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本文讨论了基于双液法接触角测定的固体表面能的测算原理,研究了上浮模式及下落模式两种实验方法,并测算了经不同表面处理的钢、铁、铝等合金及玻璃,氧化铝陶瓷,石英等高表面能材料的表面能值及其对粘合性能的影响。研究结果表明,在界面破坏的情况下,粘接强度不仅与材料的表面能有关,而且与材料表面的化学组成及物理性质及形态有关。在组成物性及形态相接近的各材料中,粘接强度随材料的表面能增大而增高(主要随表面能值中的Y_s~D值增大而增高)。在组成、物性及形态不同的材料之间,粘合强度与表面能值并无对应关系。
In this paper, the calculation principle of solid surface energy based on the double-liquid contact angle measurement is discussed. The two experimental methods, the floating mode and the falling mode, are studied. The surface treated steel, iron, aluminum alloy and glass, Surface energy of ceramics, quartz and other high surface energy materials and their influence on adhesion properties. The results show that the bond strength is not only related to the surface energy of the material but also to the chemical composition, physical properties and morphology of the material surface under the condition of interface failure. In each material having a similar physical and morphological composition, the bond strength increases as the surface energy of the material increases (mainly as the value of Y_s-D in the surface energy increases). In the composition, physical properties and morphology of different materials, the bonding strength and surface energy value does not correspond.