Method for preparing carbon nanotube film by printing method

Abstract

The invention discloses a method for a carbon nanotube film. The method comprises the steps that a dispersant is added to a carbon nanotube solution and dispersed, and then a tackifier is added therein; sufficient stirring and dispersion are carried out; and acquired printing paste is loaded into a print head ink cartridge. The printing paste is added to the print ink cartridge, and then a print head is moved along a substrate. The moving direction of the print head is parallel to the substrate. The substrate is dried under vacuum. The film prepared by the method is uniform, and a large-areafilm can be prepared.

Description

technical field [0001] The invention relates to the field of carbon nanotubes, in particular to a method for preparing carbon nanotube films by printing. Background technique [0002] Carbon nanotubes are a new type of carbon material discovered by Iijima of NEC Corporation in Japan in 1991, and can be divided into single-walled carbon nanotubes and multi-walled carbon nanotubes. The special structure of carbon nanotubes determines its special properties, such as high tensile strength and high thermal stability; with the change of the helical mode of carbon nanotubes, carbon nanotubes can exhibit metallic or semiconducting properties. Because carbon nanotubes have an ideal one-dimensional structure and excellent properties in the fields of mechanics, electricity, and heat, they have shown broad application prospects in interdisciplinary fields such as materials science, chemistry, and physics. They are widely used in scientific research and industrial applications. It has a...

AI Technical Summary

Problems solved by technology

[0005] 1. There is a large area of ​​inhomogeneity;

[0006] 2. And the carbon tube film is multi-layered, which has a bad influence on the electrical performance (transistor). Because in the process of repeated extrusion, the carbon tubes will accumulate and form multiple layers, and this process cannot guarantee that each site really even

[0007] The defect of adopting Hongsik Park or Arnold et al.'s method to prepare carbon nanotubes is that the carbon nanotubes obtained by this method is not a continuous film, but a strip shape, which is not suitable for industrialized large-area processing technology; and Arnold et al. In the method, the trench size can be as small as 70nm, which has great limitations

[0008] In addition, the disadvantages of the above method also include: the solution cannot be used repeatedly, which is relatively wasteful, and the film layer is not uniform and the quality is not high

Images