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Fluorine-containing polymer functionalized carbon nanotube and preparation method thereof

A technology of carbon nanotubes and single-walled carbon nanotubes, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as the danger of big explosions and the inapplicability of acute toxicity , to achieve the effects of low preparation cost, overcoming danger and severe toxicity, and simple operation

Inactive Publication Date: 2015-06-10
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method has the characteristics of low cost and does not affect the structure of the material body, it has the disadvantages of high risk of explosion, high toxicity, and inapplicability to large-scale carbon nanotube fluorination treatment.

Method used

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  • Fluorine-containing polymer functionalized carbon nanotube and preparation method thereof
  • Fluorine-containing polymer functionalized carbon nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A carbon nanotube functionalized with a fluorine-containing high polymer is prepared by a method comprising the following steps:

[0036] (1) Calculated according to the mass ratio, that is, the ratio of carbon nanotubes: fluorine-containing monomer is 1:5, put 0.3g of carbon nanotubes and 1.5g of fluorine-containing monomer into the vacuum chamber of the plasma chemical vapor deposition furnace , when evacuated to 0.1Pa, high-purity argon gas is introduced at a temperature of 10°C, the pressure of the vacuum chamber is adjusted to 10Pa, and the plasma power of 50W is used for 10min;

[0037] The carbon nanotubes are multi-walled carbon nanotubes with a diameter of 10-20nm, a length of 5-15mm, and a purity>97%;

[0038] The fluorine-containing monomer is a perfluoroalkyl methacrylate with a molecular weight of 142;

[0039] (2) Introduce high-purity oxygen into the vacuum chamber for 5 minutes, then heat it to 80°C, and process it with a plasma power of 30W for 20 minu...

Embodiment 2

[0044] A carbon nanotube functionalized with a fluorine-containing high polymer is prepared by a method comprising the following steps:

[0045] (1) Calculated according to the mass ratio, that is, the ratio of carbon nanotubes: fluorine-containing monomer is 1:5, put 0.3g of carbon nanotubes and 1.5g of fluorine-containing monomer into the vacuum chamber of the plasma chemical vapor deposition furnace , when evacuated to 0.1Pa, high-purity argon gas is introduced at a temperature of 15°C, the pressure of the vacuum chamber is adjusted to 10Pa, and the plasma power of 65W is used for the first plasma treatment for 20min;

[0046] The carbon nanotubes are double-walled carbon nanotubes with diameter90%;

[0047] The fluorine-containing monomer is perfluoroamidomethacrylate with a molecular weight of 312;

[0048] (2) Introduce high-purity oxygen into the vacuum chamber for 5 minutes, then heat to 80° C., and perform a second plasma treatment for 20 minutes with a plasma power ...

Embodiment 3

[0052] A carbon nanotube functionalized with a fluorine-containing high polymer is prepared by a method comprising the following steps:

[0053] (1) Calculated according to the mass ratio, that is, the ratio of carbon nanotubes: fluorine-containing monomer is 1:2, put 0.3g of carbon nanotubes and 0.6g of fluorine-containing monomer into the vacuum chamber of the plasma chemical vapor deposition furnace , when evacuated to 0.1Pa, high-purity argon gas is introduced at a temperature of 25°C, the pressure of the vacuum chamber is adjusted to 10Pa, and the plasma power of 50W is used for the first plasma treatment for 10min;

[0054] The carbon nanotubes are single-walled carbon nanotubes with diameter90%;

[0055] The fluorine-containing monomer is a fluorine-containing enol with a hydroxyl group, and its structural formula is as follows:

[0056]

[0057] (2) Introduce high-purity oxygen into the vacuum chamber for 10 minutes, then heat to 50° C., and perform a second plasma...

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Abstract

The invention discloses a fluorine-containing polymer functionalized carbon nanotube and a preparation method thereof. The fluorine-containing polymer functionalized carbon nanotube comprises a carbon nanotube and a fluorine-containing monomer in a mass ratio of 1: (2-10) and is obtained by graft polymerization on the surface of the carbon nanotube under the induction effect of fluorine-containing monomer. The preparation method comprises the following steps of: firstly placing the carbon nanotube and the fluorine-containing monomer in a plasma furnace; vacuumizing and introducing high-purity argon for carrying out first plasma treatment; activating with oxygen, raising temperature, and carrying out secondary plasma treatment; washing a product with acetone, carrying out vacuum filtration and drying, thus obtaining the non-toxic fluorine-containing polymer functionalized carbon nanotube with a undamaged body structure and high lubrication. The preparation method has the advantages of simple and safe operation, environmental protection and short production period. The fluorine-containing polymer functionalized carbon nanotube obtained in the end has high functionalization degree and high reaction activity and effectively overcomes the problems that the surface of the carbon nanotube is inert, and the carbon nanotube self winds and aggregates.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and in particular relates to a carbon nanotube functionalized with a fluorine-containing high polymer and a preparation method thereof. Background technique [0002] Carbon nanotubes (CNTs) are recognized as the most ideal modifier of polymer materials because of their special physical, chemical and mechanical properties, but their actual modification effect is not ideal. This is due to the fact that the surface of carbon nanotubes is chemically inert, and there are serious problems of self-winding and self-aggregation. In recent years, people have developed CNTs modification methods such as strong acid oxidation and direct surface fluorination, which can change their surface chemical composition and structure to a certain extent, and improve their compatibility and reactivity with polymer materials. [0003] Strong acid oxidation is the most common method, which is easy to operate and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82Y30/00C01B32/168
Inventor 贾润萍代丽宗安新王彩峰魏路
Owner SHANGHAI INST OF TECH
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