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Tin plating electrolyte

An electrolyte and tin plating technology, applied in the field of metal electrolytes, can solve the problems of poor solderability of the coating, high pollution, unstable plating solution, etc.

Inactive Publication Date: 2013-04-24
郎溪县金科金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional electroplating tin industry has the disadvantages of high pollution (such as fluoroborate, phenol sulfonate and halide, etc.), unstable plating solution (sulfate), and poor solderability of the coating.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Tin-plating electrolyte, the components in each liter of electrolyte are as follows: 90 g / L stannous methanesulfonate, 30 g / L stannous sulfate, 140 mg / L p-cresolsulfonic acid, 120 mg / L sulfosalicylic acid , hypophosphorous acid 50g / L, 2,2-dithiodipyridine 70mg / L, 8-hydroxyquinoline 25mg / L, catechol 30mg / L, 2,2-dihydroxydiethylsulfide 15g / L, Cetylpyridinium bromide 10mg / L, dodecylphenol polyoxyethylene ether 12g / L, ethylene glycol 10g / L, benzylidene acetophenone 8g / L, sodium hexametaphosphate 10g / L, Dialkyl sodium sulfate 8g / L, the rest is deionized water.

[0009] Electrolysis conditions: Tin plating on steel plate, temperature is 20-40°C, electrolyte circulation period is 45-120min, electrolyte circulation mode is bottom in and top out, cathode current density is 100~160A / m2, cell voltage is 0.25~1.0V, The anode current density is 100~160A / m2, and the distance between the same poles is 80~160mm; during the electrolysis process, when the cell voltage rises to 1.0V, tha...

Embodiment 2

[0011] Tin-plating electrolyte, the components in each liter of electrolyte are as follows: 90 g / L stannous methanesulfonate, 30 g / L stannous sulfate, 140 mg / L p-cresolsulfonic acid, 120 mg / L sulfosalicylic acid , hypophosphorous acid 50g / L, 2,2-dithiodipyridine 70mg / L, 8-hydroxyquinoline 25mg / L, catechol 30mg / L, 2,2-dihydroxydiethylsulfide 15g / L, Cetylpyridinium bromide 10mg / L, dodecylphenol polyoxyethylene ether 12g / L, ethylene glycol 10g / L, benzylidene acetophenone 8g / L, sodium hexametaphosphate 10g / L, Dialkyl sodium sulfate 8g / L, the rest is deionized water.

[0012] After the electrolyte solution is loaded into the electrolytic cell, 30-40 grams of activated clay is prepared for each liter of electrolyte solution and deposited at the bottom of the electrolytic cell. Greatly reduces the possibility of impurity particles in the electrolyte being adsorbed to the tinned cathode plate. Improved plating quality.

[0013] Electrolysis conditions: Tin plating on steel plate, t...

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PUM

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Abstract

The invention discloses tin plating electrolyte. The tin plating electrolyte comprises the following components 60 to 90g / L of tin methane sulfonate, 10 to 30g / L of tin sulfate, 110 to 140mg / L of p-cresolsulphonic acid, 60 to 120mg / L of sulfosalicylic acid, 30 to 50g / L of phosphinic acid, 45 to 70mg / L of 2,2-PySSPy, 15 to 25mg / L of 8-hydroxyquinoline, 20 to 30mg / L of catechins, 10 to 15g / L of 2,2-dihydroxy diethyl sulfide, 5 to 10mg / L of hexadecylpyridinium bromide, 8 to 12 g / L of dodecyl-phenol polyoxyethylene ether, 5 to 10g / L of ethylene glycol, 4 to 8g / L of benzalacetophenone, 5 to 10g / L of sodium hexametaphosphate, 4 to 8g / L of sodium dodecyl sulfate, and the balance of deionized water. According to the tin plating electrolyte, Sn2<+> can be effectively restrained to convert into Sn4 <+> in an electrolytic process by improving an electrolyte formula, and the stability of plating solution is improved; and meanwhile, the throwing power of the electrolyte is increased, and the luminance, the corrosion resistance and the welding performance of tin coatings are improved.

Description

technical field [0001] The invention relates to a metal electrolyte, in particular to a tin-plating electrolyte. Background technique [0002] At present, tinplate is a cold-rolled low-carbon thin steel plate or steel strip coated with pure tin on both sides. It combines the strength and formability of steel with the corrosion resistance, weldability and beauty of tin. It has the advantages of non-toxicity, good ductility and good corrosion resistance. Its surface is shiny and is widely used in medicine. It is one of the most popular steel products in industries such as light industry, automobile and home appliances. The traditional electroplating tin industry has the disadvantages of high pollution (such as fluoroborate, phenol sulfonate and halide, etc.), unstable plating solution (sulfate), and poor solderability of the coating. Contents of the invention [0003] The purpose of the present invention is to provide a high-performance tin-plating electrolytic solution ...

Claims

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Application Information

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IPC IPC(8): C25D3/32
Inventor 胡小照
Owner 郎溪县金科金属有限公司
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