Switchable Adhesives for Multifunctional Interfaces,Advanced Materials Technologies

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Switchable Adhesives for Multifunctional Interfaces
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2019-06-13 , DOI: 10.1002/admt.201900193
Andrew B. Croll _{1,

2} , Nasibeh Hosseini ₃ , Michael D. Bartlett ₄

Affiliation

Joining two materials with an adhesive is an extremely common activity, but is most often irreversible. However, emerging and current applications ranging from consumer and medical products to soft robotics and wearable bio‐monitoring devices demand strong adhesives which can be easily removed on‐demand and subsequently reused. This requires new paradigms in adhesive science and engineering, resulting in the emergence of new classes of multifunctional switchable adhesives. Here summarized is the current state of the art in switchable adhesive systems, focusing on how devices fit into the basic science of adhesion while providing performance metrics for comparison across current approaches. Using fracture mechanics as a guide, systems are classified as functioning under one of three basic mechanisms: near‐interface, contact area, or mechanical. These mechanisms must be initiated or “triggered” by a specific input, which can include mechanical, electromagnetic, fluidic, or thermal stimuli. Triggers and adhesion switching performance are compared through the use of a “switching ratio,” the interfacial energy release rate, and an estimate of mechanism timing. Finally, it is discussed that how the fundamental mechanisms relate to challenges and opportunities for switchable interfaces in future applications and adhesive systems.

中文翻译：

多功能接口的可切换粘合剂

用粘合剂将两种材料结合在一起是一种非常普遍的活动，但通常是不可逆的。但是，从消费品和医疗产品到软机器人技术和可穿戴生物监控设备的新兴应用和当前应用，都需要牢固的粘合剂，这些粘合剂可以按需轻松去除，然后再使用。这就需要粘合剂科学和工程学的新范式，导致出现了新型的多功能可转换粘合剂。本文总结了可转换胶粘剂系统的最新技术，重点关注设备如何适应胶粘剂的基本科学原理，同时提供性能指标以进行当前方法之间的比较。以断裂力学为指导，将系统归类为以下三种基本机制之一：近界面，接触面积或机械。这些机制必须由特定的输入启动或“触发”，特定的输入可以包括机械，电磁，流体或热刺激。通过使用“转换比”，界面能量释放速率和机制定时的估计来比较触发和粘附转换性能。最后，

更新日期：2019-06-13

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