Correct Selection Of Color Coated Steel Plate

Reasonable selection of color-coated plates can not only meet the requirements of use, but also reduce costs to the greatest extent. If the material is not selected properly, the result may be that the performance of the material exceeds the requirements for use, causing unnecessary waste, or it may not meet the requirements for use, resulting in degradation or unavailability. Therefore, the purchaser should attach great importance to the necessity of choosing color-coated plates, and consult relevant experts when necessary.

The choice of color-coated board mainly refers to the choice of mechanical properties, substrate type and coating weight, front coating performance and reverse coating performance. The purpose, the corrosiveness of the use environment, the service life, the durability, the processing method and the degree of deformation are important factors to consider when choosing a color plate.

The type of substrate and the weight of the coating are mainly selected according to factors such as the purpose, the corrosiveness of the use environment, the service life and the durability. Anti-corrosion is one of the main functions of color-coated panels. The type of substrate and the weight of the coating are the main factors that affect the corrosion resistance of color-coated panels. The color-coated panels for construction usually use hot-dip galvanized substrates and hot-dip aluminum-zinc alloy substrates, mainly because of these two factors. This kind of substrate has better corrosion resistance.

The choice of front coating performance mainly refers to the choice of coating type, coating thickness, coating color difference, coating gloss, coating hardness, coating flexibility, adhesion, coating durability and other properties.

Commonly used topcoats are polyester, silicon modified polyester, high-durability polyester and polyvinylidene fluoride. There are certain differences in hardness, flexibility, adhesion, durability, etc. of different topcoats. Polyester is currently the most widely used coating; silicon-modified polyester is modified by silicone, which has higher durability and gloss; high-durability polyester has both the advantages of polyester and its durability Improved and cost-effective; polyvinylidene fluoride has excellent durability and the coating has good flexibility. The top coat is mainly determined according to factors such as the purpose, the corrosiveness of the use environment, the service life, the durability, the processing method and the degree of deformation.

Commonly used primers include epoxy, polyester, and polyurethane. There are certain differences in adhesion, flexibility, and corrosion resistance of different primers. Epoxy and substrate have good bonding strength and high corrosion resistance; polyester and substrate have good bonding and excellent flexibility; polyurethane is a primer with relatively good overall performance.