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A kind of preparation method of modified multi-walled carbon nanotube material

A multi-walled carbon nanotube and modification technology, which is applied in chemical analysis by titration method, can solve the problems of complex grafting methods and cumbersome process procedures, and achieve reduced van der Waals force, good hydrophilicity, and good polymerization The effect of biocompatibility

Active Publication Date: 2017-10-13
上海大展时代纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A kind of preparation method of modified multi-walled carbon nanotube material
  • A kind of preparation method of modified multi-walled carbon nanotube material
  • A kind of preparation method of modified multi-walled carbon nanotube material

Examples

Experimental program
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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) Then weigh 0.8g of carboxyl-terminated carbon nanotubes with a microanalytical balance, add them into a three-necked flask in a water bath at 50°C, react at a stirring speed of 25r / min for 3.5h, and then obtain the modified multi-walled carbon by suction filtration 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 1g of carboxyl-terminated carbon nanotubes with a microanalytical balance, add them to a three-necked flask in a water bath at 55°C, react at a stirring speed of 30r / min for 4h, 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 carbon nanotub...

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Abstract

The invention provides a preparation method of a modified multi-wall carbon nanotube material. The present invention uses N,N-methylenebisacrylamide (MBA) and diethylenetriamine (DETA) as raw materials, and adopts a "one-step method" to synthesize a golden yellow viscous liquid amino-terminated hyperbranched polymer substances (NH2‑HBP). Weigh a certain amount of NH2‑HBP into a three-necked flask, add ultrapure water to dissolve completely, then add a certain amount of carboxyl-terminated carbon nanotubes, and react in a water bath at 45°C to 55°C with a stirring speed of 20 to 30r / min After 3-5 hours, the modified multi-walled carbon nanotubes were obtained by suction filtration, washed several times with ultrapure water, and dried at 60° C. to obtain the modified multi-walled carbon nanotubes modified by amino-terminated hyperbranched grafts. The amino-terminated hyperbranched multi-walled carbon nanotubes after graft modification have very good water solubility and solvent solubility because there are many amino groups on the tube wall, so they can be used as a good additive. It can be well dispersed between polymers such as polyurethane coatings, rubber elastomers, and functional plastics, thereby providing a basis for obtaining uniform multi-walled carbon nanotube polymer composite materials, and has broad application prospects.

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 Patents(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 上海大展时代纳米科技有限公司
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