User’s dilemma: Case
Mixing of high-viscosity binder and powder
We conduct research and development of heat dissipation ceramic components. The materials we use include powder of alumina, titanium oxide, etc. and various resin binders.
Basically, we would manually mix materials, but were unable to deliver the expected results when we mixed a large amount of powder and a high-viscosity binder. As powder has cohesive properties, even a small amount of powder is difficult to mix uniformly. As the amount of powder added becomes larger, the binder becomes more viscous, so lumps often formed. We were unable to produce the ideal slurry even by adding and remixing more binder.
Sometimes, we were able to make lumps less noticeable by sieving powder before mixing, but this was not reproducible.
Our goal is to achieve evaluation or verification results with a certain quantity suitable for products under development, so we cannot reduce the amount of powder. The problem of uniform mixing is directly associated with the problem of slurry adjustment accuracy.
If we could not blend powder with a high-viscosity binder under certain conditions, we would not achieve the target product quality. We needed to fundamentally change our methods, and were looking for the optimal solution every day.