High-concentration carbon nanotube slurry and preparation method thereof

A carbon nanotube, high-concentration technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as poor stability of carbon nanotube slurry

Pending Publication Date: 2021-04-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems in the prior art, the present invention provides a high-concentration carbon nanotube slurry and its preparation method, which solves the technical problem of poor stability of the carbon nanotube slurry in the water environment, an

Method used

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  • High-concentration carbon nanotube slurry and preparation method thereof

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[0022] The invention provides a kind of preparation method of high-concentration carbon nanotube slurry, comprising the following steps:

[0023] 1) Mix carbon nanotube powder and ionic liquid crystal with a mass ratio of (1:1) to (5:1) and add them into deionized water, stir and mix well to obtain a mixed solution; preferably, the particle size of the carbon nanotube powder 2-5nm; ionic liquid crystals include imidazole ionic liquid crystals; further preferably, ionic liquid crystals include 1-hexadecyl-3-methylimidazole bromide, 1-hexadecyl-3-methylimidazolium tetrafluoroboron salt, 1-hexadecyl-3-methylimidazole hexafluorophosphate, 1-dodecyl-3-methylimidazole chloride and 1-dodecyl-3-methylimidazole bromide One or more of them; the concentration of ionic liquid crystal is 2.5-20mg / mL; the amount of deionized water is 10-30ml, and the mass ratio of deionized water to carbon nanotube powder is (10:1)~(30:1 );

[0024] 2) Put the mixed solution in a reaction kettle, and cond...

Embodiment 1

[0029] (1) Weigh 1-hexadecyl-3-methylimidazole bromide and carbon nanotube powder with a mass ratio of 1:2 and add them into 30ml deionized water, stir vigorously until fully dissolved in deionized water, and obtain Mixed solution of carbon nanotube powder and ionic liquid crystal;

[0030] (2) Add the homogeneously mixed mixed solution into a polytetrafluoroethylene-lined reaction kettle, and perform a high-temperature hydrothermal reaction at 180° C. for 12 hours;

[0031] (3) Pour out the product after the hydrothermal reaction to obtain a high-concentration carbon nanotube slurry.

Embodiment 2

[0033] (1) Weigh 1-hexadecyl-3-methylimidazolium tetrafluoroborate and carbon nanotube powder with a mass ratio of 1:3 and add them to 30mL deionized water, stir vigorously until fully dissolved in deionized water, Obtain a mixed solution for carbon nanotube powder and ionic liquid crystal;

[0034] (2) Add the homogeneously mixed mixed solution into a polytetrafluoroethylene-lined reaction kettle, and perform a high-temperature hydrothermal reaction at 180° C. for 15 hours;

[0035] (3) Pour out the product after the hydrothermal reaction to obtain a high-concentration carbon nanotube slurry.

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Abstract

The invention discloses a high-concentration carbon nanotube slurry and a preparation method thereof, and solves the technical problem of poor stability of the carbon nanotube slurry in a water environment, the preparation method comprises the following steps: 1) mixing carbon nanotube powder and ionic liquid crystal in a mass ratio of (1: 1)-(5: 1), adding the mixture into deionized water, and fully stirring and uniformly mixing to obtain a mixed solution; 2) putting the mixed solution into a reaction kettle, and carrying out hydrothermal reaction at 150-250 DEG C; 3) taking out a product after the hydrothermal reaction to obtain high-concentration carbon nanotube slurry; the prepared high-concentration carbon nanotube slurry is high in concentration and good in dispersity, can be stably stored for more than 6 months for a long time under the condition of normal temperature, and has relatively high application value.

Description

technical field [0001] The invention relates to the technical field of carbon nanotube slurry preparation, in particular to a high-concentration carbon nanotube slurry and a preparation method thereof. Background technique [0002] Carbon nanotubes are seamless concentric nanoscale tube structures formed by curling graphite sheets, and hemispherical large fullerene molecules formed by five-membered rings and seven-membered rings seal both ends, in which carbon is sp 2 bonded by hybridization. According to the number of layers of graphite sheets in the tube, it can be divided into single-walled carbon nanotubes and multi-walled carbon nanotubes. The extremely high aspect ratio and super strong mechanical properties make carbon nanotubes a one-dimensional nanomaterial with high application potential. Its applications have involved nanoelectronic devices, catalyst supports, electrochemical materials, hydrogen storage materials and composite material enhancements. In many ways...

Claims

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Application Information

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IPC IPC(8): C01B32/174
CPCC01B32/174
Inventor 宋浩杰兰梦田瑞贾晓华杨进李永王思哲
Owner SHAANXI UNIV OF SCI & TECH
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