Manufacturing Industry
Engineered pitch-based carbon fibers provide higher modulus.
Advanced Materials & Processes, January, 2001
A scalable technology that enables mass production of high-performance carbon fibers from lower-cost feedstocks derived from petroleum or coal tar has reportedly been developed at Conoco, Houston, Texas. Said to be twelve years in the making, both a materials and process technology have been designed to custom-engineer pitch carbon fiber at relatively low cost and in large quantities.
Rayon and PAN (polyacrylonitrile)-based carbon fibers are produced with higher-cost chemical intermediaries such as polymers. Isotropic pitch fibers are based on lower-cost petroleum or coal tar, but up to now have not been able to deliver high performance. However, Conoco's process is said to change the petroleum feedstock into "mesophase" pitch, a liquid crystal form that is...
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