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Development of functional nanofillers with controlled release properties for innovative adhesive formulations

Eine Entwicklung funktioneller Nanofüllstoffe mit kontrollierter Depotwirkung für innovative Klebstoffformulierungen
: Noeske, M.; Schiffels, P.; Trautmann, J.

Institute of Materials -IOM-, Communications Limited, London; Institute of Materials, Society for Adhesion and Adhesives:
EURADH 2008/Adhesion 2008, 10th International Conference on the Science and Technology of Adhesion and Adhesives : 3 - 5 September 2008, St. Catherine's College, Oxford, UK
London: IOM Communications, 2008
European Conference on Adhesion (EURADH) <8, 2008, Oxford>
International Conference on the Science and Technology of Adhesion and Adhesives (Adhesion) <10, 2008, Oxford>
Fraunhofer IFAM ()
Depotwirkung; Adhesivklebemittel; Werkstoffherstellung; Simulation; Epoxidharz; nanokristalliner Werkstoff

Modern adhesives and coatings basically are composed of highly developed organic polymer systems and solid fillers. Often, inorganic fillers contribute to application properties in the uncured state of reactive polymer systems, and mechanical or permeation properties of the resulting cured composites. For the development of innovative fillers, the nano-technological concepts of function integration and interphase design may be implemented. Such design requires knowledge and tools focused on the interactions between solid surfaces and organic monomers or polymers. Computer-based simulation may be applied to identify and finally tailor material combinations which then are introduced into chemical synthesis and engineering. In this context, the strategy and first results of studies focusing on the development of nano-scale fillers with controlled release functionality will be reported. At room temperature, accelerators or initiators for polyreactions were effectively encapsulated in submicrometer-scale inorganic host systems. The release was configurated to occur at lower temperatures than in current formulations. Computer-based simulation is shown to provide valuable information about sterically possible host/guest combinations, attainable loadings and release temperatures. Experimental evidence is presented for accelerators encapsulated in inorganic oxide host systems, used for curing one component epoxy resins.