A kind of conductive ink and sonochemical synthesis method for flexible printed electronics
A conductive ink and flexible printing technology, which is applied in the fields of nanotechnology, ink, and application for materials and surface science, can solve the problem of no disclosure of the preparation method of conductive nano-silver-coated copper ink, and achieve good oxidation resistance and conductivity. efficiency, easy availability of raw materials, and low sintering temperature
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Embodiment 1
[0054] (1) Weigh 8g of copper sulfate and add it to 80ml of glycerol solvent and mix well, continue to stir and then heat to 60°C, to obtain solution a after being completely dissolved; Weigh 6g of sodium hypophosphite as reducing agent, then weigh 5g Polyvinylpyrrolidone (K-20) was used as a protective agent. After mixing the two evenly, they were added to 100ml of glycerol to dissolve, and heated to 60°C after continuous stirring. After complete dissolution, solution b was obtained;
[0055] The solution b was placed in a pulsed ultrasonic device with a direct downward action, and after heating to 60 °C, the solution a was quickly poured into the solution b to react for 10 min. After the solution changed from light blue to reddish-brown, a copper nanoparticle solution was obtained. .
[0056] The obtained copper nanoparticle solution was cooled to room temperature, centrifuged and washed 4 times with deionized water at 3000 r / min, and pure copper nanoparticles were obtained....
Embodiment 2
[0063] (1) Weigh 6g of copper sulfate and add it to 70ml of glycerol solvent and mix well, continue to stir and heat to 50° C. After being completely dissolved, obtain solution a; Weigh 8g of sodium hypophosphite as reducing agent, then weigh 5g Polyvinylpyrrolidone (K-30) was used as a protective agent. After mixing the two evenly, they were added to 100ml of glycerol to dissolve, and heated to 50°C after continuous stirring. After complete dissolution, solution b was obtained;
[0064] The solution b was placed in a pulsed ultrasonic device with a direct downward action. After heating to 50 °C, the solution a was quickly poured into the solution b to react for 20 minutes. After the solution changed from light blue to reddish-brown, a copper nanoparticle solution was obtained. .
[0065] The obtained copper nanoparticle solution was cooled to room temperature, centrifuged and washed 4 times with deionized water at 3000 r / min, and pure copper nanoparticles were obtained.
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Embodiment 3
[0071] (1) Weigh 8g of copper sulfate and add it to 80ml of glycerol solvent and mix well, continue to stir and then heat to 60°C, to obtain solution a after being completely dissolved; Weigh 6g of sodium hypophosphite as reducing agent, then weigh 5g Polyvinylpyrrolidone (K-20) was used as a protective agent. After mixing the two evenly, they were added to 100ml of glycerol to dissolve, and heated to 60°C after continuous stirring. After complete dissolution, solution b was obtained;
[0072] The solution b was placed in a pulsed ultrasonic device with a direct downward action. After heating to 60 °C, the solution a was quickly poured into the solution b to react for 15 minutes. After the solution changed from light blue to reddish brown, a copper nanoparticle solution was obtained. .
[0073] The obtained copper nanoparticle solution was cooled to room temperature, centrifuged and washed 4 times with deionized water at 3000 r / min, and pure copper nanoparticles were obtained....
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