Paint and coating basics

- Oct 24, 2019-

Paint OR coating

Paint and paint are now the same thing. Most of the early paints used vegetable oil as the main raw material, so it was called “paint”. The paint contained more scientific and technological ingredients and was widely used in modern technology and industry. It can be said that the paint contains paint. However, there are some customary names for the paint, such as latex paint, primer, topcoat, etc.

Paint composition

The coating generally consists of four parts: a film-forming substance, a filler (pigment filler), a solvent, and an auxiliary agent. Depending on the performance requirements, the composition may change slightly. For example, the varnish has no pigment and filler, and the powder coating may have no solvent. The main harmful to the human body is the organic solvent.

Paint coating classification

According to the coating form: liquid coating (solution type, emulsion type, dispersion type, solventless type), solid coating (powder coating), and the like.

According to the pigment content: varnish, paint, etc. According to the film forming process: primer, putty, intermediate paint (middle coat), top coat, varnish and so on.

According to the use of coatings: architectural coatings, industrial coatings, general coatings, special coatings. Industrial coatings include wood coatings, automotive coatings, marine coatings, and light industrial coatings.

According to film forming materials: phenolic paint, alkyd paint, nitro paint, polyurethane paint, epoxy paint, etc.

According to the coating function: anti-rust paint, anti-corrosion paint, temperature paint, fire retardant paint, insulating paint, anti-fouling paint, etc.

According to film formation mechanism: volatile dry coating, hot melt drying coating, air drying coating, drying coating, multi-component curing coating, radiation curing coating, etc.

According to the construction method: spray paint, dipping paint, electrophoretic paint, self-priming paint, etc.


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