Method for efficiently dispersing carbon nano-tubes

A technology of carbon nanotubes and nanotubes, which is applied in the field of preparation of carbon nanotube dispersions, can solve the problems of easy aggregation of carbon nanotubes, low dispersion concentration, poor electrical and thermal conductivity, and other problems, so as to overcome anisotropy and improve Mechanics, Effects on Solving Agglomeration and Stacking Problems
CN108584918AActive Publication Date: 2018-09-28SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2018-09-28

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Abstract

The invention discloses a method for efficiently dispersing carbon nano-tubes. The method comprises the steps: mixing the ingredients in parts by mass: 1-30 parts of carbon nano-tubes, 0.2-10 parts offunctionalized carbon nano-tubes and 400-1,200 parts of solvent, and adjusting the pH to 5 to 9; and carrying out ultrasonic dispersion, thereby obtaining a stable-dispersed carbon nano-tube dispersion, wherein the functionalized carbon nano-tubes are one or more of carboxylated carbon nano-tubes, hydroxylated carbon nano-tubes, aminated carbon nano-tubes, acylated-chlorinated carbon nano-tubes and sulfonated carbon nano-tubes. The method disclosed by the invention has the characteristics that the carbon nano-tube dispersion effect is good, the stability is high, the dispersion concentrationis high, the carbon nano-tubes are not destroyed and sheared, the surfactant is absent, the process flow and production cycle are short, and industrial production is easy to achieve; and the obtaineddispersion can be applied to the aspects of organic-inorganic nanocomposite materials such as heat-conducting coating materials, conducting polymers and supercapacitors.
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Description

technical field

[0001] The invention relates to a preparation method of a carbon nanotube dispersion liquid, in particular to a method for dispersing a carbon nanotube in a Pickering emulsion. Background technique

[0002] The axial dimension of carbon nanotubes is generally micron-scale, while the radial dimension can reach nanoscale. Using its large aspect ratio, it can be made into carbon fibers with excellent toughness and anisotropic heat-conducting materials; carbon nanotubes are unique The hollow structure of carbon nanotubes makes it an ideal catalyst support material and hydrogen storage material. Therefore, carbon nanotube-reinforced composites have become an important field in material research.

[0003] However, due to the strong van der Waals force between carbon nanotubes, they are easily entangled or agglomerated into bundles, thus restricting the application of carbon nanotubes. In order to disperse carbon nanotubes better, some physical and chemical methods...

Claims

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