One. Epoxy resin anti-corrosion coating
Epoxy anti-corrosion coatings are coatings formulated with epoxy resin as the film-forming material, along with pigments, fillers, additives, and solvents in specific proportions.
Due to the high polarity of hydroxyl and ether groups in the epoxy resin molecular structure, the resulting coating exhibits good chemical resistance, alkali resistance, and superior resistance to alkaline and high-temperature environments.
Epoxy anti-corrosion coatings are available in various types, with amine-based or their derivatives curing epoxy coatings and asphalt-epoxy anti-corrosion coatings being the most widely used. In recent years, solvent-free epoxy anti-corrosion coatings have also been used, and water-based epoxy anti-corrosion coatings show great potential for development.
II. Polyurethane Anti-Corrosion Coating
Polyurethane anti-corrosion coatings utilize chlorosulfonated polyethylene rubber as the primary modifier. These two-component, heavy-duty anti-corrosion coatings are manufactured using advanced processes and incorporate specialized additives, high-quality pigments, and auxiliaries.
Excellent corrosion resistance. The coating exhibits good adhesion, flexibility, abrasion resistance, and resistance to acids, alkalis, salts, oils, petroleum products, benzene solvents, water, boiling water, seawater, and chemical atmospheres.
- Excellent weather resistance. The coating exhibits good weather resistance, gloss retention, high gloss, and decorative properties, as well as good temperature resistance (capable of withstanding 160℃).
- Easy to apply.- Fast drying speed, can cure normally at 0°C.- Forms a single layer with minimal troweling.- Can be applied using standard application methods.
Three. Epoxy Zinc-Rich Anti-Corrosion Coating
Epoxy-zinc primer (three-component) consists of epoxy resin as the base material, combined with polyamide, zinc powder, and additives. The coating contains a high zinc content, providing cathodic protection and excellent anti-corrosion properties, making it a high-performance electrochemical protection coating.
Epoxy zinc-rich primers can be used on steel structures, equipment, and surfaces in industries such as mining, wellheads, shipbuilding, ports, bridges, towers, oil pipelines, chemical plants, and metallurgy, as a corrosion-resistant primer for substrates. They can also be used as a maintenance primer and as a corrosion-resistant primer for galvanized steel surfaces.
IV. High Solid Content Anti-Corrosion Coatings
Generally, coatings with a solid content (percentage by weight) of 80% or a solid content (percentage by volume) of 60% or higher are referred to as high-solid coatings. These coatings exhibit superior corrosion resistance and are primarily used in the automotive industry.
V. Water-based Anti-corrosion Coatings
Water-based anti-corrosion coatings primarily include epoxy, alkyd, acrylic, and polyurethane, as well as inorganic zinc silicate coatings. Currently, the water-based anti-corrosion coatings that have been successfully applied in industrial corrosion fields primarily include water-based epoxy coatings, water-based inorganic zinc silicate coatings, and water-based acrylic coatings. In the manufacturing process of water-based anti-corrosion coatings, solvents are generally not used, resulting in very low VOC content, and in some cases, VOC levels can even reach zero. Therefore, water-based anti-corrosion coatings are a current research focus.
Six. Epoxy Anti-Corrosion Coating
Epoxy anti-corrosion coating consists of epoxy resin, modified resin, anti-corrosion pigments, coloring pigments, additives, solvents, and curing agents. It exhibits excellent adhesion, durability, abrasion resistance, and impact resistance. Furthermore, its high solid content allows it to be used as a thick film coating.