Advanced adhesion evaluation using surface energies and viscoelastic properties
This innovative solution leverages molecular interactions and viscoelastic properties to create an "adhesion envelope" for evaluating tapes and coatings. By varying surface energies and peel speeds, it offers a more accurate adhesion assessment than traditional methods.
Overview
This research introduces a novel approach to evaluating adhesion by combining molecular-level interactions with the elastic and viscous properties of adhesives. The core of this solution lies in the concept of an "adhesion envelope," which provides a comprehensive assessment of adhesion performance under varying conditions. This method aims to address the limitations of traditional peel resistance tests by incorporating surface energy matching and varying peel speeds, offering a more accurate evaluation of adhesive performance across different substrates.
Technical specifications
The solution involves a prototype hand-held peel tester designed to test adhesive performance on reference surfaces with different polarities and peeling speeds. By applying principles from the Owens Wendt Rabel and Kaelble model, this approach extends traditional contact angle measurements to peel tests. Key features include:
- Adaptability to various adhesive tapes and coatings
- Evaluation based on elastic deformation and viscous dissipation properties
- Ability to identify optimal test parameters for different substrates
- Development of a software interface for data evaluation and visualization
Technology readiness level
Currently at Technology Readiness Level 3, this project has completed initial prototype design and model development. The next steps include in-field testing and software interface development, followed by performance evaluations and feedback analysis for further refinement.
About Technische Universität Kaiserslautern
Technische Universität Kaiserslautern was a public technical university in Kaiserslautern, Germany, recognized for applied, industry-connected research and a strong STEM profile. Its campus was co-located with national applied research institutes and test facilities, enabling joint projects, shared infrastructure, and contract R&D with companies. A research and technology park near campus and proximity to the Rhine-Main industrial corridor supported prototyping, pilots, and talent pipelines. Research was backed by competitive national and EU funding, including the German Research Foundation and federal ministries. On January 1, 2023 it merged into Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau (RPTU), which now provides technology transfer, IP services, and commercialization support.
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