Background

Peel tests are frequently used to perform measurements of adhesive strength for pressure sensitive adhesive (PSA) tapes. Current lab methodologies for 90° peel tests translate the model substrate orthogonally to the peel direction in order to maintain the peel angle, precluding testing from immovable substrates.

Objective

It was our objective to develop a peel fixture capable of testing temporary pavement marking (TPM) tapes and other PSA tapes from immovable substrates such as roadways surfaces.

Methods

We present a modular peel fixture for conducting peel experiments directly on immovable substrates. The fixture was validated through a series of peel tests on consumer tapes to reproduce the linear width dependence and viscoelastic rate dependence found in traditional peeling setups. To test the capabilities of the fixture, a series of peel tests were conducted with various tapes on controlled surfaces, and a commercial tape on various immovable substrates.

Results

We demonstrate the ability of our fixture to reproduce results reported for traditional peel tests from literature. In addition, we were able to conduct peel tests directly on immovable substrates such as the benchtop.

Conclusions

This fixture shows potential for both traditional peeling tests, and for use in in-situ peel experiments from substrates relevant to the end application of the PSA tape.

中文翻译：

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用于在不可移动基材上进行胶带剥离测试的模块化剥离夹具

背景

剥离测试经常用于测量压敏粘合剂 (PSA) 胶带的粘合强度。当前用于 90° 剥离测试的实验室方法将模型基板垂直于剥离方向平移，以保持剥离角度，从而避免从不可移动的基板进行测试。

客观的

我们的目标是开发一种剥离夹具，能够从不可移动的基材（如道路表面）测试临时路面标记 (TPM) 胶带和其他 PSA 胶带。

方法

我们提出了一种模块化剥离夹具，用于直接在不可移动的基板上进行剥离实验。该夹具通过对消费胶带的一系列剥离测试进行验证，以重现传统剥离设置中发现的线性宽度依赖性和粘弹性速率依赖性。为了测试夹具的性能，在受控表面上使用各种胶带进行了一系列剥离测试，在各种不可移动的基材上使用商用胶带进行了一系列剥离测试。

结果

我们证明了我们的夹具能够重现文献中传统剥离测试报告的结果。此外，我们还能够直接在台式等不可移动基材上进行剥离测试。

结论

该夹具显示出用于传统剥离测试和用于与 PSA 胶带最终应用相关的基材的原位剥离实验的潜力。