Abstract:

The bonding of underwater/wetted materials has always been a major challenge. Studying on the adhesion properties of marine organisms, specifically mussels, to the surface of underwater objects through the secretion of adhesion proteins by their byssal threads have revealed that the catechol in the adhesion proteins play a key role in the adhesion of wet surfaces. This paper reviewed the adhesion mechanism of catechol-based wet adhesives, focusing on wet surface adhesion and adhesive material cohesion curing, respectively, as well as the progress in developing adhesives for wet bonding based on this mechanism, including the structural design of wet adhesives and the synergistic effects of the catechol moiety with amine groups, cationic and metal ionic coordination, other chemical reactions and other factors. The key factors for the development of adhesives for underwater/wetted material bonding were analyzed. Removal of water molecules from wet surfaces, adhesion properties of adhesive materials to the surface and cured cohesion of adhesive materials should be noticed for the development of excellent performance wet bonding material, and the focus in the future should be towards green materials, biocompatibility and simple preparation processes.

Key words: catechol, adhesives, wet surface adhesion, cohesion cure, adhesion mechanism

摘要：

水下/湿润材料的粘接一直以来是一项重大挑战。通过海洋生物贻贝丝足分泌黏附蛋白对水下物体表面黏附性能的研究发现，黏附蛋白中邻苯二酚结构对湿表面粘接起关键作用。本文分别从胶黏剂对湿表面黏附性和胶黏剂材料内聚固化两个方面介绍邻苯二酚基湿胶黏剂的黏附机制，以及依据此机理研究湿胶接用胶黏剂的工作进展，包括湿胶黏剂结构设计和邻苯二酚基团与胺基、阳离子、金属离子配位及其他化学反应等因素的协同作用，分析水下/湿润材料粘接用胶黏剂开发的关键因素，指出未来开发新型性能优异湿粘接用胶黏剂材料应重点关注胶黏剂材料对湿表面水分子的“清除”功能、对被粘材料表面的黏附性能以及胶黏剂材料固化后内聚强度；今后应重点朝向材料绿色环保、生物相容以及简便制备工艺等方向发展。

关键词: 邻苯二酚, 胶黏剂, 湿表面黏附, 内聚固化, 黏附机制