The difference and function of primer and topcoat

Comparison of base paint

The composition of primer: 1. Transparent primer: resin + extender pigment + solvent + auxiliary

  1. Colored primer: resin + extender pigment + colored pigment + solvent + auxiliary agent

The composition of the top coat: 1. Transparent top coat: resin + solvent + additives

  1. Colored topcoat: resin + colored pigment + solvent + additives

Color trimming finish: transparent finish + color precision

Colorant: solvent + color essence

The function of the primer:

Primer: Generally divided into two types: prime primer and primer:

  1. The first degree primer is a kind of sealing primer, which mainly protects the board and guarantees the coating quality
  2. The main function of the primer is to fill the pores, increase the thickness of the coating film, and make the object achieve a certain decorative effect, thereby reducing the amount of topcoat. The primer generally has Certain filling and sanding properties, colored primer also has certain hiding power

Topcoat: The function of topcoat is mainly to play the role of decoration and protection. From a functional point of view, the topcoat must have a certain degree of gloss, color retention, hardness, and adhesion ( Adhesion), leveling, etc., which are also the reasons why the topcoat does not have filling properties