Analytical model for static and cyclic creep behavior of pressure-sensitive adhesives

Abstract

The increasing interest in adhesives, such as pressure-sensitive adhesives (PSAs), is often held back by uncertainties regarding their long-term behavior, which includes creep behavior. However, little information exists in the literature regarding creep behavior of PSAs. In this paper, a unified phenomenological creep model for PSAs is applied in SLJs for static and cyclic creep, seeking to develop a tool to predict creep behavior of PSAs. The model was validated by comparing the predicted creep curves with experimental data. It captured the three creep phases and predicted the creep curves for different stresses and temperatures, which is uncommon in literature.

Keywords:

• Pressure-sensitive adhesive
• creep modeling
• analytical modeling
• static creep
• cyclic creep

Acknowledgments

The authors wish to acknowledge and thank the support provided by Robert Bosch GmbH, Corporate Research and Advance Engineering, Renningen.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The authors gratefully acknowledge the Portuguese Foundation for Science and Technology (FCT) for supporting the work presented here through the individual grant 2023.03694.BD