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Preparation of general brightener for potassium salt zinc plating and sulfate zinc plating

A technology of sulfate and brightener, applied in the field of electroplating additives, can solve the problems of coating compactness, poor leveling, poor dispersion ability of sulfate zinc plating solution, etc., and achieve the effect of improving brightness

Inactive Publication Date: 2011-04-06
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the dispersion ability of the sulfate galvanizing bath is poor, and the compactness and leveling of the coating are poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The specific preparation steps of this embodiment are as follows:

[0018] 1. Potassium salt galvanized Hull cell (250ml) experiment

[0019] a. Prepare a common potassium chloride galvanizing solution and adjust the pH value.

[0020] b. Add 2ml of brightener to the potassium chloride galvanizing solution while stirring to make it fully mixed.

[0021] c. Adjust the pH value of the plating solution again to make it within the process range.

[0022] d. When the temperature is controlled at about 30°C, electroplating is carried out, and the quality of the coating is observed after 8 minutes.

[0023] e. Increase the amount of brightener in turn (1ml each time) until the coating becomes foggy.

[0024] f. Comparing the coating quality of each sample plate, the best range of brightener can be obtained.

[0025] g. Add an appropriate amount of brightener to the potassium salt galvanizing tank, and adjust the pH value to the process range.

[0026] h. Starting from 10°...

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PUM

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Abstract

The invention relates to preparation of a general brightener for potassium salt zinc plating and sulfate zinc plating. C6H5COONa, C10H10O, AESA, an NNO dispersing agent, an OP emulsifying agent, C6H5NO2 and other substances are dissolved, and mixed uniformly according to a certain ratio. The general brightener can be generally used for potassium salt zinc plating and sulfate zinc plating and brings great convenience to management and production. The brightener can obviously improve the brightness, the leveling property and density of a plating layer, and the requirement on total-area brightness of a test piece can be met in a 2A Hull cell test.

Description

technical field [0001] The invention relates to the preparation of a general-purpose brightener for potassium salt galvanizing and sulfate galvanizing, and relates to the field of electroplating additives (brighteners). Background technique [0002] The galvanized layer has good corrosion resistance and is an excellent corrosion-resistant coating for metals. At present, it is widely used in industry, accounting for about 50% to 80% of the total electroplating. There are mainly potassium salt galvanizing, sulfate galvanizing, cyanide galvanizing, etc. However, cyanide galvanizing and other galvanizing processes have the problem of environmental pollution, so potassium salt galvanizing and sulfate galvanizing are the main galvanizing processes. [0003] Among them, sulfate galvanizing is mainly used for electroplating of wire and strip. It is characterized by high current density during electroplating and short electroplating time. However, the dispersion ability of the su...

Claims

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Application Information

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IPC IPC(8): C25D3/22
Inventor 石磊石浩洋商广旭王逊王世林李婷婷
Owner SHANDONG JIANZHU UNIV
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