Adhesives with reversible bonding characteristics are useful in different applications which demand assembly and disassembly of components, over repeated times. To achieve reversible bonding, the bonding strength of the adhesives on the substrate should be sufficiently high to ensure cohesive failure and with minimized adhesive failure after each bond/debond cycle. This study aims at investigating the bonding strength of an aromatic thermosetting copolyester (ATSP) adhesive deposited on aluminum substrates prepared with conventional sandblasting technique, and laser surface texturing. The deposited ATSP coating was bonded at a temperature of 340 °C and debonded at various temperatures from 25 to 200 °C using a bond strength tester. The reversibility of the coating was shown through multiple bond/debond cycles. The experimental findings revealed significant improvement of bond strength through laser surface texturing, compared to sandblasting by more than 27–63% for debonding at temperatures from 25 to 200 °C. Failure analysis of the coatings showed the predominance of adhesive and cohesive failure for sandblasted and laser textured substrates, respectively. The role of surface topography parameters was investigated for each substrate preparation method, and correlated to the bond/debond experiments.

具有可逆粘结特性的胶粘剂可用于需要重复组装和拆卸组件的不同应用中。为了实现可逆粘合，粘合剂在基材上的粘合强度应足够高，以确保内聚破坏，并在每次粘合/脱粘循环后将粘合破坏降至最低。这项研究的目的是研究沉积在用常规喷砂技术制备的铝基材上的芳族热固性共聚酯（ATSP）粘合剂的粘合强度，以及激光表面纹理化。沉积的ATSP涂层在340°C的温度下粘合，并使用粘合强度测试仪在25至200°C的不同温度下脱胶。涂层的可逆性通过多次粘结/脱粘循环显示出来。实验结果表明，与激光喷砂处理相比，在25至200°C的温度下进行喷砂处理，与喷砂处理相比，粘结强度显着提高了27-63％。涂层的失效分析表明，喷砂和激光纹理化基材的粘合和内聚力分别占主导地位。研究了每种基材制备方法的表面形貌参数的作用，并将其与键合/脱键实验相关。