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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Christiane, Dr. Kothe
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Topics
Publications (9/9 displayed)
- 2024Investigations on the thermo-mechanical behaviour of densified veneer wood for cryogenic applicationscitations
- 2021Mechanical and chemical analysis of structural silicone adhesives with the influence of artificial agingcitations
- 2021Thin glass in façades: Adhesive joints for thin glass composite panels with 3D printed polymer cores
- 2020Thin glass composite panels: Investigation of the adhesive joint between 3D printed polymer core and glass
- 2016Adhesive joints for bonded point fixings in façades and glass structures
- 2015Investigations on the aging resistance of sealing materials for the protection of bonded point fixings.
- 2015Investigating the resistance of sealing materials for the protection of bonded point fixings
- 2010Thermal stability of polymeric interlayer materials
- 2009Thermo Mechanical Behaviour of Polymeric Interlayer Materials
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document
Investigating the resistance of sealing materials for the protection of bonded point fixings
Abstract
Load-bearing, structural bonds are especially suitable for the material glass and become increasingly important in glass construction. Examples are bonded point fixings in façades.An essential requirement for this application is the durability of the adhesive joints. In case of façade failure, there is a high danger to people,<br/>so that the risk of this failure must necessarily be reduced. A failure of the joints is often caused by aging. In particular, this occurs when the adhesive is in contact with harmful media, e.g. water or corrosive media like acid rain, seawater and detergents. The joint is penetrated by the harmful media, which results in adhesive failure. Hence, the materials have to be protected from environmental influences. For this purpose, in glass constructions sealing elements with different structures and functions are used.There exist jointing elements without external pressure like sealing compounds and porous or cellular gaskets. In contrast, for point fixings jointing elements with external pressure are applied. These also include O-rings, which are suitable sealing systems for bonded point fixings. O-rings are based on different polymer materials and are available in a wide range of Shore hardnesses. In addition, the<br/>advantages of O-rings lie in their ease of installation, their small space requirement, their low costs and their high impermeability. They are used in many industrial fields and can be selected individually according to the purpose.<br/>O-rings ensure the protection of the adhesive joint but only if they withstand even the aging process and not lose their function over the expected lifetime. Therefore, it was the aim of the study to test O-rings based on EPDM<br/>(ethylene propylene diene monomer rubber), MVQ (methyl vinyl silicone rubber) and NBR (nitrile butadiene rubber) with different Shore hardnesses for their resistance to aging. For this purpose, various artificial aging methods<br/>were used, which considered, in addition to the critical harmful media, also heat and UV aging.