2022-10-19 10:07| 发布者: steelfu4mo| 查看: 1518| 评论: 0 |原作者: 佛山万庆物资
How to choose the color coating board correctly?
The correct selection of color coating plate should consider the natural environment, use environment, design life, structural characteristics of the building, to choose the matching steel types, specifications, coating and coating. The architect, the project owner and the processor are the consideration of the safety performance of the building (impact resistance, seismic, fire prevention, wind pressure resistance, snow resistance), residential performance (waterproof, sound insulation, heat insulation), durability (pollution resistance, durability, appearance maintenance), economy (low cost, easy to process, easy to maintain, easy to replace), etc. The performance requirements of color-coated steel plate mainly include the mechanical properties of the material (tensile strength, yield strength, elongation rate), coating properties (coating type, coating thickness and coating adhesion) and coating properties (coating variety, color, luster, durability, processability, etc.). Among them, wind resistance, impact resistance, snow resistance, earthquake resistance are related to the mechanical properties of the material, of course, and color pressure steel plate waveform, steel plate thickness, span, purlin distance, if the choice of appropriate color coated steel plate with the appropriate pressure steel plate design, can meet the safety factor of the building and can reduce the project cost. The durability, processing performance and appearance retention of materials are mostly determined by the durability of coating and coating.
For the choice of primer, the most important factors are two, one considers the primer and topcoat and the adhesion of the substrate, the other is that the primer provides most of the corrosion resistance of the coating. From this point of view, epoxy resin is the best choice. If you consider flexibility and UV resistance, you can also choose a polyurethane primer.
▎ back paint
For the back coating, the most correct choice is that if the color coated steel plate use state is a single plate, choose two layers of structure, that is, a layer of back primer, a layer of back surface paint. Primer and front of the same variety, face paint choose a layer of light color (such as white) polyester. If the color-coated steel plate is used in a composite or sandwich plate, the back is coated with an epoxy resin with excellent adhesion and corrosion resistance.
▎ functional color board
At present, there are many functional color coating steel plates, such as antibacterial color coating, anti-static color coating, heat insulation color coating, self-cleaning color plate, etc. The development of these products is to meet the special needs of users, but sometimes can not take into account other performance of color coating products. Therefore, users choose functional color coated steel plate must be clear about their real needs.