Abstract
A one-step preparation of carbon-fiber-carbon-matrix composites has been developed, using a new aromatic diacetylene oligomer as a precursor for the matrix. The oligomer gives 95% carbon yield at 650°C, which permits a major simplification in the current method used for fabrication of carbon-carbon composites. The one-step process includes conventional hot pressing in an inert atmosphere. The carbon composite samples demonstrated good mechanical properties. Scanning electron microscopy showed good wetting of the fibers by the carbon matrix at fracture surfaces.
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