Mesophase pitch and its carbon fibers

Abstract

Mesophase pitch-based carbon fiber is expected to exhibit high tensile properties due to its high oriented molecular structure and high crystallinity of graphite. They can be prepared at a low-cost because of their cheapraw materials and high carbon yield. Mesophase pitch carbon fibers have a wide variety of internal structures, such as radial, random, onionskin and their intermediates. The internal structure is determined by the shear conditions in the spinneret and the dimensions of the die. To obtain proper structures and, as the result, high tensile properties, it is most important to control the spinning process since molecular orientation of mesophase pitch is determined almost exclusively in this process. © 1985 IUPAC