Single tin salt electrolytic coloring additive and application thereof

A technology of electrolytic coloring and additives, applied in the direction of electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve problems such as difficult to put into use, unstable production, unstable quality, etc., to achieve weakened edge effects, full and bright background color , the effect of stable and uniform color

Inactive Publication Date: 2018-07-31
FOSHAN HAIHUA SURFACE TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under the background of the existing technology, the monotin salt system has not been overcome due to the technical difficulties of its colorant, resulting in various problems such as high input cost, high operating cost, unstable production, unstable quality, etc., and it is difficult to really be put into use. use

Method used

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  • Single tin salt electrolytic coloring additive and application thereof
  • Single tin salt electrolytic coloring additive and application thereof
  • Single tin salt electrolytic coloring additive and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A monotin salt electrolytic coloring additive comprises 30 parts of tartaric acid, 10 parts of boric acid, 25 parts of ferrous sulfate, 10 parts of hydrazine sulfate, 5 parts of thiourea and 1 part of modified aminoamide zinc phosphate in parts by mass.

[0036] Among them, tartaric acid is used to prevent the hydrolysis of stannous sulfate in the tank matching process. Boric acid is used to keep the conductive bath from becoming less acidic. Hydrazine sulfuric acid complexes stannous ions, making stannous ions more stable and difficult to hydrolyze into tetravalent tin. Thiourea is used to improve the dispersibility of the monostannic salt electrolytic coloring additive of the present invention. Ferrous sulfate can ensure the stability of the coloring solution.

[0037] Each component of the monotin salt electrolytic coloring additive of the present invention is indispensable, and cooperates with each other to bring out the best in each other.

[0038] The mono-tin s...

Embodiment 2

[0040] A monotin salt electrolytic coloring additive comprises 35 parts of tartaric acid, 15 parts of boric acid, 35 parts of ferrous sulfate, 17 parts of hydrazine sulfate, 7 parts of thiourea and 1 part of modified aminoamide zinc phosphate in parts by mass.

[0041] In this embodiment, the single tin salt electrolytic coloring additive tank and its coloring process are the same as in Embodiment 1.

Embodiment 3

[0043] A monotin salt electrolytic coloring additive, comprising 40 parts of tartaric acid, 20 parts of boric acid, 45 parts of ferrous sulfate, 25 parts of hydrazine sulfate, 10 parts of thiourea and 1 part of modified aminoamide zinc phosphate in parts by mass.

[0044] In this embodiment, the single-tin salt electrolytic coloring additive tank and its coloring process are also the same as in Embodiment 1.

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PUM

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Abstract

The invention discloses a single tin salt electrolytic coloring additive. The single tin salt electrolytic coloring additive comprises a complexing agent, a buffer agent, an antioxidant and a surfactant, wherein the antioxidant comprises ferrous sulfate; the single tin salt electrolytic coloring additive also comprises an auxiliary agent containing ferrous sulfate; the auxiliary agent comprises modified amino amide zinc phosphate. The single tin salt electrolytic coloring additive disclosed by the invention has good comprehensive performances, solves the problem that nickel must take part in the reaction in an electrolytic coloring process, and is stable in groove liquid and quick and uniform to color, and the cost can be lowered effectively. Moreover, the single tin salt electrolytic coloring additive is low-carbon, energy-saving and green and environment-friendly, and process and product quality consistent to those of a double salt system can be obtained.

Description

technical field [0001] The invention relates to the technical field of electrolytic coloring additives, in particular to a monotin salt electrolytic coloring additive and its application. Background technique [0002] Electrolytic coloring is a commonly used process in anodic oxidation surface treatment of aluminum alloys. In the current market, those skilled in the art often use double-salt coloring additives, namely the system of nickel sulfate plus stannous sulfate. In this system, nickel sulfate has excellent electrical conductivity and current dispersion, and is an essential material for electrolytic coloring process. But along with my country's emphasis on environmental protection, nickel salt has been banned or restricted as heavy metal in this technical field. [0003] Therefore, it has become the goal of the next step in this technical field to develop a mono-tin salt system (without nickel sulfate) with stable quality, low cost and environmental protection. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/22
CPCC25D11/22
Inventor 夏良文王相刚
Owner FOSHAN HAIHUA SURFACE TREATMENT TECH CO LTD
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