Anti Corrosion Coatings Manufacturer

According to the principle of electrochemical corrosion, the corrosion of steel must have the presence of oxygen, water and ions, as well as the passage of ions to conduct electricity. The paint film prevents the existence of corrosive media and the surface of the material, and the passage of the corrosive battery increases the resistance. , The penetration rate of oxygen and ions to the paint film is different. The penetration rate of water is much higher than that of ions and oxygen. It is straightforward to penetrate the paint film less, so it is not necessary to consider their direct effect on the substrate metal.

Epoxy anti corrosion coatings are usually composed of epoxy resin and curing agent. The nature of the curing agent also affects the performance of the paint film. Commonly used curing agents are: aliphatic amines and their modified products, which are characterized by being cured at room temperature, unmodified aliphatic amines are more toxic, and aromatic amines and their modified products, which are characterized by slow reaction, often require heating to cure, and are more toxic Weak, perchlorovinyl paint, polyamide resin, characterized by good weather resistance, less toxicity, good elasticity, and slightly poorer corrosion resistance. Other synthetic resins such as phenolic resin and urea-formaldehyde resin.

Grease paint is a type of paint with drying oil as the main film-forming material. It is characterized by easy production, good paintability, good wettability to the surface, low price, flexible paint film, but the paint film dries slowly, the film is soft, the mechanical properties are poor, acid and alkali resistance, water resistance and resistance Poor organic solvent properties. Dry oil is often combined with anti-rust pigments to form anti-rust paint. It is used in atmospheric environments where corrosion resistance is not required. Raw lacquer, also known as national lacquer or large lacquer, is one of my country's specialty products.