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Carbon nano tube dispersion liquid and preparation method thereof

A carbon nanotube and dispersion technology, which is applied in the field of carbon nanotube dispersion and its preparation, can solve problems such as the difficulty of large-scale mass production of carbon nanotube dispersion, achieve suitable mass production, improve battery performance, and reduce dispersion costs Effect

Active Publication Date: 2014-04-02
SHENZHEN SSZK NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing carbon nanotube dispersion is difficult to mass-produce on a large scale, the present invention provides a carbon nanotube dispersion with low cost, high efficiency, friendliness and more suitable for mass production and its preparation method

Method used

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  • Carbon nano tube dispersion liquid and preparation method thereof
  • Carbon nano tube dispersion liquid and preparation method thereof
  • Carbon nano tube dispersion liquid and preparation method thereof

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preparation example Construction

[0021] The invention also provides a method for preparing a carbon nanotube dispersion, the steps of which include: dispersing carbon nanotubes, high-conductivity carbon black and a dispersant in a solvent, and grinding to obtain a carbon nanotube dispersion.

[0022] Wherein, the sequence of adding carbon nanotubes, high-conductivity carbon black and dispersant to the solvent can be added in the manner of solvent, carbon nanotubes, dispersant and high-conductivity carbon black in the present invention, and can also be adjusted according to actual conditions.

[0023] Preferably, the grinding temperature is 20° C. to 60° C., so as to further improve the performance of the carbon nanotube dispersion and avoid re-agglomeration of the dispersed carbon nanotubes caused by high temperature.

[0024] Preferably, the steps include: S1. In an environment with a humidity lower than 30% R.Hs, put part of the solvent N-methylpyrrolidone into a basket sand mill, then add carbon nanotubes, ...

Embodiment 1-4

[0040] (1): In a dehumidified environment at room temperature (humidity lower than 30% R.Hs), pour the solvent N-methylpyrrolidone into the basket sand mill, and reserve enough solvent for dissolving the dispersant polyvinylpyrrolidone . Slowly pour the dispersant polyvinylpyrrolidone into the reserved solvent and keep stirring at a low speed to form a solution. After standing still, the dispersant solution becomes clear and slightly light yellow.

[0041] (2): Turn on the cooling circulating water at 20°C, so that the slurry temperature is between 20°C and 60°C during the sanding process, pour the carbon nanotubes into the solvent in the basket sand mill, and stir at a low frequency of 10Hz Accelerate the wetting of carbon nanotubes for 5-10 minutes, then lift the sanding basket to scrape the edge, then lower the sanding basket, and perform sanding at 35Hz for 0.5-1h.

[0042] (3): Pour the prepared dispersant solution into the basket sand mill, and perform sand milling at 3...

Embodiment 1

[0047]

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Abstract

The invention provides a carbon nano tube dispersion liquid and a preparation method of the carbon nano tube dispersion liquid. The carbon nano tube dispersion liquid comprises a carbon nano tube, a high conductivity carbon black, a dispersion agent and a solvent. The carbon nano tube dispersion liquid is uniform and stable, and also excellent in consistency, mobility, dispersion and glossiness, the high conductivity carbon black is in the dispersion liquid to further improve the performance of the carbon nano tube dispersion liquid, so that the application of the carbon nano tube dispersion liquid is more extensive. The carbon nano tube dispersion liquid can be dispersed only through being grinded by a regular grinding machine, the preparation of the carbon nano tube dispersion liquid is simpler and more practical, the dispersion is completed only through the cheap grinding machine in the preparation method, in addition, the yield is high, the safety performance is excellent, the operation is simple, the dispersion efficiency is high, the dispersion cost is greatly lowered, the production quality is improved, and the carbon nano tube dispersion liquid is more suitable for batch production as well as large-scale production and application.

Description

technical field [0001] The invention belongs to the field of carbon nanotube materials, in particular to a carbon nanotube dispersion and a preparation method thereof. Background technique [0002] At present, most of the dispersion technology of carbon nanotubes is limited to the laboratory, and the dispersion method of adding dispersant and ultrasonic is generally used, which is limited by production efficiency, safety and other issues, and cannot be applied to mass production, and it is difficult to promote and apply in industrial mass production . [0003] With the continuous improvement of the application of carbon nanotubes in the field of electrical conductivity and heat conduction, the market demand for carbon nanotubes is also gradually increasing. It is waiting to develop a low-cost, high-efficiency, more friendly, and more suitable for mass production of carbon nanotubes Dispersions. Contents of the invention [0004] In order to solve the technical problem th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01B1/24
CPCH01B1/24H01M4/625H01M10/0525Y02E60/10
Inventor 谢书云谢洪超胡德华彭磊张伟
Owner SHENZHEN SSZK NEW MATERIALS CO LTD
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