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Alkaline cyanide-free brush plating solution for multielement coordination system and preparation method of alkaline cyanide-free brush plating solution

A technology of brush plating and coordination, applied in the field of brush plating, can solve the problem of easy yellowing and discoloration of the coating, and achieve the effect of good bonding and uniform structure

Active Publication Date: 2019-09-10
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the technical problems existing in the above-mentioned prior art, the purpose of this invention is to provide a kind of alkaline cyanide-free electric brush plating solution of multiple coordination system, its preparation method and coating, and this electric brush plating solution is succinimide system, which can effectively solve the problem that the traditional succinimide system silver plating is prone to yellowing and discoloration after shelving, and the thickness and hardness of the silver plating layer obtained can reach the standard

Method used

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  • Alkaline cyanide-free brush plating solution for multielement coordination system and preparation method of alkaline cyanide-free brush plating solution
  • Alkaline cyanide-free brush plating solution for multielement coordination system and preparation method of alkaline cyanide-free brush plating solution
  • Alkaline cyanide-free brush plating solution for multielement coordination system and preparation method of alkaline cyanide-free brush plating solution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of alkaline cyanide-free electric brush plating solution of multiple coordination system, comprises solvent water and following component:

[0043] AgNO 3 90g / L, 260g / L succinimide, 180g / L 5,5-dimethylhydantoin, 120g / L potassium pyrophosphate, 30g / L ammonium acetate, 250g / L potassium methanesulfonate, Potassium carbonate 25g / L, bismuth nitrate 2g / L, bipyridine 1g / L, thiosemicarbazide 0.8g / L, adjust the pH of the plating solution to be 9.

[0044] The preparation method of the alkaline cyanide-free brush plating solution of this multiple coordination system comprises the steps:

[0045] Mix and dissolve alkali, succinimide and 5,5-dimethylhydantoin to obtain a mixed solution;

[0046] Under stirring, slowly inject the silver nitrate solution into the mixed solution to obtain the second mixed solution;

[0047] Add potassium pyrophosphate and potassium methanesulfonate to the second mixed solution, dissolve completely, and add alkali to adjust the pH value of the...

Embodiment 2

[0052] A kind of alkaline cyanide-free electric brush plating solution of multiple coordination system, comprises solvent water and following component:

[0053] AgNO 3 80g / L, 300g / L succinimide, 100g / L 5,5-dimethylhydantoin, 80g / L potassium pyrophosphate, 160g / L potassium methanesulfonate, 40g / L ammonium acetate, Potassium carbonate 30g / L, bismuth nitrate 3g / L, bipyridine 0.8g / L, thiosemicarbazide 1.0g / L, adjust the pH of the plating solution to be 8.5.

[0054] The preparation method of the alkaline cyanide-free brush plating solution of multiple coordination system comprises the steps:

[0055] Mix and dissolve alkali, succinimide and 5,5-dimethylhydantoin to obtain a mixed solution;

[0056] Under stirring, slowly inject the silver nitrate solution into the mixed solution to obtain the second mixed solution;

[0057] Add potassium pyrophosphate and potassium methanesulfonate to the second mixed solution, dissolve completely, and add alkali to adjust the pH value of the...

Embodiment 3

[0060] A kind of alkaline cyanide-free electric brush plating solution of multiple coordination system, comprises solvent water and following component:

[0061] AgNO 3 160g / L, 240g / L succinimide, 200g / L 5,5-dimethylhydantoin, 160g / L potassium pyrophosphate, 320g / L potassium methanesulfonate, 15g / L ammonium acetate, Potassium carbonate 15g / L, bismuth nitrate 1.5g / L, bipyridine 1.2g / L, thiosemicarbazide 1.0g / L, adjust the pH of the plating solution to be 10.

[0062] The preparation method of the alkaline cyanide-free brush plating solution of multiple coordination system comprises the steps:

[0063] Mix and dissolve alkali, succinimide and 5,5-dimethylhydantoin to obtain a mixed solution;

[0064] Under stirring, slowly inject the silver nitrate solution into the mixed solution to obtain the second mixed solution;

[0065] Add potassium pyrophosphate and potassium methanesulfonate to the second mixed solution, dissolve completely, and add alkali to adjust the pH value of ...

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Abstract

The invention discloses an alkaline cyanide-free brush plating solution for a multielement coordination system and a preparation method of the alkaline cyanide-free brush plating solution. The alkaline cyanide-free brush plating solution is prepared from solvent water and the following components: 80 to 160 g / L of AgNO3, 240 to 300 g / L of succinimide, 100 to 200 g / L of 5,5-dimethyl hydantoin, 80 to 160 g / L of potassium pyrophosphate, 160 to 320 g / L of potassium methanesulfonate, 15 to 40 g / L of ammonium acetate, 15 to 30 g / L of potassium carbonate, 1.5 to 3 g / L of bismuth nitrate, 0.8 to 1.2 g / L of dipyridyl and 0.6 to 1.0 g / L of thiosemicarbazide. The pH value of the plating solution is adjusted to 8.5 to 10. The succinimide system can effectively solve the problem that a coating is easyto yellow and discolor after being set aside in the silver plating process of a traditional succinimide system; in addition, the thickness and the hardness of an obtained silver coating both can reachthe standards.

Description

technical field [0001] The invention belongs to the technical field of electric brush plating, and in particular relates to an alkaline cyanide-free electric brush plating solution of a multi-component coordination system, a preparation method thereof and a coating. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] High-voltage isolating switch is a very important common electrical equipment in the power system. It realizes isolating power supply, switching operation, and connecting and cutting off small current circuits through the opening and closing of dynamic and static contacts. The main performance and life of the switchgear vary greatly. Much depends on the quality o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/46C25D5/06
CPCC25D3/46C25D5/06
Inventor 李新梅杜宝帅索帅张忠文邓化凌张鲁宁步衍江张广成
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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