Study on Preparation and rheological properties of shear thickening fluid

The nano silica was used as the dispersed phase particle and the polyethylene glycol was used as the dispersed phase medium.The shear thickeing fluid(Thickening Fluid Shear, STF) which the SiO 2 solid content of STF was 9%, 12%, 15%, 17% and 20%.The different concentration different molecular weight and different temperaturesof the static theological properties was tested.Besides, the reversibility of STF was analyzed.The results show that different conditions have differernt effects on the static rheological properties of STF.However the shear rate changes from small to large or from big to small changes, two scanning curves almost coincide.It indicates that the shear thickening effect of STF dispersion system is reversible.