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Acid zinc-nickel alloy electroplating additive and electroplating solution

An electroplating additive and zinc-nickel alloy technology, applied in the field of electroplating, can solve the problems of increased energy consumption and production cost, difficulty in obtaining a zinc-nickel coating, poor plating ability of the plating solution, etc., so as to improve the leveling ability and gloss, improve The effect of pinhole pitting appearance, optimal flatness and gloss

Pending Publication Date: 2022-05-24
太仓鑫天健环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zinc-nickel alloy electroplating is divided into two systems: alkaline and acidic. Alkaline zinc-nickel alloy electroplating system, but the alkaline process system has always had problems such as low current efficiency, poor plating ability of the plating solution, high plating temperature, and long time. It has not been well solved; the current mainstream in the market is the acidic zinc-nickel electroplating system, which has the advantages of high current efficiency, good corrosion resistance of the coating, and easy operation at room temperature, but it is difficult to obtain the appearance without the coordination of additives. Flat, glossy zinc-nickel coating, so it is of great significance to develop zinc-nickel electroplating additives that can effectively improve the flatness and gloss of the coating
[0003] Patent CN 109609979 A proposes a multi-layer nickel electroplating additive to improve stability: its current density range is as high as 16-19mA / cm 2 , the plating temperature ranges from 50 to 60°C, and the plating time is 28 to 35 minutes. This plating condition significantly increases energy consumption and production costs in production, and at the same time, the production efficiency is also low.

Method used

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  • Acid zinc-nickel alloy electroplating additive and electroplating solution

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The configuration process of acid zinc-nickel alloy electroplating additives and electroplating solution is as follows:

[0038] (1) Add 500mL of pure water in a container with a volume of 1L and heat it in a water bath. When the temperature of the water rises to about 40°C, add 45g of zinc chloride, 110g of nickel chloride and 110g of potassium chloride in turn to fully stir to obtain a mixed solution. liquid A;

[0039] (2) 20.3g of 4-phenyl-3-butene-2-one, 9g of butynediol and 15.8g of o-benzosulfimide were successively added to the mixed solution A and stirred to be fully dissolved; Then add 7.5g of sodium benzoate, 15g of triethanolamine, 7.5g of sodium salicylate in sequence and mix well; finally, add 56mL of polyethylene polyamine, 49mL of sodium ethanesulfonate, and 35mL of PEG-600 in sequence, fully stir and dissolve to make it evenly mixed, to obtain mixed solution B;

[0040] (3) adding boric acid to adjust the pH value of the mixed solution B in the range ...

Embodiment 2

[0044] The configuration process of acid zinc-nickel alloy electroplating additives and electroplating solution is as follows:

[0045] (1) Add 500mL of pure water in a container with a volume of 1L and heat it in a water bath. When the temperature of the water rises to about 40°C, add 45g of zinc chloride, 100g of nickel chloride and 120g of potassium chloride in turn to fully stir to obtain a mixed solution. liquid A;

[0046] (2) successively add 20g of 4-phenyl-3-buten-2-one, 12.5g of butynediol, 17.5g of phthalimide to the mixed solution A and stir to fully dissolve it; Then add 12g of sodium benzoate, 18g of triethanolamine, 10g of sodium salicylate in sequence and mix well; finally add 53mL of polyethylene polyamine, 45mL of sodium ethanesulfonate, and 42mL of PEG-600 in sequence, fully stir and dissolve to make the mixture uniform, and obtain a mixed solution. liquid B;

[0047](3) adding boric acid to adjust the pH value of the mixed solution B in the range of 5.0-5...

Embodiment 3

[0051] The configuration process of acid zinc-nickel alloy electroplating additives and electroplating solution is as follows:

[0052] (1) Add 500mL of pure water in a container with a volume of 1L and heat it in a water bath. When the temperature of the water rises to about 40°C, add 40g of zinc chloride, 120g of nickel chloride and 100g of potassium chloride in turn to fully stir to obtain a mixed solution. liquid A;

[0053] (2) 22.5 g of 4-phenyl-3-buten-2-one, 11.3 g of butynediol, and 11.3 g of o-benzothiimide were sequentially added to the mixed solution A, and stirred to fully dissolve ; Then add 7.5g sodium benzoate, 11.3g triethanolamine, 6.3g sodium salicylate in turn and mix; finally add 58mL polyvinylpolyamine, 50mL sodium ethanesulfonate, 37mL PEG-600 in turn, fully stir and dissolve to make them mix uniform to obtain mixed solution B;

[0054] (3) adding boric acid to adjust the pH value of the mixed solution B in the range of 5.0-5.5, adding pure water to th...

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Abstract

The invention relates to an acidic zinc-nickel alloy electroplating additive and electroplating liquid, and belongs to the technical field of electroplating. The acidic zinc-nickel alloy electroplating additive comprises 30-65 g / L of a brightening agent, 20-45 g / L of a coordination agent and 140-165 mL / L of a surface wetting agent according to the concentration in an electroplating solution, the brightening agent is prepared from 4 phenyl-3-butene-2-ketone, butynediol and o-phenylmethyl sulfimide, and the brightening agent is prepared from 4 phenyl-3-butene-2-ketone, butynediol and o-phenylmethyl sulfimide; the coordination agent is prepared from sodium salicylate, triethanolamine and sodium benzoate; the surface wetting agent is prepared from polyethylene polyamine, sodium ethanesulfonate and polyethylene glycol. The electroplating additive is suitable for an acidic zinc-nickel alloy plating seed, the purpose of crystal refinement of a plating layer is achieved through the coordination effect of the brightening agent, the coordination agent and the surface wetting agent, the leveling capacity and glossiness of the plating layer are effectively improved, the appearance of the plating layer is remarkably improved, and the plating layer has better flatness and glossiness; and plating can be performed at room temperature, the plating time is short, energy can be effectively saved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to an acid zinc-nickel alloy electroplating additive and an electroplating solution. Background technique [0002] The progress of modern industry and science and technology has strongly promoted the rapid development of my country's real estate industry, military industry, infrastructure and other industries. With the continuous improvement of metal surface protection performance requirements, zinc-nickel alloy coatings have been widely used in many fields because of their excellent corrosion resistance, low hydrogen embrittlement and excellent decorative properties. Zinc-nickel alloy electroplating is divided into two systems: alkaline and acid. Alkaline zinc-nickel alloy electroplating system, but the alkaline process system has always existed problems such as low current efficiency, poor plating ability of the plating solution, high plating temperature, and long time. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D5/00
CPCC25D3/565C25D3/562C25D5/611C25D5/617C25D5/627Y02P10/20
Inventor 范奇行刘永强
Owner 太仓鑫天健环保科技有限公司
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