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Method for preparing carbon nano-tube by catalyzing and carbonizing polymer and /or asphalt

A technology of carbon nanotubes and catalytic carbonization, which is applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of complex preparation process, etc., and achieve the effect of easy mixing, simplified preparation process and obvious effect

Active Publication Date: 2008-07-09
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for preparing carbon nanotubes by catalytic carbonization of polymers and / or pitches, to overcome the complex defects of the prior art preparation process

Method used

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  • Method for preparing carbon nano-tube by catalyzing and carbonizing polymer and /or asphalt
  • Method for preparing carbon nano-tube by catalyzing and carbonizing polymer and /or asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First prepare α-zirconium phosphate, then use methylamine to perform interlayer pre-support, and then use hexadecyltrimethylammonium bromide to further intercalate it to obtain organically modified zirconium phosphate; according to the mass ratio of 3 : 97 Weigh organically modified zirconium phosphate and styrene-butadiene-acrylonitrile copolymer, first place styrene-butadiene-acrylonitrile copolymer in the internal mixer, heat to molten state and start stirring, then add Organically modified zirconium phosphate, continue mixing and stirring for 10 minutes, stop stirring, and take out the composite material formed by the copolymer and organically modified zirconium phosphate.

[0021] The composite material formed by the copolymer and organically modified zirconium phosphate is placed in the constant temperature zone of the reaction chamber of a muffle furnace at 360°C, and reacted under air conditions for 1 hour to obtain the product. Fig. 1 has provided the high-reso...

Embodiment 2

[0024] First prepare α-zirconium phosphate, then use ethylamine to carry out interlayer pre-support, and then use octadecyltrimethylammonium chloride to further intercalate it to obtain organically modified zirconium phosphate; according to the mass ratio of 3 : 97 take organically modified zirconium phosphate and butadiene-styrene copolymer; butadiene-styrene copolymer is placed in the internal mixer, heated to molten state and start stirring, then add organically modified zirconium phosphate, continue Mix and stir for 10 minutes, stop stirring, and take out the composite material formed by the butadiene-styrene copolymer and the organically modified zirconium phosphate.

[0025] Put the composite material in the constant temperature zone of the reaction chamber of the muffle furnace at 800°C, and react under air conditions for 1 hour to obtain carbon nanotubes with a length of 200nm-6μm and a diameter of 50-200nm. The degree of chemical transformation is high, and there are ...

Embodiment 3

[0027] First prepare α-zirconium phosphate, then use ethylamine to carry out interlayer pre-support, and then use tetradecyl dimethyl benzyl ammonium chloride to further intercalate it to obtain organically modified zirconium phosphate; Weigh organically modified zirconium phosphate and butadiene-styrene copolymer at a ratio of 5:95; dissolve the butadiene-styrene copolymer in toluene and place it in a stainless steel reactor lined with polytetrafluoroethylene, and then add Organically modified zirconium phosphate powder, after stirring evenly, put it into an oven and react at 150°C for 3h; then take out the product and dry it at 80°C for 24h, remove the solvent toluene, and obtain the butadiene-styrene copolymer and organically modified zirconium phosphate. composite material.

[0028] The composite material is placed in the constant temperature zone of the reaction chamber of a muffle furnace at 600°C, and reacted under air conditions for 30 minutes to obtain the product.

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Abstract

The invention relates to a method for preparing a carbon nanometer pipe by catalyzing and carbonizing polymer and / or pitch. The invention is characterized in that the method comprises preparing alpha-zirconium phosphate firstly, then proceeding interlaminar pre-support to the alpha-zirconium phosphate with methylamine or ethylamine, then further intercalating with quaternary ammonium salt to obtain organic modified zirconium phosphate, preparing the raw material polymer and / or pitch and 1%-5% organic modified zirconium phosphate of the raw material polymer and / or pitch to obtain the product via melt-blending process, solvent heat reaction method, monomer intercalation-In situ polymerization or solvent reaction method, then heating the product to the temperature of 300-1000 DEG C and then obtaining the multi-wall carbon nanometer pipe with the diameter ranging from several nanometers to several hundred nanometers, and the length ranging from dozens of nanometers to several micrometer. The invention only needs to add catalyst organic modified zirconium phosphate, thereby the preparing procedure can be simplified, and the needed reacting time is reduced.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotube preparation, and in particular relates to a method for preparing carbon nanotubes by catalyzing carbonization of polymers containing styrene and acrylonitrile and / or pitch by organically modified α-zirconium phosphate. Background technique [0002] Since the British "Nature" magazine ("Nature", 1991, No. 354, pages 56-58) published carbon nanotubes (Carbon nanotubes, referred to as CNTs) discovered by electron microscope expert Iijima Sumio (Iijima), after After more than ten years of development, the commonly used carbon nanotube preparation methods mainly include: arc discharge method, laser ablation method, chemical vapor deposition method, solid phase pyrolysis method, glow discharge method, gas combustion method and polymerization reaction synthesis method Wait. The preparation of carbon nanotubes by the arc discharge method is technically relatively simple, but the reaction consumes...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00
Inventor 胡源杨丹丹宋磊
Owner UNIV OF SCI & TECH OF CHINA
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