Preparation method of hydroxylated multi-wall carbon nanotube-polysilane composite material

A multi-wall carbon nanotube and composite material technology is applied in the field of preparation of multi-wall carbon nanotube-polysilane composite materials, can solve the problems of complex synthesis steps, difficult reaction control, low content of silicon elements, etc., and achieves simple synthesis steps , improve thermal stability and electrical conductivity, improve the effect of reactivity

Inactive Publication Date: 2014-08-27
HARBIN UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the existing multi-walled carbon nanotube-polysilane composite material preparation method that has complex synthesis steps, uneasy control of the reaction and poor repeatability, and the prepared multi-walled carbon nanotube-polysilane composite material The problem of low silicon element content, and provide a kind of preparation method of hydroxylated multi-walled carbon nanotube-polysilane composite material

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  • Preparation method of hydroxylated multi-wall carbon nanotube-polysilane composite material
  • Preparation method of hydroxylated multi-wall carbon nanotube-polysilane composite material
  • Preparation method of hydroxylated multi-wall carbon nanotube-polysilane composite material

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specific Embodiment approach 1

[0023] Embodiment 1: This embodiment is a method for preparing a hydroxylated multi-walled carbon nanotube-polysilane composite material, which is specifically completed according to the following steps:

[0024] 1. Purification: (1) Calcination: First, calcine the multi-walled carbon nanotubes at a temperature of 420°C~480°C for 20min~40min to obtain the calcined multiwalled carbon nanotubes; (2) Nitric acid purification: the calcined Pour the multi-walled carbon nanotubes into the nitric acid aqueous solution with a concentration of 3mol / L~6mol / L, and stir for 12h~24h at a temperature of 20°C~25°C and a stirring speed of 500r / min~1000r / min, and then use G4 sand core funnel is filtered, and the filter cake obtained by filtering is rinsed with distilled water until the pH of the filtrate=7±0.1, that is, the multi-walled carbon nanotubes after nitric acid purification are obtained; (3) hydrochloric acid purification: the purified nitric acid The multi-walled carbon nanotubes we...

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the dichlorosilane derivatives described in step three (2) are dimethyl dichlorosilane, diethyl dichlorosilane, dipropyl Dichlorosilane, methylphenyldichlorosilane or methylvinyldichlorosilane. Others are the same as the first embodiment.

specific Embodiment approach 3

[0037] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the organic solvent described in step four (1) is toluene, xylene, octane or cycloheptane. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a preparation method of a hydroxylated multi-wall carbon nanotube-polysilane composite material, relates to a preparation method of a multi-wall carbon nanotube-polysilane composite material, and aims to solve the problems that the synthesis steps are complicated, the reaction is difficult to control and the repetitiveness is poor in the existing preparation method of a multi-wall carbon nanotube-polysilane composite material and the prepared multi-wall carbon nanotube-polysilane composite material is low in silicon element content. The method comprises the following steps: 1, purifying to obtain a purified multi-wall carbon nanotube; 2, performing hydroxylation reaction on the purified multi-wall carbon nanotube to obtain a hydroxylated multi-wall carbon nanotube; 3, grafting the hydroxylated multi-wall carbon nanotube with a silane monomer to obtain a silane-multi-wall carbon nanotube; and 4, performing polymerization reaction to obtain the hydroxylated multi-wall carbon nanotube-polysilane composite material. The invention is mainly used for the preparation of the hydroxylated multi-wall carbon nanotube-polysilane composite material.

Description

technical field [0001] The invention relates to a preparation method of a multi-walled carbon nanotube-polysilane composite material. Background technique [0002] The large-scale delocalized π electrons on the surface of carbon nanotubes make them have unique mechanical, electrical, and thermal properties, and have become a hot research topic for scientists. However, due to the easy agglomeration between adjacent carbon nanotubes, poor solubility and poor dispersibility in solvents, resulting in poor processability. The carbon nanotube-polysilane composite material prepared by modifying carbon nanotubes with polysilane can well overcome the entanglement between adjacent carbon nanotubes, and increase the dispersion and processability of carbon nanotubes in the composite. However, due to the complex synthesis steps, uneasy control of the reaction and poor repeatability of the previous preparation method, and the low content of silicon in the prepared multi-walled carbon nan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/60C08K9/06C08K7/00C08K3/04C08L83/16
Inventor 尚岩周珊珊张桂玲
Owner HARBIN UNIV OF SCI & TECH
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