B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
252/40, 18/6, 40
B32B 9/00 (2006.01) B01J 27/20 (2006.01) B01J 35/06 (2006.01) C04B 14/38 (2006.01) C04B 35/622 (2006.01) C08K 7/06 (2006.01) D01F 9/127 (2006.01) D01F 11/12 (2006.01) F16D 69/02 (2006.01) H01B 1/02 (2006.01) H01B 1/04 (2006.01) H01B 1/16 (2006.01) H01B 1/18 (2006.01) H01B 1/24 (2006.01)
Patent
CA 1321863
NOVEL CARBON FIBRILS, METHOD FOR PRODUCING SAME, AND COMPOSITION CONTAINING SAME AABSTRACT OF THE DISCLOSURE This invention concerns a discrete carbon fibril char- acterized by a substantially constant diameter between about 3.5 and about 70 nanometers, length greater than about 5 times the diameter and less than about 100 times the diameter, an outer region of multiple essen- tially continuous layers of ordered carbon atoms and a distinct inner core region. The invention further con- cerns a plurality of such fibrils. The fibrils of this invention may be produced by con- tacting for an appropriate period of time and at a suitable pressure a suitable metal-containing particle with a suitable gaseous, carbon-containing compound, at a temperature between about 850°C and 1200°C. or by treating discrete carbon fibrils, characterized by a length greater than about 100 times the diameter. Carbon fibrils may also be continuously produced by continuously contacting for an appropriate period of time at suitable conditions. Another aspect of the invention concerns a composition of matter comprising a carbon fiber or a carbon plate and a plurality of fibrils. Carbon fibrils and compositions of matter comprising carbon fibrils are useful in composites having a matrix of e.g., an organic polymer, an inorganic polymer or a metal. In specific embodiments, the fibrils or the compositions of matter may be used to reinforce a structural material, to enhance the electrical or thermal conductivity of a material, to increase the surface area of an electrode or capacitor plate, to provide a support for a catalyst, or to shield an object from electromagnetic radiation.
538804
Barber James J.
Hoch Robert
Tennent Howard G.
Gowling Lafleur Henderson Llp
Hyperion Catalysis International Inc.
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