硅油和丙三醇水溶液动态湿润特性实验研究  

EXPERIMENTAL RESEARCH ON WETTING DYNAMICS OF SILICON OIL AND AQUEOUS SOLUTION OF GLYCEROL

作　　者：朱君悦[1] 闵琪[1] 段远源[1] 王晓东[2] 

机构地区：[1]清华大学热科学与动力工程教育部重点实验室,北京100084 [2]北京科技大学机械工程学院热能工程系,北京100083

出　　处：《工程热物理学报》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)

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.

关 键 词：动态湿润 吊片法 动态接触角 接触线 牛顿流体 

分 类 号：TK121[动力工程及工程热物理—工程热物理] TK123[动力工程及工程热物理—热能工程]