The bonding force between the coating and the substrate includes mechanical bonding force, chemical bonding force, diffusion force, and dipole force. The amount of binding force directly affects the adhesion of the coating.

The main methods to improve the adhesion between the coating and the substrate are: sanding the substrate, sandblasting, reducing the construction viscosity of the coating, increasing the construction temperature, and improving the wettability of the substrate (using solvent wiping, corona, flame burning, oxidant Methods such as treatment), related to silicone is the use of adhesion promoters, that is, the use of a primer, the silicone material used for the primer is mainly silane. Alkoxysilane can improve the adhesion, fluidity, leveling, abrasion resistance, pigment and filler dispersion, water resistance and salt spray resistance of coatings and substrates. It has been widely used in various metals and silicon-containing materials. Material in the primer formulation.