Preparation method of carbon nano tube film

Abstract

The invention relates to a preparation method of a carbon nano tube film, which comprises the following steps: providing a carbon nano tube array, wherein the carbon nano tube array grows on the surface of a substrate and comprises a plurality of carbon nano tubes; providing a stretching tool, wherein the stretching tool comprises a viscous bonding surface which is provided with a straight edge; moving the straight edge of the bonding surface of the stretching tool to be close to the substrate to bond the bonding surface with the carbon nano tube array; and moving the stretching tool in a direction away from the growing substrate at a certain speed to obtain a continuous carbon nano tube film by pulling the carbon nano tube array from the part thereof bonded with the straight side of the bonding surface of the stretching tool. By using the preparation method, one continuous carbon nano tube film can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a carbon nanotube film. Background technique [0002] Carbon nanotubes are a new type of one-dimensional nanomaterials discovered in the early 1990s, see "Helical microtubules of graphitic carbon", Sumio Iijima, Nature, vol.354, p56 (1991). 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. has also received increasing attention. [0003] Although carbon nanotubes ha...

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Problems solved by technology

However, the stretching method is to use adhesive tape to contact the carbon nanotube array 12 and stretch it, but it is not easy to form a flat contact surface between the adhesive tape and the carbon nanotube array 12, so that the contact between the adhesive tape and the carbon nanotube is not firm, and , it cannot be ensured that the carbon nanotubes in contact with the contact surface can be separated from the substrate at the same time during the stretching process, so that discontinuous points 16 appear in the carbon nanotube array 12, and then the obtained carbon nanotube film 14 has uneven thickness or gaps, etc. discontinuity

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