Carbon nanotube paper and preparation method thereof

Abstract

The invention belongs to the technical field of carbon nano materials, and particularly to carbon nanotube paper. The carbon nanotube paper comprises carbon nanotubes and chemical fibers. The invention also relates to a preparation method of the carbon nanotube paper, and the preparation method comprises the following steps: step one, placing the carbon nanotubes in an alcohol solvent, conductingultrasonic dispersion, placing the chemical fibers in an alcohol solvent, and conducting high-speed dispersion; step two, mixing the chemical fiber dispersion liquid with the carbon nanotube dispersion liquid to obtain a uniform mixed solution; step three, placing the uniform mixed solution in a corresponding filter device, conducting filtering, and forming carbon nanotube wet paper with uniform thickness on a filter membrane; step four, placing the carbon nanotube wet paper and the filter membrane into a drying oven together, and carrying out baking; and step five, stripping dried carbon nanotube paper from the filter membrane, and carrying out roll pressing by using a roller press. The carbon nanotube paper provided by the invention is low in cost, high in purity, and convenient in transfer; and the preparation method has few preparation processes, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of carbon nanometer materials, in particular to a carbon nanotube paper and a preparation method thereof. Background technique [0002] Carbon nanotubes, also known as bucky tubes, are one-dimensional quantum materials with a special structure (the radial dimension is on the order of nanometers, the axial dimension is on the order of microns, and both ends of the tube are basically sealed). The carbon atoms arranged in hexagon form several to tens of layers of coaxial tubes. Carbon nanotubes have a very high aspect ratio structure, good electrical conductivity, excellent mechanical properties, and a large specific surface area. Carbon nanotubes can be regarded as curled graphene sheets, so they can be divided into single-walled carbon nanotubes and multi-walled carbon nanotubes according to the number of layers of graphene sheets. Commonly used carbon nanotube preparation methods mainly include: arc discha...

AI Technical Summary

Problems solved by technology

And the traditional carbon nanotube paper has a fluffy structure and poor mechanical properties

According to the above deficiencies, many methods of making carbon paper come to the fore. As described in Chinese Patent Publication No. 106396680A, carbon tubes and dispersants are mixed in a solvent, ultrasonically dispersed, and then pulp is added for high-speed shear dispersion and mixing. Use ordinary papermaking process to shape, then carry out high-temperature modification treatment on carbon paper, then carry out carbonization treatment, and finally roll forming; another example is Chinese Patent Publication No. 102877367A, also first mix carbon tubes and dispersant, stir and disperse treatment, and then add Short fiber, high-speed shear dispersion, and then use tape-casting papermaking process to form, and finally take out the dispersant after post-processing to obtain the target product; there are many processes in this way, on the one hand, it increases the cost, on the other hand, the dispersant is easy to affect the carbon nanotubes conductivity, thereby reducing the performance of carbon nanotube paper

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