| 摘要 |
PURPOSE:To perform a commercial mass-production of a high-quality carbon fiber grown in vapor phase in high yield at a low production cost by supplying a suspension containing a carbon compound, fine particles of a catalyst and a specific surfactant into a heating zone. CONSTITUTION:A suspension containing (A) a carbon compound (preferably a liquid aliphatic or aromatic hydrocarbon), (B) fine particles of a catalyst (preferably magnetite, etc., having particle diameter of 500Angstrom ) and (C) a surfactant containing an element selected from N-group element, O-group element and halogen element (preferably sulfuric acid ester salt, etc.) is prepared beforehand. The suspension is supplied to a heating zone to effect the contact of the gas of the component A with the suspending component B under heating. Carbon is deposited in the form of fiber by this heat-treatment. Preferably, the ratio of the component B in the suspension is 0.05-5wt.% based on the component A and that of the component C is 0.1-50wt.% based on the component B. |
