Processes for preparing milled graphite fibers

Details Processes for preparing milled graphite fibers Processes for preparing milled graphite fibers

1995-09-28

1998-10-20

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264 296, 264 297, 264234, D01F 9155

Patent

active

058242457

ABSTRACT:
Disclosed is a process for preparing milled graphite fibers in which the amount of metallic components contained in the milled carbon fibers before graphitizing is limited to not more than 100/1,000,000 in terms of a ratio by weight. Also disclosed is a process for preparing milled graphite fibers in which the amount of metallic components contained in the milled carbon fibers before graphitizing except metallic components originally contained in the fibers themselves is limited to not more than 50/1,000,000 in terms of a ratio by weight. According to these processes, there can be obtained milled graphite fibers whose surfaces are inert, which suffer few longitudinal crackings and which are almost free from occurrence of particulate substances comprising agglomerated or bonded fibers.

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Patent Abstracts of Japan, vol. 18, No. 12 (C-1150), Jan. 11, 1994, JP-247729, Sep. 24, 1993.
Proceedings of the Symposium on High Power, Ambient Temperature Lithium Batteries, vol. 92, No. 15, Oct. 13, 1991, pp. 80-89, N. Imanishi, et al., "The Structure and Charge-Discharge Characteristics of Mesophase-Pitch Based Carbons".
Journal of the Electrochemical Society, vol. 140, No. 2. pp. 315-320, Feb., 1993, N. Imanishi, et al., "Charge-Discharge Characteristics of Mesophase-Pitch-Based Carbon Fibers for Lithium Cells".
Patent Abstracts of Japan, JP-A-5 247729, Sep. 24, 1993.

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