CN115726009A - Wear-resistant silver-plated bright additive and preparation method thereof - Google Patents
Wear-resistant silver-plated bright additive and preparation method thereof Download PDFInfo
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- CN115726009A CN115726009A CN202211443721.0A CN202211443721A CN115726009A CN 115726009 A CN115726009 A CN 115726009A CN 202211443721 A CN202211443721 A CN 202211443721A CN 115726009 A CN115726009 A CN 115726009A
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- 239000000654 additive Substances 0.000 title claims abstract description 68
- 230000000996 additive effect Effects 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 229910052709 silver Inorganic materials 0.000 claims abstract description 74
- 239000004332 silver Substances 0.000 claims abstract description 74
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000007747 plating Methods 0.000 claims abstract description 58
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000005282 brightening Methods 0.000 claims abstract description 35
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229940026189 antimony potassium tartrate Drugs 0.000 claims abstract description 26
- WBTCZEPSIIFINA-MSFWTACDSA-J dipotassium;antimony(3+);(2r,3r)-2,3-dioxidobutanedioate;trihydrate Chemical compound O.O.O.[K+].[K+].[Sb+3].[Sb+3].[O-]C(=O)[C@H]([O-])[C@@H]([O-])C([O-])=O.[O-]C(=O)[C@H]([O-])[C@@H]([O-])C([O-])=O WBTCZEPSIIFINA-MSFWTACDSA-J 0.000 claims abstract description 26
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 claims abstract description 24
- 235000011006 sodium potassium tartrate Nutrition 0.000 claims abstract description 24
- 150000003481 tantalum Chemical class 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 23
- -1 polyoxyethylene Polymers 0.000 claims abstract description 19
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 17
- 150000001412 amines Chemical class 0.000 claims abstract description 16
- 239000003760 tallow Substances 0.000 claims abstract description 16
- 239000008139 complexing agent Substances 0.000 claims abstract description 15
- FBWNMEQMRUMQSO-UHFFFAOYSA-N tergitol NP-9 Polymers CCCCCCCCCC1=CC=C(OCCOCCOCCOCCOCCOCCOCCOCCOCCO)C=C1 FBWNMEQMRUMQSO-UHFFFAOYSA-N 0.000 claims abstract description 15
- LWFUFLREGJMOIZ-UHFFFAOYSA-N 3,5-dinitrosalicylic acid Chemical compound OC(=O)C1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1O LWFUFLREGJMOIZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001476 sodium potassium tartrate Substances 0.000 claims abstract description 6
- 229940074439 potassium sodium tartrate Drugs 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 7
- WHUDMXZZLKKSHG-UHFFFAOYSA-K trisodium N-(2-aminoethyl)hydroxylamine triacetate Chemical compound C(C)(=O)[O-].C(C)(=O)[O-].C(C)(=O)[O-].ONCCN.[Na+].[Na+].[Na+] WHUDMXZZLKKSHG-UHFFFAOYSA-K 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- OEIMLTQPLAGXMX-UHFFFAOYSA-I tantalum(v) chloride Chemical compound Cl[Ta](Cl)(Cl)(Cl)Cl OEIMLTQPLAGXMX-UHFFFAOYSA-I 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- WUSPVAHLRCJNMG-UHFFFAOYSA-D tantalum(5+) pentasulfate Chemical compound [Ta+5].[Ta+5].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O WUSPVAHLRCJNMG-UHFFFAOYSA-D 0.000 claims description 4
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 3
- ZAWGLAXBGYSUHN-UHFFFAOYSA-M sodium;2-[bis(carboxymethyl)amino]acetate Chemical compound [Na+].OC(=O)CN(CC(O)=O)CC([O-])=O ZAWGLAXBGYSUHN-UHFFFAOYSA-M 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 1
- GSGDTSDELPUTKU-UHFFFAOYSA-N nonoxybenzene Chemical compound CCCCCCCCCOC1=CC=CC=C1 GSGDTSDELPUTKU-UHFFFAOYSA-N 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 10
- 238000002845 discoloration Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000009713 electroplating Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- LFAGQMCIGQNPJG-UHFFFAOYSA-N silver cyanide Chemical compound [Ag+].N#[C-] LFAGQMCIGQNPJG-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 229910001439 antimony ion Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- DZCAZXAJPZCSCU-UHFFFAOYSA-K sodium nitrilotriacetate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O DZCAZXAJPZCSCU-UHFFFAOYSA-K 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- MBBUQUXJJUSCJN-UHFFFAOYSA-N [K].[Ag]C#N Chemical compound [K].[Ag]C#N MBBUQUXJJUSCJN-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
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- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention relates to the technical field of brightening additives, in particular to a wear-resistant silver-plating brightening additive and a preparation method thereof; the application discloses a wear-resistant silver plating brightening additive, wherein each liter of the additive comprises the following raw materials by weight: 20-25 g of antimony potassium tartrate, 5-10g of soluble tantalum salt, 150-160 g of sodium potassium tartrate, 3-5 g of imidazole, 15-20 g of complexing agent, 3,5-dinitrosalicylic acid, 10-15 g of polyoxyethylene (9) nonylphenyl ether and 25-30 mg of tallow amine polyoxyethylene (15) ether. After the additive is added into the electrolyte, the hardness of the silver layer is obviously improved, so that the hardness of the silver layer is improved from the general 100HV to 200HV-250HV, and the wear-resistant requirement is met.
Description
Technical Field
The invention relates to the technical field of brightening additives, in particular to a wear-resistant silver-plating brightening additive and a preparation method thereof.
Background
For a long time, in order to obtain a bright silver layer, a mechanical polishing or chemical immersion polishing (silver electroplating) method is usually adopted for the dark silver layer, but both methods are used for obtaining the bright silver layer by mechanical and chemical reprocessing based on the existing dark silver layer. Thus, not only the working procedures are increased, but also the thickness of the silver coating layer is lost by 2-5 mu m due to mechanical polishing and chemical etching, and a large amount of noble metal silver is wasted.
The current practical silver electroplating system can be divided into cyanide silver plating and cyanide-free silver plating. With the increasing awareness of environmental protection, cyanide-free silver plating is the development direction in the future. However, compared with cyanide silver plating, cyanide-free silver plating has a complex operation process and higher cost, and especially, the stability of the plating solution and brightener thereof in the cyanide-free silver plating system cannot be well solved and is difficult to operate continuously for a long time, so that the cyanide system is still the dominant mode for silver plating at present. In addition, polysulfide crop brightening agents are generally adopted in cyanide silver plating, sulfur is introduced, the hardness of electroplated silver is reduced, most of the existing new energy automobile charging piles and charging head interfaces adopt cyanide silver plating processes, and the produced automobile charging piles and charging head interfaces cannot meet the requirements of wear resistance and plugging resistance.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a wear-resistant silver plating brightening additive and a preparation method thereof, wherein the additive is added into an electrolyte to improve the hardness of a silver layer, so that the hardness of the silver layer is improved from the general 100HV to 200HV-250HV, and the wear-resistant requirement is met.
The purpose of the invention is realized by the following technical scheme:
the wear-resistant silver plating brightening additive comprises the following raw materials in parts by weight per liter:
20-25 g of antimony potassium tartrate, 5-10g of soluble tantalum salt, 150-160 g of sodium potassium tartrate, 3-5 g of imidazole, 15-20 g of complexing agent, 3,5-dinitrosalicylic acid, 10-15 g of polyoxyethylene (9) nonylphenyl ether and 25-30 mg of tallow amine polyoxyethylene (15) ether.
Preferably, the soluble tantalum salt is any one of tantalum pentachloride and tantalum sulfate.
Preferably, the complexing agent is any one or more of trisodium N-hydroxyethylenediamine triacetate, sodium aminotriacetate and diethylenetriamine pentacarboxylate.
Preferably, the weight ratio of the antimony potassium tartrate, the soluble tantalum salt and the potassium sodium tartrate in the additive is 5.
Preferably, the weight ratio of the polyoxyethylene (9) nonyl phenyl ether and the tallow amine polyoxyethylene (15) ether in the additive is 21.
Preferably, each liter of the additive comprises the following raw materials by weight:
21-24 g of antimony potassium tartrate, 6-9 g of soluble tantalum salt, 152-158 g of sodium potassium tartrate, 4 g of imidazole, 16-29 g of complexing agent, 11-14 g of 3,5-dinitrosalicylic acid, 21-24 mg of polyoxyethylene (9) nonylphenyl ether and 26-29 mg of tallow amine polyoxyethylene (15) ether.
More preferably, the additive comprises the following raw materials by weight per liter:
23 g of antimony potassium tartrate, 7 g of soluble tantalum salt, 155 g of potassium sodium tartrate, 4 g of imidazole, 17 g of complexing agent, 3,5-dinitrosalicylic acid, 23 mg of polyoxyethylene (9) nonylphenyl ether and 27 mg of tallow amine polyoxyethylene (15) ether.
The preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
s1, preparing materials
Preparing the wear-resistant silver plating brightening additive per liter by the following raw materials by weight:
20-25 g of antimony potassium tartrate, 5-10g of soluble tantalum salt, 150-160 g of sodium potassium tartrate, 3-5 g of imidazole, 15-20 g of complexing agent, 3,5-dinitrosalicylic acid, 10-15 g of polyoxyethylene (9) nonylphenyl ether and 25-30 mg of tallow amine polyoxyethylene (15) ether.
S2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt with water respectively, and mixing; and adding the rest raw materials, and fully mixing to obtain the additive.
In the application, a hardening agent mainly composed of antimony potassium tartrate is added, so that antimony and silver ions contained in the hardening agent are codeposited, and the hardness and the brightness of the silver coating are greatly improved. In order to ensure that the antimony ions can stably exist in the plating solution in a complex state, potassium sodium tartrate is added as a complexing agent of the antimony ions, so that the plating solution is more stable in the whole silver plating process. The soluble tantalum salt is added, tantalum is used as the metal with the highest hardness and is introduced into a silver plating system to be co-deposited with silver to form a silver-antimony-tantalum alloy layer, the hardness is greatly improved, and meanwhile, in order to enable the silver plating layer to have better brightness, N-hydroxy ethylenediamine trisodium triacetate is used as a complexing agent of the soluble tantalum salt. And other components abandon the traditional substances with high sulfur content such as carbon disulfide, polysulfide polymer and the like, and avoid the reduction of the hardness of the coating due to the introduction of a large amount of sulfur.
The invention has the beneficial effects that:
1. the additive does not add sulfur-containing substances, so that the hardness of a plating layer is not reduced;
2. after the additive is applied to specific silver plating, the obtained silver layer has the hardness of 225-245HV, the linear reciprocating friction test frequency reaches 5000 times, the conductivity is unchanged, the color change resistance is not less than 10 minutes, and the additive shows high hardness, excellent wear resistance and better color change resistance.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
As used herein, "and/or" includes any and all combinations of one or more of the associated listed items. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The exemplary invention described herein may suitably lack any one or more of the element limitations, which are not specifically disclosed herein. Thus, the terms "comprising," "including," "containing," and the like are to be construed broadly and without limitation. Furthermore, the terms used herein are used as terms of description and not of limitation, and there is no intention in the use of such terms to describe only some of their characteristics but, in the light of the claims, various modifications are possible within the scope of the invention. Thus, while the present invention has been particularly disclosed in terms of preferred embodiments and optional features, modification of the invention herein disclosed to embody it may be noted by those skilled in the art, and such modifications and variations are considered to be within the scope of the invention.
The raw materials or reagents used in the examples and comparative examples of the present invention are all purchased from mainstream manufacturers in the market, and those who do not indicate manufacturers or those who do not indicate concentrations are all analytical pure grade raw materials or reagents that can be obtained conventionally, and are not particularly limited as long as they can perform the intended functions. The apparatus such as the reaction vessel and the rotary evaporator used in the present example are not particularly limited as long as they can perform the intended function, and are commercially available from major manufacturers. The specific techniques or conditions not specified in this example were performed according to the techniques or conditions described in the literature in the art or according to the product specification.
Example 1
The wear-resistant silver plating brightening additive comprises the following raw materials in parts by weight per liter:
20 g of antimony potassium tartrate, 5 g of tantalum pentachloride, 150 g of potassium sodium tartrate, 3 g of imidazole, 15 g of trisodium N-hydroxyethylenediamine triacetate, 10g of 3,5-dinitrosalicylic acid, 20 mg of polyoxyethylene (9) nonylphenyl ether and 25 mg of tallow amine polyoxyethylene (15) ether.
The preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
s1. Material preparation
Preparing materials according to 1 liter of wear-resistant silver plating bright additive;
s2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt with a part of appropriate amount of water respectively, and mixing; and adding the rest raw materials, fully mixing, and performing constant volume to obtain the additive.
Example 2
The wear-resistant silver plating brightening additive comprises the following raw materials in parts by weight per liter:
25 g of antimony potassium tartrate, 10g of tantalum pentachloride, 160 g of potassium sodium tartrate, 5 g of imidazole, 20 g of trisodium N-hydroxyethylenediamine triacetate, 15 g of 3,5-dinitrosalicylic acid, 25 mg of polyoxyethylene (9) nonylphenyl ether and 30 mg of tallow amine polyoxyethylene (15) ether.
The preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
s1. Material preparation
Preparing materials according to 1 liter of wear-resistant silver plating bright additive;
s2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt with a part of appropriate amount of water respectively, and mixing; and adding the rest raw materials, fully mixing, and performing constant volume to obtain the additive.
Example 3
The wear-resistant silver plating brightening additive comprises the following raw materials in parts by weight per liter:
23 g of antimony potassium tartrate, 7 g of tantalum pentachloride, 155 g of potassium sodium tartrate, 4 g of imidazole, 17 g of trisodium N-hydroxyethylenediamine triacetate, 13 g of 3,5-dinitrosalicylic acid, 23 mg of polyoxyethylene (9) nonylphenyl ether and 27 mg of tallow amine polyoxyethylene (15) ether.
The preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
s1. Material preparation
Preparing materials according to 1 liter of wear-resistant silver plating bright additive;
s2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt with a part of appropriate amount of water respectively, and mixing; and adding the rest raw materials, fully mixing, and performing constant volume to obtain the additive.
Example 4
The wear-resistant silver plating brightening additive comprises the following raw materials in parts by weight per liter:
25 g of antimony potassium tartrate, 5 g of tantalum sulfate, 150 g of potassium sodium tartrate, 3 g of imidazole, 20 g of sodium nitrilotriacetate, 10g of 3,5-dinitrosalicylic acid, 21 mg of polyoxyethylene (9) nonylphenyl ether and 27 mg of tallow amine polyoxyethylene (15) ether.
The preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
s1. Material preparation
Preparing materials according to 1 liter of wear-resistant silver plating bright additive;
s2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt with a part of appropriate amount of water respectively, and mixing; and adding the rest raw materials, fully mixing, and performing constant volume to obtain the additive.
Example 5
The wear-resistant silver plating brightening additive comprises the following raw materials in parts by weight per liter:
24 g of antimony potassium tartrate, 4 g of tantalum pentachloride, 4 g of tantalum sulfate, 153 g of potassium sodium tartrate, 3.5 g of imidazole, 6 g of trisodium N-hydroxyethylenediamine triacetate, 6 g of sodium nitrilotriacetate, 6 g of diethylenetriamine pentacarboxylate, 14 g of 3,5-dinitrosalicylic acid, 22 mg of polyoxyethylene (9) nonylphenyl ether and 27 mg of tallow amine polyoxyethylene (15) ether.
The preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
the preparation method of the wear-resistant silver plating brightening additive comprises the following steps:
s1. Material preparation
Preparing materials according to 1 liter of wear-resistant silver plating bright additive;
s2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt in a part of appropriate amount of water, and mixing; and adding the rest raw materials, fully mixing, and performing constant volume to obtain the additive.
Comparative example 1
The wear-resistant silver plating brightening additive is not added with soluble tantalum salt, and other conditions are consistent with the embodiment;
comparative example 2
The wear-resistant silver plating brightening additive is not added with antimony potassium tartrate, and other conditions are consistent with the embodiment;
comparative example 3
The wear-resistant silver plating brightening additive is not added with a complexing agent, and the other conditions are consistent with the embodiment;
comparative example 4
Conventional brightening additives
The additives prepared in examples 1 to 5 and comparative example were used in the plating solution; other components of the electroplating solution are controlled as follows: 20-40g/L of silver cyanide potassium and 5-10g/L of potassium hydroxide; the current density is controlled at 0.5-4A/dm during electroplating 2 The anode-cathode ratio is greater than 2:1.
Counting the performance structures of the electroplating process and the silver layer obtained after electroplating, and summarizing to the following table
Therefore, from the above performance test results, it can be seen that the additives prepared in examples 1 to 5, after being applied to a specific silver plating treatment, can obtain a silver layer having a hardness of 225 to 245HV, a linear reciprocal friction test frequency of 5000 times, a constant conductivity, a discoloration resistance of 10min or more, and high hardness, excellent wear resistance, and good discoloration resistance.
The additive obtained by adding corresponding soluble tantalum salt is not added in the comparative example 1, after the additive is applied to specific silver plating treatment, the hardness of the obtained silver layer is 141HV, the linear reciprocating friction test times are 1500, the anti-discoloration performance is 4min, and the performances of the silver layer hardness, the linear reciprocating friction test times and the anti-discoloration performance are poor.
Comparative example 2 no additive obtained by adding antimony potassium tartrate was added, and after application to a specific silver plating treatment, the obtained silver layer had a hardness of 109HV, a number of linear reciprocal friction tests of 800, and an anti-discoloration property of 3min, and was inferior in silver layer hardness, number of linear reciprocal friction tests, and anti-discoloration property.
Comparative example 3 no additive obtained by adding a corresponding complexing agent was added, and after application to a specific silver plating treatment, the hardness of the obtained silver layer was 199HV, the number of times of the linear reciprocal friction test was 2500, and the anti-discoloration property was 6min, which was poor in the hardness of the silver layer, the number of times of the linear reciprocal friction test, and the anti-discoloration property.
Comparative example 4 is a conventional brightening additive, and after being applied to a specific silver plating treatment, the hardness of the obtained silver layer was 105HV, the number of times of the linear reciprocal friction test was 800, the anti-discoloration property was 2min, and the performance was the worst in the hardness of the silver layer, the number of times of the linear reciprocal friction test, and the anti-discoloration property.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the claims of the present invention, and all equivalent modifications made by the present invention, or directly or indirectly applied to other related fields.
Claims (8)
1. The wear-resistant silver plating brightening additive is characterized by comprising the following raw materials by weight per liter:
20-25 g of antimony potassium tartrate, 5-10g of soluble tantalum salt, 150-160 g of sodium potassium tartrate, 3-5 g of imidazole, 15-20 g of complexing agent, 3,5-dinitrosalicylic acid, 10-15 g of polyoxyethylene (9) nonylphenyl ether and 25-30 mg of tallow amine polyoxyethylene (15) ether.
2. A wear resistant silver plating brightening additive according to claim 1 wherein the soluble tantalum salt is any one of tantalum pentachloride and tantalum sulphate.
3. The abrasion-resistant silver plating brightening additive according to claim 1, wherein the complexing agent is any one or more of trisodium N-hydroxyethylenediamine triacetate, sodium aminotriacetate, and diethylenetriamine pentacarboxylate.
4. A wear-resistant silver plating brightening additive according to claim 1 wherein the weight ratio of antimony potassium tartrate, soluble tantalum salt, and potassium sodium tartrate in the additive is 5.
5. A wear resistant silver plating brightening additive according to claim 1 wherein the weight ratio of polyoxyethylenes (9) nonylphenyl ether, tallow amine polyoxyethylene (15) ether in the additive is 21.
6. A wear resistant silver plating brightening additive according to claim 1 comprising the following weight of raw materials per liter of additive:
21-24 g of antimony potassium tartrate, 6-9 g of soluble tantalum salt, 152-158 g of sodium potassium tartrate, 4 g of imidazole, 16-29 g of complexing agent, 11-14 g of 3,5-dinitrosalicylic acid, 21-24 mg of polyoxyethylene (9) nonylphenyl ether and 26-29 mg of tallow amine polyoxyethylene (15) ether.
7. A wear resistant silver plating brightening additive according to claim 1, comprising per litre of additive the following weight of raw materials:
23 g of antimony potassium tartrate, 7 g of soluble tantalum salt, 155 g of potassium sodium tartrate, 4 g of imidazole, 17 g of complexing agent, 3,5-dinitrosalicylic acid, 23 mg of polyoxyethylene (9) nonylphenyl ether and 27 mg of tallow amine polyoxyethylene (15) ether.
8. A process for the preparation of a wear resistant silver plating brightening additive according to any of claims 1 to 7 comprising the steps of:
s1. Material preparation
Preparing the wear-resistant silver plating brightening additive per liter by the following raw materials by weight:
20-25 g of antimony potassium tartrate, 5-10g of soluble tantalum salt, 150-160 g of potassium sodium tartrate, 3-5 g of imidazole, 15-20 g of complexing agent, 10-15 g of 3,5-dinitrosalicylic acid, 20-25 mg of polyoxyethylene (9) nonylphenyl ether and 25-30 mg of tallow amine polyoxyethylene (15) ether;
s2. Stirring and dissolving preparation
Dissolving antimony potassium tartrate, potassium sodium tartrate and soluble tantalum salt with water respectively, and mixing; and adding the rest raw materials, and fully mixing to obtain the additive.
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| CN202211443721.0A CN115726009A (en) | 2022-11-18 | 2022-11-18 | Wear-resistant silver-plated bright additive and preparation method thereof |
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| CN202211443721.0A CN115726009A (en) | 2022-11-18 | 2022-11-18 | Wear-resistant silver-plated bright additive and preparation method thereof |
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| CN202211443721.0A Pending CN115726009A (en) | 2022-11-18 | 2022-11-18 | Wear-resistant silver-plated bright additive and preparation method thereof |
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