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Preparation method of CNTs/Ni composite material with high strength and high plasticity

A composite material and high plasticity technology, applied in electrolytic coatings, electrodes, coatings, etc., can solve problems such as poor dispersion of carbon nanotubes, and achieve the effect of improving strength and plasticity

Pending Publication Date: 2020-05-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of high-strength and high-plasticity CNTs / Ni composite material. The method adopts a direct current electrodeposition process, uses pure nickel as an anode, and uses a stainless steel sheet as a cathode for electrodeposition, and continuously adds magnetic Stirring and intermittent introduction of ultrasonic waves have solved the problem of poor dispersion of carbon nanotubes, and prepared high-performance composite materials with layered structures with different carbon nanotube contents; specifically, the following steps are included:

Method used

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  • Preparation method of CNTs/Ni composite material with high strength and high plasticity
  • Preparation method of CNTs/Ni composite material with high strength and high plasticity
  • Preparation method of CNTs/Ni composite material with high strength and high plasticity

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Carry out pretreatment to carbon nanotube: put the carbon nanotube of 5g / L in H 2 SO 4 and HNO 3 In the mixed solution (H 2 SO 4 and HNO 3 The volume ratio is 3:1), ultrasonically stirred for 20min, acidified in a water bath at 70°C for 5h, washed with distilled water until pH = 7, and then dried at 120°C.

[0026] (2) Perform pre-plating treatment on the stainless steel sheet with a thickness of 0.26mm: polish it with sandpaper until it is bright, and the order of the sandpaper used for grinding is 180#, 240#, 400#, 800#, 1200#, 2000#, rinse with water After that, place it in deionized water for ultrasonic cleaning for 15 minutes, pickle for 5 minutes (hydrochloric acid 5ml / L), connect the stainless steel sheet to the negative electrode of the power supply, and use a pure nickel plate (purity of 99.99wt%) as the anode. After polishing, cleaning and wrapping gauze Connect to the positive pole of the power supply.

[0027] (3) Prepare the plating solution: the ...

Embodiment 2

[0032] (1) Carry out pretreatment to carbon nanotube: put the carbon nanotube of 5g / L in H 2 SO 4 and HNO 3 In the mixed solution (H 2 SO 4 and HNO 3 The volume ratio is 3:1), ultrasonically stirred for 20min, acidified in a water bath at 70°C for 5h, washed with distilled water until pH = 7, and then dried at 120°C.

[0033] (2) Perform pre-plating treatment on the stainless steel sheet with a thickness of 0.26mm: polish it with sandpaper until it is bright, and the order of the sandpaper used for grinding is 180#, 240#, 400#, 800#, 1200#, 2000#, rinse with water After that, place it in deionized water for ultrasonic cleaning for 15 minutes, pickle for 5 minutes (hydrochloric acid 5ml / L), connect the stainless steel sheet to the negative electrode of the power supply, and use a pure nickel plate (purity of 99.99wt%) as the anode. After polishing, cleaning and wrapping gauze Connect to the positive pole of the power supply.

[0034] (3) Prepare the plating solution: the ...

Embodiment 3

[0039] (1) Carry out pretreatment to carbon nanotube: put the carbon nanotube of 5g / L in H 2 SO 4 and HNO 3 In the mixed solution (H 2 SO 4 and HNO 3 The volume ratio is 3:1), ultrasonically stirred for 20min, acidified in a water bath at 70°C for 5h, washed with distilled water until pH = 7, and then dried at 120°C.

[0040] (2) Perform pre-plating treatment on the stainless steel sheet with a thickness of 0.26mm: polish it with sandpaper until it is bright, and the order of the sandpaper used for grinding is 180#, 240#, 400#, 800#, 1200#, 2000#, rinse with water After that, place it in deionized water for ultrasonic cleaning for 15 minutes, pickle for 5 minutes (hydrochloric acid 5ml / L), connect the stainless steel sheet to the negative electrode of the power supply, and use a pure nickel plate (purity of 99.99wt%) as the anode. After polishing, cleaning and wrapping gauze Connect to the positive pole of the power supply.

[0041] (3) Prepare the plating solution: the ...

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Abstract

The invention discloses a preparation method of a CNTs / Ni composite material with high strength and high plasticity, and belongs to the technical field of metal material processing. According to the preparation method based on the bionic design of a pearl layer structure, a composite electrodeposition process is adopted, a stainless steel sheet is taken as a substrate material, in the whole electrodeposition process, stirring is additionally adopted, and ultrasonic waves and an applied magnetic field are indirectly introduced to successfully prepare the microscopic layered CNTs / Ni composite material with the high strength and the high plasticity. The preparation method is simple in process, layered composite materials with different carbon nanotube contents are prepared, layers rich in carbon nanotubes and layers containing few carbon nanotubes are formed, and thus the good plasticity is achieved while the material strength is significantly improved.

Description

technical field [0001] The invention relates to a preparation method of a high-strength and high-plasticity CNTs / Ni composite material, belonging to the technical field of metal material processing. Background technique [0002] At present, the methods for preparing metal matrix composites mainly include liquid metal pressure infiltration, squeeze casting, vacuum suction casting, liquid metal stirring, rapid solidification and other liquid phase methods and hot isostatic pressing, high temperature hot pressing, powder metallurgy and other solid methods. The methods all need to be carried out at high temperature, and different degrees of interfacial reactions, element diffusion, segregation, etc. will inevitably occur between the matrix and the reinforcement, which will reduce the comprehensive performance of the composite material to varying degrees. In addition, the researchers proposed composite electrodeposition method, molecular level mixing method, stretching dispersion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12C25D3/56C25D15/00C25D5/20C25D17/10
CPCC25D3/12C25D3/562C25D15/00C25D5/20C25D17/10
Inventor 舒佰坡雷运王宁
Owner KUNMING UNIV OF SCI & TECH
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