International. PPG announced that it has begun qualification and workshop testing for a family of aerospace sealants that are cured on demand using ultraviolet light, allowing for substantial reductions in process time, waste and costs while increasing efficiency.
Based on Permapol PPG polymer technology and known in the industry as on-demand cured sealants (SCOD), these patented sealants cure in seconds with the simple application of UV light, rather than the hours or even days needed for traditional curing products. These new sealants are fuel resistant, offer low shrinkage, are highly flexible and exhibit excellent physical properties.
PPG's SCOD products are being evaluated for qualification under SAE's new Aerospace Material Specification (AMS) 3102, written for UV-cured sealants. Several aircraft manufacturers have begun or will soon begin the process of evaluating and approving these products.
Modern commercial transportation and military aircraft use a wide variety of sealants for numerous applications, including coating the wing's integral fuel tanks to contain fuel, sealing fuselage joints for pressurization, filling depressions in the aircraft's outer structure to achieve a smooth surface, and providing corrosion protection qualities.
