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The application of reed-vibration mechanical spectroscopy for liquids to detect chemical reactions of an acrylic structural adhesive
Authors:Wei Lai  Zhou Heng-Wei  Zhang Li  and Huang Yi-Neng
Affiliation:[1]National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China [2]xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University, Yining 835000, China
Abstract:There remain a number of unsolved problems about chemical reactions, and it is significant to explore new detection methods because they always offer some unique information about reactions from new points of view. For the first time, the solidification course of a modified two-component acrylic structural adhesive is measured by using reed-vibration mechanical spectroscopy for liquids (RMS-L) in this work, and results show that there are four sequential processes of mechanical spectra with time. The in-depth analyses indicate that RMS-L can detect in real-time the generation and disappearance of active free radicals, as well as the chemical cross-link processes in the adhesive. This kind of real-time detection will undoubtedly facilitate the study of the chemical reaction dynamics controlled by free radicals.
Keywords:mechanical spectroscopy  chemical reaction  acrylic structural adhesive
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