A kind of anti-corrosion environmental protection coating material for metal and preparation method thereof

Abstract

An anti-corrosion and environment-friendly coating material for metal and a preparation method thereof, the coating material is composed of two kinds of organic nano-microspheres modified by PEI and water-based epoxy resin; the organic nano-microspheres are PMMA nano-microspheres and PS nanospheres. The preparation method of the anti-corrosion and environmental protection coating material for metal uses monodisperse polymethyl methacrylate (PMMA) and polystyrene (PS) organic nano-microspheres prepared by soap-free emulsion polymerization as fillers, and water-based epoxy resin Composite anti-corrosion and environmental protection coating materials for metals have the characteristics of small amount of fillers, environmental protection in the preparation process, and low energy consumption; the fillers have large specific surface area, strong adsorption, controllable particle size, and a large amount of negative The characteristics of electric charge can achieve good dispersion effect in resin with the help of unique surface effect. The anti-corrosion and environment-friendly coating material for metal obtained by the preparation method can effectively improve the barrier property of the water-based base coating and improve the anti-corrosion performance of the coating.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-corrosion and environment-friendly coating material for metals and a preparation method thereof. Background technique [0002] Metal is a high-strength, high-performance material. In the face of increasingly severe environmental problems, it is a wise choice to develop steel structure buildings instead of brick masonry and concrete buildings, especially in high-rise buildings and long-span structures, where metal plays a unique and irreplaceable role. However, metals are easily damaged by the erosion of corrosive media. The huge harm of metal corrosion is not only reflected in economic losses, but also brings heavy casualties, environmental pollution, and waste of resources. Therefore, it is necessary to take protective measures against metals. The use of coatings for anti-corrosion protection of building steel structures has a series of advantages incomparable to othe...

AI Technical Summary

Problems solved by technology

However, due to the poor barrier properties of water-based epoxy anti-corrosion coatings, its development has been hindered to some extent.

People usually introduce inorganic particles to compound them to achieve the purpose of increasing barrier properties. However, due to the fact that nano-inorganic particles are easy to agglomerate and have poor compatibility with organic resins, stress cracking and protection defects are prone to occur at the particle aggregation points, which cannot achieve good modification complementation. Effect

Therefore, the existing water-based composite coatings are difficult to meet people's needs, and it is urgent to develop a new type of anti-corrosion and environmental protection coating material for metals.

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