Epoxy resin is the average molecule contains two or more than two epoxy group of thermosetting resins.The main composition of epoxy resin coatings is epoxy resin and curing agent, auxiliary components such as pigment and filler.Because the epoxy resin has easy processing and forming, curing performance and other characteristics, widely used in metal anti-corrosion, structure and expansion monomer, epoxy modified by epoxy alloying, filled with inorganic modified can be made into anticorrosive coatings.Epoxy resin coating with excellent physical and mechanical properties, strong metal adhesion, also has good chemical resistance and oil resistance, especially the strong alkali resistance.
Due to epoxy resin molecular structure contains polar high hydroxyl and ether bond, good chemical resistance of the coating, good alkali resistance, heat alkaline medium is better.And because of its structure with rigid and benzene ring and head type of hydrocarbon chains arranged alternately, so the physical and mechanical properties of the coating is also quite good.Due to the presence of polar groups can have certain hydrophilic coating, if properly selected, the formula can get good coating resistance to water.Epoxy resin is a wide variety of anti-corrosion coatings, is the most widely used amine or its derivatives curing epoxy coating and epoxy asphalt anticorrosive coating.Solventless epoxy anticorrosive coatings in recent years have been applied, the other type epoxy anticorrosive coatings is very promising.
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