Alkaline cyanide-free electroplating zinc-nickel alloy additive and electroplating liquid

A technology of electro-galvanized nickel and additives, applied in the field of electro-galvanized nickel alloy, can solve the problems of poor coating gloss, poor corrosion resistance and the like

Inactive Publication Date: 2020-02-07
佛山市南海高益美环保实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an alkaline cyanide-free electroplating zinc-nickel alloy additive and electroplating solution for the technical problems of poor coating gloss and poor corrosion resistance.

Method used

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  • Alkaline cyanide-free electroplating zinc-nickel alloy additive and electroplating liquid
  • Alkaline cyanide-free electroplating zinc-nickel alloy additive and electroplating liquid
  • Alkaline cyanide-free electroplating zinc-nickel alloy additive and electroplating liquid

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Embodiment 1

[0022] The invention provides an alkaline cyanide-free electroplating zinc-nickel alloy additive. The alkaline cyanide-free electroplating zinc-nickel alloy additive includes the following components in parts by mass: 50 parts of complexing agent, the complexing agent includes hydroxycarboxylic acid, amine and polyamine compounds, specifically, the complexing agent includes 12 parts of α-aminobutyric acid of 20g / L, 16 parts of diethanolamine of 120g / L, and N,N,N',N' of 160 / L - 15 parts of tetrahydroxyethylethylenediamine and 17 parts of derivatives of triethylenetetramine of 160 / L; 4 parts of brightening agent, brightening agent includes brightening main agent, nonionic surfactant and whitening agent, specifically, The brightener includes 1 part of diethoxybutynediol ether of 10g / L, 1 part of the reactant of triethylenetetramine and epichlorohydrin of 100g / L, 0.3 part of aromatic aldehyde of 50g / L, 20g / L 0.9 part of nicotinic acid derivative of L and 0.8 part of coumarin of 10...

Embodiment 2

[0040] The invention provides an alkaline cyanide-free electroplating zinc-nickel alloy additive. The alkaline cyanide-free electroplating zinc-nickel alloy additive comprises the following components in parts by mass: 60 parts of complexing agent, the complexing agent includes hydroxycarboxylic acid, amine and polyamine compounds, specifically, the complexing agent includes 14 parts of tartaric acid of 30g / L, 18 parts of triethanolamine of 150g / L, 17 parts of polybutenylamine of 220g / L and 170g / L of ethylene glycol 21 parts of amine; 5 parts of brightening agent, brightening agent comprises bright main agent, nonionic surfactant and whitening agent, concrete, this brightening agent comprises 1.5 parts of propanesulfonic acid pyridinium salts of 20g / L, 110g / L 1.2 parts of reactants of diethylenetriamine and epichlorohydrin, 0.3 parts of 65g / L aromatic aldehyde, 1.2 parts of 30g / L nicotinic acid derivatives and 0.8 parts of 15g / L triethanolamine; 15 parts of nickel supplement ,...

Embodiment 3

[0051] The invention provides an alkaline cyanide-free electroplating zinc-nickel alloy additive. The alkaline cyanide-free electroplating zinc-nickel alloy additive comprises the following components in parts by mass: 70 parts of complexing agent, the complexing agent includes hydroxycarboxylic acid, amine Classes and polyamine compounds, specifically, the complexing agent includes 16 parts of citric acid of 40g / L, 20 parts of tetraethylenepentamine of 220g / L, 20 parts of polypropyleneamine of 260g / L and 20 parts of polyacrylamine of 260g / L 24 parts of hexamethylenetetramine; 6 parts of brightening agent, brightening agent includes brightening main agent, nonionic surfactant and whitening agent, specifically, this brightening agent comprises the N-phenyl-3-carboxylate of 30g / L 2 parts of pyridine chloride, 1.5 parts of the reaction product of 120g / L sodium propargyl sulfonate and epichlorohydrin, 0.5 parts of 80g / L aromatic aldehyde, 1.2 parts of 40g / L nicotinic acid derivativ...

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Abstract

The invention discloses an alkaline cyanide-free electroplating zinc-nickel alloy additive. The alkaline cyanide-free electroplating zinc-nickel alloy additive comprises, by mass, 50-80 parts of a complexing agent, 4-7 parts of a brightening agent and 12-21 parts of a nickel supplementing agent, wherein the complexing agent comprises hydroxycarboxylic acid, an amine substance and a polyamine compound, and the brightening agent comprises a brightening promoter, a non-ionic surfactant and a brightening agent. The invention furthermore discloses an alkaline cyanide-free electroplating zinc-nickelalloy electroplating liquid. The alkaline cyanide-free electroplating zinc-nickel alloy electroplating liquid is characterized by comprising 12-15 parts of 10-11 g / L zinc ions, 20-30 parts of 100-130g / L alkaline liquor, 50-80 parts of the 50-80 ml / L complexing agent, 12-21 parts of the 12-21 ml / L nickel supplementing agent, 4-7 parts of the 4-7 ml / L brightening agent and the balance water. By means of the alkaline cyanide-free electroplating zinc-nickel alloy additive, the brightness of a plating layer on a steel piece can be improved, so that the plating layer reaches the effect of approaching fully-bright nickle-plating color and luster, the luminous speed is high, and the efficiency of electroplating the steel piece is improved; the binding force of the plating layer is good, the corrosion resistance of the plating layer is improved, and the current efficiency of the plating layer is improved.

Description

technical field [0001] The invention relates to the technical field of electroplating zinc-nickel alloys, in particular to an alkaline cyanide-free electroplating zinc-nickel alloy additive and an electroplating solution. Background technique [0002] Electroplated zinc-nickel alloy refers to an alloy with a nickel content of less than 20% and a low nickel content. It has high corrosion resistance and can be used as an anodic protective coating for steel to protect steel parts from rust. The melting point of the zinc-nickel alloy coating is as high as 750°C-800°C, suitable for electroplating of automotive engine parts; hydrogen embrittlement and whiskers do not occur during the production process, and can replace cadmium-titanium alloy coatings on aircraft parts to reduce aircraft production costs. The preparation of electroplated zinc-nickel alloy is mainly through the electroplating zinc-nickel alloy solution under the condition of electrification to carry out atomic migra...

Claims

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Application Information

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IPC IPC(8): C25D3/56
CPCC25D3/565
Inventor 吴波周爱军罗叙丁桑礼辉
Owner 佛山市南海高益美环保实业有限公司
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