On the question of rate-dependence of contact angles
On the question of rate-dependence of contact angles
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关于接触角的速率依赖性问题
DOI：
10.1016/j.colsurfa.2006.01.001
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
A. Neumann
中科院分区：
文献类型：
--
作者：
H. Tavana;A. Neumann
研究了不同液体在光滑均匀的聚四氟乙烯AF1600薄膜上的接触角与三相线运动速率的关系。对于动态粘度远低于10(CP)的液体，当运动速度达到∼12(mm/min)时，推进角和后退角都不会受到显著影响。另一方面，对于粘性较大的液体，增大运动速度会导致进动角增大，后退角减小。这种动态接触角不能与杨方程一起使用。
Contact angles of different liquids on smooth and homogeneous films of Teflon AF 1600 were studied as a function of rate of motion of the three-phase line. For liquids with a dynamic viscosity of well below 10(cP), neither advancing nor receding angles are influenced significantly by the rate of motion up to ∼12(mm/min). On the other hand for more viscous liquids increasing the rate of motion causes the advancing angles to increase and the receding angles to decrease. Such dynamic contact angles may not be used in conjunction with the Young equation.