02.02.15
Todd Williams, laboratory manager, Corrosion Protection, Coatings, Adhesives & Specialties (CAS), Bayer MaterialScience LLC, will present “Application and Evaluation of Coatings Over Hot-dipped Galvanizing,” 2:30-3:30 p.m., Tuesday, Feb. 3, during SSPC 2015 in Las Vegas.
During his presentation, Williams will highlight results from a study that benchmarked high-build polyaspartic coatings with epoxy/polyurethane coatings as well as application techniques. Ahren Olson, market manager, Corrosion Protection, CAS, Bayer MaterialScience LLC; and Kevin Irving, central sales and marketing manager, AZZ Galvanizing Inc., are contributing authors to the study.
According to Bayer, polyaspartic coatings were evaluated due to their ability to be applied in thick films, which reduces the number of coats necessary from two to one by eliminating the primer layer. Furthermore, unlike other coatings, polyaspartic coatings cure at room temperature, eliminating the requirement to pre-bake the galvanizing. Polyaspartic coatings were also found to perform as well as epoxy/polyurethane coatings in cyclic prohesion and wet adhesion evaluations over blasted hot-dipped galvanizing substrates.
The authors also emphasize that surface preparation is critical to achieving long-term performance, with abrasive blasting found to be the most effective surface preparation technique.
During his presentation, Williams will highlight results from a study that benchmarked high-build polyaspartic coatings with epoxy/polyurethane coatings as well as application techniques. Ahren Olson, market manager, Corrosion Protection, CAS, Bayer MaterialScience LLC; and Kevin Irving, central sales and marketing manager, AZZ Galvanizing Inc., are contributing authors to the study.
According to Bayer, polyaspartic coatings were evaluated due to their ability to be applied in thick films, which reduces the number of coats necessary from two to one by eliminating the primer layer. Furthermore, unlike other coatings, polyaspartic coatings cure at room temperature, eliminating the requirement to pre-bake the galvanizing. Polyaspartic coatings were also found to perform as well as epoxy/polyurethane coatings in cyclic prohesion and wet adhesion evaluations over blasted hot-dipped galvanizing substrates.
The authors also emphasize that surface preparation is critical to achieving long-term performance, with abrasive blasting found to be the most effective surface preparation technique.