Affiliation:
1. Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Suzhou Key Laboratory of Soft Material and New Energy College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
2. Department of Biomedical Engineering Northwestern University Evanston IL 60208 USA
3. School of Chemistry and Chemical Engineering Nanjing University Nanjing China
4. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai China
Abstract
AbstractMetal‐to‐metal adhesives are vital across diverse sectors including automotive, aerospace, and industrial assembly. However, traditional adhesion detection methods are mainly based on the fracture mechanism, posing challenges for nondestructive detection. Here, a nondestructive method that leverages electrical signals to monitor the adhesion state of metal interfaces in real‐time is presented. The approach utilizes detectable adhesives (DA) synthesized from poly(ionic liquid) (PIL), which not only exhibit robust adhesion properties (4.9 MPa) but also function as ionic conductors. By correlating changes in capacitance and resistance with the adhesive state, the method allows for in situ monitoring of the curing process, prediction of adhesion strength, and early detection of potential failures. This dual‐sensing capability, combining electrical and mechanical aspects, enhances understanding of adhesive behavior in diverse conditions, presenting a fresh approach for digitally transforming adhesive technologies.
Funder
National Natural Science Foundation of China
Collaborative Innovation Center of Suzhou Nano Science and Technology
Priority Academic Program Development of Jiangsu Higher Education Institutions
Collaborative Innovation Center for Water Treatment Technology and Materials