Article (Scientific journals)
Dissolution, transport and reaction at a DICY/DGEBA interface
Müller, Ulrich; Philipp, M.; Gaukler, J. C. et al.
2012In Journal of Adhesion, 88 (3), p. 253-276
Peer reviewed
 

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Keywords :
Brillouin microscopy Curing DGEBA DICY Dissolution Transport
Abstract :
[en] The curing of an epoxy consisting of the solid hardener dicyandiamide (DICY) and the resin diglycidyl ether of bisphenol A (DGEBA) is studied in a system consisting of a tablet of DICY embedded in liquid DGEBA. Dissolution of DICY within the liquid DGEBA in combination with the transport of dissolved DICY from the tablet border into DGEBA and the chemical reaction of both reactants is studied by scanning Brillouin microscopy and infrared spectroscopy. Scanning Brillouin microscopy demonstrates the spatial and temporal evolution of the static and dynamic hypersonic properties in the course of curing in the vicinity of the DICY tablet. Infrared spectroscopy performed on epoxy pieces extracted from the final sample at different distances from the tablet surface give information about the spatial evolution of the curing process. The results achieved by both techniques are finally combined to yield a better understanding of the curing of DICY-based epoxies, which transform upon curing from strongly heterogeneous systems towards increasingly homogeneous systems. Copyright © Taylor & Francis Group, LLC.
Disciplines :
Physics
Author, co-author :
Müller, Ulrich ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Philipp, M.
Gaukler, J. C.
Possart, W.
Sanctuary, Roland ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Krüger, J. K.
Language :
English
Title :
Dissolution, transport and reaction at a DICY/DGEBA interface
Publication date :
2012
Journal title :
Journal of Adhesion
Volume :
88
Issue :
3
Pages :
253-276
Peer reviewed :
Peer reviewed
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