CN115700296A - Water-soluble silver protective agent and preparation and use method thereof - Google Patents
Water-soluble silver protective agent and preparation and use method thereof Download PDFInfo
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- CN115700296A CN115700296A CN202211435419.0A CN202211435419A CN115700296A CN 115700296 A CN115700296 A CN 115700296A CN 202211435419 A CN202211435419 A CN 202211435419A CN 115700296 A CN115700296 A CN 115700296A
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Abstract
The invention discloses a water-soluble silver protective agent, which comprises the following raw materials in percentage by weight: 50-60% of emulsifier, 15-35% of linear saturated alkyl mercaptan, 6-10% of azole corrosion inhibitor, 1-3% of wetting agent and 5-15% of cosolvent; the invention also discloses a preparation and use method of the water-soluble silver protective agent, which comprises the following steps; s1, mixing 50-60% of emulsifier, 15-35% of linear saturated alkyl mercaptan, 6-10% of azole corrosion inhibitor, 1-3% of wetting agent and 5-15% of cosolvent, and stirring for 6-8 hours at 40-60 ℃ to obtain concentrated solution; s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and mixing uniformly. The water-soluble silver protective agent prepared by the invention has super-strong oxidation resistance and sulfuration resistance, simple operation process, easy cleaning of the protective agent and almost no influence on the conductivity and other properties of a silver layer.
Description
Technical Field
The invention relates to the technical field of protective agents, in particular to a water-soluble silver protective agent and a preparation and use method thereof.
Background
At present, after a workpiece is prepared in industrial production, in order to increase the oxidation resistance and the sulfuration resistance of the workpiece, a protective agent needs to be coated on the surface of the workpiece.
At present, most of protective agents coated on the surface of a workpiece are directly soaked in the protective agents for a period of time, the protective agents are poor in adhesion property although the protective agents are attached to the surface of the workpiece, so that the protective agents are easy to fall off after the workpiece is used for a period of time, and the oxidation resistance and the sulfuration resistance of the workpiece are reduced.
Based on the above, the invention provides a water-soluble silver protective agent and a preparation and use method thereof.
Disclosure of Invention
The water-soluble silver protective agent prepared by the invention has super-strong oxidation resistance and sulfuration resistance, is simple in operation process, easy to clean, and almost has no influence on the performances of silver layer such as conductivity and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a water-soluble silver protective agent comprises the following raw materials in percentage by weight: 50-60% of emulsifier, 15-35% of linear saturated alkyl mercaptan, 6-10% of azole corrosion inhibitor, 1-3% of wetting agent and 5-15% of cosolvent.
Preferably, the emulsifier is one or more of polyoxyethylene octyl phenol ether OP-10, polyoxyethylene octyl phenol ether OP-20, polyoxyethylene octyl phenol ether OP-30, nonylphenol polyoxyethylene ether NP-10, nonylphenol polyoxyethylene ether NP-20 and nonylphenol polyoxyethylene ether NP-30.
Preferably, the linear saturated alkyl mercaptan is one or more of dodecyl mercaptan, tert-dodecyl mercaptan, tetradecyl mercaptan, tert-tetradecyl mercaptan, n-hexadecyl mercaptan, tert-hexadecyl mercaptan, n-octadecyl mercaptan and tert-octadecyl mercaptan.
Preferably, the azole corrosion inhibitor is one or more of benzotriazole, 2-mercaptobenzothiazole, 2-mercaptobenzoxazole, 2-mercaptobenzimidazole, thiourea and 3-amino-1, 2, 4-triazole.
Preferably, the wetting agent is one or more of polyethylene glycol 4000, polyethylene glycol 6000, polyethylene glycol 8000 and 2-ethylhexyl sodium sulfate.
Preferably, the cosolvent is one or more of methanol, ethanol, glycerol, isopropanol, ethyl acetate and butyl acetate.
A preparation and use method of a water-soluble silver protective agent comprises the following steps;
s1, mixing 50-60% of emulsifier, 15-35% of linear saturated alkyl mercaptan, 6-10% of azole corrosion inhibitor, 1-3% of wetting agent and 5-15% of cosolvent, and stirring for 6-8 hours at 40-60 ℃ to obtain concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
The invention has the following beneficial effects:
the water-soluble silver protective agent prepared by the invention has super-strong oxidation resistance and sulfuration resistance, simple operation process, easy cleaning of the protective agent and almost no influence on the conductivity and other properties of a silver layer.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms than those specifically described herein, and it will be apparent to those skilled in the art that many more modifications are possible without departing from the spirit and scope of the invention.
Example one:
s1, mixing polyoxyethylene octyl phenol ether OP-1025, nonylphenol polyoxyethylene ether NP-3028, tertiary dodecyl mercaptan 16, tetradecyl mercaptan 10, tertiary hexadecyl mercaptan 5, 2-mercaptobenzothiazole 2, 2-mercaptobenzoxazole 3, thiourea 2, 3-amino-1, 2, 4-triazole 2, methanol 3, isopropanol 1 and ethyl acetate 3 percent, and stirring for 6-8 hours at 40-60 ℃ to obtain a concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
Example two:
s1, mixing polyoxyethylene octyl phenol ether OP-3025, nonylphenol polyoxyethylene ether NP-2028, tert-dodecyl mercaptan 8, tetradecyl mercaptan 16, hexadecyl mercaptan 8, benzotriazole 3, 2-mercaptobenzoxazole 2, 3-amino-1, 2, 4-triazole 3, methanol 3, isopropanol 1, and butyl acetate 3%, and stirring at 40-60 ℃ for 6-8 hours to obtain a concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
Example three:
s1, mixing polyoxyethylene octyl phenol ether OP-2025%, nonylphenol polyoxyethylene ether NP-1028%, dodecyl mercaptan 10%, hexadecyl mercaptan 16%, octadecyl mercaptan 5%, benzotriazole 3%, 2-mercaptobenzoxazole 3%, 3-amino-1, 2, 4-triazole 3%, glycerol 3%, isopropanol 1% and ethyl acetate 3%, and stirring for 6-8 hours at 40-60 ℃ to obtain a concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
Example four:
s1, mixing polyoxyethylene octyl phenol ether OP-3025%, nonylphenol polyoxyethylene ether NP-1016%, nonylphenol polyoxyethylene ether NP-1820%, dodecyl mercaptan 10%, hexadecyl mercaptan 10%, octadecyl mercaptan 5%, benzotriazole 2%, 2-mercaptobenzoxazole 2%, 3-amino-1, 2, 4-triazole 3%, glycerol 3%, isopropanol 1% and butyl acetate 3%, and stirring for 6-8 hours at 40-60 ℃ to obtain a concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
Example five:
s1, mixing polyoxyethylene octyl phenol ether OP-3025%, nonylphenol polyoxyethylene ether NP-1016%, nonylphenol polyoxyethylene ether NP-2018%, dodecyl mercaptan 10%, hexadecyl mercaptan 10%, octadecyl mercaptan 5%, benzotriazole 3%, 2-mercaptobenzoxazole 3%, 3-amino-1, 2, 4-triazole 3%, glycerol 3%, isopropanol 1% and ethyl acetate 3%, and stirring for 6-8 hours at 40-60 ℃ to obtain a concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
Example six:
s1, mixing polyoxyethylene octyl phenol ether OP-3018%, nonylphenol polyoxyethylene ether NP-1022%, nonylphenol polyoxyethylene ether NP-2518%, dodecyl mercaptan 13%, hexadecyl mercaptan 10%, octadecyl mercaptan 5%, benzotriazole 3%, 2-mercaptobenzoxazole 2%, 3-amino-1, 2, 4-triazole 4%, glycerol 3%, isopropanol 1% and butyl acetate 3%, and stirring for 6-8 hours at 40-60 ℃ to obtain a concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
The silver-plated products soaked in different manners are tested under the neutral salt spray test, and the test result of the damage time of the surface protection film of the gold-plated product is as follows:
| soaked gold-plated product using the scheme | Test time (H) |
| Example 1 | 6-10 |
| Example 2 | 7-10 |
| Example 3 | 8-12 |
| Example 4 | 8-12 |
| Example 5 | 6-12 |
| Example 6 | 8-16 |
The test results show that the water-soluble silver protective agent disclosed by the invention can form an excellent and compact protective film on the surface of a silver layer, has little influence on the appearance and the conductivity, and can greatly prolong the service life of the silver layer.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The water-soluble silver protective agent is characterized by comprising the following raw materials in percentage by weight: 50-60% of emulsifier, 15-35% of linear saturated alkyl mercaptan, 6-10% of azole corrosion inhibitor, 1-3% of wetting agent and 5-15% of cosolvent.
2. The water-soluble silver protectant according to claim 1, wherein the emulsifier is one or more of polyoxyethylene octylphenol ether OP-10, polyoxyethylene octylphenol ether OP-20, polyoxyethylene octylphenol ether OP-30, nonylphenol polyoxyethylene ether NP-10, nonylphenol polyoxyethylene ether NP-20, and nonylphenol polyoxyethylene ether NP-30.
3. The water-soluble silver protectant according to claim 1, wherein the linear saturated alkyl mercaptan is one or more of dodecyl mercaptan, t-dodecyl mercaptan, tetradecyl mercaptan, t-tetradecyl mercaptan, n-hexadecyl mercaptan, t-hexadecyl mercaptan, n-octadecyl mercaptan, and t-octadecyl mercaptan.
4. The water-soluble silver protective agent according to claim 1, wherein the azole corrosion inhibitor is one or more of benzotriazole, 2-mercaptobenzothiazole, 2-mercaptobenzoxazole, 2-mercaptobenzimidazole, thiourea and 3-amino-1, 2, 4-triazole.
5. The water-soluble silver protectant according to claim 1, wherein the wetting agent is one or more of polyethylene glycol 4000, polyethylene glycol 6000, polyethylene glycol 8000 and sodium 2-ethylhexyl sulfate.
6. The water-soluble silver protective agent according to claim 1, wherein the cosolvent is one or more of methanol, ethanol, glycerol, isopropanol, ethyl acetate, and butyl acetate.
7. The preparation and use method of the water-soluble silver protective agent based on the claim 1 is characterized by comprising the following steps;
s1, mixing 50-60% of emulsifier, 15-35% of linear saturated alkyl mercaptan, 6-10% of azole corrosion inhibitor, 1-3% of wetting agent and 5-15% of cosolvent, and stirring for 6-8 hours at 40-60 ℃ to obtain concentrated solution;
s2, adding 60% deionized water by volume, heating to 60 ℃, then adding 40ml/L concentrated solution under continuous stirring, and uniformly mixing;
s3, adding pure water to a standard volume, uniformly stirring, and adjusting the solution to a working temperature;
s4, soaking the cleaned or activated workpiece wetted by the silver or silver-plated product in a protective solution at the temperature of 20-60 ℃ for 0.5-3.0min;
s5, cleaning in hot pure water at 35-42 ℃ for 0.5-1.0min;
s6, washing in pure water for 1-3min;
and S7, cleaning and drying.
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| CN202211435419.0A CN115700296A (en) | 2022-11-16 | 2022-11-16 | Water-soluble silver protective agent and preparation and use method thereof |
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| CN202211435419.0A CN115700296A (en) | 2022-11-16 | 2022-11-16 | Water-soluble silver protective agent and preparation and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355452A (en) * | 2023-04-12 | 2023-06-30 | 东莞市促裕新材料有限公司 | Sulfur-resistant salt-fog-resistant metal protective agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355452A (en) * | 2023-04-12 | 2023-06-30 | 东莞市促裕新材料有限公司 | Sulfur-resistant salt-fog-resistant metal protective agent and preparation method thereof |
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