様々な圧力測定を利用したスラリー中の粒子分散・凝集状態評価

抄録

In this paper, we introduce novel slurry characterization techniques, the hydrostatic pressure measurement and the osmotic pressure measurement. In the hydrostatic pressure measurement, the particles dispersion and flocculation state in the slurry containing the micron or sub-micron particles be determined from the decreasing rate of its hydrostatic pressure (the time change of the hydrostatic pressure). The hydrostatic pressures of single and multi component slurries are introduced and their particles dispersion and flocculation states are discussed.

On the other hand, the osmotic pressure measurement can evaluate the particles dispersion and flocculation state in slurries containing the nano particles. It was demonstrated that the osmotic pressure of the nano particles slurry increased as the particles in the slurry well dispersed, corresponding to the particles concentration of the sampled slurry after ultracentrifugation.