| 摘要 |
PROBLEM TO BE SOLVED: To obtain a carbon nanofiber sheet whose absorption characteristics alone can be evaluated as an electromagnetic wave absorber. SOLUTION: The electromagnetic wave absorber uses the carbon nanofiber sheet formed by charged spinning. Although any of polyacrylonitrile-based, pitch-based, cellulose-based, and phenyl-based active carbon fibers can be used for an active carbon fiber precursor used as a base material, it is preferable that a material based upon the same raw material is used to obtain sheet characteristics of a nanofiber sheet obtained by carbonization and activation similar to those of a nanofiber sheet formed by charged spinning. COPYRIGHT: (C)2008,JPO&INPIT
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