Preparation method of highly-oriented carbon nanotube paper

Abstract

The invention relates to a preparation method of a piece of highly-oriented carbon nanotube paper. The preparation method comprises the following steps: sticking and wrapping a carbon nanotube film onto a winding roller, then winding the carbon nanotube film, simultaneously, spraying a volatile solvent onto the winding roller, and then preparing the carbon nanotube paper with controllable orientation after the volatile solvent is fully volatilized. The preparation method is simple and efficient in process, avoids the damage of the structure and the morphology of a carbon nanotube and can achieve the carbon nanotube paper with controllable thickness, size and internal structure by changing equipment parameters; and the prepared carbon nanotube paper can be widely applied to batteries and filtering materials and further has a good application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of carbon nanotube paper, in particular to a preparation method of carbon nanotube paper with high degree of orientation. Background technique [0002] Carbon nanotube (CNT) was discovered by Iijima, a Japanese electron microscope expert, in 1991. It is another new member of the carbon family after C60. Due to their excellent physical and chemical properties, carbon nanotubes have good application prospects in fields such as field emission, batteries and supercapacitors, sensors, and high-performance composite materials. So far, the macrostructures assembled by it include carbon nanotube ribbons, fibers, films, and carbon nanotube paper (also known as Buckypaper, Bucky paper). Carbon nanotube paper is a paper-like thin layer of carbon nanotubes composed of intertwined carbon nanotubes through the Van der Waals force between the tubes. Whether used as a functional material or a reinforcing material, ca...

AI Technical Summary

Problems solved by technology

The carbon tubes in the bucky paper formed by this method can only be highly oriented in one direction, which does not bring significant improvement in mechanical properties, and the size of the bucky paper is limited by the size of the carbon nanotube array

Although the chemical vapor deposition method can obtain carbon nanotube paper with a certain degree of orientation, the preparation process of the method is complicated and requires high equipment requirements.

To sum up, the traditional carbon nanotube bucky paper is mostly a disordered carbon nanotube network structure, which greatly weakens the mechanical properties and electrical conductivity of the bucky paper, which seriously limits the application of carbon nanotube paper.

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