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Bright black nickel electroplating solution and preparation method thereof, electroplating parts and bright black nickel electroplating method

A technology of electroplating solution and electroplating parts, applied in electroplating parts and bright black nickel electroplating, bright black nickel electroplating solution and its preparation field, can solve the problems affecting the brightness and decorative performance or conductivity of the coating, staining and sweat stains, etc. Achieve the effect of improving density and brightness, high plating temperature, and easy regulation

Active Publication Date: 2020-12-22
东莞奕创表面处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These coatings are inevitably in contact with the atmospheric environment and the human body during use. They will inevitably be stained with sweat, absorb moisture and polluted gases, etc., which will inevitably affect the brightness, decorative performance or electrical conductivity of the coating.

Method used

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  • Bright black nickel electroplating solution and preparation method thereof, electroplating parts and bright black nickel electroplating method
  • Bright black nickel electroplating solution and preparation method thereof, electroplating parts and bright black nickel electroplating method
  • Bright black nickel electroplating solution and preparation method thereof, electroplating parts and bright black nickel electroplating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A preparation method of bright black nickel electroplating solution, the steps are:

[0064] In the first step, dissolve 5g of chitosan with nickel in 1L of a solution of 10mL / L sodium acetate (additive A, the same below, omitted) and heat at 35°C; in the second step, add 105g of nickel sulfate and nickel chloride in sequence 15g, magnesium sulfate 3g, copper sulfate 2g, ammonium thiocyanate 55g, stir until nickel salt, magnesium salt, copper salt and ammonium salt are completely dissolved; the third step, add water-soluble chitosan (additive B, the same below, omitted) 55g, stir until chitosan is completely dissolved; the 4th step, add the hexamethylenediamine of 65g equimolar ratio, butylenediamine mixture (additive C, hereinafter the same, abbreviated), 1g sodium sulfide (additive D, hereinafter the same, Slightly), continue to stir until the two dissolve completely, the solution becomes transparent or translucent, and cool to room temperature to obtain a bright blac...

Embodiment 2

[0067] A preparation method of bright black nickel electroplating solution, the steps are:

[0068] In the first step, dissolve 15g of chitosan and nickel in 1L of sodium acetate solution with a concentration of 25mL / L, and heat at 45°C; in the second step, add 85g of nickel sulfate, 25g of nickel chloride, 2g of magnesium sulfate, and 2g of copper sulfate in sequence , ammonium thiocyanate 35g, stir until the nickel salt, magnesium salt, copper salt and ammonium salt are completely dissolved; the third step, add 45g of water-soluble chitosan, stir until the chitosan is completely dissolved; the fourth step, add etc. 55g of pentamethylenediamine, butylenediamine, and 2g of ammonium sulfide molarly mixed, continue to stir until the two are completely dissolved, and the solution becomes transparent or translucent, and cooled to room temperature to obtain a bright black nickel electroplating solution.

[0069] According to the conventional continuous electroplating process, the c...

Embodiment 3

[0071] A preparation method of bright black nickel electroplating solution, the steps are:

[0072] In the first step, dissolve 25g of chitosan with nickel in 1L of disodium hydrogen phosphate solution with a concentration of 35mL / L, and heat at 55°C; in the second step, add 65g of nickel sulfate, 15g of nickel chloride, 1g of magnesium sulfate, sulfuric acid Copper 10g, ammonium thiocyanate 25g, stir until the nickel salt, magnesium salt, copper salt and ammonium salt are completely dissolved; the third step, add 25g of water-soluble chitosan, stir until the chitosan is completely dissolved; the fourth step, respectively Add 40g of ethylenediamine, butylenediamine mixture, and 3g of ammonium sulfide mixed in equal moles, and continue to stir until the two are completely dissolved, and the solution becomes transparent or translucent. After cooling to room temperature, a bright black nickel electroplating solution is obtained.

[0073] According to the conventional continuous e...

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Abstract

The invention belongs to the technical field of electroplating, and particularly relates to a bright black nickel electroplating solution, a preparation method thereof, an electroplated part and an electroplating method of bright black nickel. The bright black nickel electroplating solution preparation method comprises the following steps that 1) under the condition that the temperature is 35-55 DEG C, every 5-25g of chitosan nickel complexes is dissolved in 1L of an additive A solution with the concentration of 10-45g / L; 2) 25-105g of nickel sulfates, 15-75g of nickel chlorides, 1-3g of magnesium sulfates, 2-10g of copper sulfates and 10-55g of ammonium thiocyanates are added into the solution sequentially and stirred until all the salts are completely dissolved; 3) 25-55g of additives Bare added and stirred until the additives B are completely dissolved; and 4) 20-65g of additives C and 1-6g of additives D are further added and stirred until the additives C and the additives D are completely dissolved, and the solution becomes a transparent or semitransparent solution and then is cooled to the room temperature. A bright black nickel coating prepared with the bright black nickelelectroplating solution has the advantages of being bright, compact, wear-resistant, corrosion-resistant, good in electrical conductivity and the like; and a coating crystal structure is uniform in grain size, stable in chemical composition and capable of being regulated and controlled.

Description

technical field [0001] The invention belongs to the technical field of electroplating, and in particular relates to a bright black nickel electroplating solution, a preparation method thereof, an electroplating piece and a bright black nickel electroplating method. Background technique [0002] The black nickel coating is simple and elegant, and has excellent heat absorption, heat dissipation, extinction and decoration functions (see literature [1] HPb59-lead brass electroplating black nickel process [J]. Electroplating and Finishing, 2018, 40(1) :40-46.), as a high-efficiency light-absorbing material, it has multiple uses, such as in optical equipment, light-absorbing materials, aerospace, and defense industries, etc. (see literature [2] Optical and Structural Properties of Carbon Nanotubes / BlackNickel Composite Coatings by Electrodeposition [J]. J. Inorganic Materials, 2016, 31(12): 1370-1374.). Black nickel coating is also widely used in decoration and protective film, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/12
CPCC25D3/12
Inventor 张文博郑月强赵双琪周环波
Owner 东莞奕创表面处理科技有限公司
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