PVP immobilized SiO2 nanospheres for high-performance shear thickening fluid
PVP immobilized SiO2 nanospheres for high-performance shear thickening fluid
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用于高性能剪切增稠流体的 PVP 固定 SiO2 纳米球
DOI：
10.1007/s11051-017-3911-x
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发表时间：
2017-06
影响因子：
2.5
通讯作者：
Gong Xinglong
中科院分区：
文献类型：
--
作者：
Liu Mei;Chen Qian;Wang Sheng;Bai Linfeng;Sang Min;Jiang Wanquan;Xuan Shouhu;Gong Xinglong
AbstractWe develop a modified method to improve the rheological performance of SiO2-based shear thickening fluid (STF). Directly adding surfactant into STF is the most common method to improve the rheological performance of SiO2-based STF. However, the final viscosity increases quickly with the increase of shear rate, which is against for the practical applications. In this work, SiO2 nanospheres are firstly modified by PVP K30 through an ethanol refluxing method and the modified SiO2 nanospheres are used to prepare PVP@SiO2-STF. Compared with the unmodified SiO2 based STF (SiO2-STF), the PVP@SiO2-STF presents an obvious increase of shear thickening (ST) effects and the maximum viscosity increases by 7 times and the critical shear rates decrease about 10 times approximately. A reasonable explanation is proposed to interpret the influence of the modification methods on the rheological properties of STF. This work provides a new way to control the shear thickening behavior and also contributes to understand the mechanism of ST effect, which has an important significance to develop controllable STF.
Graphical abstractFigure PVP immobilized SiO2 based shear thickening fluid shows a dramatic improvement in shear thickening behavior (a, b, and c) and the illustration of the enhanced mechanism of shear thickening (d).
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影响因子：
2.3
作者：
Kalman, Dennis P.;Wagner, Norman J.
通讯作者：
Wagner, Norman J.
影响因子：
2.5
作者：
Kejing Yu;Haijian Cao;K. Qian;Xiaofei Sha;Yanping Chen
通讯作者：
Kejing Yu;Haijian Cao;K. Qian;Xiaofei Sha;Yanping Chen
影响因子：
3
作者：
Jason Swei;J. Talbot
通讯作者：
Jason Swei;J. Talbot
影响因子：
2.5
作者：
Jianbin Qin;Guangcheng Zhang;Xuetao Shi;Mingjiang Tao
通讯作者：
Jianbin Qin;Guangcheng Zhang;Xuetao Shi;Mingjiang Tao
影响因子：
3.9
作者：
Vincent T. O'Brien and;M. Mackay
通讯作者：
Vincent T. O'Brien and;M. Mackay