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Title:
CARBON NANOWIRE DISPERSION LIQUID AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/093360
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a carbon nanowire dispersion liquid in which carbon nanofibers having an average fiber diameter in the nano-size range have a long average fiber length compared to the narrowness of said average fiber diameter, are easy to grind and disperse within a dispersion medium, and are unlikely to reagglomerate; and a method for producing the carbon nanowire dispersion liquid. The problem is solved by a carbon nanowire dispersion liquid in which carbon nanowires having an average fiber diameter of 300 nm or less and an average aspect ratio of 30-200 are dispersed within a dispersion medium, and by a method for producing the carbon nanowire dispersion liquid in which carbon fibers are subjected to dry grinding or dry-ground carbon fibers are prepared, then said carbon fibers are ground while being dispersed in a dispersion medium by performing wet grinding within the dispersion medium. When performing the wet grinding, the dry-ground carbon fibers are incorporated into the dispersion medium, bead mill processing is performed in the presence of an anionic surfactant, and the carbon fibers thereby become carbon fibers having an average fiber diameter of 300 nm or less and an average aspect ratio of 30-200.

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Inventors:
AKIZAWA SHIGEHISA (JP)
Application Number:
PCT/JP2018/041299
Publication Date:
May 16, 2019
Filing Date:
November 07, 2018
Export Citation:
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Assignee:
ACA CO LTD (JP)
International Classes:
C01B32/15; C09D5/24; C09D7/61; C09D11/02; C09D11/52; C09D201/00; D01F9/12
Domestic Patent References:
WO2016084697A12016-06-02
Foreign References:
JP2015162262A2015-09-07
JP2013217011A2013-10-24
JP2012082077A2012-04-26
JP2009235650A2009-10-15
JP2005154200A2005-06-16
JP2017066546A2017-04-06
JP2013534897A2013-09-09
Attorney, Agent or Firm:
TAKAHASHI INTERNATIONAL PATENT OFFICE (JP)
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