Plastic powder manufacturers share types of anti-corrosion coatings

Plastic powder manufacturers share types of anti-corrosion coatings

Anti-corrosion coatings, generally divided into conventional anti-corrosion coatings and heavy anti-corrosion coatings, is an essential paint in paint coatings. So what are the anti-corrosion coatings? The following PE powder manufacturers to understand, I hope to help you.

1. Phenolic resin coating

There are mainly alcohol-soluble phenolic resin, modified phenolic resin, pure phenolic resin and so on. The corrosion resistance of alcohol-soluble phenolic resin coating is good, but the construction is inconvenient, the flexibility and adhesion are not good, and the application is limited. Therefore, modification of phenolic resin is often required. Such as rosin modified phenolic resin and tung oil refining, adding a variety of pigments, grinding can produce a variety of enamel, the film is tough, low price, widely used in furniture, doors and Windows painting. Pure phenolic resin coating has strong adhesion, water and heat resistance, corrosion resistance and good weather resistance.

2, epoxy resin coating

Epoxy coating has good adhesion, excellent adhesion to metal, concrete, wood, glass, etc. Alkali, oil and water resistance, good electrical insulation performance. But the aging resistance is poor. Epoxy anti-corrosion coatings are usually composed of two components: epoxy resin and curing agent. The properties of the curing agent also affect the properties of the film. Epoxy ester resin coating is a one-component coating system in which epoxy ester resin is used as film forming material. Epoxy ester resin is formed by esterification of epoxy resin and vegetable oil fatty acids. Compared with common epoxy coatings, the coating has lower cost and poor alkaline resistance. Commonly used as a variety of metal primer and chemical plant outdoor equipment anti-corrosion paint.

3, polyurethane coating plastic powder processing

Polyurethane resins used in anti-corrosion coatings often contain two components: isocyanate-NCO and hydroxyl. When used, the two components are mixed and reaction cured to produce polyurethane (polyurethane).

4. Grease coating

Grease coating is a kind of coating with drying oil as the main film forming substance. It is characterized by easy production, good brushing, good wettability to the surface, low price, flexible paint film; However, the paint film is slow to dry, the film is soft, the mechanical properties are poor, and the resistance to acid and alkali, water and organic solvents is poor. The drying oil is often combined with anti-rust pigments to form anti-rust paint, which is used in atmospheric environments with low corrosion resistance requirements.

5. National paint

Raw lacquer, also known as raw lacquer, lacquer, is one of the specialties of our country. Raw lacquer is a milky, viscous liquid that comes from the bark of a growing sumac tree and is filtered through a fine cloth to remove impurities. After it is painted on the surface of the object, the color quickly changes from white to red, from red to purple, and for a longer time, it can become a hard and bright black paint film. The national paint has strong adhesion, tough film and good luster. It is resistant to soil corrosion, water and oil. The disadvantage is that it is toxic and easy to make people's skin allergic. In addition, it is not resistant to strong oxidants and has poor alkaline resistance.