再分散用微細炭素繊維集合塊およびその製造方法

Japanese Patent JP5301793

B2

The disclosed is a redispersible agglomerate of fine carbon fibers, which is obtained by adding the fine carbon fibers and a dispersing agent which shows solid state at least at ordinary temperature (20 ± 10 °C) into an aqueous dispersion medium, and then removing the dispersion medium from a dispersion system where the carbon fibers are isolated individually and dispersed in the dispersion medium; and in which the carbon fibers are got together and solidified in the agglomerate while each carbon fiber maintains its isolated dispersibility; wherein the carbon content is in the range of 0.01 - 99.5 % by weight, the dispersing agent content is in the range of 0.1-99.5 % by weight, and the moisture content is in the range of less than 10 % by weight, based on the total weight of the agglomerate; and wherein the dispersing agent is one member selected from the group consisting of (1) surfactants capable of forming spheroidal, cylindrical, or tabular micelles of 5-2000 nm in diameter in an aqueous solution; (2) water-soluble high polymers having a weight average molecular weight in the range of 10,000 - 50,000,000; and (3) a combination of cyclodextrin and fullerene. This redispersible agglomerate of fine carbon fibers has a good handling property and would form a dispersed state of individually isolated carbon fibers when it is added in any of various dispersion media.

Fumi Kozuki

JP2007122830A

September 25, 2013

May 07, 2007

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National University Corporation Hokkaido University
Mitsui & Co., Ltd.

D01F9/127; C01B31/02; C09K23/00; C09K23/14; C09K23/16; C09K23/18; C09K23/22; C09K23/52

JP2005530667A
JP2005502792A
JP2004238261A
JP2007039623A
JP2007182363A
JP2006183227A
JP2006265751A

Yasuo Ishikawa

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