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Thermomechanical Properties of M40J Carbon/PMR-II-50 CompositesTo increase performance and durability of high-temperature composites for potential rocket engine components, it is necessary to optimize wetting and interfacial bonding between high modulus carbon fibers and high-temperature polyimide resins. It has been previously demonstrated that the electro-oxidative shear treatments used by fiber manufacturers are not effective on higher modulus fibers that have fewer edge and defect sites in the surface crystallites. In addition, sizings commercially supplies on most carbon fibers are not compatible with polyimides. In this study, the surface chemistry and energy of high modulus carbon fibers (M40J and M60J, Torray) and typical fluorinated polyimide resins, such as PMR-II-50 were characterized. A continuous desizing system that uses an environmentally friendly chemical-mechanical process was developed for tow level fiber. Composites were fabricated with fibers containing the manufacturer's sizing, desized, and further treated with a reactive finish. Results of room temperature tests show that desizing reduces interface sensitive properties compared to the manufacturer's sizing and that subsequent surface re-treatment with reactive finish increases interface sensitive properties. Properties of thermally aged composites and composites with varying finish concentrations are also discussed.
Document ID
20040111220
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Ronald E. Allred
(Adherent Technologies (United States) Albuquerque, New Mexico, United States)
E. Eugene Shin
(Ohio Aerospace Institute Cleveland, Ohio, United States)
Linda Inghram
(Ohio Aerospace Institute Cleveland, Ohio, United States)
Linda McCorkle
(Ohio Aerospace Institute Cleveland, Ohio, United States)
Demetrios Papadopoulos
(University of Akron Akron, Ohio, United States)
Donald Wheeler
(Glenn Research Center Cleveland, Ohio, United States)
James K. Sutter
(Glenn Research Center Cleveland, Ohio, United States)
Date Acquired
August 21, 2013
Publication Date
May 11, 2003
Publication Information
Publication: Advancing Materials in the Global Economy : Applications, Emerging Markets and Evolving Technologies
Publisher: Society for the Advancement of Materials and Process Engineering
Volume: 48
Issue: 2
Issue Publication Date: May 1, 2003
Subject Category
Composite Materials
Chemistry and Materials (General)
Meeting Information
Meeting: 48th International SAMPE Symposium and Exhibition
Location: Long Beach, CA
Country: US
Start Date: May 11, 2003
End Date: May 15, 2003
Sponsors: Society for the Advancement of Materials and Process Engineering
Funding Number(s)
WBS: 708-31-16
Distribution Limits
Public
Copyright
Public Use Permitted.
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