Systematic measurement and calibration approach for mechanical properties of polymer thin film materials
Journal
Journal of Mechanics
Journal Volume
40
Start Page
774
End Page
782
ISSN
1811-8216
Date Issued
2024
Author(s)
Yan-Ting Lin
Shao-Hong Liao
Yi-Chian Tsai
Yen-Chu Chao
Jing-Ting Zhu
Jung-Ren Huang
Abstract
This study investigates the mechanical properties of pressure-sensitive adhesive (PSA) and PSA blended with polyethylene terephthalate (PET) film (PBP) through a series of mechanical tests. The combination of a linear-elastic and viscoelastic material model was employed and calibrated to accurately characterize their mechanical behavior. The tensile test and dynamic mechanical analysis (DMA) yielded contrasting results regarding the elastic properties of the two polymer thin films. The experimental data revealed that Young's modulus of PBP is significantly higher than that of PSA, whereas the shear modulus of PBP is notably lower than PSA. This behavior can be attributed to the sandwich structure of the PBP composite, where the PSA and PET components interact in different configurations either in parallel or in series during the tensile test and DMA, respectively. This paper presents a systematic approach for the precise and efficient application of material models for PSA and PBP, providing valuable insights for future use in various composite polymer film adhesives. Comprehensive calibration and finite element analysis were conducted for both PSA and PBP materials. Based on these experimental findings, we propose a systematic method for measuring and calibrating the mechanical properties of thin film composite materials. This method offers a reliable reference for future engineering applications, as it can be applied to other material systems to expedite the development process.
Subjects
composite polymer thin films
finite element method
material parameter calibration
viscoelastic materials
Publisher
Oxford University Press (OUP)
Type
journal article