| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fine carbon fiber having <=500 nm diameter and 10-15,000 aspect ratio, and further having excellent characteristics such as slidability, electroconductivity and heat conductivity in a mass-production scale. SOLUTION: This fine carbon fiber mixture produced by a gas phase method is the mixture of the fine carbon fiber having a multilayered structure made of overlapped cylindrical carbon layers, a hollow structure at the center axis, 1-500 nm outer diameter and 10-15,000 aspect ratio, with a nonfibrous carbon in a shape such as a flake shape, a granular shape and a sheet shape. The granular carbon may have a hollow structure, or may include a metal or a metallic compound in the interior. The weight ratio of the fine carbon fiber to the nonfibrous carbon is (10:90)-(95:5). |
