This report describes an experimental study of thermal-stability, mechanical, and flammability properties of foams of several different densities made of three different polyimides. The study was performed because (1) prior such studies were performed on polyimide films rather than foams and (2) the synthesis of polyimide foams is a relatively recent development. There is a need to determine the suitability of each foam for potential applications — for example, as flame retarders, thermal and acoustic insulators, gaskets, seals, vibration-damping pads, spacers in adhesives and sealants, extenders, and flow and leveling aids.
This work was done by Erik S. Weiser and Terry L. St. Clair of Langley Research Center, Martha K. Williams of Kennedy Space Center, and Gordon L. Nelson and James R. Brenner of Florida Institute of Technology. To obtain a copy of the report, "High-Performance Polyimide Foams," access the Technical Support Package (TSP) free on-line at www.nasatech.com/tsp under the Materials category.
This invention has been patented by NASA (U.S. Patent Nos. 6,133,330 and 6,180,746). Inquiries concerning nonexclusive or exclusive license for its commercial development should be addressed to
Refer to LAR-15977/15767.