The effects of technologic parameters on the rheological properties of the SiO₂/PEG disperse system and mechanism analysis

In this paper, the influence of synthesis temperature and dispersion time on the rheological properties of silica dispersions was studied with a stress controlled rheometer. The results show that as the synthesis temperature increases, the systems shows more obvious shear thickening and higher apparent viscosity, meanwhile, over dispersion time the systems shows less obvious shear thickening and smaller apparent viscosity, the mechanism about the effect of the synthesis temperature and dispersion time on the rheological properties of silica dispersions was explored by future study, and the study shows that synthesis temperature and the dispersion time can change the content of the gas phase, which has some influence on the rheological properties of the dispersions, the properties of shear thickening improvemed and the apparent viscosity increased as the gas phase in the system increased.