The Preparation and Characterization of Water-Based Pigment Paste

摘要

The different water-based pigment paste was prepared using copper phthalocyanine blue pigment and dispersion resin, the influences of different pre-dispersion speed on dispersion of pigment paste were also investigated. And the characterization of the different pastes was investigated by rheology behavior, dynamic light scattering (DLS) and scanning electron microscopy (SEM) respectively. The results showed that the results measured by dynamic light scattering the best dispersion of the pigment paste was made when the pre-dispersion speed at 1000 rpm. But the results evaluated by rheology behavior showed that the best dispersion was when the pre-dispersion speed at 1500 rpm. Then the additional technique such as scanning electron microscopy was employed for proofing of pigment pastes. The SEM images of different samples are compared, and it is found that when the pre-dispersion speed at 1500 rpm, the pigment paste samples with good dispersion. Based on the results from different assessment methods, the pigment paste with best dispersion were prepared when pre-dispersion speed at 1500 rpm.