The selection of color coated plate mainly refers to the selection of mechanical properties, substrate type (Plating type) and plating weight, front coating performance and back coating performance. Application, environmental corrosivity, service life, durability, processing method and deformation degree are important factors that should be considered when selecting materials.
Type of coating
1.Topcoat: Commonly used topcoats include polyester, silicon-modified polyester, high-durability polyester and polyvinylidene fluoride. There are certain differences in hardness, flexibility/adhesion, and corrosion resistance of different topcoats. .
2.Primer: The commonly used primers are epoxy, polyester and polyhelium ester, and there are certain differences in adhesion, flexibility and corrosion resistance of different primers.
coating thickness
The corrosion resistance of color-coated sheets is closely related to the thickness of the coating. Generally, the corrosion resistance increases with the increase of the coating thickness. The appropriate coating thickness should be determined based on environmental corrosivity, service life and durability.
Coating chromatic aberration
Color-coated boards may have chromatic aberration during production and use. Since chromatic aberration is affected by various factors such as production batch, color depth, use time, use environment, and purpose, it is usually determined by both the supplier and the buyer when ordering. negotiate.
coating gloss
The gloss of the coating is mainly selected according to the application and usage habits. For example, domestic color-coated panels for construction usually choose medium and low gloss, and color-coated panels for home appliances usually choose high gloss.
Coating hardness
The hardness of the coating is the ability of the coating to resist scratches, friction, collision, indentation and other mechanical effects, and is closely related to the scratch resistance, wear resistance, indentation resistance and other properties of the color-coated sheet. It is mainly based on the application. , processing methods, storage and transportation conditions, etc.
