Powder coatings reviewed
Thursday, 25 November 2010
Powder coatings offer considerable advantages, but may have to face major challenges. An up-to-date review discusses these issues.
The use of powder coatings has increased significantly Source: Clariant
The market share and the areas of use of powder coatings have steadily increased since their industrial introduction in the 1960s. In many respects powder coatings offer considerable advantages: a clean and simple painting process with simple achievement of high film builds. Coatings for different fields of use offer generally good corrosion protection properties, adaptable weathering properties and mechanical robustness of the paint film, all with generally acceptable costs. Due to growing concern with energy consumption, powder coatings will have to take further steps towards reduction of curing temperatures. Other issues for the future include the quest for cost-effective powders with greater exterior durability than "superdurable" polyesters, and some limitations of the curing agents which have replaced hazardous TGIC. A review in the December issue of the European Coatings JOURNAL will cover all these issues.
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