Method for performing functionalization treatment to surface of multi-walled carbon nanotube by utilizing hydrogen peroxide
A technology of multi-walled carbon nanotubes and surface functionalization, applied in chemical instruments and methods, carbon compounds, nanotechnology, etc., to achieve the effect of easy production and application, simple process and simple operation process
Inactive Publication Date: 2012-07-11
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF5 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This method has not yet been reported
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment
[0017] (1) heating commercially available multi-walled carbon nanotubes (diameter 20-40nm) to 180°C and keeping the temperature for 5 hours to remove some impurities and moisture;
[0018] (2) preparation mass percentage concentration is 300ml of hydrogen peroxide solution of 6%, adds the multi-walled carbon nanotube after 1g step (1) process, handles 30 minutes with laboratory dispersing emulsification machine; Dry in 75 ℃ drying box, Remove the hydrogen peroxide remaining in the multi-walled carbon nanotubes while evaporating the hydrogen peroxide solution, and finally obtain the treated hydrophilic multi-walled carbon nanotubes;
[0019] (3) Add 100 mg of multi-walled carbon nanotubes treated in step (2) into 20 ml of ethanol, and ultrasonically vibrate for 2 minutes to obtain a highly stable multi-walled carbon nanotube dispersion.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for performing functionalization treatment to the surface of a multi-walled carbon nanotube by utilizing hydrogen peroxide. The method comprises the following steps of: immersing the multi-walled carbon nanotube into hydrogen peroxide solution, adopting a high-shearing dispersing emulsion machine to produce powerful shearing, material collision and centrifugal extrusion through a rotor rotating at high speed and a precise stator working cavity, strengthening interaction of hydrogen peroxide and the multi-walled carbon nanotube to form a hydroxide radical or a carboxyl and other hydrophilic groups on the surface of the multi-walled carbon nanotube, so that the multi-walled carbon nanotube can be dissolved into ethanol. For the method, strong oxidizers such as nitric acid or additives such as a surface active agent are not needed, hydrophilic functionalization treatment to the surface of the multi-walled carbon nanotube can be realized; the process is simple, environment-friendly, and has low cost; moreover, the effect of using the surface active agent or other hydrophilic macromolecule decoration on the compounding of the carbon nanotube and a resin matrix is avoided, so that the method creates a condition for wide application of the carbon nanotube.
Description
technical field [0001] The invention relates to a method for functionalizing the surface of multi-walled carbon nanotubes by using hydrogen peroxide. Background technique [0002] Carbon nanotubes have excellent mechanical, electrical and thermal properties, and are ideal reinforcing agents for the preparation of composite materials. However, due to the chemical inertness and lack of active groups on the surface of carbon nanotubes, the solubility in various solvents is very low; in addition, due to the large aspect ratio and high specific surface area of carbon nanotubes, they are very easy to agglomerate under the action of van der Waals force And entanglement, it is difficult to disperse carbon nanotubes in various solvents, which limits their application in many fields. [0003] The solubility of carbon nanotubes in various solvents depends on the surface characteristics of carbon nanotubes, so the surface treatment method of carbon nanotubes becomes the key to restri...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y40/00C01B32/168
Inventor 罗鲲张鹏飞
Owner GUILIN UNIVERSITY OF TECHNOLOGY