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Non-cyanide environment-friendly silver plating liquid

An environment-friendly, silver-plating solution technology, applied in the field of plating solution, can solve problems such as pungent taste, cyanide-free silver plating is not widely used, and affects the working mood of workshop workers, etc., and achieves the effect of reasonable ratio

Inactive Publication Date: 2019-01-15
新沂市大明科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the performance of the coating cannot meet the process requirements, poor stability, poor bonding and other problems, cyanide-free silver plating has not been widely used in the electroplating banking industry
[0003] In addition, a variety of pungent odors are added to the silver plating solution, which seriously affects the working mood of the workshop workers, and the smell is pungent, and some even dizzy, posing potential health risks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: a kind of cyanide-free environment-friendly silver-plating liquid, is made up of the raw material of following parts by weight: wherein the concentration of each component is as follows:

[0035] The silver nitrate is 45g / L; the sodium sulfate 20g / L; the potassium pyrophosphate 20g / L; the sodium pyrosulfite 25g / L; the brightener 4mL; The flavoring agent is 0.4ml / L and the bacteriostat is 0.3ml / L.

Embodiment 2

[0036] Embodiment 2: a kind of cyanide-free environment-friendly silver-plating liquid, is made up of the raw material of following parts by weight: wherein the concentration of each component is as follows:

[0037] The silver nitrate is 50g / L; the sodium sulfate 15g / L; the potassium pyrophosphate 30g / L; the sodium pyrosulfite 15g / L; the brightener 8mL; The flavoring agent is 0.2ml / L and the bacteriostat is 0.4ml / L.

Embodiment 3

[0038] Embodiment 3: a kind of cyanide-free environment-friendly silver-plating liquid, is made up of the raw material of following parts by weight: wherein the concentration of each component is as follows:

[0039] The silver nitrate is 47g / L; the sodium sulfate 17g / L; the potassium pyrophosphate 26g / L; the sodium pyrosulfite 22g / L; the brightener 5mL; The flavoring agent is 0.25ml / L and the bacteriostat is 0.32ml / L.

[0040] The silver plating solution in the above-mentioned embodiment comprises silver nitrate, sodium sulfate, potassium pyrophosphate, sodium pyrosulfite, brightening agent, wetting agent, regulator, flavoring agent and antibacterial agent, proportioning is reasonable, cyanide-free, the obtained plating The silver liquid is environmentally friendly, and its performance meets the standard;

[0041] Among them, among the products plated by using the silver plating solution, the silver plated layer can obtain a plated layer with good bonding with the plated par...

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PUM

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Abstract

The invention discloses non-cyanide environment-friendly silver plating liquid, which is prepared from the following ingredients in concentration: 45 to 50g / L of silver nitrate, 15 to 20g / L of sodiumsulfate, 20 to 30g / L of potassium pyrophosphate, 15 to 25g / L of sodium pyrosulfite, 4 to 8mL of brightening agents, 12 to 20ml / L of regulating agents, 0.2 to 0.4ml / L of seasoning agents and 0.3 to 0.4ml / L of bacteriostatic agents, wherein the brightening agents are prepared from polyethyleneimine, imidazolyl propoxyl condensation compounds, azacyclo derivatives, modified aromatic aldehyde compounds, epoxy chloropropane and water; the seasoning agents are selected from at least one kind of materials in jasmine essence, methylionone, menthol, clove essential oil, geraniol and eugenol. The non-cyanide environment-friendly silver plating liquid has the advantages that the environment-friendly effect is achieved; the taste is fresh; pungent smell does not exist; the work environment comfort isimproved, so that employees are in a pleasant mood; the work efficiency is improved; a plating layer with good combination performance with plating elements, small plating layer stress, high compactness and good brightness can be obtained.

Description

technical field [0001] The invention relates to the technical field of plating solutions, in particular to a silver plating solution. Background technique [0002] Metal silver plating has good electrical conductivity, weldability and low contact resistance. It is widely used in appearance decoration, electronic devices, transformers, and valuable instruments and meters. The current market is mainly based on cyanide silver plating process, which pollutes the environment and harms the environment. damage to the health of the operator. The cyanide-free silver plating solution uses cyanide-free ions as silver ion complexing agents to deposit silver plating layers through electrochemical reactions. However, due to the performance of the coating cannot meet the process requirements, poor stability, poor bonding and other problems, cyanide-free silver plating has not been widely used in the electroplating banking industry. [0003] In addition, a variety of pungent smelling subs...

Claims

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Application Information

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IPC IPC(8): C25D3/46
CPCC25D3/46
Inventor 徐建东
Owner 新沂市大明科技开发有限公司
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