文献类型：期刊文献

英文题名：How to Decrease the Viscosity of Suspension with the Second Fluid and Nanoparticles?

作者：Xu, Menghan[1];Liu, Haifeng[1];Zhao, Hui[1];Li, Weifeng[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：3

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000326498200005)】；

基金：This research was supported by the National Basic Research Program of China (2010CB227005), and National Natural Science Foundation of China (21176079).

语种：英文

摘要：According to recent research reports, addition of small amounts of a secondary fluid to a suspension could dramatically increase viscosity of suspension. Results of this study indicate another interesting behavior that the secondary fluid could form a thin hydrophobic membrane around particle surface and significantly decrease the viscosity and yield stress of the suspension. To enhance the surface hydrophobicity, hydrophobic nanoparticles (nano-CaCO3) were added to the hydrophobic membrane of particles to improve the surface roughness, and to generate composite particles having a hierarchical structure similar to the micromorphology of lotus leaf. This composite particle has a higher contact angle, and the suspension of composite particles has a lower viscosity and a lower yield stress.