Investigations on the thermorheologically complex material behaviour of the laminated safety glass interlayer ethylene-vinyl-acetate

Schuster, Miriam; Kraus, Michael; Schneider, Jens; Siebert, Geralt

doi:10.1007/s40940-018-0074-9

Cited by 20 publications

(10 citation statements)

References 24 publications

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“…The interlayer properties have been also widely studied in last decades, as described in the review of (Martín et al 2020). A wide range of material investigations and models for standard polyvinyl butyral (PVB) (Andreozzi et al 2014;Botz et al 2019;Sobek et al 2000), ethylene-vinyl acetate EVA (Hána et al 2019;Schuster et al 2018), polyurethane PU (Scherer et al 2020), thermoplastic polyurethane TPU (Kuntsche 2015;Rühl 2017) and stiff PVB interlayers (Kuntsche 2015) are available for implementation in analytical calculations and numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations and numerical simulations of innovative lightweight glass–plastic-composite panels made of thin glass and PMMA

Hänig

Weller

2021

Glass Struct Eng

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Composites are being increasingly used for industrial applications and combine the advantageous properties of two or more constituents. The urge to reduce material to a minimum and the trend towards lightweight glass structures require further developments in high performance and fully transparent composite structures for the building industry. Novel innovative glass–plastic-composite panels combining a lightweight polymer polymethylmethacrylate (PMMA) interlayer core and cover layers of thin glass are currently under development. The panels exhibit high structural load-bearing performance, are durable and fully transparent with a low self-weight. These properties make the composite panels suitable for slender and lightweight glass constructions and reveal new design possibilities for the building industry. However, the material properties of the modified PMMA polymer interlayer core for precise design considerations are lacking. Furthermore, the material behaviour of thermoplastic polymers changes over time, ages due to environmental influences and is temperature-dependent. This significantly affects the composite load-bearing behaviour and defines the limits of application for the composite panels in the building industry. In order to facilitate during the development process and to build a design basis for the composite panels, material model parameters and simulation methods are required. Hence, an extensive test programme was conducted to investigate the material properties of the PMMA interlayer core by means of dynamic mechanical thermal analysis as well as uniaxial tensile and creep tests. The dataset and subsequent implementation into finite element software allowed for realistic simulations of the glass–plastic-composite panels and an extension of experimental results. Numerical simulations were performed with the commercial finite element programme ANSYS Workbench 19.3. Additionally, four-point bending tests were performed on composite test specimens with a different build-up and conventional glass panels to validate the material model and finite element simulations. These investigations and adopted material properties formed the basis for a numerical parametric study to evaluate the influence of stiffness, the load-bearing and lightweight performance in different build-ups. All the results are evaluated in detail and discussed in comparison with conventional monolithic and laminated glass panels. The dataset and material model parameters can be applied to further developments and design of lightweight glass–plastic-composite panels for structural applications in the building industry.

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Section: Introductionmentioning

confidence: 99%

Experimental investigations and numerical simulations of innovative lightweight glass–plastic-composite panels made of thin glass and PMMA

Hänig

Weller

2021

Glass Struct Eng

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“…Weiterführende Informationen und Hintergründe sind in [4,11,12] dargestellt. Weiterführende Informationen und Hintergründe sind in [4,11,12] dargestellt.…”

Section: Experimentelle Methodenunclassified

Zur Normung thermomechanischer Untersuchungen an polymeren Verbundglaszwischenschichten

et al. 2019

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In den vergangenen Jahren wurden zahlreiche Erkenntnisse zur thermomechanischen Charakterisierung polymerer Zwischenschichten in laminiertem Verbundglas publiziert. Die Neufassung der prEN 16613 veranlasst eine kritische Auseinandersetzung mit den der normativen Regelung bedürfenden Punkten. Dieser Beitrag greift verschiedene methodische und versuchstechnische Aspekte zur thermomechanischen Charakterisierung polymerer Zwischenschichten von Verbundglas auf und konsolidiert die Erkenntnisse und Erfahrungen der Autoren in diesem Zusammenhang. Neben Vorschlägen zur Durchführung der Versuche sowie theoretischen Modellen zur Auswertung von Steifigkeits-Temperatur-Messdaten werden offene Punkte zu den nationalen und internationalen Bemessungsnormen aufgezeigt. On the standardisation of thermomechanical investigations on interlayer polymers for laminated glass. In recent years, numerous findings have been published on the thermomechanical characterization of polymer interlayers for laminated glass. The new version of prEN 16613 causes a critical examination of the points requiring normative regulation. This contribution picks up various methodical and experimental aspects of the thermomechanical characterisation of polymeric interlayers of laminated glass and consolidates the findings and experiences of the authors in this context. In addition to proposals for the conduction of the tests and theoretical models for evaluating stiffnesstemperature measurement data, open points on national and international design standards are highlighted. Schlagwörter: Verbundglas, thermomechanisches Materialverhalten, Zwischenschichtsteifigkeit, Zeit-Temperatur-Verschiebungsprinzip, experimentelle Zwischenschichtcharakterisierung, Normung

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“…The key point of performance improvement is the addition of the polymeric interlayer. The representatives of the polymeric interlayer are polyvinyl butyral (PVB) (Hooper et al 2012), ionomers (SentryGlas, SG) (Martín et al 2020), and ethylene-vinyl acetate (EVA) (Schuster et al 2018). But they belong to thermoplastic polymers, which are sensitive to temperature and suffer performance degradation under high-temperature action.…”

Section: Introductionmentioning

confidence: 99%

Thermal Rheological Behavior of Composite Interlayer in Laminated Glass

Xie

Yang

Wang

et al. 2022

CGC

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Laminated glass is growing its application in structural entities. The thermoplastic polymeric interlayer plays an important role in transferring force and achieving the composite action in laminated glass, which reveals evident temperature-dependent behavior. In this study, a novel composite interlayer (SGE®) was devised to improve the resistance of laminated glass against environmental actions and to enhance the post-fracture performance. It is comprised of modified ethylene-vinyl-acetate (PVE®) and polycarbonate (PC). Through dynamic mechanical thermal analysis, the temperature-dependent characteristics of SGE, PVE, and PC materials were investigated in detail. The results show that the thermal rheological behavior of SGE is similar to that of PVE. The temperature ranges of glass transition and crystal melting of SGE material are -35°C ~ -25°C and 45°C ~ 75°C, respectively. The corresponding ranges are -35°C ~ -15°C and 35°C ~ 65°C for PVE material. And temperature ranges of the main transition are influenced by imposed frequency. Besides, the relationship between time and temperature for PVE, PC, and SGE material is extensively complicated and the complexity depends on the investigated mechanical property, temperature range, and time range. And the simple thermal rheological behavior emerges in the storage modulus of polymers, but loss modulus and loss factor conform to the complex thermal rheological behavior at the temperature range of -50°C ~ 120°C under the frequency range of 0.1 Hz ~ 10 Hz.

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Investigations on the thermorheologically complex material behaviour of the laminated safety glass interlayer ethylene-vinyl-acetate

Cited by 20 publications

References 24 publications

Experimental investigations and numerical simulations of innovative lightweight glass–plastic-composite panels made of thin glass and PMMA

Experimental investigations and numerical simulations of innovative lightweight glass–plastic-composite panels made of thin glass and PMMA

Zur Normung thermomechanischer Untersuchungen an polymeren Verbundglaszwischenschichten

Thermal Rheological Behavior of Composite Interlayer in Laminated Glass

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