HIGH-DISPERSION CARBON NANOTUBE COMPOSITE CONDUCTIVE INK

摘要

A high-dispersion carbon nanotube composite conductive ink, consisting of modified carbon nanotubes, conductive polymeric material, and solvent; said modified carbon nanotubes being obtained from conventional carbon nanotubes that have been irradiated on a UV bench and then oxidized by a strong acid. Carbon nanotubes obtained via this process do not require, when preparing conductive composite ink, the addition of a surfactant to increase the dispersibility of the ink, such that the conductive layer obtained therefrom has good conductive properties, optical transmittance within the visible light range, and flexibility. The conductive properties of this flexible carbon nanotube polymeric transparent conductive film are world class, and the invention has good prospects for application.

主权项

1. A high-dispersion carbon nanotube composite conductive ink, comprising the following components (with the weight percentages):1) Modified carbon nanotube 0.03-1%,2) The conductive polymeric material0.2%-5%3) Conductive polymer cosolvent0.2%-1%4) Solvent 94%-98% The modified carbon nanotube is prepared by the following method: (1) disperse carbon nanotubes in a low-boiling alcohol or an aqueous solution by the ultrasonic wave or cells crusher, and then place the dispersion liquid in a UV machine for irradiation 30-60 min, centrifuge; (2) have an oxidation reaction of carbon nanotubes washed by UV machine with oxidizing strong acid solution, and centrifuge; (3) After ultrasonic dispersion of carbon nanotubes washed by strong acid through low-boiling alcohol solvent or water, the high-dispersion modified carbon nanotubes are obtained.