| 摘要 |
PURPOSE:To manufacture ultra-fine carbon fiber having excellent crystal orientation, in high yield and productivity, by the high-temperature reaction of a mixed gas consisting of an organic metallic compound vapor and a carrier gas. CONSTITUTION:A carrier gas is introduced through the inlet 40 to the vapor of an organic metallic compound (preferably the compound of iron, cobalt or nickel) in the evaporator 42 to obtain a mixed gas. The mixed gas is introduced through the feeding line 48 and the gas-inlet line 49 into the reaction tube 50 heated with the heater 52, and subjected to the high-temperature reaction to obtain the objective carbon fiber. The organic metallic compound is preferably the one composed solely of carbon, hydrogen and iron. The carrier gas is preferably composed of >=60% H2 gas, 3-20% gases such as He, Ar, Kr, Ne, N2, CO2, etc., and 1-6% H2S. |
