Historically, analytical test methods on pressure sensitive adhesives (PSAs) have shown modest correlation to applications test results. Since applications tests such as peel strength and shear strength involve large deformations of the adhesive, large amplitude oscillatory shear (LAOS) experiments may correlate more strongly to the applications test results than typical linear viscoelastic measurements. Here we report some of the earliest LAOS measurements on commercial PSA films and compare them to the measured peel strength and shear strength. The parameters, G’_M, Q, and e₃/e₁, showed a strong correlation to the peel and shear results while the parameters, S, T, and v₃/v₁, demonstrated weaker dependencies. While detailed molecular level interpretation of the LAOS results is not possible, these results indicate LAOS testing may provide a better indication of applications performance in a more efficient way than existing applications test protocols.

从历史上看，压敏粘合剂（PSA）的分析测试方法与应用测试结果之间显示出适度的相关性。由于诸如剥离强度和剪切强度之类的应用测试涉及粘合剂的大变形，因此，与典型的线性粘弹性测量相比，大振幅振荡剪切（LAOS）实验与应用测试结果的相关性更强。在这里，我们报告了一些在商用PSA膜上进行的最早的LAOS测量，并将它们与测得的剥离强度和剪切强度进行了比较。的参数，G”_中号，Q，和ë ₃ / E ₁，表明的剥离和剪切的结果很强的相关性，而参数，小号，Ť和v ₃ / v ₁表现出较弱的依赖性。尽管无法对LAOS结果进行详细的分子水平解释，但这些结果表明，与现有的应用程序测试协议相比，LAOS测试可以以更有效的方式更好地指示应用程序性能。