Thermo Mechanical Behaviour of Polymeric Interlayer Materials

Prof. Dr.-Ing. Bernhard Weller, Dipl.-LM-Chem. Christiane Kothe, Dipl.-Chem. Michael Kothe, Dipl.-Ing.Jan Wünsch

In addition to a short summary about chemical and physical fundamentals this article gives an overview of the thermo mechanical properties of analysed interlayer materials received by using different examination methods. Furthermore the range of application and the limitation of use are derived from the results.

Various polymeric interlayer are used for laminated glazing and photovoltaic modules. Thereby, interlayer of polyvinyl butyral (PVB) with various modifications, thermoplastic polyurethanes (TPU), ethylene-vinyl acetate copolymer (EVA) as well as polyethylene (PE) are mainly used. The materials differ in their chemical composition and morphology.

The aggregate state of polymers depends on temperature. The most important phases are the entropy elastic and the energy elastic state because they define the range of application. The glass transition temperature (Tg) and other thermal transitions such as crystallisation, relaxation, and phase transitions are characteristic properties for polymeric materials. Various analytical methods like dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) were tested to determine these thermo mechanical properties of the polymer interlayer materials.

Full text article [370 KB]

The Authors

	Mr. Michael Kothe Research Assistant Technische Universität Dresden Read more
	Prof. Dr. Bernhard Weller Technische Universität Dresden, Institute of Building Construction Bernhard Weller is Professor of Civil Engineering at the Technische Universitaet Dresden and Director of the Institute of Building Construction. He has expertise in design, testing and use of glass. T... Read more
	Mr. Jan Wünsch Dipl.-Ing. Institut für Baukonstruktion, Technische Universität Dresden Read more