摘要
本文应用Wilhelmy吊片法,进行了牛顿流体(硅油、丙三醇水合溶液)的动态湿润实验。测量了流体的黏度、表面张力和动态湿润过程中动态接触角随接触线移动速度的变化关系,获得了一批高精度的实验数据。根据三类常用理论模型对实验数据进行了拟合,分析了接触线局部区域微观物理机制对动态湿润持性的影响,本文还研究了流体黏度、表面张力和浸润固体的表面能等宏观物理参数对动态湿润的影响,探讨了影响牛顿流体动态湿润过程的关键因素。
In this paper, Wilhelmy plate method was used to study the wetting dynamics of Newtonian fluids （silicon oil, aqueous solution of glycerol） on different substrates. A set of high-precise experimental data on the viscosity, surface tension and the dynamic contact angle at different velocities of the contact line had been got. This work analyzed the influence of microscopic mechanism in the vicinity of dynamic contact line on wetting dynamics of Newtonian fluids by comparing the experimental results with the theoretical models. The macroscopic influences of viscosity, surface tension and solid＇s surface free energy on wetting dynamics had also been investigated. The major influencing factors in wetting dynamics were analyzed.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第10期1647-1650,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金重点项目(No.50636020)
关键词
动态湿润
吊片法
动态接触角
接触线
牛顿流体
wetting dynamic
Wilhelmy plate method
dynamic contact angle
moving contact line
Newtonian fluids
