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Title:
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Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites
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Author:
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Shiravand, Fatemeh; Hutchinson, John M.; Calventus Solé, Yolanda
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. POLTEPO - Polímers Termoestables Epoxídics |
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Abstract:
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The non-isothermal cure kinetics of polymer silicate layered nanocomposites based on a tri-functional epoxy resin has been investigated by differential scanning calorimetry. From an analysis of the kinetics as a function of the clay content, it can be concluded that the non-isothermal cure reaction can be considered to consist of four different processes: the reaction of epoxy groups with the diamine curing agent; an intra-gallery homopolymerisation reaction which occurs concurrently with the epoxy-amine reaction; and two extra-gallery homopolymerisation reactions, catalysed by the onium
ion of the organically modified clay and by the tertiary amines resulting from the epoxy-amine reaction. The final nanostructure displays a similar quality of exfoliation as that observed for the isothermal cure of the same nanocomposite system. This implies that the intra-gallery reaction, which is responsible for the exfoliation, is not significantly inhibited by the extra-gallery epoxy-amine cross-linking reaction. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials
-Nanocomposites (Materials)
-Epoxy resins
-Thermosetting composites
-Nanocomposites
-Thermosetting resins
-Thermal properties
-Exfoliation
-Epoxy resin
-Nanocompostos (Materials)
-Resines epoxídiques
-Compostos termoenduribles |
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Rights:
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Document type:
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Article - Published version
Article |
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Published by:
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Budapest University of Technology and Economics
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