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A treatment method for modified carbon nanotubes

A treatment method, carbon nanotube technology, applied in the field of material science, can solve the problems of composite material processing and use performance degradation, unsatisfactory dispersion, unfriendly environment, etc., to improve biocompatibility, improve processing and use performance , Environmentally friendly effect

Active Publication Date: 2018-02-09
昆明天海实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current carbon nanotubes generally still have the problem of unsatisfactory dispersibility, which is prone to agglomeration, resulting in a decrease in the processing and use performance of its composite materials. Therefore, it is often necessary to use dispersants in its use, and these dispersants There are often problems that are not friendly to the environment and the cost is high

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  • A treatment method for modified carbon nanotubes
  • A treatment method for modified carbon nanotubes
  • A treatment method for modified carbon nanotubes

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Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1 of the present invention: the processing method of modified carbon nanotubes, comprises the following steps,

[0014] 1) React carbon nanotubes in a mixed solution of 150ml sulfuric acid and nitric acid, the mass ratio of sulfuric acid and nitric acid is 1:3, and react at 80°C for 6 hours to obtain purified carbon nanotubes CNT-OH with hydroxyl groups on the surface;

[0015] 2) Add 25g of γ-carotene and 9.8g of maleic anhydride to 60ml of benzene, mix well, and undergo a D-A reaction at 140°C for 4 hours under the protection of nitrogen; then add 93g of epichlorohydrin to the reacted mixture And 0.7g of ammonium bromide, heated to reflux for 6h, then cooled to 73°C, added excess sodium hydroxide, and washed to obtain long-chain compounds;

[0016] 3) Add 0.3mol of long-chain compound to 30ml of aqueous solution, add 0.1mol of sodium hydroxide at 120°C, react for 3h under nitrogen, then add 0.3mol of CNT-OH and 0.2g of tetrabutylammonium bromide to reflux ...

Embodiment 2

[0017] Embodiment 2 of the present invention: the processing method of modified carbon nanotubes, comprises the following steps,

[0018] 1) React carbon nanotubes in a mixed solution of 120ml sulfuric acid and nitric acid, the volume ratio of sulfuric acid and nitric acid is 1:3, and react at 75°C for 7 hours to obtain purified carbon nanotubes CNT-OH containing hydroxyl groups on the surface;

[0019] 2) Add 22g of γ-carotene and 9g of maleic anhydride into 60ml of toluene, mix well, and undergo a D-A reaction at 170°C for 4 hours under the protection of nitrogen; then add 90g of epichlorohydrin and 0.6g ammonium bromide, heated to reflux for 5h, then cooled to 75°C, added excess sodium hydroxide, and washed to obtain long-chain compounds;

[0020] 3) Add 0.5mol of long-chain compound to 30ml of aqueous solution, add 0.15mol of sodium hydroxide at 130°C, react for 4 hours under nitrogen, then add 0.5mol of CNT-OH and 0.5g of tetrabutylammonium bromide to reflux After coolin...

Embodiment 3

[0021] Embodiment 3 of the present invention: the processing method of modified carbon nanotubes, comprises the following steps,

[0022] 1) React carbon nanotubes in a mixed solution of 150ml sulfuric acid and nitric acid, the volume ratio of sulfuric acid and nitric acid is 1:3, and react at 85°C for 5 hours to obtain purified carbon nanotubes CNT-OH containing hydroxyl groups on the surface;

[0023] 2) Add 27g of γ-carotene and 11g of maleic anhydride into 60ml of acetonitrile, mix well, and undergo a D-A reaction at 130°C for 5 hours under nitrogen protection; then add 90g of epichlorohydrin and 0.6g ammonium bromide, heated to reflux for 4 hours, then cooled to 75°C, added excess sodium hydroxide, and washed to obtain long-chain compounds;

[0024] 3) Add 1mol of long-chain compound to 60ml of aqueous solution, add 0.3mol of sodium hydroxide at 140°C, react for 5h under nitrogen, then add 1mol of CNT-OH and 1g of tetrabutylammonium bromide to reflux for 5h, then After c...

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Abstract

The invention discloses a treatment method for modified carbon nanotubes. In the invention, the carbon nanotubes containing hydroxyl groups on the surface are obtained through chemical treatment, and long-chain molecular products are obtained through the chemical method, and then the reaction is triggered by designing conditions through the chemical method, so that the long-chain molecules are grafted onto the carbon nanotubes. This method can improve the dispersibility of carbon nanotubes and avoid agglomeration. The modified long-chain molecules come from a wide range of sources, are environmentally friendly, and are also conducive to improving the biocompatibility of carbon nanotubes, and the modified long-chain molecules provided have relatively Multiple active points can provide more modified carbon nanotubes, so that the obtained modified carbon nanotubes can adjust the viscosity of the matrix, and can improve the processing and use performance. The method of the invention is simple and has good application effect.

Description

technical field [0001] The invention relates to the field of material science, in particular to a treatment method for modified carbon nanotubes. Background technique [0002] As a one-dimensional nanomaterial, carbon nanotubes are light in weight, perfectly connected in a hexagonal structure, and have many unusual mechanical, electrical, and chemical properties. In recent years, with the in-depth research of carbon nanotubes and nanomaterials, their broad application prospects are constantly showing. However, the current carbon nanotubes generally have the problem of unsatisfactory dispersibility, and are prone to agglomeration, resulting in a decrease in the processing and use performance of their composite materials. Therefore, it is often necessary to use dispersants in their use, and these dispersants There are often problems of being unfriendly to the environment and having high costs. Contents of the invention [0003] The technical problem to be solved by the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K7/24C08L23/12
Inventor 王市伟魏喜苹
Owner 昆明天海实业有限责任公司