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Method for detecting multi-brightener in liquid for brilliantly nickel plating

A technology of brightener and nickel plating, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems that the content of brightener cannot be checked, the rational compatibility of brightener can be realized, and the same type can be realized, so as to increase the quality control ability and shorten the measurement time. Time, reduce the effect of detection investment

Inactive Publication Date: 2009-02-11
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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AI Technical Summary

Problems solved by technology

These methods measure the total amount of additives in the electroplating solution, and cannot examine the content of various brighteners and guide the reasonable compatibility of brighteners.
The inventor once disclosed a method for measuring multiple brighteners in bright nickel plating bath by chromatography in Chinese invention patent 200610049212.4, the method disclosed in 200610049212.4 Although the separation of various brighteners can be realized in the method, only one type of brightener can be realized in one injection, such as the determination of primary brightener or secondary brightener, and it has not been solved that one injection can realize different types of brighteners at the same time. determination

Method used

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  • Method for detecting multi-brightener in liquid for brilliantly nickel plating
  • Method for detecting multi-brightener in liquid for brilliantly nickel plating
  • Method for detecting multi-brightener in liquid for brilliantly nickel plating

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Experimental program
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Embodiment

[0019] Step 1: Weigh NiSO separately 4 300g, NiCl 2 40g, H 3 BO 3 Dissolve 40g of them in 1L of purified water heated to 80°C to prepare 1L of blank electroplating solution without any brightener.

[0020] Step 2: Prepare a series of mixed standard solutions containing primary brightener, secondary brightener and wetting agent according to the actual production process, wherein the primary brightener is saccharin, and the secondary brightener is diethoxybutyne di Alcohol and N, N-diethyl-2-propyn-1-amine, sodium dodecylsulfonate as wetting agent (fixed its concentration at 300mg / L). The concentration of each standard solution is shown in Table 1. Take standard solution 1 as an example to illustrate the preparation method.

[0021] Table 1 Composition of standard solutions containing various brighteners

[0022]

[0023] Weigh 100mg of primary brightener saccharin, 10mg of secondary brightener diethoxybutynediol and N,N-diethyl-2-propyn-1-amine an...

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Abstract

Aiming at the deficiency of the prior art, the invention provides an advanced and effective separation method and a detection technology, in particular to a combined detection method by utilizing liquid chromatogram-diode array-evaporative light scattering detector. One-time sample introduction is adopted, and simultaneously various brightener in bright nickel plating solution is detected. The accurate and effective detection for the content of the various brightener is realized, the quality control of the bright nickel plating is realized in the real sense, the method is reliable and rapid, and the operation is simple.

Description

technical field [0001] The invention relates to a method for measuring various brighteners in a bright nickel plating bath. Background technique [0002] Electroplating is one of the most commonly used and effective modern surface treatment techniques. After electroplating, the appearance and various physical and chemical properties of the surface of raw materials can be changed, such as corrosion resistance, wear resistance, welding performance, electrical properties, magnetic properties, etc., while the original metallurgical and mechanical properties can still be maintained inside the parts. Electroplating has been widely used in various industrial production and scientific research fields, and plays an important role in the corrosion protection of materials and aesthetic decoration. Among them, the bright nickel plating technology has been widely used due to the development of functional coating technologies such as good corrosion resistance, wear resistance, and protec...

Claims

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Application Information

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IPC IPC(8): G01N30/89
Inventor 沈昊宇
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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