| US 7,510,762 B1 | ||
| Oriented graphite film, methods of manufacture thereof and articles comprising the same | ||
| Kuniaki Sueoka, Kanagawa-ken (Japan); and Yoichi Taira, Tokyo (Japan) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Jun. 05, 2008, as Appl. No. 12/133,719. | ||
| Application 12/133719 is a continuation of application No. 11/945523, filed on Nov. 27, 2007, granted, now 7,396,494. | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. D04H 1/00 (2006.01); B32B 15/04 (2006.01); D02G 3/00 (2006.01) | ||
| U.S. Cl. 428—292.1 [428/86; 428/90; 428/96; 428/97; 428/293.1; 428/297.4; 428/399; 428/400; 428/408; 428/902; 252/378 R; 252/500; 252/502; 252/510; 252/511; 423/447.1; 423/447.2; 423/447.3; 361/704; 361/709; 524/492; 524/493; 524/494; 524/495; 524/496] | 2 Claims |
| 1. A composite film comprising:
a layer of an organic polymer, wherein the organic polymer is an elastomer; the organic polymer having an elastic modulus
of less than or equal to about 105 Pascals when measured at room temperature; and
a bundle of carbon fibers disposed in the layer of organic polymer; each bundle comprising a column and an end face; each
bundle also having a longitudinal axis that is substantially parallel to the column and passes through the center of the column;
the end face of the carbon fiber bundle intercalated with nitrate ions and fibrillated so as to have a surface area measured
perpendicular to the longitudinal axis that is about 110% to about 250% greater than the surface area of a cross-section of
the carbon fiber bundle measured at the column.
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