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对液体的表面张力和比表面自由能进行了热力学分析和比较 ,探讨了液体的表面张力和比表面自由能两个概念的各自内涵和在分子水平上的产生机理 .分析了两者在不同领域的应用和相互之间的联系。研究表明液体的表面张力是从力的角度来分析液体表面现象 ,是微观分子作用力的宏观表现 ;比表面自由能是从能量的角度来研究液体表面现象 .从微观结构分析可以得出液体的表面张力是液体表面空穴作用的结果 ,比表面自由能是液体分子间作用力作功的结果 ,两者都与液体分子间的作用力有关 .
The thermodynamic analysis and comparison of the surface tension and the free surface energy of the liquid were carried out to discuss the respective connotation of the two concepts of surface tension and specific surface free energy of liquid and the molecular mechanism of the two. The application and the connection between them. The study shows that the surface tension of liquid is the liquid surface phenomenon from the perspective of force, which is the macroscopic manifestation of the force of the micro-molecule. The specific surface free energy is from the energy point of view to study the liquid surface phenomenon.From the microstructure analysis, Surface tension is the result of cavitation on the surface of the liquid. The specific surface free energy is the result of work done by the force between the liquid molecules, both of which are related to the force between the liquid molecules.