It's time to explain the color coated steel coil. Today we will take a look at the details of the color coated steel coil when using it. Let's take a look at it next.
1. Different primers for color coated steel coil have certain differences in adhesion, toughness and corrosion resistance. Epoxy has good adhesion to the substrate and high corrosion resistance, but the toughness is not as good as other primers. Polyester has good adhesion to the substrate and excellent toughness, but its corrosion resistance is not as good as epoxy resin. Polyurethane is a primer with good overall performance. The primer is usually selected by the supplier according to the production process, use, corrosiveness of the use environment, and matching relationship with the topcoat.
2. Corrosion resistance usually increases as the thickness of the coating increases. When ordering, the thickness of the coating should be determined according to factors such as the corrosiveness, service life and durability of the use environment.
3. Different topcoats of color coated steel coil are different in hardness, flexibility, adhesion and durability. Polyester is the most widely used coating at present, with average durability, good hardness and toughness, and moderate price. Silicon modified polyester has high durability, gloss and color retention, but its toughness is slightly lower, and high weather resistance polyester has a higher cost performance. Polyvinylidene fluoride has excellent durability, good toughness, but low hardness, few colors available, and high price.
The above introduction is today's introduction. The color coated steel coil topcoat is mainly affected by application occasions, use environment corrosiveness, service life, durability, processing methods, and degree of deformation. If you want to know more, please look forward to the next issue.
