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- Title
Inorganic Polymer Matrix Composite Strength Related to Interface Condition.
- Authors
Radford, Donald W.; Grabher, Andrew; Bridge, John
- Abstract
Resin transfer molding of an inorganic polymer binder was successfully demonstrated in the preparation of ceramic fiber reinforced engine exhaust valves. Unfortunately, in the preliminary processing trials, the resulting composite valves were too brittle for in-engine evaluation. To address this limited toughness, the effectiveness of a modified fiber-matrix interface is investigated through the use of carbon as a model material fiber coating. After sequential heat treatments composites molded from uncoated and carbon-coated fibers are compared using room temperature 3-point bend testing. Carbon-coated Nextel fiber reinforced geopolymer composites demonstrated a 50% improvement in strength, versus that of the uncoated fiber reinforced composites, after the 250 °C postcure.
- Subjects
POLYMERS; CERAMIC fibers; VALVES; ENGINE valve manufacturing; MANUFACTURING processes; POLYIMIDES; POLYCONDENSATION; COMPOSITE materials; HEATING equipment
- Publication
Materials (1996-1944), 2009, Vol 2, Issue 4, p2216
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma2042216