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Toughened High-Temperature Thermoset CompositesLaminated composites of carbon fibers and either PMR-15 or LARC(TM)RP-46 polyimides toughened selectively by incorporating thin layers of Matrimid(TM) 5218 thermoplastic polyimide at interfaces between plies to form gradient semi-interpenetrating microstuctures. Toughening of composites accompanied by acceptably small decreases in strength and stiffness. Thick laminates of toughened composites fabricated easily at 500 psi. Materials useful in components of aircraft engines, where exposed to high temperatures for short times.
Document ID
19930000572
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Johnston, Norman J. (NASA Langley Research Center, Hampton, VA.)
Pater, Ruth H. (NASA Langley Research Center, Hampton, VA.)
Srinivasan, Krishna (Old Dominion Univ.)
Date Acquired
August 16, 2013
Publication Date
September 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 9
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
LAR-14885
ISSN: 0145-319X
Report Number: LAR-14885
Accession Number
93B10572
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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