A kind of manufacturing method of the conductive silver powder that is used for touch screen uv type laser engraving silver paste
A technology of laser engraving and manufacturing method, which is applied in the field of silver powder for touch screen silver paste, can solve the problems of unsatisfactory use of UV-type laser engraving silver paste, rough surface of lines, large filling amount, etc., achieve excellent conductivity and photocuring effect, meet Electrical performance requirements, the effect of fast drying speed
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Embodiment 1
[0031] Embodiment 1: a kind of manufacture method of the conductive silver powder that is used for touch screen UV type laser engraving silver paste, it is characterized in that: adopt precipitation transformation method to prepare fine powder, comprise following production steps:
[0032] (1) Accurately weigh 5kg of silver nitrate and 3kg of sodium carbonate, add 5kg of silver nitrate and 40kg of deionized water into the reaction kettle, stir and dissolve, keep the temperature at room temperature, and obtain a silver nitrate solution with a concentration of 0.5-1.0mol / L ;
[0033] (2) Dissolve 3kg of sodium carbonate in 20kg of deionized water to obtain a sodium carbonate solution with a concentration of 0.5-1.0mol / L, and then add the sodium carbonate solution into the reactor at a rate of 0.383kg / min to mix with silver nitrate The solution undergoes a chemical reaction, and the addition time is 60 minutes;
[0034] (3) After the addition is completed, adjust the temperature...
Embodiment 2
[0038] Embodiment 2: a kind of manufacture method of the conductive silver powder that is used for touch screen UV type laser engraving silver paste, it is characterized in that: adopt precipitation transformation method to prepare fine powder, comprise following production steps:
[0039] (1) Accurately weigh 5kg of silver nitrate and 3kg of sodium carbonate, add 5kg of silver nitrate and 40kg of deionized water into the reactor and stir to dissolve, keep the constant temperature at 60°C, and obtain silver nitrate with a concentration of 0.5-1.0mol / L solution;
[0040] (2) Dissolve 3kg of sodium carbonate in 20kg of deionized water to obtain a sodium carbonate solution with a concentration of 0.5-1.0mol / L, then add the sodium carbonate solution into the reaction kettle at a rate of 2.3kg / min and silver nitrate The solution undergoes a chemical reaction, and the addition time is 10 minutes;
[0041] (3) After the addition is completed, adjust the temperature to 80°C, pour 700...
Embodiment 3
[0045] Embodiment 3: a kind of manufacture method of the conductive silver powder that is used for touch screen UV type laser engraving silver paste, it is characterized in that: adopt precipitation transformation method to prepare fine powder, comprise following production steps:
[0046] (1) Accurately weigh 5kg of silver nitrate and 3kg of sodium carbonate, add 5kg of silver nitrate and 40kg of deionized water into the reactor and stir to dissolve, keep the constant temperature at 40°C, and obtain silver nitrate with a concentration of 0.5-1.0mol / L solution;
[0047] (2) Dissolve 3kg of sodium carbonate in 20kg of deionized water to obtain a sodium carbonate solution with a concentration of 0.5-1.0mol / L, then add the sodium carbonate solution into the reaction kettle at a rate of 0.575kg / min and silver nitrate The solution undergoes a chemical reaction, and the addition time is 40 minutes;
[0048] (3) After the addition is completed, adjust the temperature to 60°C, pour 3...
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