Nano silver powder, along with flake-shaped and spherical silver powders, is mainly used in conductive pastes for polymer conductive materials. Depending on the oil absorption and conductivity requirements, different silver powders can be mixed and used. They have a wide range of applications in various fields such as scientific research, industry, and biotechnology. Some people think that they can disperse nanosilver powder directly in water after purchasing it, but this is not feasible. It can easily cause the powder to agglomerate. Effective dispersion of nanosilver powder can be achieved through the following methods:
Ultrasonic Dispersion
Ultrasonic dispersion is a common method for dispersing nanoparticles. By placing the nanosilver powder suspension in an ultrasonic bath, the vibration of the ultrasonic waves generates shear force and standing waves, thus helping to disperse the nanoparticles and prevent agglomeration.
Mechanical Stirring
By mechanically stirring the suspension, nanosilver powder can be evenly dispersed. Using appropriate stirring equipment (such as a magnetic stirrer, mechanical stirrer, etc.) under suitable conditions can effectively disperse the nanosilver powder.
Surface Active Agents
Surface active agents can form a layer of dispersant on the surface of the nanosilver powder, reducing the attractive force between particles and helping to disperse. Choosing the appropriate surface active agent can improve the dispersion effect. We commend the PVP to disperse.
In summary, the above three methods can effectively disperse nanosilver powder. The user should choose the most appropriate method for their own situation and follow the relevant instructions to ensure safety and effectiveness.
It is important to note that improper dispersion can cause poor conductivity and affect the performance of the final product. Therefore, it is necessary to choose the appropriate method and follow the instructions carefully to ensure the best dispersion effect.
In conclusion, dispersion of nanosilver powder is a crucial step in the preparation of conductive pastes. The user should carefully choose the appropriate method and follow the instructions to achieve the best possible dispersion.
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