245 10 |a Characterization of laminated safety glass interlayers : |b thermorheology, crystallinity and viscoelasticity / |c Miriam Schuster.

490 1_ |a Mechanik, Werkstoffe und Konstruktion im Bauwesen, |x 2512-3246 ; |v Band 66

505 0_ |a Introduction -- Theoretical background -- General description of the experimental methods -- Investigation of the semicrystalline structure of EVA and ionoplastic interlayers -- Identification of time-superposition principles for EVA and ionoplastic interlayers -- Determination of the linear viscoelastic behaviour and linearity limits for PVB -- Characterization of the nonlinear viscoelastic behaviour of PVB -- Application to engineering practice -- Summary and outlook Bibliography -- Appendix -- A Additional data -- B List of publications, presentations and workshops

520 __ |a Laminated safety glass enables the safe construction of transparent structures. The mechanical behaviour depends on the polymeric interlayer both in the intact and in the post fracture state. In the present work, the mechanical behaviour of ethylene vinyl acetate-based (EVA) and ionoplastic interlayers is investigated for the intact laminated safety glass condition. In particular, the influence of the semi-crystalline structure on the stiffness behaviour is studied with X-Ray Diffraction, Differential Scanning Calorimetry and Dynamic-Mechanical-Thermal-Analysis. The studies on the mechanical behaviour of the interlayer in the fractured laminated safety glass were carried out with polyvinyl butyral-based (PVB) interlayers. First, the temperature and frequency (time) dependent linearity limits are determined in Dynamic-Mechanical-Thermal-Analyses, second, the nonlinear viscoelastic material behaviour is investigated with tensile relaxation tests at different temperatures and strain levels

830 _0 |a Mechanik, werkstoffe und konstruktion im bauwesen. |x 2512-3246 ; |v Bd. 66