By Dr. Cameron Chai
Researchers from Bayer MaterialScience have found that the use of UV-curable polyurethane dispersions (PUDs) increases productivity and reduces curing time by meeting the weatherability, chemical-resistance and flexibility requirements.
Existing coatings applied on airplanes need 72 h for curing before the planes are moved out from the shelter. Hence, the industry is looking for solution to enhance efficiency and productivity by minimizing "dry-to-fly" time. The coatings used in aircraft must withstand a number of chemicals, including hydraulic fluid, motor oil and jet fuel. In addition, it must maintain flexibility to eliminate cracks in a wide range of temperatures. Also, to address the aerospace industry needs, a balance of water resistance, weatherability and flexibility is required. Bayer’s scientists have created and tested UV-curable materials and determined them as potential replacements for currently used aerospace coatings.
Senior associate scientist of Bayer, Todd Williams, will present these results at the Waterborne Symposium 2012 that is scheduled on February 16. He will deliver a presentation tilted, "UV-Curable Polyurethane Dispersions for Aerospace Topcoat Applications" at the event. Williams will assess the performance of products featuring UV-curable PUDs in terms of aesthetic, chemical and physical properties. The research works by Bayer’s scientists has concluded that UV-curable PUD-based binder is a promising solution for the aerospace coatings sector.