CN102995081A - Cyanide-free bright silver plating electroplating solution - Google Patents
Cyanide-free bright silver plating electroplating solution Download PDFInfo
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- CN102995081A CN102995081A CN 201210385125 CN201210385125A CN102995081A CN 102995081 A CN102995081 A CN 102995081A CN 201210385125 CN201210385125 CN 201210385125 CN 201210385125 A CN201210385125 A CN 201210385125A CN 102995081 A CN102995081 A CN 102995081A
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- cyanide
- silver plating
- potassium
- electroplating solution
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Abstract
The invention relates to a cyanide-free bright silver plating electroplating solution which is characterized by mainly consisting of silver nitrate, potassium thiosulfate, potassium metabisulfite, potassium sulphate, boric acid, sulfuric acid, brightener, deionized water and the like. The cyanide-free bright silver plating electroplating solution does not contain cyanide, the coating is bright in mirror surface, a cyanide silver plating effect can be achieved, and the cyanide-free bright silver plating electroplating solution has the characteristics that the coating has less possibility of discoloring, and the solution is low in brittleness and high in adhesion force.
Description
Technical field
The present invention relates to a kind of non-cyanide bright plate silver plating solution, belong to metal material surface protection field.
Background technology
Silver-plated is a kind of of precious metal electroplating, because the cost of silvered film is lower than Gold plated Layer comparatively speaking, and has very high electroconductibility, light reflective and to organic acid, the chemical stability of alkali, thereby be widely used in the functional platings such as decorative electroplating electron device, because the in recent years fast development of electronic technology, make functional silver-plated increasing rapidly, yet, the prussiate of severe toxicity is silver-plated still to be the main flow that domestic and international silver plating industry is produced, along with people to the improving constantly of environmental consciousness, it is silver-plated that people substitute with serious pollution prussiate in the urgent need to the cyanide-free silver plating process of developing a kind of maturation.
At present, domestic non-cyanide bright agent exists bath stability lower slightly, and coating is excessively crisp, and the defective such as the coating anti-tarnishing ability is relatively poor, and brightness effect is undesirable.
The invention provides a kind of non-cyanide bright plate silver plating solution, main flow belongs to the alkylsulfonate plating bath, solve and overcome the solution composition that the problem of environmental pollution that exists in view of the fluoroborate plating bath and Citrate trianion plating bath exist complicated, produce difficult control and sulfamate plating bath permanent stability are poor, easily produce the shortcoming of lead sulfate precipitation.This non-cyanide bright plate silver plating solution has and does not contain prussiate, and coating minute surface light can reach the effect of cyaniding plant of silver, and have the characteristics such as coating is not easy to change, fragility is little, sticking power is good.
Summary of the invention
Purpose of the present invention is exactly to be to solve and overcome above-mentioned defective, and a kind of non-cyanide bright plate silver plating solution is provided.The present invention is achieved through the following technical solutions, it is characterized in that this non-cyanide bright plate silver plating solution mainly by: Silver Nitrate, Potassium Thiosulphate, potassium pyrosulfite, vitriolate of tartar, boric acid, sulfuric acid, brightening agent, deionized water etc. form.
By containing in its every liter plating bath: Silver Nitrate 40～80g/l, Potassium Thiosulphate 200～300g/L, potassium pyrosulfite 60～85g/L, vitriolate of tartar 10～20g/L, boric acid 20～45g/L, sulfuric acid 2～5g/L, brightening agent 5～10ml/L, surplus are deionized water.
Its brightening agent by dodecyl hexichol semi-annular jade pendant acid sodium, Soxylat A 25-7, potassium primary phosphate, urea, polyoxyethylene glycol, sulfur heterocyclic compound, contain nitronic acid.
Embodiment
1, takes by weighing Silver Nitrate 50g, with a small amount of deionized water dissolving.
2, under the normal temperature state, take by weighing Potassium Thiosulphate 200g; Potassium pyrosulfite 80; Vitriolate of tartar 15; Boric acid 35, brightening agent 8ml/L uses respectively a small amount of dissolved in distilled water with above-mentioned materials first, and then mixed diluting is to 800mL.
3, the solution for preparing in the Silver Nitrate compound and 2 that configuration in 1 is mixed mixes, 1000 milliliters of adding distilled water, and the pH value of solution is controlled at 5～6.
4, at ambient temperature, anode adopts graphite to do electrode, and negative electrode is the plating part, and current density is 6～8A/dm
2Under electroplate, can obtain the light silvering.
Claims (3)
1. non-cyanide bright plate silver plating solution.It is characterized in that this non-cyanide bright plate silver plating solution mainly by: Silver Nitrate, Potassium Thiosulphate, potassium pyrosulfite, vitriolate of tartar, boric acid, sulfuric acid, brightening agent, deionized water etc. form.
2. according to right 1 described a kind of non-cyanide bright plate silver plating solution.By containing in its every liter plating bath: Silver Nitrate 40～80g/l, Potassium Thiosulphate 200～300g/L, potassium pyrosulfite 60～85g/L, vitriolate of tartar 10～20g/L, boric acid 20～45g/L, sulfuric acid 2～5g/L, brightening agent 5～10ml/L, surplus are deionized water.
3. according to right 1,2 described a kind of non-cyanide bright plate silver plating solutions, its brightening agent by the acid of dodecyl hexichol semi-annular jade pendant sodium, Soxylat A 25-7, potassium primary phosphate, urea, polyoxyethylene glycol, sulfur heterocyclic compound, contain nitronic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210385125 CN102995081A (en) | 2012-10-12 | 2012-10-12 | Cyanide-free bright silver plating electroplating solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210385125 CN102995081A (en) | 2012-10-12 | 2012-10-12 | Cyanide-free bright silver plating electroplating solution |
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| CN102995081A true CN102995081A (en) | 2013-03-27 |
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| CN 201210385125 Pending CN102995081A (en) | 2012-10-12 | 2012-10-12 | Cyanide-free bright silver plating electroplating solution |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668358A (en) * | 2013-12-04 | 2014-03-26 | 山东省科学院新材料研究所 | Method of monopulse cyanide-free silver electroplating |
| CN104894617A (en) * | 2015-06-19 | 2015-09-09 | 司徒建辉 | Electroplating solution for bright silver plating |
| CN105040047A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Sliver-plating electroplate liquid and preparation method thereof |
| CN109518236A (en) * | 2019-01-21 | 2019-03-26 | 南昌航空大学 | A method of preparing non-cyanide plating silver layer resistant to high temperatures on copper plating piece |
| CN110592624A (en) * | 2019-10-29 | 2019-12-20 | 珠海市万顺睿通科技有限公司 | PCB silver electroplating solution containing compound sulfonate brightener |
| CN111235608A (en) * | 2020-03-10 | 2020-06-05 | 国网浙江省电力有限公司电力科学研究院 | Cyanide-free silver-based composite plating solution, silver-based composite plating layer and preparation method thereof |
| US10889907B2 (en) | 2014-02-21 | 2021-01-12 | Rohm And Haas Electronic Materials Llc | Cyanide-free acidic matte silver electroplating compositions and methods |
-
2012
- 2012-10-12 CN CN 201210385125 patent/CN102995081A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103668358A (en) * | 2013-12-04 | 2014-03-26 | 山东省科学院新材料研究所 | Method of monopulse cyanide-free silver electroplating |
| CN103668358B (en) * | 2013-12-04 | 2016-11-23 | 山东省科学院新材料研究所 | A kind of method of pulse non-cyanide silver electroplating |
| US10889907B2 (en) | 2014-02-21 | 2021-01-12 | Rohm And Haas Electronic Materials Llc | Cyanide-free acidic matte silver electroplating compositions and methods |
| CN104894617A (en) * | 2015-06-19 | 2015-09-09 | 司徒建辉 | Electroplating solution for bright silver plating |
| CN105040047A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Sliver-plating electroplate liquid and preparation method thereof |
| CN109518236A (en) * | 2019-01-21 | 2019-03-26 | 南昌航空大学 | A method of preparing non-cyanide plating silver layer resistant to high temperatures on copper plating piece |
| CN110592624A (en) * | 2019-10-29 | 2019-12-20 | 珠海市万顺睿通科技有限公司 | PCB silver electroplating solution containing compound sulfonate brightener |
| CN111235608A (en) * | 2020-03-10 | 2020-06-05 | 国网浙江省电力有限公司电力科学研究院 | Cyanide-free silver-based composite plating solution, silver-based composite plating layer and preparation method thereof |
| CN111235608B (en) * | 2020-03-10 | 2021-02-12 | 国网浙江省电力有限公司电力科学研究院 | Cyanide-free silver-based composite plating solution, silver-based composite plating layer and preparation method thereof |
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Application publication date: 20130327 |