| 摘要 |
PURPOSE:To increase the volume efficiency without yarn breakage and obtain the titled high-performance fibers, by spinning pitch into pitch fibers, winding the pitch fibers onto a cylindrical bobbin having heat resistance of a specific temperature or above, infusibilizing the wound fibers and directly carbonizing the fibers. CONSTITUTION:Tetrahydroquinoline is added to coal based pitch and the resul tant pitch is heat-treated to give a spinning pitch, which is then spun into fibers at 360 deg.C. The spun fibers are then wound around a cylindrical bobbin having >=900 deg.C heat resistance to afford pitch fibers, which are in a state wound around the bobbin are fed into an infusibilizing furnace and kept at 300 deg.C for 1hr to carry out infusibilization. The fibers in the wound state are fed into carboniza tion furnace and carbonized in N2 atmosphere while heating at >=850 deg.C to afford the aimed carbon fibers.
|
