Modified carbon nanotube treatment method

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

Active Publication Date: 2015-12-16
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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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 modified carbon nanotube treatment method. The method comprises that carbon nanotubes with surface hydroxyl are obtained by a chemical treatment method, a long-chain molecule product is obtained by a chemical method, and the carbon nanotubes and the long-chain molecule product undergo a reaction under chemically designed conditions so that the long-chain molecule is grafted to the carbon nanotube. The modified carbon nanotube treatment method can improve carbon nanotube dispersibility and prevent agglomeration. The modified long-chain molecule has a wide source, is environmentally friendly, is conducive to improvement of carbon nanotube biocompatibility, has a lot of active points and can be used for modification of a lot of carbon nanotubes. The modified carbon nanotube can adjust base viscosity and improve processing and use performances. The modified carbon nanotube treatment method has simple processes and good use effects.

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 Applications(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
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