发表机构
Cornell University; Hokkaido University（康奈尔大学; 北海道大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究 3M 魔力扣胶带的工作原理，通过断裂力学方法推导界面裂纹能量释放率表达式，验证其与模拟结果相符，发现最大支撑负荷与释放力比值和粘结长度与粘合剂厚度比值线性相关，还研究了裂纹扩展及产生失效包络线用于预测相关性能。
AI 中文摘要
可移除的粘合系统，如 3M 魔力扣，旨在承受较大负荷，同时能从基材上干净、无损地移除。这些系统依赖高度可延展的胶条，使用时牢固粘结，拉伸时释放，使胶层伸长并逐渐从表面脱粘。拉伸释放粘合剂设计的核心挑战是在最小化移除所需力的同时最大化承载能力。本研究调查了超弹性拉伸释放粘合剂系统中控制负荷支撑和胶带释放的有限变形力学，特别关注 3M 魔力扣胶带的几何形状。推导了在承载和释放条件下界面裂纹能量释放率的显式解析表达式，并通过有限元模拟的 J 积分评估进行了验证。结果表明，最大支撑负荷与释放力的比值与粘结长度与粘合剂厚度的比值呈线性比例关系，该比值通常很大。还通过解析解和模拟研究了几何形状驱动的在背衬和基材界面之间的交替裂纹扩展，其控制着胶带的移除。对竞争界面断裂韧性的参数研究产生了失效包络线，为估计多层拉伸释放粘合剂系统中的释放力和不稳定裂纹扩展提供了预测框架。
英文摘要
Removable adhesive systems such as 3M Command strips are designed to support substantial loads while allowing clean, damage-free removal from the substrate. These systems rely on a highly extensible adhesive strip that bonds strongly during use but releases when stretched, causing the adhesive layer to elongate and progressively debond from the surfaces. A central challenge in the design of stretch-release adhesives is therefore to maximize load-bearing capacity while minimizing the force required for removal. This study investigates the finite-deformation mechanics governing both load support and tape release in a hyperelastic stretch-release adhesive system, with particular focus on the 3M Command tape geometry. Explicit analytical expressions are derived for the energy release rate of interfacial cracks under both load-bearing and release conditions and are validated against $J$-integral evaluations from finite element simulations. The results show that the ratio of maximum supported load to release force scales linearly with the ratio of bonded length to adhesive thickness, which is typically very large. We also investigate geometry-driven alternating crack propagation between the backing and substrate interfaces, governing tape removal, by analytical solutions and simulations. Parametric studies of competing interfacial fracture toughnesses produce failure envelopes that provide a predictive framework for estimating release forces and unstable crack propagation in multilayer stretch-release adhesive systems.
CommentsSubmitted to Soft Matter; Updated on Aug 28 for minor revision
