Characterization of PMR Polyimides - Correlation of Ester Impurities with Composite Properties

The presumed relationship of chemical impurities to final composite properties is the rationale for most chemical characterization studies. This study examines this relationship for PMR-polyimide resin. Ester/acid solutions of one monomer were aged at selected temperatures and chemical changes were...

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Bibliographic Details
Main Authors: Lauver, R. W, Vannucci, R. D
Format: Report
Language:English
Subjects:
ACIDS
CHEMICALS
COMPOSITE MATERIALS
CORRELATION
ESTERS
FABRICATION
FIBER REINFORCED COMPOSITES
GRAPHITE
IMPURITIES
Laminates and Composite Materials
MONOMERS
Organic Chemistry
Plastics
PMR
POLYIMIDE RESINS
Polymer Chemistry
POLYMERS
PROCESSING
SOLUTIONS(MIXTURES)
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Summary:The presumed relationship of chemical impurities to final composite properties is the rationale for most chemical characterization studies. This study examines this relationship for PMR-polyimide resin. Ester/acid solutions of one monomer were aged at selected temperatures and chemical changes were monitored spectroscopically. At selected intervals, graphite fiber reinforced composite panels were fabricated. Changes in resin processing characteristics and composite properties were determined. The correlation of these data are discussed as are related characterization studies of PMR-polyimide resin. jg p2