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ETFE (F40) powder coating (polyethylene vinyl nitrile copolymer) is an ethylene based thermoplastic polymer (ETSO) that began to be widely used in the late 1980s and has now become an essential element in architectural and urban space design. It has the advantages of low cost, energy saving, light weight, flexibility, spot resistance and aging resistance. Therefore, ETFE (F40) powder coating is increasingly favored by designers and architects. ETFE (F40) powder coating spraying treatment is also a common maintenance and repair method for ETFE (F40) powder coating. It can maintain the surface performance of ETFE (F40) powder coating components and avoid damage under meteorological conditions such as ultraviolet radiation, weathering, and pollution.
Firstly, when selecting ETFE (F40) powder coating spraying materials, the selection should be based on factors such as usage location and environmental characteristics. Generally speaking, ETFE (F40) powder coating spraying materials that are resistant to weathering, aging, impact, pollution, acid and alkali, and have high gloss and tensile strength should be selected. In addition, it is best to choose a low-temperature spraying technology with good low-temperature resistance, because the low-temperature performance of ETFE (F40) powder coating plastics is poor. The use of low-temperature spraying technology can effectively avoid the occurrence of cracking and loosening.
Secondly, before spraying ETFE (F40) powder coating on the exterior wall, it is necessary to perform pre-treatment on the exterior wall. This step is to avoid?? The key steps for the color and shape changes of ETFE (F40) powder coating exterior wall surface. The pre-treatment process for exterior walls generally includes water washing, spraying, etc. Water washing can remove surface impurities, while spraying can greatly improve surface adhesion, helping to prolong the adhesion and durability of ETFE (F40) powder coating spray coatings.
In addition, during the construction process of ETFE (F40) powder coating for exterior wall spraying, it is also necessary to apply ETFE (F40) powder coating on a large scale according to the actual situation, combined with specific environmental conditions such as local weather and building characteristics, to meet the requirements of the final use effect. The application amount of spraying needs to consider factors such as atmosphere pollution, UV radiation, cold, humidity, etc., to ensure the correct application amount and absorption of the coating.
Finally, after the ETFE (F40) powder coating is sprayed on the exterior wall, ultraviolet blocking coating should be applied to prevent the invasion of external ultraviolet rays, extend the service life of the coating, prevent external pollutants from entering the coating, and ultimately achieve a comprehensive protective effect.
When maintaining the ETFE (F40) powder coating for exterior walls, strong degreasing ability and corrosion resistance should also be the primary consideration. Suitable cleaning agents should be selected for cleaning. If aging of the exterior wall coating is found, timely maintenance should be carried out to protect the ETFE (F40) powder coating for exterior walls.
In summary, ETFE (F40) powder coating for exterior wall spraying is a task that requires high quality and performance. It requires strict control of the construction process, correct selection of spraying materials, and combined with local weather, building characteristics, environmental conditions, and other factors, the application of ultraviolet line blocking coating and regular maintenance are required to achieve the long-lasting and durable effect of ETFE (F40) powder coating spraying.