Carbon nanofiber aggregate, the production method of carbon nanofibers and method of producing a carbon fiber composite material

摘要

PPROBLEM TO BE SOLVED: To provide a carbon nanofiber, a carbon nanofiber assembly, a method for producing the carbon nanofiber, a method for producing a carbon fiber composite material, and the carbon fiber composite material. PSOLUTION: The method for producing the carbon fiber composite material incldes a first step and a second step. The first step produces a plurality of carbon nanofibers 80 by compressing a plurality of the first carbon nanofibers 60 produced by a vapor growth method. The second step produces the carbon fiber composite material by mixing the carbon nanofibers 80 with an elastomer and uniformly dispersing the carbon nanofibers in the elastomer with a shearing force. The multiple first carbon nanofibers 60 contains the first carbon nanofibers 60 having branched part. The compression treatment cuts the first carbon nanofibers 60 at the branched point. PCOPYRIGHT: (C)2011,JPO&INPIT