Preparation method of carbon nanotube composite materials

A carbon nanotube and composite material technology, which is applied in the field of carbon nanotube composite material preparation, can solve the problems of carbon nanotube damage, weakened carbon nanotube load transfer effect, etc., and achieves the effect of improving strength

Active Publication Date: 2019-02-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of materials made from nanocomposite particles called CNT's (CNT) or Carbon Nanofibers are being developed for use with various industries such as energy production, transportation, construction, etc., due to their unique combination of physical characteristics that enhance certain technical applications like improved mechanical strength without adding too much mass compared to existing composites used today.

Problems solved by technology

This patented technical problem addressed by this patents relates to how to prepare stable and effective composite materials from certain types of metals like aluminums (A), magnesium oxides (M) and silicon dioxide (SiO2) without compromising their desired qualities.

Method used

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  • Preparation method of carbon nanotube composite materials
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  • Preparation method of carbon nanotube composite materials

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Experimental program
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Effect test

Embodiment 1

[0023] The present invention provides a novel CNTs-Al 4 C 3 / Al composite material and preparation method thereof, comprising the following steps;

[0024] (1) Preparation of Al 4 C 3 / Al composite powder: put carbon nanotubes (purity 95%, 10 μm) and pure aluminum powder (purity 99.5%, average particle size 25 μm) together with a certain number of grinding balls in a ball mill jar under an inert gas protective atmosphere. The quality of the carbon nanotube powder is 1wt.% of the total mass of the mixed powder, and a small amount of stearic acid is added as a process control agent; the ball-to-material ratio is 10:1, and the speed of the ball mill is 250 r / min; The temperature rise of the ball mill, the ball mill rotates forward for 30 minutes, then pauses for 30 minutes, and then reverses for 30 minutes, so that the cycle is carried out, and the cumulative high-energy ball milling takes 24 hours to make carbon nanotubes and pure aluminum powder react to form nano-Al in situ...

Embodiment 2

[0029] (1) Preparation of Al 4 C3 / Al composite powder: carbon nanotubes (purity 95%, 20 μm) and pure aluminum powder (purity 99.5%, average particle size 30 μm) together with a certain number of balls are placed in a ball mill jar under an inert gas protective atmosphere, among which The quality of the carbon nanotube powder is 1.5wt.% of the total mass of the mixed powder, and a small amount of stearic acid is added as a process control agent; the ball-to-material ratio is 10:1, and the ball mill speed is 250 r / min; For the temperature rise of the body, the ball mill rotates forward for 30 minutes, then pauses for 30 minutes, and then reverses for 30 minutes. This cycle is carried out. The cumulative high-energy ball milling takes 24 hours to make carbon nanotubes and pure aluminum powder react to form nano-Al in situ. 4 C 3 particles. In order to obtain nano-Al 4 C 3 Composite powder of particles;

[0030] (2) Preparation of CNTs-Al 4 C 3 / Al composite powder: combin...

Embodiment 3

[0035] (1) Preparation of Al 4 C 3 / Al composite powder: carbon nanotubes (purity 95%, 30 μm) and pure aluminum powder (purity 99.5%, average particle size 20 μm) together with a certain number of balls are placed in a ball mill jar under an inert gas protective atmosphere, among which The quality of the carbon nanotube powder is 2wt.% of the total mass of the mixed powder, and a small amount of stearic acid is added as a process control agent; the ball-to-material ratio is 10:1, and the ball mill speed is 250 r / min; The temperature rise of the ball mill, the ball mill rotates forward for 30 minutes, then pauses for 30 minutes, and then reverses for 30 minutes, so that the cycle is carried out, and the cumulative high-energy ball milling takes 24 hours to make carbon nanotubes and pure aluminum powder react to form nano-Al in situ 4 C 3 Particles; thereby obtaining nano-Al 4 C 3 Composite powder of particles;

[0036] (2) Preparation of CNTs-Al 4 C 3 / Al composite powde...

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Abstract

The invention discloses a preparation method of carbon nanotube composite materials, and belongs to the field of development of metal matrix composite materials. The preparation method comprises the following steps that after carbon nanotube powder and aluminite powder are mixed, ball milling is carried out, the ball milling time is 10h to 30h, and composite powder containing Al4C3 is obtained; after the carbon nanotube and the composite powder are mixed, ball milling is carried out, the ball milling time is 2h to 10h, and then the carbon nanotube and the composite powder are dispersed evenlyto obtain CNTs-Al4C3/Al composite powder; and the CNTs-Al4C3/Al composite powder is subjected to cold press molding at room temperature, and is subjected to sintering in argon environment to obtain asintering blank of CNTs-Al4C3/Al composite materials, and the sintering blank is subjected to hot extrusion to obtain the CNTs-Al4C3/Al composite materials. According to the preparation method of thecarbon nanotube composite materials, nano-aluminium carbide formed in-situ is combined with aluminium matrix well to play cooperative and reinforced actions on the composite materials with CNTs; and the the preparation method of novel aluminum matrix composite materials has good synthesized mechanical properties.

Description

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Claims

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Application Information

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Owner KUNMING UNIV OF SCI & TECH
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