Investigation on Dispersive Behavior of Cu-H2O Nanofluids
In this paper, by measurement of the zeta potential and hydrodynamic diameter the surface modification and dispersive behavior of Cu nanoparticles in water were investigated under different pH values and different concentration of sodium dodecylbenzenesulfonate (SDBS) dispersant. The experimental results show that the magnitude of zeta potential has very corresponding relation with hydrodynamic diameter, the higher magnitude of zeta potential and the smaller hydrodynamic diameter are, the better dispersion stability of the nano-copper suspensions are. The experimental results also note that SDBS can significantly affect the value of zeta potential and hydrodynamic diameter by electrostatic repulsions, which lead to the enhancement of the stability of the Cu suspensions, and that the optimizing concentration of SDBS is 0.07％ for 0.1％ copper nano-suspensions which has the best disperse results.
Nano-copper SDBS Zeta Potential Hydrodynamic Diameter
王先菊 朱冬生 李新芳 文学艺
华南理工大学 化工与能源学院 传热强化与过程节能教育部重点实验室,广州510641;海军兵种指挥学院,广州510431 华南理工大学 化工与能源学院 传热强化与过程节能教育部重点实验室,广州510641 海军兵种指挥学院,广州510431
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）