Influence of Particle-Dispersant Compatibility on Rheological Properties of High Concentration Suspension

In this study, we investigated the influence of compatibility between the particle and the dispersant on the rheological property using condensed suspensions with different dispersants (epoxy or amine). In the general flow-curve, the samples have not difference. In the solid regime below the yield stress, the amine-based sample with good compatibility has the flow history as the increases of viscosity in the decrease segment on the hysteresis loop test. In the fluid regime of middle strain range, the thickening and hardening happens at the time of the reversal rotation on the amine-based sample. It is found that the good compatibility influences the wide strain range from the solid regime to the fluid regime as the flow history.