基于杨氏方程的固体表面能计算研究进展

Research Progress on Calculation of Solid Surface Tension Based on Young′s Equation

从三个重要方面介绍了基于杨氏方程计算固体表面能。阐述了接触角测量技术的基本假设、对固体和液体材料的要求及测量仪设计;叙述了各种常见液体表面能的测量方法及其适用范围;详述了两大类固体表面能、固液界面能和液体表面能的关系模型,并分析了各自的实效性。最后,总结了此类计算方法存在的一些本质问题。

The recent insights on three crucial aspects in Young＇s equation-based approach for measuring solid surface tension （SST） are re~,iewed. First, the fundamental hypotheses, the requirement of solid and liquid material used, and the remarks of designing instrument （contact angle meter） during measuring contact angle are introduced. Secondly, the popularly existed methods for measuring liquid surface tension （LST） are listed, and their advantages and disadvantages are analyzed in terms of the accuracy of LST and the amount of liquid droplet. Thirdly, two groups of the correlated models between SST, solid-liquid interfacia/tension （SLIT）, and LST are systematically elucidated, and their effectiveness on measuring SST with the cooperation of Young＇s equation are summarized. More importantly, inherent drawbacks of the Young＇s equation-based approach are investigated.