Waterborne Acrylic Coatings for Use in Industrial Facilities

摘要

Waterborne acrylic latex coatings for use in maintenance applications have been available forrnover thirty years. In the early 1980's, a second generation of waterborne acrylic resins was introducedrnwhich provided improved corrosion protection compared to earlier waterborne resins. An exposurernhistory of up to fifteen years now exists for these waterborne maintenance paints, and includes fieldrnexposures on steel structures in a variety of challenging environmental conditions. Examples describedrnin this paper include chemical storage tanks and structural steelwork in a number of industrial facilitiesrnaround the world, highway bridges located throughout the southern United States, and a 125-year-oldrncast iron lighthouse located in the severe marine atmosphere of Hunting Island, South Carolina. In allrncases, the one- and two-component waterborne acrylic coatings have provided many years of effectivernservice against the elements and have afforded the steel structures with excellent protection fromrncorrosion. New developments in one-component waterborne acrylic latex coatings which provide evenrnbetter corrosion resistance are also described, and demonstrate the potential for the use of water-basedrnsystems in even more demanding situations.