Spray Depositable High Temperature Nanoporous Polyorganosiloxane Nanocomposite Thermal Barrier Coatings for Aircraft Structural Surfaces Navy SBIR FY2009.1 Sol No.: Navy SBIR FY2009.1 Topic No.: N091-033 Topic Title: Spray Depositable High Temperature Nanoporous Polyorganosiloxane Nanocomposite Thermal Barrier Coatings for Aircraft Structural Surfaces Proposal No.: N091-033-0728 Firm: NanoSonic, Inc. P.O. Box 618 Christiansburg, Virginia 24068 Contact: Vince Baranauskas Phone: (540) 953-1785 Web Site: http://www.nanosonic.com Abstract: The objective of this Phase I SBIR program is to develop spray depositable, environmentally durable nanoporous polyorganosiloxane nanocomposite thermal barrier coatings for protecting aircraft structures from temperatures > 500 oF. The proposed coating technology will serve as a replacement for MIL-PRF-85285 paints and maintain compatibility with MIL-PRF-23377 / MIL-PRF-85582 primers. To meet this challenge, NanoSonic will synergistically combine the low temperature flexibility and environmental durability of its pioneering high temperature hybrid polysiloxane copolymers with the hardness and thermal stability of reinforcing silsesquioxane nanoparticles to afford novel lightweight nanoporous coatings with thermal conductivities < 25 mW/m.K, bulk coating densities < 200 kg/m3 and mechanical durability within aerospace environments. Additionally, NanoSonic's hybrid polysiloxane coatings will be tailored for spray deposition and curing at room temperature, thermal stabilities > 800 oF and strong adhesion to a broad spectrum of metallic and composite aircraft structures. Importantly, the proposed research effort will build from related high temperature, spray depositable high temperature hybrid polysiloxane coatings developed by NanoSonic that have demonstrated thermal stabilities > 750 oF, exceptional flame resistance per ASTM E 1354, elastomeric resilience and rigorous abrasion resistance. Benefits: NanoSonic's spray depositable, mechanically robust nanoporous thermal barrier coatings will have utility within a broad spectrum of DoD and commercial aerospace, automotive, marine and electronic industries. By providing tailorable nanoporosity, facile deposition techniques, environmental robustness and ultra low thermal conductivity (< 25 mW/m.K), the proposed nanoporous hybrid copolymer coatings will provide lightweight thermal management solutions for enhanced component lifetimes, increased operational temperatures and reduced maintenance costs for countless systems challenged by thermal degradation and failure. Return