CN103950234A - Foamed nickel with surface encapsulation layer and preparation method of foamed nickel - Google Patents
Foamed nickel with surface encapsulation layer and preparation method of foamed nickel Download PDFInfo
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- CN103950234A CN103950234A CN201410151211.5A CN201410151211A CN103950234A CN 103950234 A CN103950234 A CN 103950234A CN 201410151211 A CN201410151211 A CN 201410151211A CN 103950234 A CN103950234 A CN 103950234A
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- nickel
- foam
- carbon foam
- carbon
- foamed nickel
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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
The present invention relates to a kind of foamed material and preparation method thereof, particularly relate to a kind of nickel foam with surface encapsulation layer and preparation method thereof.
Background technology
Foam metal is a kind of novel engineering material, because itself has the tridimensional network of porous, specific surface is large, intensity and good toughness, at shock damper, filter, heating and heat exchanger, have wide practical use at aspects such as chemical industry, environmental protection treatment waste water engineerings.In electrochemical industry, be used as more and more electrode matrix and the electrolysis electrode of high-capacity secondary battery.Foam metal be prepared with several different methods as methods such as casting method, electrodeposition process, powder deposition method, sputtering sedimentations.By comparison, the foam metal matrix that prepared by electrodeposition process is light, porosity is high, toughness is better.
Nickel foam is the most a kind of as development and application in foam metal, has the performance such as sound deadening shock absorption and heat-resisting oxidation-resistance of high osmosis, excellence.At present, nickel foam is widely used in the substrate of the high-efficiency batteries such as secondary Cd-Ni, Ni-H, as carrier and the current collector body of filling active material, is the main raw material(s) of preparing battery.There are some researches show, sintering one deck nickel powder equably on nickel foam skeleton, long-pending with enlarged surface, the electrode gas-liquid separation of gained N i-Cd battery is good, overvoltage is low, and efficiency can improve 90%.
Publication number is the preparation method that the Chinese invention patent of 102191395A discloses extensive farming nickel foam or foamed nickel-cobalt alloy.This invention is dissolved in nickel salt or nickel salt and cobalt salt in ethylene glycol solvent, to form colloidal sol, after fully stirring, baking obtains gel, again obtained gel is carried out in air to sintering and make gel spontaneous combustion, fully after burning, obtain foamed metal nickel or foam-like nickel cobalt (alloy).The present invention has preparation technology simple, the gas that do not need protection when sintering, and the advantage that preparation cost is low, but also can, by changing the concentration of solute in colloidal sol, control easily the specific area of gained foam metal.
Publication number is the atmospheric preparation method that the Chinese invention patent of 102530916A relates to a kind of coal-based carbon foam material.This characteristic feature of an invention is: do not need to use the pressure expansion equipment such as autoclave, do not need blowing agent foaming, also need to before carbonization, not carry out oxidation-stabilized processing to nascent carbon foam, adopt the method for mechanical compaction to realize the preparation of normal pressure coal-based carbon foam, Preparation equipment is simple.Also the structure to carbon foam and performance regulate easily in the present invention.
Summary of the invention
Perforated foams is because its large porosity and specific area have obtained a large amount of application in engineering application, but also occurred foam hole especially open-celled structure easily in use mix impurity and block, reduce the problem of functional material serviceability.
The present invention is intended to overcome especially foam nickel material pore doping problem in use of perforated foams, and a kind of nickel foam with surface encapsulation layer and preparation method thereof is provided.Described nickel foam is made up of the carbon foam substrate of conducting electricity, carbon foam surface nickel coating and surface encapsulation layer.Wherein, carbon foam substrate is to heat carbonization by polyurethane foam to obtain, and has open-celled structure, and the length-width ratio in hole is 0.8～2.0.Carbon foam surface nickel coating is to obtain by alternating-current pulse electric plating method, and thickness is 0.5～5 μ m.Surface encapsulation layer is made up of fine and close pure nickel superficial layer, and thickness is 0.5～5mm.
In the present invention, nickel foam inside presents three-dimensional net structure, is cross-linked and is formed by irregular holes not of uniform size, has large specific area, can fill phase transformation, inhale the multiple materials such as ripple.This material, taking carbon foam as substrate, utilizes the surface texture of the complete succession carbon of plated metal nickel dam foam, and nickel coating had both effectively been protected material with carbon element, has formed in appearance again a kind of new foam nickel material.Meanwhile, utilizing fine and close pure nickel overlay coating effectively to encapsulate foam base plate,, in conjunction with the excellent specific property of metal material and material with carbon element, is fully a kind of high-performance perforated foams with broad development prospect.
Carbon foam substrate of the present invention is to heat carbonization by polyurethane foam to obtain, and concrete technical process is carried out in two steps: first in air, polyurethane foam is heated at 180～260 DEG C; Then in inert atmosphere, carbonization at 700～900 DEG C.
Carbon foam surface nickel coating of the present invention is to obtain by electric plating method, taking the carbon foam that makes as negative electrode and substrate, 99.99% pure nickel target is anode, nickelous sulfate is main salt, it is characterized in that power supply is alternating-current pulse electricity, and carbon foam substrate is fully flooded in plating solution to 10～30min before electroplating.
Surface encapsulation layer in the present invention is the superficial layer of pure nickel, provides higher current density by D.C. regulated power supply, fast deposition in the plating solution of high concentration and obtain fine and close nickel surface layer.
The invention provides a kind of preparation method of the nickel foam with surface encapsulation layer, it is characterized in that comprising the step of following order:
(1) heating, carbonization polyurethane foam are prepared carbon foam;
(2) the carbon foam making is cleaned up, in plating solution, fully flood, wherein electroplate liquid formulation is: Niso
47H
2o (250～300g/1); Nicl
26H
2o (30～60g/1); H
3bo
3(35～40g/1); Lauryl sodium sulfate (0.05～0.10g/1):
(3) taking carbon foam as negative electrode, pure nickel target is anode, connects alternating current pulse, nickel deposited coating in carbon foam substrate, and controlling thickness of coating is 0.5～5 μ m, obtains foam nickel material;
(4) above-mentioned nickel foam is put into the electroplate liquid of higher concentration, that is: Niso
47H
2o (280～300g/l); Nicl
26H
2o (40～60g/1); H
3bo
3(35～40g/1); Lauryl sodium sulfate (0.05～0.10g/l); And taking it as negative electrode, pure nickel target is anode, connect D.C. regulated power supply, adding high current density is 2～2.5A/dm
2, at the fine and close nickel dam of nickel foam surface fast deposition 0.5～5mm;
(5) negative electrode nickel foam is taken out, clean and dry with distilled water flushing.
Major advantage of the present invention is: the foam nickel material 1. making has the excellent properties of material with carbon element and metallic nickel concurrently, and inside presents the foaming structure of porous, has advantages of that quality is light, specific area is large; 2. fine and close pure nickel overlay coating effectively encapsulates foam base plate, has avoided foamed material pore doping problem in use, ensures the use safety of engineering material, increases the service life; 3. in foam, can fill several functions material, effectively improve reaction rate and effect, as filled PCM phase-change material, enter foam when height is warm by top layer, foam is because of large specific area, and the PCM filling wherein can absorb heat fast; 4. adopt the preparation method who electroplates, technique is simple, easy and simple to handle, with low cost.
Brief description of the drawings
Fig. 1 is a kind of nickel foam schematic diagram with surface encapsulation layer.
Diagram 10 is pure nickel compact surfaces encapsulated layer; 20 is the nickel foam taking carbon foam as substrate.
Fig. 2 is the nickel foam schematic diagram of filling PCM phase-change material.
Diagram 11 is pure nickel compact surfaces encapsulated layer; 12 for filling the nickel foam of PCM phase-change material.
Detailed description of the invention
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims to the amendment of the various equivalent form of values of the present invention and limit.
Embodiment 1
(1) prepare carbon foam: first in air, polyurethane foam is heated at 200 DEG C; Then in inert atmosphere, carbonization at 900 DEG C; Thereby prepare carbon foam.
(2) nickel deposited on carbon foam: the carbon foam making is cleaned up, fully flood 10min in plating solution; Electroplate liquid formulation is: Niso
47H
2o250g/l; Nicl
26H
2o40g/l; H
3bo
335g/l; Lauryl sodium sulfate 0.05g/l; Taking the carbon foam that makes as negative electrode, 99.99% pure nickel is anode, by alternating current pulse, deposits the nickel coating of 2 μ m at carbon foam surface, obtains foam nickel material.
(3) preparation of pure dense nickel surface encapsulated layer: above-mentioned nickel foam is put into the electroplate liquid of higher concentration, that is: Niso
47H
2o280g/l; Nicl
26H
2o50g/l; H
3bo
340g/l; Lauryl sodium sulfate 0.07g/l; Taking nickel foam as negative electrode, pure nickel target is anode, connects D.C. regulated power supply, adds high current density, and at the fine and close nickel dam of nickel foam surface fast deposition, control thickness is lmm.
(4) negative electrode nickel foam is taken out, clean and dry with distilled water flushing, obtain a kind of nickel foam with surface encapsulation layer.
The nickel foam material that said method makes, is made up of the carbon foam substrate of conducting electricity, carbon foam surface nickel coating and pure dense nickel surface encapsulated layer.Material internal presents three-dimensional net structure, is cross-linked and is formed by irregular perforate not of uniform size.
Embodiment 2
(1) prepare carbon foam: first in air, at 250 DEG C by polyurethane foam heating, then in inert atmosphere, carbonization at 800 DEG C, thereby prepare carbon foam.
(2) nickel deposited on carbon foam: the carbon foam making is cleaned up, fully flood 30min in plating solution; Electroplate liquid formulation is: Niso
47H
2o260g/l; Nicl
26H
2o45g/l; H
3bo
335g/1; Lauryl sodium sulfate 0.05g/l; Taking the carbon foam that makes as negative electrode, 99.99% pure nickel is anode, by alternating current pulse, deposits the nickel coating of 2 μ m at carbon foam surface, obtains foam nickel material.
(3) preparation of pure dense nickel surface encapsulated layer: above-mentioned nickel foam is put into the electroplate liquid of higher concentration, that is: Niso
47H
2o300g/l; Nicl
26H
2o50g/l; H
3bo
340g/l; Lauryl sodium sulfate 0.07g/l; Taking nickel foam as negative electrode, pure nickel target is anode, connects D.C. regulated power supply, adds high current density, and at the fine and close nickel dam of nickel foam surface fast deposition, control thickness is 3mm.
(4) negative electrode nickel foam is taken out, clean and dry with distilled water flushing, obtain a kind of foam nickel material with surface encapsulation layer.
The nickel foam material that said method makes, is made up of the carbon foam substrate of conducting electricity, carbon foam surface nickel coating and pure dense nickel surface encapsulated layer.Material internal presents three-dimensional net structure, is cross-linked and is formed by irregular perforate not of uniform size.
Above are only two detailed description of the invention of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading the scope of protection of the invention.In every case be the content that does not depart from technical solution of the present invention, any type of simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (9)
1. with a nickel foam for surface encapsulation layer, it is characterized in that being formed by the carbon foam substrate of conducting electricity, carbon foam surface nickel coating and surface encapsulation layer.
2. nickel foam according to claim 1, is characterized in that material internal presents three-dimensional net structure, is cross-linked and is formed by irregular holes not of uniform size, has large specific area, can fill phase transformation, inhale the multiple materials such as ripple.
3. nickel foam according to claim 1, its feature has open-celled structure in the carbon foam substrate described in hand, and the length-width ratio in hole is 0.8～2.0.
4. nickel foam according to claim 1, is characterized in that the thickness of described carbon foam surface nickel coating is 0.5～5 μ m.
5. nickel foam according to claim 1, is characterized in that surface encapsulation layer is made up of fine and close pure nickel superficial layer, and thickness is 0.5～5mm.
6. with a preparation method for the nickel foam of surface encapsulation layer, it is characterized in that comprising the step of following order:
(1) heating, carbonization polyurethane foam are prepared carbon foam;
(2) the carbon foam making is cleaned up, in plating solution, fully flood 10～30min; Wherein electroplate liquid formulation is: Niso
47H
2o (250～300g/1); Nicl
26H
2o (30～60g/1); H
3bo
3(35～40g/1); Lauryl sodium sulfate (0.05～0.10g/1);
(3) taking carbon foam as negative electrode, pure nickel target is anode, connects alternating current pulse, nickel deposited coating in carbon foam substrate, and controlling thickness of coating is 0.5～5 μ m, obtains foam nickel material;
(4) above-mentioned nickel foam is put into the electroplate liquid of higher concentration, that is: Niso
47H
2o (280～300g/1); Nicl
26H
2o (40～60g/1); H
3bo
3(35～40g/1); Lauryl sodium sulfate (0.05～0.10g/1); And taking it as negative electrode, pure nickel target is anode, connect D.C. regulated power supply, adding high current density is 2～2.5A/dm
2, at the fine and close nickel dam of nickel foam surface fast deposition 0.5～5mm;
(5) negative electrode nickel foam is taken out, clean and dry with distilled water flushing.
7. preparation method according to claim 6, is characterized in that carbon foam substrate heats carbonization by polyurethane foam and obtains, and preparation technology carries out in two steps: first in air, polyurethane foam is heated at 180～260 DEG C; Then in inert atmosphere, carbonization at 700～900 DEG C.
8. preparation method according to claim 6, the power supply that it is characterized in that carbon foam surface nickel coating is alternating-current pulse electricity, and carbon foam substrate is fully flooded in plating solution to 10～30min before electroplating, taking carbon foam as negative electrode with substrate, 99.99% pure nickel target is anode, and nickelous sulfate is main salt.
9. preparation method according to claim 6, is characterized in that surface encapsulation layer is to provide higher current density by D.C. regulated power supply, fast deposition in the plating solution of high concentration and obtain pure dense nickel dam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151211.5A CN103950234A (en) | 2013-08-02 | 2014-04-15 | Foamed nickel with surface encapsulation layer and preparation method of foamed nickel |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332581.4 | 2013-08-02 | ||
| CN201310332581 | 2013-08-02 | ||
| CN201410151211.5A CN103950234A (en) | 2013-08-02 | 2014-04-15 | Foamed nickel with surface encapsulation layer and preparation method of foamed nickel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103950234A true CN103950234A (en) | 2014-07-30 |
Family
ID=51327653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410151211.5A Pending CN103950234A (en) | 2013-08-02 | 2014-04-15 | Foamed nickel with surface encapsulation layer and preparation method of foamed nickel |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694989A (en) * | 2015-03-12 | 2015-06-10 | 上海理工大学 | Preparation method of graphene-base metal composite material |
| CN110512246A (en) * | 2019-09-29 | 2019-11-29 | 太仓陶氏电气有限公司 | A kind of preparation process of the foam metal for cooling electronic component system |
| CN110591656A (en) * | 2019-10-15 | 2019-12-20 | 中国科学技术大学先进技术研究院 | Composite phase change material for heating non-combustion type tobacco heat source and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2577073B2 (en) * | 1988-12-22 | 1997-01-29 | 株式会社アイジー技術研究所 | Fire protection, insulation panels |
| CN101104893A (en) * | 2006-07-14 | 2008-01-16 | 中国科学院金属研究所 | Metal/carbonyl composite foaming material and preparation method thereof |
| CN103101246A (en) * | 2013-02-26 | 2013-05-15 | 赵骁 | Foamy carbon/metal-based photothermal composite material and preparation method thereof |
-
2014
- 2014-04-15 CN CN201410151211.5A patent/CN103950234A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2577073B2 (en) * | 1988-12-22 | 1997-01-29 | 株式会社アイジー技術研究所 | Fire protection, insulation panels |
| CN101104893A (en) * | 2006-07-14 | 2008-01-16 | 中国科学院金属研究所 | Metal/carbonyl composite foaming material and preparation method thereof |
| CN103101246A (en) * | 2013-02-26 | 2013-05-15 | 赵骁 | Foamy carbon/metal-based photothermal composite material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694989A (en) * | 2015-03-12 | 2015-06-10 | 上海理工大学 | Preparation method of graphene-base metal composite material |
| CN104694989B (en) * | 2015-03-12 | 2017-04-05 | 上海理工大学 | A kind of preparation method of graphene-based metallic composite |
| CN110512246A (en) * | 2019-09-29 | 2019-11-29 | 太仓陶氏电气有限公司 | A kind of preparation process of the foam metal for cooling electronic component system |
| CN110512246B (en) * | 2019-09-29 | 2020-11-03 | 太仓陶氏电气有限公司 | Preparation process of foam metal for electronic component heat dissipation system |
| CN110591656A (en) * | 2019-10-15 | 2019-12-20 | 中国科学技术大学先进技术研究院 | Composite phase change material for heating non-combustion type tobacco heat source and preparation method thereof |
| CN110591656B (en) * | 2019-10-15 | 2021-05-28 | 中国科学技术大学先进技术研究院 | Composite phase change material for heating non-combustion type tobacco heat source and preparation method thereof |
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Application publication date: 20140730 |