Preparation of isotropic pitch-based carbon fiber using hyper coal through co-carbonation with ethylene bottom oil

A spinnable pitch was developed from the tetrahydrofuran-soluble fractions (THFS) of hyper coal (HPC) and used to prepare carbon fibers. THFS-derived pitch from bituminous coal-derived HPC showed excellent spinnability and the obtained carbon fibers had a tensile strength of over 800 MPa with a diameter of 13 μm following heat treatment at 800 °C for 5 min. Thus, HPC was shown to be a useful alternative precursor for the preparation of low-cost and general-performance carbon fibers.

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