Degradation and Failure Modes of Carbon/Bismaleimide Laminates Subjected to a Tropical Exposure
ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS
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A scanning electron microscope SEM was used to characterize the degradation of the outermost layers of carbonbismaleimide laminates as the result of exposure to a natural tropical environment. The surface that was exposed to the sun for 4000 hours suffered complete degradation of the bismaleimide matrix to a shallow depth. SEM fractography showed little difference in the appearance of the fibers in a carbonbismaleimide laminate, which displayed considerable fiber pullout compared to fibers in a carbonepoxy laminate, which displayed little pullout.
- Organic Chemistry
- Laminates and Composite Materials