High Performance, Environmentally Acceptable Conformal Coating for Aircraft Radar

The objective of the program is to develop a high-performance, environmentally acceptable (chromate-free, zero volatile organic compound (ZVOC)) conformal coating that meets the performance requirements for radar antenna systems. The Phase I program demonstrated the feasibility of developing a chromate-free coating with excellent corrosion protection properties and the required dielectric behavior. During the Phase II project, Luna Innovations Incorporated will optimize synthesis of the autoxidative water-based polyurethane dispersion that will be the foundation for the air-cured single-component, ZVOC conformal coating. Development of high-performance, non-chromate inhibitors pigments tailored for this application will provide the enhanced corrosion protection necessary for extended coating service life while maintaining the necessary dielectric properties. Performance of the coating will be extensively evaluated in accordance with appropriate military test methods and in direct comparison to a qualified product. Particular emphasis will be given to characterization of the coatings dielectric properties, resistance to environmental degradation, and corrosion protection performance. The Luna team will also address validation and field-testing, small-batch production, and commercialization of the optimized coating. Substantial cost and performance benefits with concomitant decreased environmental impact will be realized from the novel high performance system formulated to conform to existing logistical and operational requirements.