Performance Assessment of Carbon Nanotube Containing Coatings and Sealants

Electromagnetic interference (EMI) has become a major concern in military applications, as EMI interference reduces the lifetime and efficiency of instrumentation and telecommunication equipment. Luna Innovations, in this Army Phase I SBIR, will assess the effectiveness of single walled carbon nanotube (SWCNT) additives in enhancing the EMI shielding of current military paints and coatings, while preserving or improving other coating characteristics (for example, corrosion resistance and durability). Single wall carbon nanotubes are prepared at Luna Innovations (nanomaterials division) and numerous other sources, and have properties and aspect ratios greatly influenced by the mode of preparation. In Phase I, Luna will evaluate various admixtures of single walled carbon nanotubes (functionalized and unfunctionalized) and current military coatings with respect to EMI shielding, durability, corrosion and chemical agent resistance. Carbon nanotubes of varying aspect ratios will be used, until the most promising formulations are identified for further research and commercial development. A detailed cost analysis will be completed in Phase II. Luna Innovations has assembled a dynamic team combining expertise in nanotube synthesis and functionalization/solubilization techniques, electrical engineering, corrosion science, a military coatings supplier and expert, and business/marketing specialists to ensure a successful program and transition to Phase II/Phase III optimization and commercialization.