点击次数：

论文类型：期刊论文

发表时间：2017-10-02

发表刊物：SOFT MATERIALS

收录刊物：SCIE、EI、Scopus

卷号：15

期号：4

页面范围：315-324

ISSN号：1539-445X

关键字：Electrorheological fluids; electrostatic spraying method; polyvinylpyrrolidone (PVP); surfactants; yield stress

摘要：Adding surfactants is an effective method to promote the electrorheological (ER) effect of ER fluids. However, conventional fabrication method to prepare surfactants modified titanium oxide particles was complex. In this study, a facile electrostatic spraying (ES) method was used to prepare polyvinylpyrrolidone (PVP) modified TiO2 particles. The influence of PVP concentration, ejection rate, and ES field on particle size and morphology was investigated experimentally. ER fluids were fabricated with the TiO2/PVP particles and the bare TiO2 particles obtained by a hydrolysis method, respectively. The TiO2/PVP particles have monodispersed size and present core-shell structure. Compared with the TiO2 particles-based sample, the TiO2/PVP particles-based ER fluid presents more significant ER performance, more stable shear stability, and better sedimentation stability. The electrostatic spraying method has the potential for large-scale production of high-performance ER fluids.