The invention relates to a method for preparing carbon nanotube dispersions, including the following steps: mixing a dispersion solution containing solvent and dispersant with carbon nanotubes to prepare carbon nanotube paste (S1); extruding the paste to obtain solid carbon nanotubes (S2); adding a second solvent into the solid carbon nanotubes and performing homogenization treatment (S3), wherein the weight ratio of dispersion solution to carbon nanotubes is 1:1 to 9:1. The method improves mixing uniformity of dispersant and carbon nanotubes and realizes wet particle size control, so as to obtain high-concentration carbon nanotube dispersions with low viscosity and excellent electrical resistance performance.
Area Code: KR
Application Number: CN201980003603.8
