NASA NTRS · 19760004201
PMR polyimides with improved high temperature performance
Abstract
Studies were performed to investigate the effect of substituting a hexafluoro isopropyl idene connecting group for a carbonyl group of a PMR polyimide monomeric reactant on the thermo-mechanical properties processability of graphite fiber reinforced PMR polyimide composites. Composites were fabricated utilizing PMR methodology. Monomeric reactant solutions of various stoichiometric ratios were used to impregnate Hercules HTS graphite fiber. The processing characteristics and elevated temperature (600 F) mechanical properties of the composites are described.
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Vannucci, R. D., Alston, W. B.. 1975-01-01. PMR polyimides with improved high temperature performance. https://ntrs.nasa.gov/citations/19760004201
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