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关于确定丙烯酸类压敏胶粘剂蠕变行为并进行建模的探索性研究。

An Exploratory Study on Determining and Modeling the Creep Behavior of an Acrylic Pressure-Sensitive Adhesive.

作者信息

Simões Beatriz D, Fernandes Élio M D, Marques Eduardo A S, Carbas Ricardo J C, Maul Steven, Stihler Patrick, Weißgraeber Philipp, da Silva Lucas F M

机构信息

Institute of Science and Innovation in Mechanical and Industrial Engineering (INEGI), Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.

Departamento de Engenharia Mecânica, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.

出版信息

Materials (Basel). 2023 Mar 1;16(5):2029. doi: 10.3390/ma16052029.

DOI:10.3390/ma16052029
PMID:36903144
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10004165/
Abstract

In the present paper, an exploratory study on the creep behavior of a pressure sensitive adhesive (PSA) is performed. After the determination of the quasi-static behavior of the adhesive for bulk specimens and single lap joints (SLJ), SLJs were subjected to creep tests at 80%, 60%, and 30% of their respective failure load. It was verified that the durability of the joints increases under static creep conditions as the load level decreases, with the second phase of the creep curve becoming more pronounced, where the strain rate is close to zero. In addition, cyclic creep tests were performed for the 30% load level at a frequency of 0.04 Hz. Finally, an analytical model was applied to the experimental results in order to reproduce the values obtained for both static and cyclic tests. The model was found to be effective, reproducing the three phases of the curves which allowed for the characterization of the full creep curve, something not commonly found in the literature, especially for PSAs.

摘要

在本论文中，对一种压敏胶粘剂（PSA）的蠕变行为进行了探索性研究。在确定了块状试样和单搭接接头（SLJ）胶粘剂的准静态行为之后，对SLJ在其各自破坏载荷的80%、60%和30%下进行蠕变试验。结果表明，在静态蠕变条件下，随着载荷水平降低，接头的耐久性增加，蠕变曲线的第二阶段变得更加明显，此时应变率接近零。此外，在30%载荷水平下以0.04 Hz的频率进行了循环蠕变试验。最后，将一个分析模型应用于实验结果，以重现静态和循环试验获得的值。结果发现该模型是有效的，能够重现曲线的三个阶段，从而可以表征完整的蠕变曲线，这在文献中并不常见，尤其是对于PSA来说。

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