影响纤维增强塑料力学性能的因素很多,但其中最主要的是纤维与基体界面粘结的状况。界面粘结良好,能很好地传递应力,材料就有较好的力学性能。界面粘结是一复杂的过程,受多种因素的影响。仅从表面热力学角度来考虑,界面粘结强度与热力学粘结功及界面张力这两个物理量有关。一般情况下,实际粘结强度随热力学粘结功增大而提高,随界面张力减低而升高。所以,热力学粘结功和界面张力这两个物理量较普遍地被人们用来判断粘结状态的好坏。为了求得这两个物理量,必须要知道粘结件的表面张力,就复合材料而言,需 There are many factors that affect the mechanical properties of fiber-reinforced plastics, but the most important one is the bonding between fiber and matrix. Interface bonding well, can well transfer stress, the material has better mechanical properties. Interface bonding is a complex process that is influenced by many factors. Only from the surface thermodynamic point of view, the interface bonding strength and the thermodynamic bond strength and interfacial tension of the two physical quantities. Under normal circumstances, the actual bond strength increases with the thermodynamic bond work increased, with the interfacial tension decreased and increased. Therefore, the two physical quantities of thermodynamic bond strength and interfacial tension are more commonly used to judge the state of bonding. In order to obtain these two physical quantities, we must know the surface tension of the bond, in terms of composite materials,