There are many classification methods for coatings, usually the following classification methods: According to the form of the product, it can be divided into: liquid coatings, powder coatings, and high solid coatings. Use dispersion media according to paint: solvent-based paint; water-based paint (emulsion paint, water-soluble paint). ?
According to application, it can be divided into architectural coatings, can coatings, automotive coatings, aircraft coatings, home appliance coatings, wood coatings, bridge coatings, plastic coatings, paper coatings, ship coatings, wind power generation coatings, nuclear power coatings, Pipe coatings, steel structure coatings, rubber coatings, aviation coatings, etc. ?
According to their performance, they can be divided into: anti-corrosion coatings, anti-rust coatings, insulating coatings, high temperature resistant coatings, aging resistant coatings, acid and alkali resistant coatings, and chemical media resistant coatings. According to whether there is color, it can be divided into: varnish and colored paint. According to its construction process, it can be divided into: sealer, putty, primer, primer, topcoat, and varnish. ?
According to the construction method, it can be divided into brush coating, spray coating, roller coating, dip coating, electrophoretic coating, etc.
According to function, it can be divided into non-stick coatings, Teflon coatings, decorative coatings, anti-corrosion coatings, conductive coatings, anti-rust coatings, high temperature-resistant coatings, temperature-indicating coatings, heat-insulating coatings, fire-retardant coatings, and waterproof coatings wait. ?
Household paints can be divided into interior wall paints, exterior wall paints, wood paints, metal paints, and floor paints.
According to paint film properties (anticorrosive paint, insulating paint, conductive paint, heat-resistant paint...)?
According to film-forming substances (natural resin paint, phenolic paint , alkyd paint, amino paint, nitro paint, epoxy paint, chlorinated rubber paint, acrylic paint, polyurethane paint, silicone resin paint, fluorocarbon resin paint, polysiloxane paint, vinyl paint...)?
Classified according to the type of base material: it can be divided into organic coatings, inorganic coatings, and organic-inorganic composite coatings. Due to the different solvents they use, organic coatings are divided into two categories: organic solvent-based coatings and organic water-based (including water-emulsion and water-soluble) coatings. Common coatings in life are generally organic coatings. Inorganic coatings refer to coatings produced using inorganic polymer materials as base materials, including water-soluble silicate systems, silica sol systems, organic silicon and inorganic polymer systems. There are two composite forms of organic-inorganic composite coatings. One is that the coating uses organic materials and inorganic materials as base materials during production to form a composite coating; the other is that organic coatings and inorganic coatings are combined with each other during decoration construction. ?
Classified by decorative effect: It can be divided into: 1. Flat coating with a flat and smooth surface (commonly known as flat coating), which is the most common construction method; 2. Sand-like decorative effect on the surface Sand wall paint, such as real stone paint; 3. Multi-layer paint that forms a three-dimensional decorative effect of concave and convex patterns, such as relief. Classified according to the parts used on buildings: divided into interior wall coatings, exterior wall coatings, floor coatings, door and window coatings and ceiling coatings.
Classified by use function: can be divided into ordinary coatings and special coatingsFunctional architectural coatings (such as fire retardant coatings, waterproof coatings, anti-mildew coatings, road marking coatings, etc.). Classified according to the color effect used: such as metallic paint, natural color paint (or called: solid color paint), transparent varnish, etc.
Coatings generally consist of four basic components: film-forming substances (resin, emulsion), pigments (including extender pigments), solvents and additives (auxiliaries).
1 Film-forming substances are the main components of coating films, including oils, oil processed products, cellulose derivatives, natural resins, synthetic resins and synthetic emulsions. Film-forming substances also include some non-volatile reactive diluents, which are the main substances that make the paint firmly adhere to the surface to be coated to form a continuous film. It is the basis of the paint and determines the basic characteristics of the paint.
2. Additives such as defoaming agents, leveling agents, etc., as well as some special functional additives, such as substrate wetting agents, etc. These additives generally cannot form films and are added in small amounts, but they play a very important role in the process and durability of the coating film formed by the base material.
3 Pigments are generally divided into two types, one is coloring pigments, common titanium dioxide, chrome yellow, etc., and the other is extender pigments, which are often referred to as fillers, such as calcium carbonate and talc.
4 Solvents include hydrocarbons. Solvents (mineral spirits, kerosene, gasoline, benzene, toluene, xylene, etc.), alcohols, ethers, ketones and esters. The main function of solvent and water is to disperse the film-forming base material to form a viscous liquid. It aids in construction and improves certain properties of the coating film.
According to the main film-forming substances used in coatings, coatings can be divided into oily coatings, fiber coatings, synthetic coatings and inorganic coatings; according to the properties of coatings or paint films, they can be divided into solution, latex, sol, powder and organic coatings. Glossy, matte and colorful art paints, etc.