Multiwall carbon nanotube-polysilane composite material and preparation method thereof

A technology of multi-walled carbon nanotubes and composite materials, applied in the field of carbon nanotube-polysilane composite materials and their preparation, can solve the problems of large specific surface energy of carbon nanotubes, poor dispersibility, weak organic binding ability and the like, and achieve electrical conductivity. The effect of improving the rate, easy film formation, and improving the binding ability

Inactive Publication Date: 2012-11-28
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that existing carbon nanotubes have large specific surface energy, poor dispersion in

Method used

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  • Multiwall carbon nanotube-polysilane composite material and preparation method thereof
  • Multiwall carbon nanotube-polysilane composite material and preparation method thereof
  • Multiwall carbon nanotube-polysilane composite material and preparation method thereof

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specific Embodiment approach 1

[0020] Embodiment 1: This embodiment is a multi-walled carbon nanotube-polysilane composite material prepared from silanized multi-walled carbon nanotubes, dichlorosilane derivatives, organic solvents and alkali metals.

[0021] The mass ratio of the silanized multi-walled carbon nanotubes described in the present embodiment to the alkali metal is 1: (1.2 ~ 50); the ratio of the mass of the silanized multi-walled carbon nanotubes described in the present embodiment to the volume of the organic solvent is 1g: (200mL~1000mL); the mass ratio of the silanized multi-walled carbon nanotubes described in this embodiment to the dichlorosilane derivative is 1:(10~100).

[0022] The multi-walled carbon nanotube-polysilane composite material described in this embodiment is covalently bonded to the multi-walled carbon nanotube grafted polysilane to obtain a multi-walled carbon nanotube-polysilane composite material, which is compatible with the existing carbon nanotube In comparison, the ...

specific Embodiment approach 2

[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the silanized multi-walled carbon nanotubes are prepared according to the following steps:

[0025]1. Purification: First, calcine the multi-walled carbon nanotubes at a temperature of 480°C~520°C for 20min~40min, and pour the calcined multiwalled carbon nanotubes into hydrochloric acid with a concentration of 4mol / L~6mol / L. And stir at a stirring speed of 600r / min~1000r / min for 30min~50min, then ultrasonically oscillate for 5h~7h with the help of ultrasonic waves with a frequency of 30KHz~50KHz, and then filter with a mixed fiber microporous membrane with a pore size of 0.22μm , the obtained solid filtered product was washed with distilled water until the pH of the filtrate = 7±0.1, and then the washed solid was placed in a vacuum drying oven and dried at a temperature of 40°C~60°C for 20h~28h to obtain a dry The final product is ground to obtain purified multi-walled carbon nanotubes;

[00...

specific Embodiment approach 3

[0036] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the phenol derivative described in step four is hydroquinone or p-aminophenol; the acid-binding agent described in step four is pyridine or triethyl Amine; the cleaning agent described in step four is anhydrous acetone. Others are the same as in the second embodiment.

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Abstract

The invention relates to a multiwall carbon nanotube-polysilane composite material and a preparation method thereof. The invention aims to solve the problems of high specific surface energy, poor dispersity in organic substances, and low combining capacity with organic substances in the existing carbon nanotubes. The multiwall carbon nanotube-polysilane composite material is prepared from silanized multiwall carbon nanotubes, dichlorosilane derivatives, an organic solvent and alkali metals. The method comprises the following steps: 1. preparing purified multiwall carbon nanotubes; 2. preparing acidified multiwall carbon nanotubes; 3. preparing acyl-chlorinated multiwall carbon nanotubes; 4. preparing phenol-derivative-grafted acyl-chlorinated multiwall carbon nanotubes; 5. silanizing to prepare the silanized multiwall carbon nanotubes; and 6. by using alkali metals as the catalyst, polymerizing with dichlorosilane derivatives to obtain the multiwall carbon nanotube-polysilane composite material. The invention is mainly used for preparing the multiwall carbon nanotube-polysilane composite material.

Description

technical field [0001] The invention relates to a carbon nanotube-polysilane composite material and a preparation method thereof. Background technique [0002] Because carbon nanotubes have high stability and excellent electrical conductivity, they have become a research hotspot in the field of new materials in the world. It relies on the delocalization of π electrons and can be represented as a metal type or a semiconductor type, and is an ideal one-dimensional quantum wire. Due to their small diameter and large specific surface energy, carbon nanotubes are prone to agglomeration, which makes their dispersion in organic matter poor; and the carbon nanotube tube body is smooth, and its binding ability with organic matter is weak, and it is easy to Slip relative to the substrate. Contents of the invention [0003] The purpose of the present invention is to solve the problems that existing carbon nanotubes have large specific surface energy, poor dispersion in organic matt...

Claims

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Application Information

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IPC IPC(8): C08G77/60C08K9/06C08K3/04C08L83/16
Inventor 尚岩张桂玲李启富任亮郭英
Owner HARBIN UNIV OF SCI & TECH
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