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Silver plating anti-color changing protecting agent composition

A technology of protective agent and composition, which is applied in the field of silver-plated anti-tarnish protective agent composition, can solve problems such as vulcanization and discoloration, influence on conductivity, solderability and appearance, loss of original luster, etc., to maintain metallic luster, Improve the anti-vulcanization performance and wear resistance, and prevent the effect of vulcanization and discoloration

Inactive Publication Date: 2010-07-28
JIANGXI SCI & TECH NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Electroplated silver products are easy to vulcanize and change color in the air and lose their original luster, which affects conductivity, solderability and appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A silver-plated anti-tarnish protective agent composition is made of the following raw materials (percentage by weight): fatty alcohol polyoxyethylene ether 13%, 1-phenyl-5 mercaptotetrazolium 8%, 2-mercaptobenzoxazole 4% %, tert-dodecanethiol 3%, 2-mercaptobenzimidazole 3%, absolute ethanol 8%, ethylene glycol 8%, deionized water balance.

[0012] Its preparation method is: mix deionized water, absolute ethanol, ethylene glycol, fatty alcohol polyoxyethylene ether, 1-phenyl-5-mercaptotetrazolium, 2-mercaptobenzoxazole, t-dodecylsulfur Mix alcohol and 2-mercaptobenzimidazole, heat to 45-50°C, stir evenly and then cool.

Embodiment 2

[0014] A silver-plated anti-tarnish protective agent composition is made of the following raw materials (percentage by weight): 15% of fatty alcohol polyoxyethylene ether, 10% of 1-phenyl-5-mercaptotetrazolium, 5% of 2-mercaptobenzoxazole %, tert-dodecanethiol 5%, 2-mercaptobenzimidazole 5%, absolute ethanol 10%, ethylene glycol 10%, deionized water balance.

[0015] Its preparation method is identical with embodiment 1.

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PUM

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Abstract

The invention relates to a silver plating anti-tarnish protectant compound. The protectant compound comprises the following components in percentage by weight: 13 to 15 percent of aliphatic alcohol polyoxyethylene ether, 8 to 10 percent of 1-phenyl-pentasulfhydyl tetrazole, 4 to 5 percent of 2-sulfhydryl benzoxazole, 3 to 5 percent of t-dodecyl mercaptan, 3 to 5 percent of 2-sulfhydryl benzimidazole, 8 to 10 percent of anhydrous ethanol, 8 to 10 percent of ethylene glycol, and the balance of deionized water. The silver plating anti-tarnish protectant compound forms a protective complex film on a silver surface, has a higher corrosion inhibition rate, and obviously improves the sulfidation resistance and abrasion resistance of the silver surface. The silver plating anti-tarnish protectant compound is mainly used for the tarnish prevention of silvered electronic parts and components, and is also applied to the sulfidation and tarnish prevention of silver or silvered jewellery, jewelry, ornaments, artwork, tableware, and the like. The silver plating anti-tarnish protectant compound can effectively protect silvered articles against sulfidation and tarnish in a certain period, keep theoriginal metal luster and has no influence on the conductivity and weldability of the parts.

Description

technical field [0001] The invention relates to a silver-plated anti-tarnish protective agent composition. Background technique [0002] Electroplated silver products tend to vulcanize and change color in the air and lose their original luster, which affects conductivity, solderability and appearance. The silver-plated layer is easy to change color during storage and transportation. In addition to the cracks and discoloration of the silver-plated layer caused by the imperfect electroplating process, the other reason is that silver and sulfur have a very high affinity in the air, especially in high temperature, high humidity and wind. In the presence of sulfur, a very small amount of hydrogen sulfide can cause silver sulfide to change color on the surface. Therefore, the research can effectively prevent the silver-plated parts from sulfidation and discoloration within a certain period of time, maintain the original metallic luster, and do not affect the conductivity of the pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/05
Inventor 王丽华谢小红马茶张青
Owner JIANGXI SCI & TECH NORMAL UNIV
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