| 摘要 |
An improved process is provided for producing a pyrolyzed carbonaceous filamentary material. The process utilizes a novel precursor of relatively high carbon content comprising a homogeneous blend of polystyrene and a substantial proportion of inexpensive pitch. Following melt spinning the resulting filamentary material is hot drawn, thermally stabilized, and carbonized. The thermal stabilization step of the process comprises the sulfonation of the previously hot drawn filamentary material. The thermally stabilized filamentary material optionally may be carbonized and graphitized. Processing difficulties commonly associated with a pitch precursor are effectively overcome.
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