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High-stability water-base silver-plating protective agent and preparation method thereof

A technology of high stability and protective agent, applied in the direction of coating, etc., can solve the problems of poor stability of protective layer, poor stability of protective agent, and improved silver surface protection effect, so as to improve service life, improve stability, and high stability Effect

Inactive Publication Date: 2018-06-22
SUZHOU HIYIE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-soluble protective agent also has its own defects, which are mainly reflected in the poor stability of the protective agent itself, the poor stability of the protective layer formed on the silver surface, and the protective effect on the silver surface still needs to be improved.

Method used

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  • High-stability water-base silver-plating protective agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 60g of stearyl mercaptan and 6g of trimethyl mercapto phosphate at 60°C and mix thoroughly to form Agent A, take 30g of Pingpingjia O, 30g of oleyl alcohol polyoxyethylene ether, and 10g of mercaptosuccinic acid to dissolve In 860mL of deionized water, mix thoroughly at 60°C to form agent B, at 60°C, stir agent A and agent B with a stirrer at 400 rpm for 3 hours to fully emulsify, add 100mg of graphite to the mixture Then make up the mixture to 1000ml, and use an ultrasonic disperser to ultrasonically disperse it under 30Khz ultrasonic waves for 6 hours to obtain a high-stability water-based silver plating protection agent.

Embodiment 2

[0040] Take 80g of octadecyl mercaptan and 8g of trimethyl mercapto phosphate and mix it well at 60°C to form Agent A. Take 60g of Pingpingjia O and 10g of mercaptosuccinic acid and dissolve it in 840mL of deionized water. Mix well at 60°C to form Agent B. Stir Agent A and Agent B with a stirrer at a speed of 400 rpm for 3 hours to fully emulsify at 60°C. Add 100 mg of graphene to the mixture, and make up the mixture to 1000ml, use an ultrasonic disperser to ultrasonically disperse under 30Khz ultrasonic waves for 6 hours to obtain a high-stability water-based silver plating protection agent.

Embodiment 3

[0042] Take 80g of octadecyl mercaptan and 8g of trimethyl mercapto phosphate at 60°C and mix thoroughly to form Agent A. Take 60g of alkylphenol polyoxyethylene ether and 10g of 6-mercaptocaproic acid and dissolve them in 840mL In deionized water, mix thoroughly at 60°C to form agent B, and at 60°C, stir agent A and agent B with a stirrer at a speed of 400 rpm for 3 hours to fully emulsify, add 100 mg of graphene to the mixture, Then make up the mixed solution to 1000ml, and use an ultrasonic disperser to ultrasonically disperse it under 30Khz ultrasonic waves for 6 hours to obtain a high-stability water-based silver plating protection agent.

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Abstract

The invention provides a high-stability water-based silver-plating protective agent. Every liter of the high-stability water-based silver-plating protective agent comprises 40-100 g of octadecanethiol, 4-10 g of trimethyl mercapto phosphate, 100 mg of reduced graphene oxide, 40-100 g of an emulsifier, 10 g of a stabilizer and the balance deionized water. The high-stability water-based silver-plating protective agent adopts the stabilizer and graphene, so that the service life of the protective agent is prolonged, and the corrosion resistance and color change resistance of protected metal are improved; and the surface appearance and performance of the silver-plating layer protected by the protective agent are not affected, a potassium sulfide resistance test of electronic products can be maintained for more than 12 minutes, and the protection time is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a high-stability water-based silver plating protectant. Background technique [0002] Metal silver has become one of the most widely used precious metals due to its excellent performance and relatively low price. Among all metals, silver has the best electrical conductivity, and has good thermal conductivity, brazing, and corrosion resistance. And stability, so metallic silver is widely used in communications, electronics, and electrical products. But silver is a precious metal after all, so silver is generally used as a coating to improve the performance of metal substrate parts, but if it is exposed to the working environment for a long time, the silver coating is easily corroded by sulfides and halides, which will cause the surface to change color. , affecting its product performance. [0003] In recent years, the problem of corrosion and discoloration on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/08C09D5/00
CPCC09D5/00C23F11/08
Inventor 徐英君赵东军王泽波
Owner SUZHOU HIYIE CHEM CO LTD
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