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Foamed nickel with surface encapsulation layer and preparation method of foamed nickel

A surface encapsulation, nickel foam technology, applied in chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of reducing the performance of functional materials, blocking the open cell structure of foam pores, etc., to improve the reaction rate and effect, light weight, effect of avoiding porosity doping problems

Inactive Publication Date: 2014-07-30
TAICANG PAIOU TECH CONSULTING SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Porous foam materials have been widely used in engineering applications due to their large porosity and specific surface area, but there are also problems that the foam pores, especially the open-cell structure, are easily blocked by impurities during use and reduce the performance of functional materials.

Method used

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  • Foamed nickel with surface encapsulation layer and preparation method of foamed nickel
  • Foamed nickel with surface encapsulation layer and preparation method of foamed nickel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Preparation of carbon foam: first heat the polyurethane foam in the air at 200° C.; then carbonize it in an inert atmosphere at 900° C.; thereby preparing the carbon foam.

[0026] (2) Deposit nickel on the carbon foam: clean the prepared carbon foam and fully immerse it in the plating solution for 10 minutes; the plating solution formula is: Niso 4 ·7H 2 o250g / l; Nicl 2 ·6H 2 o40g / l;H 3 Bo 3 35g / l; Sodium lauryl sulfate 0.05g / l; With the prepared carbon foam as the cathode and 99.99% pure nickel as the anode, a nickel coating of 2 μm is deposited on the surface of the carbon foam by alternating current pulses to obtain a foamed nickel material .

[0027] (3) Preparation of dense pure nickel surface encapsulation layer: put the above nickel foam into a higher concentration electroplating solution, namely: Niso 4 ·7H 2 o280g / l; Nicl 2 ·6H 2 o50g / l;H 3 Bo 3 40g / l; Sodium lauryl sulfate 0.07g / l; With nickel foam as the cathode and pure nickel target as the a...

Embodiment 2

[0031] (1) Preparation of carbon foam: the polyurethane foam was first heated in air at 250° C., and then carbonized in an inert atmosphere at 800° C. to prepare carbon foam.

[0032] (2) Deposit nickel on the carbon foam: clean the prepared carbon foam and fully immerse it in the plating solution for 30min; the plating solution formula is: Niso 4 ·7H 2 o260g / l; Nicl 2 ·6H 2 o45g / l;H 3 Bo 3 35g / l; Sodium lauryl sulfate 0.05g / l; With the prepared carbon foam as the cathode and 99.99% pure nickel as the anode, a nickel coating of 2 μm is deposited on the surface of the carbon foam by alternating current pulses to obtain a nickel foam material .

[0033] (3) Preparation of dense pure nickel surface encapsulation layer: put the above nickel foam into a higher concentration electroplating solution, namely: Niso 4 ·7H 2 o300g / l; Nicl 2 ·6H 2 o50g / l;H 3 Bo 340g / l; Sodium lauryl sulfate 0.07g / l; With nickel foam as the cathode and pure nickel target as the anode, turn on th...

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Abstract

The invention discloses foamed nickel with a surface encapsulation layer. The foamed nickel is characterized by comprising a conductive carbon foam base, a carbon foam surface nickel-plated layer and the surface encapsulation layer. A three-dimensional structure is arranged in a material and formed by alternatively connecting irregular holes with different sizes; the three-dimensional structure is large in specific surface area and can be filled with a plurality of materials such as phase change materials and wave absorbing materials. The preparation method of the foamed nickel comprises the following sequential steps: preparing carbon foams and fully dipping the carbon foams in a plating solution; switching on alternating current pulse by taking the carbon foam as a negative electrode and taking a pure nickel target as a positive electrode, and depositing the nickel-plated layer on the carbon foam base; then putting the carbon foams into an electric plating solution with the relatively high concentration, switching on a direct-current voltage-regulated power supply, increasing the current density and quickly depositing a compact nickel layer on the surface of the foamed nickel; taking out the foamed nickel, washing the foamed nickel by using distilled water and drying the foamed nickel. The impact nickel-plated layer is arranged on the surface of the foamed nickel, so that the air hole doping problems of the foamed materials in the using process is avoided, the use safety of engineering materials is guaranteed and the service life is prolonged.

Description

technical field [0001] The invention relates to a foam material and a preparation method thereof, in particular to a foam nickel with a surface encapsulation layer and a preparation method thereof. Background technique [0002] Metal foam is a new type of engineering material. Because it has a porous three-dimensional network structure, it has a large specific surface, good strength and toughness. It is used in shock absorbers, filters, heating and heat exchangers, and in chemical and environmental protection. Wastewater engineering and other aspects have broad application prospects. In the electrochemical industry, it is increasingly used as an electrode substrate and electrolytic electrode for high-capacity secondary batteries. There are many methods for the preparation of metal foam, such as casting method, electrodeposition method, powder deposition method, sputtering deposition and other methods. In comparison, the metal foam matrix prepared by electrodeposition is li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/18B32B15/04C25D1/08C25D3/12C25D5/54
Inventor 陈照峰聂丽丽
Owner TAICANG PAIOU TECH CONSULTING SERVICE