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Brightener for cyanide-free brush silver plating and application of brightener

A technology of brightener and brush plating, which is applied in the field of cyanide-free brush silver plating brightener, can solve the problems of slow plating speed and insufficient white appearance of the plating layer, and achieve the effect of increasing the thickness of the plating layer, increasing the thickness, and improving the dissolution efficiency

Active Publication Date: 2021-11-26
CHONGQING LIDAO SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is intended to provide a brightener for cyanide-free brush silver plating and its application, which solves the problems of slow plating speed and coating layer in traditional cyanide-free brush silver plating. The problem of not being bright enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A brightener for cyanide-free brush silver plating, consisting of the following components: 1-thiophenemethanol, 20g / L triphenylphosphine and 30g / L 1-ethyl-(3-dimethyl aminopropyl) carbodiimide hydrochloride, and the rest of the solution is deionized water.

[0016] The preparation method of above-mentioned brightener comprises the steps:

[0017] S1. Prepare 2-thiophene methanol solution: dissolve 10 g of 2-thiophene methanol in 100 ml of deionized water, stir and dissolve until clear, and set aside;

[0018] S2. Preparation of triphenylphosphine: use an analytical balance to weigh 20 g for preparation, and set aside;

[0019] S3, preparation of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride solution: use 200ml deionized water to dissolve 30g of 1-ethyl-(3-dimethylaminopropyl) carbon Imide hydrochloride, stirred and dissolved until clarified, set aside;

[0020] S4. Preparation of cyanide-free brush silver plating brightener: use the triphenylphosphine w...

Embodiment 2

[0027] A brightener for cyanide-free brush silver plating, consisting of the following components: 8g / L of 2-thiophenemethanol, 16g / L of triphenylphosphine and 24g / L of 1-ethyl-(3-dimethyl aminopropyl) carbodiimide hydrochloride, and the rest of the solution is deionized water.

[0028] The preparation method of above-mentioned brightener comprises the steps:

[0029] S1. Prepare 2-thiophene methanol solution: Dissolve 8 g of 2-thiophene methanol in 100 ml of deionized water, stir and dissolve until clear, and set aside;

[0030] S2. Preparation of triphenylphosphine: use an analytical balance to weigh 16 g for preparation, and set aside;

[0031] S3, preparation of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride solution: use 200ml deionized water to dissolve 24g of 1-ethyl-(3-dimethylaminopropyl) carbon Imide hydrochloride, stirred and dissolved until clarified, set aside;

[0032] S4. Preparation of cyanide-free brush silver plating brightener: use the triphen...

Embodiment 3

[0039] A brightener for cyanide-free brush silver plating consists of the following components: 12g / L of 2-thiophenemethanol, 24g / L of triphenylphosphine and 36g / L of 1-ethyl-(3-dimethyl aminopropyl) carbodiimide hydrochloride, and the rest of the solution is deionized water.

[0040] The preparation method of above-mentioned brightener comprises the steps:

[0041] S1. Prepare 2-thiophene methanol solution: dissolve 12 g of 2-thiophene methanol in 100 ml of deionized water, stir and dissolve until clear, and set aside;

[0042] S2. Preparation of triphenylphosphine: use an analytical balance to weigh 24g for preparation, and set aside;

[0043] S3, preparation of 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride solution: use 200ml deionized water to dissolve 36g of 1-ethyl-(3-dimethylaminopropyl) carbon Imide hydrochloride, stirred and dissolved until clarified, set aside;

[0044] S4. Preparation of cyanide-free brush silver plating brightener: use the triphenyl...

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PUM

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Abstract

The invention discloses a brightener for cyanide-free brush silver plating and application of the brightener, and particularly relates to the technical field of brush plating. The invention provides the brightener for the cyanide-free brush silver plating and a preparation method of the brightener. The brightener is prepared from 2-thiophenemethanol, triphenylphosphine and 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride. By the adoption of the technical scheme, the problems that traditional cyanide-free brush silver plating is low in plating speed and the appearance of a plating layer is not white and bright enough are solved, and the brightener can be used for improving the plating speed in the cyanide-free brush silver plating process.

Description

technical field [0001] The invention relates to the technical field of electric brush plating, in particular to a brightener for cyanide-free brush plating of silver. Background technique [0002] Brush plating, also known as metal pen plating, fast electroplating, brush plating, uses the electro-chemical method to use the plating pen soaked in the plating solution as the anode, so that the metal ions are discharged and crystallized on the surface of the negative electrode (workpiece) to form a metal coating. process. [0003] The brush silver plating process is mainly used in fields requiring high electrical conductivity, such as electronic power, aerospace, etc. It has extremely high practical value especially for partial plating and repair of the plating layer. During the operation, the relative movement speed of the cathode and the anode is fast, so It is allowed to use a higher current density, which is several to dozens of times larger than the current density used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/46C25D5/06
CPCC25D3/46C25D5/06
Inventor 胡国辉黄义定肖春艳欧忠文刘军段潇秦云彬
Owner CHONGQING LIDAO SURFACE TECH
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