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PVDF (polyvinylidene fluoride)-based coatings are recognized by architects as a premium weatherable coating technology. They provide years of color and gloss retention along with corrosion protection. However, PVDF based coatings have been limited to factory-applied finishes on metal since the coatings require high-temperature processing.
PVDF (polyvinylidene fluoride)-based coatings are recognized by architects as a premium weatherable coating technology. They provide years of color and gloss retention along with corrosion protection. However, PVDF based coatings have been limited to factory-applied finishes on metal since the coatings require high-temperature processing. A water-based latex technology has been developed for formulating into low-VOC, air-dry coatings with weathering properties that are comparable to the traditional PVDF based coatings. A full range of new weatherable coatings based on this technology are entering the marketplace such as infield metal refurbish coatings, cool roof white coatings for metal or non-metal surfaces, concrete coatings, stains and varnishes, etc.
In this paper, I will discuss such an example of when the predicted service of the coating determines that a more dynamic method must be utilized. I will discuss testing that was conducted for immersion service where flow of water over the surface was a major consideration. The question of how well the adhesion would hold up in real life service could not be properly answered by the degree of failure in this case. I discovered that the more important consideration was the survivability of the coating if a defect were introduced.
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There are a number of petrochemical plants that experience equipment failure and production loss due to corrosion. Proper maintenance of their existing equipment greatly reduces a plant’s down time therefore allowing production to continue. For those facilities that do not have an existing maintenance-painting program, we have developed a beginners / non-technical program guide that is easy to understand and implement as it addresses many plant’s existing and future coating systems.
Now more than ever, epoxy coatings on concrete will only prove successful if diligent care is given to the details of concrete preparation. Preparation is more than grinding or facing of an existing surface and should ideally begin in the developmental stages of the structure.