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This study examines the effectiveness of various types of corrosion inhibitors in a waterborne styrenated acrylic coating, based on salt fog results, (ASTM B117). All of the samples were made using high speed dispersion.
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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.
Caretakers of outdoor monuments, sculptures and high-value architectural metalwork face formidable preservation challenges. Durable, low-maintenance coatings are needed that provide longer-lasting protection against corrosion and degradation, while being safe for the environment. We describe work done in collaboration with conservators at the Philadelphia Museum of Art, and Portland State University, to develop water-based fluoropolymer coatings that meet the critical needs of the conservation and architectural communities.
Today’s water-based intumescent coatings provide improved fire resistance, allowing architectural exposed structural steel (AESS) to be featured prominently. This article examines the environmental/health benefits of water-based coatings over traditional, solvent-based coatings, and provides recommendations on how to apply these materials in a safe and attractive manner and ensure long-term performance.
A newly developed two-component zero VOC water based epoxy topcoat, based on a solid epoxy resin dispersion cured with modified amine, offers comparable performance to solvent based and high VOC water based epoxies and exhibits good corrosion and chemical resistance. The performance properties of the new innovative zero VOC water based epoxy topcoat are reviewed and compared to solvent based and high VOC water based epoxies used in industrial maintenance applications.