Preparation method of silver-plated copper powder
A technology of silver-plated copper powder and copper powder, which is applied in the field of preparation of silver-plated copper powder, can solve the problems of high production cost and inapplicability to mass production, and achieve low cost, improved silver plating effect, and good oil removal effect Effect
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Embodiment 1
[0038] A preparation method of silver-plated copper powder, specifically comprising the steps of:
[0039] Step 1. Soak 1kg of copper powder in 1000mL of 5wt% sodium hydroxide solution, the temperature of the sodium hydroxide solution is 60°C and keep stirring for 30min;
[0040] Step 2. Weigh 0.1kg of ethylene glycol and mix it with an equal amount of water, and add the prepared ethylene glycol solution directly into step 1, continue to stir, then raise the temperature to 30°C and keep it warm;
[0041] Step 3. Add sodium hydroxide and ammonia water to deionized water until completely dissolved to obtain solution A. The pH of solution A is controlled at 9. Weigh 16g of silver nitrate and dissolve it in 100mL deionized water to obtain solution B. Slowly added to solution A under stirring conditions to prepare complexed silver salt solution, then raise the temperature to 30°C and keep it warm;
[0042]Step 4. Add the complexed silver salt solution obtained in step 3 to the cop...
Embodiment 2
[0046] A preparation method of silver-plated copper powder, specifically comprising the steps of:
[0047] Step 1. Soak 1kg of copper powder in 1000mL of 5wt% sodium hydroxide solution, the temperature of the sodium hydroxide solution is 70°C and keep stirring for 30min;
[0048] Step 2. Weigh 0.5kg of hydrazine hydrate and mix it with an equal amount of water, and add the prepared hydrazine hydrate solution directly into step 1, continue stirring, and then heat up to 30°C and keep it warm;
[0049] Step 3. Add sodium hydroxide and ammonia water to deionized water until completely dissolved to obtain solution A. The pH of solution A is controlled at 10. Weigh 32g of silver nitrate and dissolve it in 100mL deionized water to obtain solution B. Slowly added to solution A under stirring conditions to prepare complexed silver salt solution, then raise the temperature to 40°C and keep it warm;
[0050] Step 4. Add the complexed silver salt solution obtained in step 3 to the copper...
Embodiment 3
[0054] A preparation method of silver-plated copper powder, specifically comprising the steps of:
[0055] Step 1. Soak 1kg of copper powder in 1000mL of 5wt% sodium hydroxide solution, the temperature of the sodium hydroxide solution is 80°C and keep stirring for 30min;
[0056] Step 2. Weigh 0.5kg of ethylene glycol and 0.5kg of hydrazine hydrate and mix them evenly with 1kg of water. Add the prepared reducing agent solution directly into step 1, continue stirring, and then heat up to 30°C and keep it warm;
[0057] Step 3. Add sodium hydroxide and ammonia water to deionized water until completely dissolved to obtain solution A. The pH of solution A is controlled at 10. Weigh 48g of silver acetate and dissolve it in 100mL deionized water to obtain solution B. Slowly added to solution A under stirring conditions to prepare complexed silver salt solution, then raise the temperature to 40°C and keep it warm;
[0058] Step 4. Add the complexed silver salt solution obtained in s...
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