NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Long-term thermal aging of 2 graphite-polyimide composite materialsTwo graphite/polyimide composite materials were aged in circulating air ovens at temperatures 204 C, 232 C, 260 C, and 288 C for various times up to 25000 hours. The composites were: (1) Celanese Celion 6000 graphite fiber and PMR-15 polyimide resin (Celion/PMR-15) and (2) Celion 6000 graphite fiber and LARC-160 polyimide resin (Celion/LARC-160). Three unidirectional specimen geometries were studied: short beam shear (SBS) specimens, flexure specimens, and 153 mm square panels. The interior regions of the square panels exhibited only minor property degradation. The individually aged SBS and flexure specimens exhibited large reductions in strengths after aging. Both laminate materials cracked and degraded preferentially at the specimen edge perpendicular to the fibers.
Document ID
19850003786
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Nelson, J. B. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1984
Subject Category
Composite Materials
Report/Patent Number
L-15849
NAS 1.60:2369
NASA-TP-2369
Report Number: L-15849
Report Number: NAS 1.60:2369
Report Number: NASA-TP-2369
Accession Number
85N12094
Funding Number(s)
PROJECT: RTOP 505-33-33-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available