Foam metal-carbon nano tube composite material and preparation method thereof

A foam metal, carbon nanotube technology, applied in electrolytic coatings, electrophoretic plating, coatings, etc., can solve the problems of poor spraying method, complicated instrument operation, limited application scope, etc., to broaden design ideas, conductivity performance Good, low-cost effects

Inactive Publication Date: 2017-05-31
CHANGDE LYRUN MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The CVD method is expensive and the instrument operation is complicated; the poor effect of the spraying method limits its application range

Method used

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  • Foam metal-carbon nano tube composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Clean the foamed nickel substrate: immerse three foamed nickels with PPI of 20, 90, 110 and a thickness of 1.51 mm in a mixed solution of acetone and ethanol with a volume ratio of 1:1, ultrasonic cleaning for 30 minutes, and then in 6mol Soak in 1 / L HCl solution for 30 minutes to remove surface oxides, and finally wash with deionized water and dry;

[0025] (2) Modified carbon nanotubes: Weigh 45mg of multi-walled carbon nanotubes with a diameter of 20-30nm and 150mg of 60% dimethyldiallyl ammonium chloride aqueous solution, add 150ml of methanol to prepare carbon nanotubes with a concentration of 0.3mg / ml of electrolyte solution, sonicate for 3 hours at room temperature.

[0026] (3) Electrophoretic deposition: use the molybdenum electrode as the anode, the nickel foam cleaned in step 1 as the cathode, the distance between the parallel cathode and anode is 2cm, the size of the cathode foam nickel is 22.9mm*10.0mm, put it into the above mixed electrolyte , connec...

Embodiment 2

[0029] Select aperture to be 110PPI, thickness is respectively 0.5mm, 1.0mm, the nickel foam of 1.5mm is research object, prepares foam Ni-CNTs composite material, other is the same as embodiment 1, carbon nanotube film thickness is 1Mm. The specific experimental steps are as follows:

[0030] (1) Clean the foamed nickel substrate: Soak three kinds of foamed nickel with a PPI of 110 and a thickness of 0.5mm, 1.0mm, and 1.5mm in a mixed solution of acetone and ethanol with a volume ratio of 1:1, ultrasonic cleaning for 30 minutes, and then Soak in 6mol / L HCl solution for 30 minutes to remove surface oxides, and finally wash with deionized water and dry;

[0031] (2) Modified carbon nanotubes: Weigh 45mg of multi-walled carbon nanotubes with a diameter of 20~30nm and 150mg of 60% dimethyldiallylammonium chloride aqueous solution, add 150ml of methanol to prepare carbon nanotubes with a concentration of 0.3mg / ml of electrolyte solution, ultrasonic at room temperature for 3h.

...

Embodiment 3

[0035]The specification PPI of two groups of nickel foams is selected to be 20, and the thickness is 1.5mm. The concentration of carbon nanotubes in the electrolyte is changed to 0.1mg / ml and 0.6mg / ml respectively, the voltage is 120V, and the electrophoresis time is 60min. Others are the same as in Example 1. The experimental steps are as follows:

[0036] (1) Clean the foamed nickel substrate: soak the foamed nickel with a PPI of 20 and a thickness of 1.5 mm in a mixed solution of acetone and ethanol with a volume ratio of 1:1, ultrasonically clean it for 30 minutes, and then soak it in a 6mol / L HCl solution Remove surface oxide for 30 minutes, finally wash with deionized water and dry;

[0037] (2) Modified carbon nanotubes: Weigh 15mg of multi-walled carbon nanotubes with a diameter of 20-30nm and 50mg of 60% dimethyldiallyl ammonium chloride aqueous solution, add 150ml of methanol to prepare carbon nanotubes with a concentration of 0.1mg / ml of electrolyte solution; anot...

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Abstract

The invention relates to a foam metal-carbon nano tube composite material and a preparation method thereof. The foam metal-carbon nano tube composite material comprises a foam metal base layer and a carbon nano tube film layer on the foam metal base layer, wherein the thickness of the carbon nano tube film layer is 0.1-10 nm. The preparation method of the foam metal-carbon nano tube composite material particularly comprises the following steps: cleaning the foam metal base layer; adding carbon nano tubes into an electrolyte and an organic solvent to obtain a mixed electrolyte, and performing ultrasonic treatment for 1-5 h; then taking a platinum electrode as an anode and foam metal as a cathode, and placing in the mixed electrolyte; switching on a DC power supply; depositing for 1-50 min under the voltage of 80-160 V; and taking out a cathode material, and drying to obtain the foam metal-carbon nano tube composite material, wherein the concentration of the electrolyte in the mixed electrolyte is 0.1-0.6 mg/ml; and the parallel space between the anode and cathode is 1-3 cm. The foam metal-carbon nano tube composite material has high electromagnetic shielding effectiveness and can serve as an electromagnetic shielding material.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a metal foam-carbon nanotube composite material and a preparation method thereof. Background technique [0002] Preventing interference and leakage caused by electromagnetic wave radiation has become an important issue today. Electromagnetic shielding is an effective means to resist electromagnetic interference and control electromagnetic pollution. Using structural and functional materials with electromagnetic shielding performance is one of the main solutions. [0003] Metal plate is one of the earliest electromagnetic shielding materials used. Its electromagnetic shielding efficiency is high, but because it is relatively bulky, it cannot breathe and dissipate heat, and its poor corrosion resistance limits its application range. Compared with metal plates, porous metal foam has lighter weight, higher specific surface area, and better thermal and electrical conductivity, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/02
Inventor 余兴华易秋珍钟建夫朱济群
Owner CHANGDE LYRUN MATERIAL
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