Influence of Filler on the Rheological Properties of UV Curable Offset Ink

In order to investigate the influence of filler on the rheological properties of UV curable offset ink, ink samples with various varieties and contents of fillers were prepared, the flow curve, thixotropy, dynamic and viscoelastic properties have been tested, and the rheological properties UV offset ink samples with various varieties and contents of fillers have been discussed. The results indicated that: variety and content have great influence on the rheological properties of ink samples. Sample use SiO2 as filler has the highest viscosity, the largest thixotropy and G'; Sample use Talc as filler has the lowest viscosity, the largest thixotropy, while it's G' has no big difference from the sample use CaCO3. Along with the increase of filler content, the viscosity, thixotropy and G' will increase.