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What are the four basic components of coatings

2022-03-31 15:36:47
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Coatings generally consist of four basic components: film forming material (resin, emulsion), pigment (including body pigment), solvents and additives (auxiliaries).  

1 the film forming material is the main component of the coating, including oils and fats, oil processing products, cellulose derivatives, natural resins, synthetic resins and synthetic emulsions. The film-forming material also includes some nonvolatile active diluents. It is the main material that makes the coating firmly adhere to the surface of the coating to form a continuous film. It is the basis of the coating and determines the basic characteristics of the coating.  

2 additives, such as defoamer, leveling agent, etc., and some special functional additives, such as substrate wetting agent, etc. These additives generally can not form a film and add a small amount, but they play a very important role in the process and durability of the base material to form a film.  

3 pigments are generally divided into two kinds, one is coloring pigment, common titanium dioxide, chrome yellow, etc., and the other is physical pigment, which is often referred to as filler, such as calcium carbonate and talc powder.  

4 solvents include hydrocarbons. Solvents (mineral oil essence, 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 helps to apply and improve some properties of the 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 coating or film, it can be divided into solution, latex, sol, powder, gloss, extinction and colorful art coatings.


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