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Preparation method of Al2O3@CNTs powder with core-shell structure

A technology of core-shell structure and powder, which is applied in the field of preparation of A12O3-coated CNTs powder, which can solve the problems of high surface energy of carbon nanotubes, burning of carbon nanotubes, failure to achieve the enhancement effect, etc., and the reaction process is easy Control, enhanced compatibility, low cost effect

Pending Publication Date: 2020-01-17
YANGZHOU SHENGYE MACHINERY
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Problems solved by technology

Such as CN201810182358.9 "Preparation method of metal-coated carbon nanotube reinforced metal matrix composite material"; CN201810396627.1 "Preparation method of nickel-coated carbon nanotube composite material" and CN201711035583.1 "A kind of four "Magnetic composite material and preparation method of carbon nanotubes coated with iron oxide" all provide methods for coating carbon nanotubes, but there is no research on coating aluminum oxide on carbon nanotubes by precipitation coating method
In addition, due to the high temperature process, the carbon nanotubes will cause burning loss, and the surface energy of the carbon nanotubes is very high, making it easy to form agglomerations, which cannot achieve the ideal reinforcement effect.

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  • Preparation method of Al2O3@CNTs powder with core-shell structure
  • Preparation method of Al2O3@CNTs powder with core-shell structure
  • Preparation method of Al2O3@CNTs powder with core-shell structure

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Embodiment

[0035] See the specific process figure 1 , weighed 33.34g of AlCl 3 , add 125ml of distilled water and stir to dissolve, then filter with a funnel to remove impurities and insoluble matter, save for later use; weigh 45.05g of Na 2 CO 3 , add 200ml of distilled water and stir to dissolve, then filter with a funnel to remove impurities and insoluble matter, and save for future use. Add 0.15g TNWDIS (carbon nanotube water dispersant) into 125ml deionized water, and stir to decompose; wherein, the aromatic ring and the hydrophilic group are connected through a long carbon chain instead of being directly connected, and the hydrophilic group is connected to the space of the aromatic ring. The effect of resistance is weaker, the aromatic ring is more firmly adsorbed on the tube wall of CNTs, and the dispersion effect is better. Then add 1 g of purified CNTs powder into the prepared deionized aqueous solution, stir to form a suspension, and ultrasonically disperse for 20 minutes. ...

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Abstract

The invention discloses a preparation method of aluminum oxide (Al2O3) coated carbon nanotube (CNTs) powder with a core-shell structure. Specifically, a precipitation coating method is adopted to initiate the generation of a precipitant in a system, so modified ions undergo a precipitation reaction and are separated out on the surface of the coated material CNTs, and coated material particles arecoated to obtain the composite powder with the core-shell structure; and thus, the purpose of surface modification of CNTs powder is achieved.

Description

technical field [0001] The invention relates to the technical field of metal oxide / carbon nanotube composite materials, in particular to an A1 with a core-shell structure 2 o 3 The preparation method of coated CNTs powder. Background technique [0002] Carbon nanotubes, also known as bucky tubes, are one-dimensional quantum materials with a special structure (both ends of the tube are basically sealed, the axial dimension is on the order of microns, and the radial dimension is on the order of nanometers). Studies have found that carbon nanotubes have unique mechanical, electrical, and magnetic properties; they also have good stability, good friction and wear resistance, high elastic modulus, unique metal or semiconductor conductivity, hydrogen storage capacity, and strong Excellent microwave absorption ability and excellent properties make CNTs considered as ideal reinforcement materials. However, since CNTs are nanomaterials with large aspect ratio and specific surface, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/168C01F7/30C01F7/02
CPCC01B32/168C01F7/30C01F7/02C01P2004/80
Inventor 徐宏明赵龙志
Owner YANGZHOU SHENGYE MACHINERY