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Method of utilizing acidizing method to treat carbon nano tube to prepare carbon nano tube fiber

A technology of carbon nanotube fibers and carbon nanotubes, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, to achieve the effects of low cost, simple operation steps, good mechanical properties and electrical conductivity

Inactive Publication Date: 2016-08-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-temperature method cannot be used for carbon nanotubes because they will degrade before heating to a viscoelastic state

Method used

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  • Method of utilizing acidizing method to treat carbon nano tube to prepare carbon nano tube fiber
  • Method of utilizing acidizing method to treat carbon nano tube to prepare carbon nano tube fiber
  • Method of utilizing acidizing method to treat carbon nano tube to prepare carbon nano tube fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) First measure 10mL of nitric acid, then measure 30mL of concentrated sulfuric acid, slowly pour it into the flask filled with concentrated nitric acid, and keep stirring during the period.

[0030] (2) Weigh 0.2 g of carbon nanotubes and pour them into the flask filled with the mixed acid in the step (1), place the flask in an ultrasonic cleaner for ultrasonic oscillation for 10 minutes, and shake it continuously during this period.

[0031] (3) Transfer the round-bottomed flask in the step (2) to a magnetic stirrer in a 90° C. oil bath, connect to a cooling reflux device, and cool and reflux for 2 hours under stirring.

[0032] (4) After the oxidation treatment is finished, the solution in the step (3) is cooled to room temperature, and the solution is slowly poured into a beaker filled with distilled water, and kept stirring. Afterwards, filter with a sand core filter and use a microporous membrane with a pore size of 0.2 μm. After the mixed acid is pumped out, ri...

Embodiment 2

[0036] (1) First measure 10mL of nitric acid, then measure 30mL of concentrated sulfuric acid, slowly pour it into the flask filled with concentrated nitric acid, and keep stirring during the period.

[0037] (2) Accurately weigh 0.500 g of carbon nanotubes and pour them into the flask filled with the mixed acid in the step (1), place the flask in an ultrasonic cleaner and vibrate ultrasonically for 20 minutes, and shake it continuously during this period.

[0038] (3) Transfer the round-bottomed flask in the step (2) to a magnetic stirrer in an oil bath at 90° C., connect to a cooling reflux device, and cool and reflux for 3 hours under stirring.

[0039] (4) After the oxidation treatment is finished, the solution in the step (3) is cooled to room temperature, and the solution is slowly poured into a beaker filled with distilled water, and kept stirring. Afterwards, filter with a sand core filter and use a microporous membrane with a pore size of 0.2 μm. After the mixed acid ...

Embodiment 3

[0044] (1) First measure 5mL of nitric acid, then measure 15mL of concentrated sulfuric acid, slowly pour it into a flask filled with concentrated nitric acid, and keep stirring during this period.

[0045] (2) Accurately weigh 0.250 g of carbon nanotubes and pour them into the flask filled with the mixed acid in the step (1), place the flask in an ultrasonic cleaner and vibrate ultrasonically for 10 minutes, and shake it continuously during this period.

[0046] (3) Transfer the round-bottomed flask in the step (2) to a magnetic stirrer in an oil bath at 130° C., connect to a cooling reflux device, and cool and reflux for 2 h under stirring.

[0047] (4) After the oxidation treatment is finished, the solution in the step (3) is cooled to room temperature, and the solution is slowly poured into a beaker filled with distilled water, and kept stirring. Afterwards, filter with a sand core filter and use a microporous membrane with a pore size of 0.2 μm. After the mixed acid is pu...

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Abstract

The invention relates to a method of utilizing an acidizing method to treat a carbon nano tube to prepare carbon nano tube fiber. The method includes: dispersing the carbon nano tube in a strong acid solution, and performing ultrasonic treatment to obtain a carbon nano tube dispersion; in oil bath of 50-130 DEG C, cooling and back-flowing the carbon nano tube dispersion for 1-6 h; cooling and filtering a solution obtained through cooling and back-flowing, flushing a filter cake until pH value of filtrate is neutral, and drying to obtain the carbon nano tube fiber.

Description

technical field [0001] The invention belongs to the field of preparation of carbon nanotube fibers, in particular to a method for preparing carbon nanotube fibers by treating carbon nanotubes with an acidification method. Background technique [0002] Carbon nanotubes (CNTs) have excellent mechanical, thermal, and electromagnetic properties, and have broad application prospects in many fields, such as tissue engineering scaffolds, drug release systems, nanosensors, and supercapacitors. one of the key points. Many researchers have used CNT as a reinforcing material to combine with polymers to prepare composite nanofibers, and achieved good results. Carbon fibers used in the composites industry are conventionally prepared by spinning viscoelastic mixtures. Viscoelastic polymers are spun or prepared by direct spinning of carbon pitch heated to viscoelasticity followed by thermal carbonization. However, high temperature methods cannot be used for carbon nanotubes because they...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583C01B31/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/583Y02E60/10
Inventor 李戎吴兴乐朱惠惠菅应凯
Owner DONGHUA UNIV
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