Meshed silver powder, as well as preparation method and application thereof
A technology of mesh silver powder and silver nitrate, applied in the direction of metal/alloy conductors, etc., can solve the problem of difficulty in ensuring circuit connection, and achieve the effects of good fluid permeability, good electrical conductivity and low resistance
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Embodiment 1
[0043] A kind of reticular silver powder is prepared by the following method:
[0044](1) Take 2kg of silver nitrate in the reaction kettle, add water to dissolve, add ammonia water to be mixed with silver ammonia solution; add the polyvinylpyrrolidone solution that has been dissolved in advance, add water and be mixed with 80L silver solution system, stir evenly, rotate Maintain the system temperature at 65°C at 20r / min.
[0045] (2) Weigh 250ml of hydrazine hydrate into the batching tank, add water to dilute, add 200ml of ammonia water, add water to prepare a 10L reduction solution system, add the solution to the reaction kettle within 60min, after the addition is complete, add 10g of gum arabic, and stir well .
[0046] (3) Weigh 0.6 kg of silver nitrate into the batching tank, add water to dissolve, prepare a 5L silver nitrate solution system, and add it dropwise to the reaction kettle within 30 minutes, so that a complex system containing silver powder, silver oxide, and...
Embodiment 2
[0050] A kind of reticular silver powder is prepared by the following method:
[0051] (1) take by weighing 2kg silver nitrate in reactor, add water to dissolve, add ammoniacal liquor, be mixed with silver ammonia solution; Add the polyvinylpyrrolidone solution that dissolves in advance containing 165g, add water and be mixed with the silver solution system of 80L, stir, The rotation speed is 20r / min, and the system temperature is maintained at 80°C.
[0052] (2) Weigh 1.1kg of ascorbic acid into the batching tank, add water to dissolve, add 120g of sodium hydroxide, add water to prepare a 10L reduction solution system, add the solution to the reaction kettle within 80min, after the addition is complete, add 10g of gelatin, and stir uniform.
[0053] (3) Weigh 0.6 kg of silver nitrate into the batching tank, add water to dissolve, prepare a 5L silver nitrate solution system, and add it dropwise to the reaction kettle within 30 minutes, so that a complex system containing silv...
Embodiment 3
[0057] A kind of reticular silver powder is prepared by the following method:
[0058] (1) Weigh 3kg of silver nitrate into the reaction kettle, add water to dissolve, add ammonia water, and make silver ammonia solution; add pre-dissolved polyvinyl alcohol solution containing 280g, make 85L silver solution system, stir well, stir The rotating speed is 20r / min, and the temperature of the system is maintained at 65°C.
[0059] (2) Weigh 0.35kg of hydroquinone into the batching tank, add water to dissolve, add 900g of sodium hydroxide, add water to dissolve to prepare a 5L reduction solution system, add the solution to the reaction kettle within 60min, after the addition is complete, add 10g of gelatin and stir well.
[0060] (3) Weigh 0.5kg of silver nitrate into the batching barrel, add water to dissolve it, and make a 5L silver nitrate solution system, drop it into the reaction kettle within 30min, and form a complex system containing silver powder, silver oxide, and silver i...
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