While there is an intuitive connection between wall brightness and the electrical demand for illuminating a room, there has been little data reported to quantify this relationship. Here, we report the relative electrical load needed to light a room at the 500 lux level specified by European lighting standard EN12464-1:2011, as a function of wall brightness. A room was painted...
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Powder coatings are typically made by combining resins, a crosslinker, fillers, organic or inorganic absorption pigments, and additives together in an extruder. The resin is melted, and the ingredients are intensely mixed into the resin. The extruded resin is collected and milled to a fine particle size distribution to then be sprayed.
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Polysilazanes are pre-ceramic polymers with a silicon-nitrogen backbone. In recent years they have developed as a high-performance binder in protective coatings for transportation vehicles, commercial and residential buildings, and industrial plants. This article reviews their structure-property relationship and highlights their performance in high-temperature, surface hardness, weathering and corrosion protection, and anti-graffiti applications.
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Current State of the TiO2 Market “Demand for TiO2 is highly correlated to GDP growth over the long term. In the short term, however, market demand has historically been affected by concerns around security of supply—as well as inventory positioning throughout the cycle—rather than just due to fluctuations in customer demand,” observes Bryan Snell, president of Chemours Titanium Technologies. The...
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My recent articles on Hansen Solubility Parameters (CoatingsTech, May, July, and September 2018) have raised questions about what other solvent properties are important and about how to choose solvents. The main job of solvents is as carriers for resins, pigments, and other components. Other functions include controlling viscosity for application and flow-out, aiding in film formation, and wetting of pigments...
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Active Minerals International (AMI), supplier of high-quality gel grade attapulgite products for tape joint compounds, paint, and asphalt roof coatings, adhesives, and sealants, and oil well drilling has announced that it is fully recovered from a direct hit by the full force of Hurricane Michael, a Category 4 hurricane and the biggest storm to hit the Florida Panhandle in the...
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by Cynthia Challener, CoatingsTech Contributing Writer
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Liquid coatings and inks are facing increased pressure with respect to the presence of volatile organic compounds (VOCs). As a result, ink and coating formulators have to balance safety, regulatory, and emission standards while meeting their customers’ performance requirements. For low-VOC, metallic formulations, aluminum pigments are used to impart a desirable silver or metallic effect with excellent hiding power. In...
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In recent years, thin film intumescent coatings have become the preferred choice for the protection of structural steel. This is a result of their ability to provide a cost-effective passive fire protection solution while maintaining the aesthetic qualities of the steel, which is being demanded by more and more architects and engineers.
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