METHOD FOR PREPARING CARBON NANOTUBE DISPERSION SOLUTION

Title:

METHOD FOR PREPARING CARBON NANOTUBE DISPERSION SOLUTION

Document Type and Number:

WIPO Patent Application WO/2019/146982

Kind Code:

A1

Abstract:

The present invention relates to a method for preparing a carbon nanotube dispersion solution, comprising the steps of: (S1) preparing a carbon nanotube paste by mixing carbon nanotubes in a dispersion solution comprising a dispersion solvent and a dispersant; (S2) obtaining a carbon nanotube solid by extruding the paste; and (S3) injecting a second solvent into the carbon nanotube solid, and then homogenizing the carbon nanotubes, wherein the weight ratio of the dispersion solution and the carbon nanotubes is 1:1 to 9:1. Therefore, the miscibility of a dispersant and carbon nanotubes can be improved and particle size can be controlled in a wet manner, and thus a carbon nanotube dispersion solution having a viscosity controlled in a low level, excellent resistance characteristics and a high concentration can be provided.

Inventors:

KANG KYUNG YEON (KR)
LEE SEUNG YONG (KR)
KIM SEOK WON (KR)
KANG HYUN JOON (KR)

Application Number:

PCT/KR2019/000855

Publication Date:

August 01, 2019

Filing Date:

January 21, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C01B32/174

Foreign References:

KR20120075706A	2012-07-09
KR20170087226A	2017-07-28
KR20160133711A	2016-11-23
JP2017112319A	2017-06-22
KR20160110401A	2016-09-21
JP2015115670A	2015-06-22

Other References: