Experimental Investigation on Viscosity of Cu-H_2O Nanofluids

作     者：李新芳 LI Xinfang1,ZHU Dongsheng2,WANG Xianju2,3 (1. Department of Packaging & Printing, Zhongshan Torch Vocation and Technology College, Zhongshan 528436, China;2. Key Lab of Enhanced Heat Transfer and Energy Conservation,Ministry of Education, South China University of Technology, Guangzhou 510641, China;3. Navy Arms of Services Command Academy, Guangzhou 510431, China )

作者机构：Department of Packaging & PrintingZhongshan Torch Vocation and Technology College 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2009年第24卷第1期

页      面：48-52页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Funded by Guangdong Provincial Natural Science Foundation (No. 04105950) Specialized Research Fund for the Doctoral Program of Higher Education (No. 20050561017) Program for New Century Excellent Talents in University (No. NCET-04-0826) 

主　　题：nano-Cu/water suspension SDBS kinematic viscosity capillary viscometer 

摘      要：A procedure for preparing a nanofluid that a solid-liquid composite material consists of solid nanoparticles with sizes typically of 1-100 nm suspended in liquid was proposed. By means of the procedure, Cu-H2O nanofluids with and without dispersant were prepared, whose sediment pho-tographs and particle size distribution were given to illustrate the stability and evenness of suspension with dispersant. The viscosity of Cu-H2O nanofluid was measured using capillary viscometers. The mass fractions（w） of copper nanoparticles in the experiment varied between 0.04% and 0.16% with the temperature range of 30-70 ℃. The experimental results show that the temperature and SDBS concentration are the major factors affecting the viscosity of the nano-copper suspensions, while the effect of the mass fraction of Cu on the viscosity is not as obvious as that of the temperature and SDBS dispersant for the mass fraction chosen in the experiment. The apparent viscosity of the copper nano-suspensions decreases with the temperature increase, and increases slightly with the increase of the mass fraction of SDBS dispersant, and almost keeps invariability with increasing the mass fraction of Cu. The influence of SDBS concentration on the viscosity of nano-suspension was relatively large comparing with that of the nanoparticle concentration.