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Preparation method of metal matrix carbon nanotube reinforced composite material

A reinforced composite material and carbon nanotube technology, which is applied in the field of preparation of metal-based carbon nanotube reinforced composite materials, can solve the problems of difficult control of carbon nanotube shape, unfavorable industrial production, unfavorable environmental friendliness, etc., and achieve short preparation cycle, Conducive to large-scale production, combined with good results

Active Publication Date: 2017-11-14
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above process has effectively studied the dispersion of carbon nanotubes on the metal surface and the interface between carbon nanotubes and metal substrates. However, there are also problems in the preparation process, such as the introduction of strong acid and strong alkali, which are not conducive to environmental friendliness, and the reaction temperature is too high. , the shape of in-situ generated carbon nanotubes is difficult to control, the efficiency is low, and it is not conducive to industrial production.

Method used

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  • Preparation method of metal matrix carbon nanotube reinforced composite material
  • Preparation method of metal matrix carbon nanotube reinforced composite material
  • Preparation method of metal matrix carbon nanotube reinforced composite material

Examples

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Embodiment 1

[0034] The preparation process of the aluminum-based carbon nanotube composite material of the present embodiment is carried out in the following steps:

[0035] (1) 1g carbon nanotubes and 300g pure aluminum particles (composition is 99.0wt.%, particle diameter is 400 mesh) join in the beaker that fills 1000g isopropanol, after making aluminum powder immerse completely in the solution, put The beaker was placed in a warm water bath for ultrasonic dispersion and mechanically stirred with a booster electric stirrer. The water temperature is 60°C, the ultrasonic dispersion time is 80min, and the ultrasonic power is 500W; the mechanical stirring time is 60min, and the stirring speed is 100rpm to obtain a mixed slurry of carbon nanotubes and pure aluminum powder;

[0036] (2) Put the mixed slurry of carbon nanotubes and pure aluminum powder obtained in step (1) into a planetary high-energy ball mill for ball milling, the ball milling time is 20min, the rotating speed is 100r / min, ...

Embodiment 2

[0041] The preparation technology of the magnesium-based carbon nanotube composite material of the present embodiment is carried out according to the following steps:

[0042] (1) 4g carbon nanotubes and 96g pure magnesium particles (composition is 99.7wt.%, particle diameter is 300 orders) join in the beaker that fills 1000g isopropanol, after magnesium powder is fully submerged in solution, will The beaker was placed in a warm water bath for ultrasonic dispersion and mechanically stirred with a booster electric stirrer. The water temperature is 50°C, the ultrasonic dispersion time is 60min, and the ultrasonic power is 200W; the mechanical stirring time is 30min, and the stirring speed is 300rpm to obtain a mixed slurry of carbon nanotubes and pure magnesium powder;

[0043](2) Put the carbon nanotube and pure magnesium powder mixed slurry obtained in step (1) into a planetary high-energy ball mill and carry out ball milling, the ball milling time is 30min, the rotating speed...

Embodiment 3

[0048] The preparation process of the copper-based carbon nanotube composite material of the present embodiment is carried out in the following steps:

[0049] (1) 4g carbon nanotubes and 80g pure copper particles (composition is 99.5wt.%, particle diameter is 100 orders) join in the beaker that fills 600g isopropanol, after copper powder is fully submerged in the solution, put The beaker was placed in a warm water bath for ultrasonic dispersion and mechanically stirred with a booster electric stirrer. The water temperature is 30°C, the ultrasonic dispersion time is 30min, and the ultrasonic power is 1000W; the mechanical stirring time is 10min, and the stirring speed is 3000rpm to obtain a mixed slurry of carbon nanotubes and pure copper powder;

[0050] (2) put the carbon nanotube and pure copper powder mixed slurry obtained in step (1) into a planetary high-energy ball mill and carry out ball milling, the ball milling time is 90min, the rotating speed is 300r / min, and the m...

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Abstract

The invention discloses a preparation method of a metal-based carbon nanotube reinforced composite material, and belongs to the field of preparation of metal-based composite materials. The method uses a series of process flows for uniformly dispersing carbon nanotubes and metal particles to obtain the metal-based carbon nanotube reinforced composite material. The method comprises the following specific steps: (1) the metal particles and the carbon nanotubes are mixed; (2) the ball grinding is performed for metal particle and carbon nanotube mixed slurry; (3) the metal particle and carbon nanotube mixed slurry is dried; (4) the ball grinding is performed for metal particle and carbon nanotube dried powder; and (5) metal-based carbon nanotube reinforced composite powder is molded through extruding. The method has such characteristics as simple preparation process, environmental protection and possession of large-scale application potential, and is suitable for such fields as aerospace and vehicle manufacturing having the high-mass and high-strength material demands.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method of a metal-based carbon nanotube reinforced composite material. Background technique [0002] Carbon nanotubes (CNTs) have shown good application prospects in many fields such as nanoelectronics, precision machinery, and medical devices due to their special mechanical, thermal, magnetic, and electrical properties since their discovery. The tensile strength of carbon nanotubes can reach 50-200GP, which is more than 100 times that of steel, and the density is only 1.35g / cm 3 , the elastic modulus is as high as 1TPa, about 5 times that of steel, and is considered to be the most promising ideal reinforcement for ceramics, polymers and metal matrix composites. Carbon nanotubes are not wettable with most metal materials, so the preparation of metal-based carbon nanotube composites by conventional liquid phase methods is limited. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/14C22C49/14C22C101/10
Inventor 杜文博张云鹏王朝辉李淑波刘轲杜宪
Owner BEIJING UNIV OF TECH
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