Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1985-04-15
1989-08-08
Lorin, Hubert
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
264 24, 264 292, 264 296, 264 401, 264 65, 264 67, 264 81, 264 82, 264105, 264137, 264145, 264241, 264257, 4234473, 4234477, 423448, 423449, 423450, D01D 500, D01F 908
Patent
active
048550914
ABSTRACT:
A method of preparing carbon filaments which comprises exposing a suitable thermostable substrate which is covered with reduced monocrystalline metal particles with a diameter of at least 5 nanometers to a carbon containing gas mixture at temperatures of about 250.degree. up to about 700.degree. C. to 800.degree. C., for a period of time sufficient to form filaments of the desired length, and thereafter removing the substrate and/or the metal particles. The filaments are characterized by a crystalline graphitic structure and a morphology defined by a fishbone-like arrangement of the graphite layers along the axis of the filaments. A high carbide content is a prerequisite for the nucleation of the filamentous carbon with a fishbone like structure.
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Geus John W.
Linowski John W.
Lorin Hubert
The Dow Chemical Company
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