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PMR polyimides with improved high temperature performanceStudies 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.
Document ID
19760004201
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vannucci, R. D. (NASA Lewis Research Center Cleveland, OH, United States)
Alston, W. B. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1975
Subject Category
Nonmetallic Materials
Report/Patent Number
E-8513
NASA-TM-X-71816
Report Number: E-8513
Report Number: NASA-TM-X-71816
Meeting Information
Meeting: Ann Reinforced Plastics Composites Conf.
Location: Washington, DC
Country: United States
Start Date: February 3, 1976
End Date: February 6, 1976
Sponsors: Soc. of Plastics Ind.
Accession Number
76N11289
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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