Several important functional coatings

In a broad sense, coatings with certain special functions such as radiation resistance, aging resistance, and high peel strength are called functional coatings. Commonly used functional coatings mainly include the following types:

(I) Antifouling paint

Anti-fouling paints are generally painted on the underwater facilities and anti-rust paint on the bottom of the ship, located on the outermost layer. Its main role is to gradually release toxic materials through the hydrolysis, diffusion or exudation of the poisonous material in the paint film, so as to prevent the attachment of marine attached organisms to the underwater facilities or the bottom of the ship.

(B) waterproof coating

Waterproof coating refers to a coating used to prevent water ingress and leakage. The coating should have hydrophobic, flexible, elastic, adhesive properties to the base layer. Generally used in residential houses such as kitchens, bathrooms, basements, etc., in wet places.

(III) Anti-corrosion coating

Conventional anti-corrosion coatings are used to prevent corrosion of metals, protect the life of non-ferrous metals under general conditions, and heavy anti-corrosion coatings can be used in relatively harsh corrosive environments and have a longer time than conventional anti-corrosion coatings. A type of anti-corrosion coating during the protection period. Anti-corrosion coatings are widely used in construction, transportation, medical, petrochemical, electric power and other industries, and their anti-corrosion function lies in the coating's shielding effect, resistance effect, wet adhesion, chemical passivation and cathodic protection.

(D) high temperature coating

The high-temperature resistant coating refers to a coating that can withstand oxidation corrosion in a high temperature environment within a certain time limit within a certain temperature range, so as to protect the coated product from normal work under high temperature. The coating is widely used in steel manufacturing, metallurgy, petroleum industry, natural gas extraction, aerospace and other industrial fields.

(five) elastic coating

The elastic coating is based on a synthetic resin emulsion, formulated with pigments, fillers and auxiliaries, and applied to a certain thickness (dry film ≥ 150 μm). An elastic functional coating with a detailed crack that covers the substrate to stretch (move).