A new view on improving the preparation efficiency of shear thickening fluid

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

An, Chao^1 ; Xiang, Changlong^1 ; Jia, Qingxiu^1 ; Wang, Fadong^1

School of Materials Design and Engineering, Beijing Institute of Fashion Technology, Beijing

100029, China^1

关键词: Average particle size;    Critical shear rates;    Industrialized production;    Rheological property;    Shear thickening;    Shear thickening fluid;    Thickening ratio;    Uniform viscosity;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/3/032088/pdf
DOI  :  10.1088/1755-1315/295/3/032088

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, the relationship of rheological properties, particle size and particle size distribution of dispersed phase silica at different blending times during the preparation of STF was studied in detail. It is found that with the increase of blending time, the initial viscosity η0 of STF decreases, the critical shear rate γ c increases, the maximum thickening viscosity ηm decreases, the thickening ratio decreases and the shear thickening effect of the system shows a weakening trend. On the other, the volume average particle size of silica decreases gradually and finally reaches a stable value. The particle size distribution changed from double-interval distribution to single-interval distribution. The variation of shear thickening properties with blending time was explained by combining Cluster and Jamming theory. It is considered that the preparation of STF can be completed when the suspension is transparent and has a uniform viscosity. It is believed that this will play an important role in improving the efficiency of STF preparation and will be of great help to realize industrialized production of STF in the future.