Cyanide-free silver plating brightening agent and preparing method thereof
A technology of silver light and solvent, which is applied in the field of cyanide-free silver plating, can solve the problems of poor coating appearance and non-bright appearance, and achieve better wear resistance, refined grains, and obvious bright effect
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Embodiment 1
[0025] Embodiment 1, cyanide-free silver plating brightener of the present invention and preparation method thereof
[0026] Cyanide-free silver plating brightener of the present invention, with deionized water as solvent, comprises the component of following concentration: sodium dodecyl diphenyl sulfonate 10g / L, HEDTA 1g / L, potassium dihydrogen phosphate 0.5g / L , β-naphthol polyoxyethylene ether 10g / L, polyethylene glycol 10g / L, urea 10g / L, 1-benzyl-1,2,3,4-tetrahydroisoquinoline 10g / L and 2- Methyltetrahydrofuran-3-thiol 30g / L.
[0027] The preparation method of cyanide-free silver plating brightener of the present invention comprises the following steps:
[0028] S1. Measure the amount of sodium dodecyl dibenzene sulfonate, β-naphthol polyoxyethylene ether, polyethylene glycol and HEDTA into deionized water, stir until completely dissolved, the stirring speed is 100r / min, the stirring time Be 20min, obtain mixture A;
[0029] S2. Heat up to 40°C, measure the amount of 2...
Embodiment 2
[0031] Embodiment 2, cyanide-free silver plating brightener of the present invention and preparation method thereof
[0032] Cyanide-free silver plating brightener of the present invention, with deionized water as solvent, comprises the component of following concentration: sodium dodecyl diphenyl sulfonate 15g / L, HEDTA 1.5g / L, potassium dihydrogen phosphate 1.0g / L, β-naphthol polyoxyethylene ether 15g / L, polyethylene glycol 5g / L, urea 15g / L, 1-benzyl-1,2,3,4-tetrahydroisoquinoline 12g / L and 2 -Methyltetrahydrofuran-3-thiol 35g / L.
[0033] The preparation method of cyanide-free silver plating brightener of the present invention comprises the following steps:
[0034] S1. Measure the amount of sodium dodecyl dibenzene sulfonate, β-naphthol polyoxyethylene ether, polyethylene glycol and HEDTA into deionized water, stir until completely dissolved, the stirring speed is 150r / min, the stirring time Be 20min, obtain mixture A;
[0035] S2. Heat up to 40°C, measure the amount of ...
Embodiment 3
[0037] Embodiment 3, cyanide-free silver plating brightener of the present invention and preparation method thereof
[0038] Cyanide-free silver plating brightener of the present invention, with deionized water as solvent, comprises the component of following concentration: sodium dodecyl diphenyl sulfonate 20g / L, HEDTA 2.0g / L, potassium dihydrogen phosphate 1.5g / L L, β-naphthol polyoxyethylene ether 22g / L, polyethylene glycol 8g / L, urea 15g / L, 1-benzyl-1,2,3,4-tetrahydroisoquinoline 13g / L and 2 -Methyltetrahydrofuran-3-thiol 40g / L.
[0039] The preparation method of cyanide-free silver plating brightener of the present invention comprises the following steps:
[0040] S1. Measure the amount of sodium dodecyl dibenzene sulfonate, β-naphthol polyoxyethylene ether, polyethylene glycol and HEDTA into deionized water, stir until completely dissolved, the stirring speed is 170r / min, the stirring time Be 25min, obtain mixture A;
[0041]S2. Warm up to 45°C, measure the amount of ...
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