| abstract |
The present invention relates to a method for producing a spinnable pitch from low-grade coal or ash freecol, and to a method for application to low-cost, high-strength isotropic carbon fiber, and more particularly, to a residue generated in the pyrolysis process of low-grade coal, or not The present invention relates to a method for producing inexpensive and high-quality isotropic pitch-based carbon fibers using a co-carbonization method, a 2nd phase heat treatment method, or a bromination method from the ash freecoll produced from low-grade coal itself. |