Fundamental Research on the Preparation of Homogeneous Multi Component Particle Paste

Abstract

In manufacturing processes using slurries, particle dispersion control is important for optimizing product properties. However, the preparation of slurries is not easy due to the various parameters involved in dispersion control. In this study, we tried to clarify the effect of kneading process (In this study, kneading process is defined as a method of preparing a slurry by kneading at a high particle concentration and then diluting.) conditions on the dispersion state of particles, especially on their homogeneity, to provide a guideline for dispersion control. Slurries consisting of two types of particles, large and small, were prepared. The key parameter in slurry preparation was the particle concentration during the kneading process. We evaluated the slurries by measuring both flow characteristics and particle size distribution. As a result, particle dispersion was promoted, and the distribution became sharper as the particle concentration increased during kneading process. However, the effectiveness diminished when the concentration exceeded a certain threshold. These results suggest that a homogeneous dispersion can be created by adjusting the particle concentration during kneading process.