Abstract In this experimental study, a series of mechanical tests were conducted on double-lap joint specimens, where glass sheets were adhesively bonded on two different supports, namely aluminum and glass fiber reinforced polymer (GFRP). Five different types of adhesives (three epoxy and two acrylic) were compared and three temperature conditions (room temperature, work temperature and maximum service temperature) were investigated. The main aim is to verify the applicability of this type of junction on civil applications, such as windows, glass facades, and so on. The first part of this study describes the results of tensile tests conducted in order to verify the compatibility of the bonding system at room temperature; the second part illustrates the degradation of the adhesive bonding due to high temperatures; in fact, if used in civil applications, these junctions are generally exposed to severe temperatures that could reach the glass transition temperature of the used adhesive, this leads to the necessity to verify the correct functionality of the adhesive joint. The results evidenced that the mechanical performance of adhesive junctions is considerably reduced as the temperature increases. This phenomenon is more evident in acrylic adhesives rather than epoxy ones. The epoxy adhesives in all tests exhibited the highest load carrying, while the acrylic ones showed the highest joint elongations. Different failure modes, classified as “Adhesive Failure”, “Cohesive Failure”, ‘‘Light-Fiber-Tear Failure” or “Mixed Failure”, were observed at room temperature while, at high temperatures, only “adhesive failure” was observed. The study demonstrates that high temperatures have a remarkable impact on the mechanical properties of adhesive junctions. Such effect should be suitably taken into account in the design and verification phase of components. The research results can be appropriately used in practical applications.

中文翻译：

---

温度对环氧树脂和丙烯酸粘合剂双搭接玻璃-铝和玻璃-gfrp接头失效模式的影响

摘要 在这项实验研究中，对双搭接接头试样进行了一系列力学测试，其中玻璃板粘合在两种不同的支撑件上，即铝和玻璃纤维增​​强聚合物 (GFRP)。对五种不同类型的粘合剂（三种环氧树脂和两种丙烯酸）进行了比较，并研究了三种温度条件（室温、工作温度和最高使用温度）。主要目的是验证这种类型的连接在民用应用中的适用性，例如窗户、玻璃幕墙等。本研究的第一部分描述了为验证粘合系统在室温下的兼容性而进行的拉伸试验结果；第二部分说明了由于高温引起的胶粘剂粘合的退化；实际上，如果用于民用应用，这些接头通常会暴露在可能达到所用粘合剂的玻璃化转变温度的严酷温度下，因此需要验证粘合剂接头的正确功能。结果表明，随着温度的升高，粘合剂连接的机械性能显着降低。这种现象在丙烯酸粘合剂中比环氧树脂粘合剂更明显。在所有测试中，环氧粘合剂表现出最高的承载能力，而丙烯酸粘合剂表现出最高的接头伸长率。在室温下观察到不同的失效模式，分为“粘合失效”、“内聚失效”、“光纤撕裂失效”或“混合失效”，而在高温下，仅观察到“粘合失效”。该研究表明，高温对粘合剂连接点的机械性能有显着影响。在组件的设计和验证阶段应适当考虑这种影响。研究成果可适当用于实际应用。