Effect of polyimide interphase on impact and fatigue properties of PEEK/carbon fiber composites
Conference
·
OSTI ID:127072
- Virginia Polytechnic Institute and State Univ., Blacksburg, VA (United States); and others
There is a growing interest in carbon fiber reinforced thermoplastic composites. Aqueous suspension prepregging is a new prepregging technique which provides a method for manufacturing PEEK/carbon fiber composites. This method also allows systematic variance of the properties of the interphase region between the carbon fiber and the bulk matrix. It has been found that this interphase region has a effect on dynamic mechanical properties. Notched fatigue testing and impact testing have been used to illustrate the effect of this interphase region. Notched fatigue testing is sensitive to the strength of the fiber-matrix bond. Through these mechanical tests it has been shown that PEEK composites made with a BisP-BTDA binder have a stronger fiber-matrix bond than a reference composite made from APC-2. PEEK composites made with a LaRC TPI binder also have a stronger fiber-matrix bond than APC-2.
- OSTI ID:
- 127072
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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