Preparation method of modified multi-wall carbon nano-tube material

A multi-walled carbon nanotube and modification technology, which is applied in the direction of chemical analysis by titration method, can solve the problems of complicated grafting method and cumbersome process procedure, and achieves the reduction of van der Waals force, good hydrophilicity and good polymerization. The effect of biocompatibility

Active Publication Date: 2015-08-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, these grafting methods are relatively complicated, the process procedures are cumbersome, and special chemical environments are required, and there are still many limitations in the future industrial application fields.

Method used

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  • Preparation method of modified multi-wall carbon nano-tube material
  • Preparation method of modified multi-wall carbon nano-tube material
  • Preparation method of modified multi-wall carbon nano-tube material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation of a modified multi-walled carbon nanotube material, comprising the following steps:

[0035] 1) Using N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, a golden yellow viscous liquid amino-terminated hyperbranched polymer (NH 2 -HBP);

[0036] 2) Weigh 5 g of amino-terminated hyperbranched polymers (NH 2 -HBP), put in a three-necked flask, add 50g of ultrapure water and stir until completely dissolved;

[0037] 3) Use a microanalytical balance to weigh 0.5g of carboxyl-terminated carbon nanotubes, add them into a three-necked flask in a water bath at 45°C, react at a stirring speed of 20r / min for 3h, and then obtain modified multi-walled carbon nanotubes by suction filtration The tubes were repeatedly washed with ultrapure water three to four times, and dried in an oven at 60° C. to obtain multi-walled carbon nanotubes grafted with amino-terminated hyperbranched polymers.

Embodiment 2

[0039] A preparation of a modified multi-walled carbon nanotube material, comprising the following steps:

[0040] 1) Using N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, a golden yellow viscous liquid amino-terminated hyperbranched polymer (NH 2 -HBP);

[0041] 2) Weigh 8 g of amino-terminated hyperbranched polymers (NH 2 -HBP), put in a three-necked flask, add 80g of ultrapure water and stir until completely dissolved;

[0042]3) Use a microanalytical balance to weigh 0.8g of carboxyl-terminated carbon nanotubes, add them to a three-necked flask in a water bath at 50°C, react at a stirring speed of 25r / min for 3.5h, and then filter with suction to obtain the modified multi-walled carbon The nanotubes are repeatedly washed with ultrapure water for three to four times, and dried in an oven at 70° C. to obtain multi-walled carbon nanotubes grafted and modified by amino-terminated hyperbranched polymers.

Embodiment 3

[0044] A preparation of a modified multi-walled carbon nanotube material, comprising the following steps:

[0045] 1) Using N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, a golden yellow viscous liquid amino-terminated hyperbranched polymer (NH 2 -HBP);

[0046] 2) Weigh 10 g of amino-terminated hyperbranched polymers (NH 2 -HBP), put in a three-necked flask, add 50g of ultrapure water and stir until completely dissolved;

[0047] 3) Weigh 1 g of carboxyl-terminated carbon nanotubes with a micro-analytical balance, add them to a three-necked flask in a water bath at 55 ° C, react at a stirring speed of 30 r / min for 4 hours, and then obtain modified multi-walled carbon nanotubes by suction filtration , repeatedly washed with ultrapure water for three to four times, and dried in an oven at 80° C. to obtain multi-walled carbon nanotubes grafted with amino-terminated hyperbranched polymers.

[0048] The diameter of the modified multi-walled car...

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Abstract

The invention provides a preparation method of a modified multi-wall carbon nano-tube material. The preparation method takes N,N-methylene bisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials and adopts a Michael addition method for a one-step method to synthesize a golden yellow viscous liquid terminated amino hyperbranched polymer (NH2-HBP). The preparation method comprises the following steps: weighing a certain amount of NH2-HBP and putting into a three-opening flask; adding ultrapure water and completely dissolving; then adding a certain amount of terminated carboxyl carbon nano-tubes into a water bath at 45-55 DEG C; reacting for 3-5 hours at a stirrings peed of 20r/min-30r/min; then drawing and filtering to obtain modified multi-wall carbon nano-tubes; repeatedly washing the modified multi-wall carbon nano-tubes by the ultrapure water for a plurality of times; and drying at 60 DEG C to obtain the multi-wall carbon nano-tubes subjected to terminated amino hyperbranched grafting and modification. The tube walls of the grafted and modified terminated amino hyperbranched multi-wall carbon nano-tubes have a lot of amino so that the product has very good water solubility and solvent solubility; the modified multi-wall carbon nano-tube material can be used as a very good additive and can be dispersed into polymers including a polyurethane coating, a rubber elastic body, functional plastic and the like very well so that the foundation is provided for obtaining a uniform modified multi-wall carbon nano-tube polymer composite material, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the field of end-group graft modification of multi-walled carbon nanotubes, and in particular relates to a preparation method of a modified multi-walled carbon nanotube material. Background technique [0002] Carbon nanotubes are tubular objects with nanometer dimensions, which are composed of several coaxial cylindrical carbon tubes, with a length between 1 and 50 μm and a diameter between 10 and 50 nm. The special structure of carbon nanotubes makes them have very large specific surface area, aspect ratio and complex isotropic staggered structure. The carbon nanotubes prepared in the early stage had many impurities and were irregular. The focus of research was mainly on the preparation of regular and high-purity carbon nanotubes and the reduction of costs. The focus of research has gradually shifted to the modification and practical application of carbon nanotubes. [0003] Due to its excellent properties, carbon nanotubes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08K9/04C08K7/24C08G83/00G01N31/16
Inventor 王海军李金祥王学川王帅毅高治进
Owner SHAANXI UNIV OF SCI & TECH
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