Preparation method of CNT (carbon nano tube) reinforced aluminum composite

A carbon nanotube and aluminum-based technology, applied in the field of materials, can solve the problems of weakening the mechanical properties of composite materials, easy agglomeration and deactivation of catalysts, and large specific surface area of ​​substrates, achieving good generalizability, short acidification treatment time, and solving problems the effect of reunion

Inactive Publication Date: 2018-09-07
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this process is that the impregnation process requires a large specific surface area of ​​the substrate, and the catalyst is easy to agglomerate and deactivate
At the same time, this method fails to dry the liquid when the carbon nanotubes are embedded on the surface of the aluminum particles, which can easily lead to the re-agglomeration of the carbon nanotubes and weaken the mechanical properties of the composite.

Method used

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  • Preparation method of CNT (carbon nano tube) reinforced aluminum composite
  • Preparation method of CNT (carbon nano tube) reinforced aluminum composite
  • Preparation method of CNT (carbon nano tube) reinforced aluminum composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Mix concentrated nitric acid and concentrated sulfuric acid at a volume ratio of 1:3 to form a mixed acid solution, acidify 0.4g of carbon nanotubes in the mixed acid solution for 2 hours to remove amorphous carbon, then suction filter and dry to remove soluble impurities ;

[0031] 2) Mix ethanol and acetone in a volume ratio of 1:1.1 to form a mixed organic solution, dissolve the carbon nanotubes treated in step 1) in 500mL mixed organic solution, add 0.1g Al(NO 3 ) 3 , sonicated for 4 hours to obtain a uniform and stable CNTs plating solution;

[0032] 3) Cut the pure aluminum foil into a size of 40×40mm 2 The small square piece, wash the oil on the surface with acetone, and put it in acetone for preservation;

[0033] 4) The aluminum foil obtained in step 3) was used as the electroplating cathode, and the stainless steel sheet was used as the electroplating anode, and placed in the electrophoretic deposition mold. The distance between the two electrodes was co...

Embodiment 2

[0037] 1) Mix concentrated nitric acid and concentrated sulfuric acid at a volume ratio of 1:3 to form a mixed acid solution, acidify 0.4 g of carbon nanotubes in the mixed acid solution for 2 hours to remove amorphous carbon, then suction filter and dry to remove soluble impurities ;

[0038] 2) Mix organic solution with ethanol and acetone at a volume ratio of 1:1.1, dissolve the carbon nanotubes treated in step 1) in 500 mL mixed organic solution, add 0.1g Al(NO 3 ) 3 , sonicated for 4 hours to obtain a uniform and stable CNTs plating solution;

[0039] 3) Cut the pure aluminum foil into a size of 40×40mm 2 The small square piece, wash the oil on the surface with acetone, and put it in acetone for preservation;

[0040] 4) The aluminum foil obtained in step 3) was used as the electroplating cathode, and the stainless steel sheet was used as the electroplating anode, and placed in the electrophoretic deposition mold. The distance between the two electrodes was controlled ...

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Abstract

The invention provides a simple preparation method of a CNT (carbon nano tube) reinforced aluminum composite. The method comprises the following steps: firstly, CNTs are subjected to acidification pretreatment for 2-4 h; then the CNTs are dispersed in a mixed organic solution formed by ethanol and acetone, aluminium nitrate is added for ultrasonic processing, and a uniformly dispersed CNT electroplating solution is obtained; then, electrophoretic deposition is performed with aluminum foil serving as an electroplating cathode and a stainless steel sheet serving as an electroplating anode, an aluminum foil laminate obtained through electrophoretic deposition is subjected to SPS (spark plasma sintering) and room-temperature rolling, and the CNT reinforced aluminum composite is obtained. The CNT reinforced aluminum composite prepared with the process not only has high tensile strength, but also has improved work hardening rate and uniform deformability while keeping better elongation, is simple to operate and low in cost, and has good generalizability.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a carbon nanotube reinforced aluminum-based composite material. Background technique [0002] With the rapid development of modern industry, the performance requirements for structural materials are getting higher and higher. The density of pure aluminum is small (ρ=2.7g / cm 3 ), low melting point (660°C), and a face-centered cubic structure, so it has high plasticity and is easy to process. Pure aluminum has good corrosion resistance, but low strength, and the annealed state σ b The value is about 8kgf / mm 2 , so it is not suitable for structural materials. Aluminum matrix composites have the characteristics of high specific strength and specific modulus, high fatigue resistance, good wear resistance and low density. At the same time, aluminum-based composite materials have many advantages such as a wide range of alloy selection, heat tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C26/00C22C1/05C25D15/00
CPCC22C21/00C22C1/05C22C26/00C22C2026/002C25D15/00
Inventor 陈俊锋梁思琰姜严婕任魏巍
Owner FUZHOU UNIV
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