of the electric arc sprayed aluminum construction process is...

AI Technical Summary

Problems solved by technology

A commonly used method at present is to use electric arc sprayed aluminum. The anti-slip coefficient of the electric arc sprayed aluminum layer is high, but the energy consumption of the electric arc sprayed aluminum construction process is high, and the porosity of the aluminum coating is high, and it is easy to rust after long-term storage, so need special protection

[0003] CN201520941U Chinese patent discloses that the composite protective coating structure of the bridge bolted friction surface is to spray a layer of inorganic zinc-rich anti-rust and anti-skid coating on the metal layer to seal it, which can ensure the anti-slip coefficient and lasting corrosion resistance, but The scheme is relatively complicated, involving electric arc spraying aluminum system and painting system, and the cost is relatively high

CN103146234B Chinese patent discloses another kind of solvent-based inorganic zinc-rich anti-rust and anti-skid coating, which is composed of three components A, B and C. The difficulty of construction and the controllability of quality are ensured, and the scheme is an alcohol-soluble inorganic zinc-rich system with low solid content and high solvent content. A large amount of thinner is also used in construction and cleaning, resulting in high VOCs content in this scheme. Not in line with environmental trends

[0005] At present, the common traditional solvent-based anti-corrosion coatings also have many disadvantages, such as high cost, containing VOC toxic volatile substances, and the physical properties of some types of anti-corrosion coatings are not ideal, etc. The solvents used in the system are all flammable and explosive dangerous goods. , there are great safety hazards in the production, transportation and construction process

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