Investigation on Dispersive Behavior of TiO2-H2O Nanofluids

被引：3
|
作者：
Wang, X. J. [1 ]
Li, X. F. [2 ]
Li, Z. Z. [1 ]
Lin, F. [1 ]
机构：
[1] South China Agr Univ, Coll Sci, Guangzhou 510642, Guangdong, Peoples R China
[2] Zhongshan Torch Polytechn, Dept Packaging & Printing, Zhongshan 528436, Guangdong, Peoples R China
来源：
RESEARCH ON MATERIAL ENGINEERING AND MANUFACTURING ENGINEERING | 2014年 / 468卷
基金：
中国国家自然科学基金;
关键词：
Nano-titanium dioxide; dispersant; dispersion and stability; THERMAL-CONDUCTIVITY ENHANCEMENT; SUSPENSIONS;
D O I：
10.4028/www.scientific.net/AMM.468.49
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper investigated the effects of different pH and dispersant concentration on the dispersion of TiO2 - H2O by the measuring zeta potential and absorbency. The results show that the absolute value of zeta potential and the absorbency are higher at pH approximate to 8-10. Sodium dodecyl sulfate (SDS) can significantly increase the absolute value of zeta potential of particle surfaces by electrostatic repulsions, which leads to the enhancement of the stability for TiO2 nano-suspensions. 0.1%(Mass fraction) TiO2 nano-suspensions has the best dispersion at the SDS optimizing concentration 0.045 %. The results also show the zeta potential has good corresponding relation with absorbency, and the higher absolute value of zeta potential and the absorbency are, the better dispersion and stability in system is.
引用
收藏
页码：49 / +
页数：2
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