PREPARATION AND PROPERTIES OF HNT–SiO2 COMPOUNDED SHEAR THICKENING FLUID
Abstract
A novel shear thickening fluid (STF) obtained from a halloysite nanotube (HNT) and SiO2 compounded system was successfully prepared using HNT and nano-SiO2 as dispersed phases and polyethylene glycol 200 (PEG200) as the dispersion medium. The steady rheological behavior of the STF was investigated using a high-speed rotational rheometer, and the dispersion states of SiO2 and HNT in PEG200 were characterized by field emission scanning electron microscopy and transmission electron microscopy. Results show that HNT and SiO2 coexisted in the compounded system, and presented a special state that was both uniformly dispersed and partially enriched. The shear thickening effect of the STF was significantly enhanced by the enrichment of SiO2 loaded on the surface of HNTs in the compounded system.
