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Nickel electroplating liquid, and preparation method for super-hydrophobic nickel plating layer using same

A technology for nickel electroplating solution and mixed solution is applied in the field of nickel electroplating solution and preparation of super-hydrophobic nickel coating, which can solve problems such as injury to environmental operators, and achieve the effects of being environmentally friendly, convenient for preparation, and simple and controllable in process.

Inactive Publication Date: 2011-09-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are still some difficulties in obtaining superhydrophobic properties by one-step electrodeposition on pure metal surfaces; , thus causing harm to the environment and operators

Method used

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  • Nickel electroplating liquid, and preparation method for super-hydrophobic nickel plating layer using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Choline chloride (purchased from Aladdin Reagent (Shanghai) Co., Ltd.) and ethylene glycol were stirred and mixed at a molar ratio of 1:2 at 75° C. to obtain a choline chloride-based ionic liquid. 5 g NiCl 2 ·6H 2 O was dissolved in 40ml of choline chloride-based ionic liquid to obtain nickel electroplating solution.

[0020] Electrolytic nickel is used as the anode, and the brass sheet is used as the cathode, and electroplating is carried out in the nickel electroplating solution prepared above, the plating voltage is 1V, the temperature of the nickel electroplating solution is 90°C, and the electroplating time is 1 hour. After the electroplating is completed, use methanol Wash the coating with water and dry it in turn.

[0021] The thickness of the nickel plating layer prepared above is about 5 μm. The scanning electron micrographs show that the surface of the nickel coating is composed of nanoscale nickel flakes, and the scanning electron micrographs are as follow...

Embodiment 2

[0024] Choline chloride (purchased from Aladdin Reagent (Shanghai) Co., Ltd.) and propylene glycol were stirred and mixed at a molar ratio of 1:2 at 75° C. to obtain a choline chloride-based ionic liquid. 2.0 g NiCl 2 Dissolve in 40ml of choline chloride-based ionic liquid to obtain nickel electroplating solution.

[0025] Electrolytic nickel is used as the anode, and the brass sheet is used as the cathode. Electroplating is carried out in the nickel electroplating solution prepared above, and the electrodeposition is carried out in a pulse deposition mode. The plating voltage is 1V, and the pulse frequency is not required. The temperature of the nickel electroplating solution is 60 ℃, the electroplating time is 1 hour, and after the electroplating is completed, the coating layer is cleaned and dried with methanol and water in sequence.

[0026] The thickness of the nickel plating layer prepared above is about 2 μm. The contact angle and rolling angle of the nickel coating s...

Embodiment 3

[0028] Choline chloride (purchased from Aladdin Reagent (Shanghai) Co., Ltd.) and urea were stirred and mixed at a molar ratio of 1:2 at 75° C. to obtain a choline chloride-based ionic liquid. 13 g NiCl 2 ·6H 2 O was dissolved in 40ml of choline chloride-based ionic liquid to obtain nickel electroplating solution.

[0029] Electrolytic nickel is used as the anode, and the brass sheet is used as the cathode. Electroplating is carried out in the nickel electroplating solution prepared above, and a DC power supply is used for electrodeposition. The plating voltage is 0.5V, and the pulse frequency is not required. The temperature of the nickel electroplating solution is 100 ℃, the electroplating time is 1 hour, and after the electroplating is completed, the coating layer is cleaned and dried with methanol and water in sequence.

[0030] The thickness of the nickel plating layer prepared above is about 12 μm. Measurements of the contact angle and rolling angle on the surface of ...

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Abstract

The invention discloses a nickel electroplating liquid, and a preparation method for a super-hydrophobic nickel plating layer using the same. The nickel electroplating liquid is composed of a choline-chloride-based ionic liquid used as a solvent and NiCl2.6H2O or NiCl2 used as a solute, wherein the mol concentration of the solute is 0.1-3 mol / L. The preparation method for the super-hydrophobic nickel plating layer using the nickel electroplating liquid comprises the following step of electroplating in the nickel electroplating liquid with pure nickel as an anode and the workpiece to be electroplated as a cathode at the temperature of the nickel electroplating liquid from room temperature to 200 DEG C and electroplating voltage of 0.2-2 V. The nickel electroplating liquid provided by the invention has simple components, is convenient to prepare and is environmentally-friendly. The preparation method for the super-hydrophobic nickel plating layer using the nickel electroplating liquid has the advantages of simple and controllable process, no corrosive substances and no vapor discharge during the electroplating process, and is beneficial to mass production. More prominent characteristics are that the obtained nickel plating layer has super-hydrophobic property, a contact angle larger than 160 degrees and a sliding angle smaller than 2 degrees.

Description

technical field [0001] The invention belongs to the field of electrodeposition preparation of metal coatings, in particular to a nickel electroplating solution and a method for preparing a superhydrophobic nickel coating using the nickel electroplating solution. Background technique [0002] Superhydrophobic (hydrophobic) surfaces generally refer to surfaces with a contact angle with water greater than 150 degrees, and have a wide range of potential applications in the fields of material surface anticorrosion, anti-icing, hull drag reduction, and microfluidics. Pure metal surfaces generally exhibit hydrophilic properties. If the metal surface is to obtain super-hydrophobic properties, a two-step process is usually used: first, the metal surface must be roughened, and then covered with low surface energy substances. The two-step process is cumbersome and time-consuming, and the stability of the prepared superhydrophobic surface is poor, which brings difficulties to the wide a...

Claims

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Application Information

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IPC IPC(8): C25D3/12
Inventor 谷长栋涂江平
Owner ZHEJIANG UNIV
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