A kind of cyanide-free silver plating pre-plating solution and preparation method thereof

A cyanide-free silver plating and pre-plating solution technology, applied in the field of silver electroplating, can solve the problems of high cost and low yield, and achieve the effects of improving bonding force, reducing production cost and being widely used

Active Publication Date: 2021-02-05
CHONGQING LIDAO SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for some precious metals, such as silver plating, the cost itself is high. If the yield is low due to poor bonding of the plating layer, the cost will be higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The concentration ratio of each component of the cyanide-free silver plating pre-plating solution described in the present embodiment is as follows:

[0021] Furfuryl Thioacetate 0.5g / L

[0022] Sodium citrate 60g / L

[0023] The remainder of the solution is deionized water.

[0024] The preparation method of the cyanide-free silver plating pre-plating solution described in the present embodiment is as follows:

[0025] 1) Preparation of furfuryl thioacetate solution: use water to dissolve the calculated and weighed amount of furfuryl thioacetate, stir and dissolve until clear, and set aside.

[0026] 2) Prepare sodium citrate solution: use water to dissolve sodium citrate in an amount corresponding to furfuryl thioacetate, stir and dissolve until clear, and set aside.

[0027] 3) Prepare cyanide-free silver plating pre-plating solution: use the sodium citrate solution prepared in step (2) to slowly add to the furfuryl thioacetate solution prepared in step (1), then d...

Embodiment 2

[0035] 1, the concentration ratio of each component of the cyanide-free silver plating pre-plating solution described in the present embodiment is as follows:

[0036] Furfuryl Thioacetate 1.5g / L

[0037] Potassium citrate 65g / L

[0038] The remainder of the solution is deionized water.

[0039] The preparation method of the cyanide-free silver plating pre-plating solution described in the present embodiment is as follows:

[0040] 1) Preparation of furfuryl thioacetate solution: use water to dissolve the calculated and weighed amount of furfuryl thioacetate, stir and dissolve until clear, and set aside.

[0041] 2) Prepare potassium citrate solution: use water to dissolve potassium citrate in an amount corresponding to furfuryl thioacetate, stir and dissolve until clear, and set aside.

[0042] 3) Prepare cyanide-free silver plating pre-plating solution: slowly add the potassium citrate solution prepared in step (2) into the furfuryl thioacetate solution prepared in step (...

Embodiment 3

[0048] 1, the concentration ratio of each component of the cyanide-free silver plating pre-plating solution described in the present embodiment is as follows:

[0049] Furfuryl Thioacetate 3g / L

[0050] Potassium citrate 70g / L

[0051] The remainder of the solution is deionized water.

[0052] The preparation method of the cyanide-free silver plating pre-plating solution described in the present embodiment is as follows:

[0053] 1) Preparation of furfuryl thioacetate solution: use water to dissolve the calculated and weighed amount of furfuryl thioacetate, stir and dissolve until clear, and set aside.

[0054] 2) Prepare potassium citrate solution: use water to dissolve potassium citrate in an amount corresponding to furfuryl thioacetate, stir and dissolve until clear, and set aside.

[0055] 3) Prepare cyanide-free silver plating pre-plating solution: slowly add the potassium citrate solution prepared in step (2) into the furfuryl thioacetate solution prepared in step (1)...

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PUM

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Abstract

The invention relates to a cyanide-free silver-plating pre-plating solution. In terms of mass concentration, the components of the cyanide-free silver-plating pre-plating solution are: sulfur-containing derivatives 0.1-5g / L, citrate 50-75g / L, The solvent is water. The sulfur-containing derivative is one or more of furfuryl thioacetate, furfuryl thioformate, ammonium methsulfate or diallyl disulfide. The cyanide-free silver plating pre-plating solution of the present invention improves the binding force of the cyanide-free silver plating layer, reduces the production cost of the cyanide-free silver plating, and can be widely used in the technical field of the cyanide-free silver plating.

Description

technical field [0001] The invention belongs to the technical field of electroplating silver, and relates to a cyanide-free silver plating pre-plating solution and a preparation method thereof. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation. role, and can also play a role in improving wear resistance, electrical conductivity, light reflection, corrosion resistance, etc. The process of electroplating is basically as follows, the plating metal is on the anode, the substance to be plated is on the cathode, and the cathode and anode are connected by an electrolyte solution. After the DC power supply is applied, the metal at the anode will be oxidized (lose electrons), and the positive ions in the solution...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/46
CPCC25D3/46
Inventor 胡国辉包海生肖春艳李谢武刘军
Owner CHONGQING LIDAO SURFACE TECH
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