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Preparation method of functionalized carbon nanotube powder

A carbon nanotube and functionalization technology, which is applied in the field of carbon nanotube powder preparation, can solve the problem of weak binding force between products and composite materials, high risk of functionalized carbon nanotube reaction, difficult to control, and grafting of surface functionalized groups The efficiency is difficult to control and other problems, and the preparation process is simple and easy, the interface binding force is strong, and the external conditions are low.

Inactive Publication Date: 2016-07-06
HEILONGJIANG HEIKE TECH CO LTD
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  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problems of high risk of reaction, difficulty in controlling the grafting rate of surface functional groups, and weak binding force between products and composite materials in the preparation of functionalized carbon nanotubes by the existing method, and provides a functionalized carbon nanotube Tube powder preparation method

Method used

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  • Preparation method of functionalized carbon nanotube powder
  • Preparation method of functionalized carbon nanotube powder
  • Preparation method of functionalized carbon nanotube powder

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specific Embodiment approach 1

[0036] Specific embodiment one: the preparation method of the functionalized carbon nanotube powder of this embodiment is carried out according to the following steps:

[0037] 1. Place the carbon nanotubes in a tube furnace, heat them at 350-500°C for 1-1.5 hours under a protective atmosphere, and cool down to room temperature after treatment to obtain purified carbon nanotubes;

[0038] 2. With deionized water as solvent, FeSO 4 ·7H 2 O was the solute, and FeSO was prepared by ultrasonic oscillation method 4 solution, and then adjust the pH of the solution;

[0039] 3. Place the carbon nanotubes purified in step 1 in FeSO 4 solution, ultrasonically oscillated to form a stable suspension of carbon nanotubes, and then in a constant temperature oil bath at 15°C, H 2 o 2 Add dropwise into the suspension of carbon nanotubes, carry out mechanical stirring reaction under the irradiation of ultraviolet lamp, stand still after the reaction, and obtain the product;

[0040] 4. W...

specific Embodiment approach 2

[0046] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the carbon nanotubes described in step 1 are multi-walled carbon nanotubes, and the diameter specifications are 10-20, 20-40 or 40-60 . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0047] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the protective atmosphere in step 1 is a nitrogen atmosphere. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of functionalized carbon nanotube powder, relating to a preparation method of carbon nanotube powder. The purpose of the method is to solve the problems that the existing method for preparing functionalized carbon nanotubes has a high risk of reaction and is difficult to control, the grafting rate of surface functional groups is difficult to control, and the combination of the product and the composite material is weak. Method: 1. Heat the carbon nanotubes in a tube furnace and cool down to obtain purified carbon nanotubes; 2. Prepare FeSO 4 Solution, adjust the pH; 3. Place the purified carbon nanotubes in FeSO 4 solution, forming a suspension, oil bath, H 2 o 2 Adding to the suspension, standing still after the reaction, to obtain the product; 4. Washing, replacing with an organic solvent, centrifuging to obtain a muddy product, and freeze-drying to obtain the functionalized carbon nanotube powder. The reaction of the method is controllable, and the prepared powder can be dispersed in some organic solvents to form a uniform and stable system, and has a certain orientation ability under a specific field strength. The invention is used for preparing functionalized carbon nanotubes.

Description

technical field [0001] The invention relates to a preparation method of carbon nanotube powder. Background technique [0002] Carbon nanotubes have extremely high strength, toughness and modulus of elasticity, large aspect ratio and specific surface area, and excellent thermal conductivity, and are nanofillers with great application potential. Carbon nanotubes have a typical layered hollow structure. The tube body is a quasi-round tube structure, mostly composed of pentagonal cross-sections, and there is a certain angle between the layers. Studies have shown that: according to the different helical angles and diameters of carbon nanotubes, about 1 / 3 of the structure is metallic and capable of conducting electricity, while 2 / 3 is a semiconductor. Due to the excellent performance of carbon nanotubes, they have broad application prospects in structural materials and functional materials, but the insolubility caused by the structure of carbon nanotubes, as well as practical pro...

Claims

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Application Information

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IPC IPC(8): C09C1/44C09C3/04C09C3/06C09C3/08
CPCC09C1/44C09C3/043C09C3/06C09C3/08
Inventor 马宇良苏桂明姜海健方雪陈明月崔向红刘晓东宋美慧
Owner HEILONGJIANG HEIKE TECH CO LTD
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