ME - Posters
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- Enhancing modular facade systems with natural materials: Durability and sustainability of wood-based solutions [Poster]Publication . Morgado, Vanessa; Ferreira, Cristina; Vieira, Ana; Alves, Isabel N.; Donato, Mariana; Costa, Luís; Rocha, Jorge; Barreiros, Maria Alexandra; Cunha Diamantino, Teresa
- Development of lightweight Sandwich Composites with improved Reaction to Fire and UV resistance for Double Curvature Façade Panels [Poster]Publication . Rocha, Helena; Vasconcelos, Miguel; Malheiro, Joana; Nascimento, António; Paula, Delves; Simões, Nuno; Barreiros, Maria Alexandra; Cunha Diamantino, Teresa; Ferreira, Cristina; Gonçalves, Diana; Antunes, PauloABSTRACT: Buildings with double curvature façades can be aesthetically pleasing, being capable of enchanting both architects and the general public Though, manufacturing of such façades can be a challenge in both technologic and economic terms Traditional molding technologies demand a unique mold for each panel geometry resulting in substantial costs related to raw materials and storage space, and long lead times for designing and manufacturing. A reconfigurable multipoint mold has been identified to solve this issue, where an array of moving pins can have their height quickly adjusted to form the required shape and molding surface. Another present technological challenge is the highly demanding fire resistance requirements Certain European countries require that public and civil buildings comply with the highest grades of EN 13501 standard, A 2 s 1 d 0 and B, s 1 d 0. That is a serious constraint when developing lightweight sandwich fiber reinforced polymer FRP composites, as polymeric materials do not naturally present good reaction to fire behavior Furthermore, the polymeric raw materials should present suitable processability with the reconfigurable multipoint mold and supporting processing equipment and allow the manufacturing of sandwich structures Sandwich composites structures are lightweight solutions with high stiffness, consisting of two composite laminate faces, separated by a lightweight core material, commonly made of foam or honeycomb.
- Patinas on silverwork: Analytical approach for distinguishing intentionally and naturally corroded surfaces [Poster]Publication . Landeiro, Daniela; Barreiros, Maria Alexandra; Manso, M.ABSTRACT: The patination of silverwork to modify surface color and finish became increasingly popular in 19th-century Europe, particularly among renowned artists such as René Lalique (1860-1945), Henri Vever (1854–1942), and Georges Fouquet (1862–1957). This decorative technique is typically achieved using sulfur-based solutions, resulting in blackish or bluish silver sulfide patinas¹. Patinated silver surfaces often exhibit a characteristic glossy finish, while environmental degradation typically results in a dull, matte appearance, creating visually heterogeneous surfaces that require conservation actions (Fig. 1). However, the chemical similarity between artificial patinas and naturally formed corrosion layers presents a significant challenge - Selecting a cleaning approach that effectively removes the natural corrosion without damaging the original decorative surface².
- Intumescent Gels for Fire-Resistant Glass: Thermal Insulation, UV Protection, and Durability Studies [Poster]Publication . Esteves, M. Alexandra; Capelo, Anabela; Donato, Mariana; Oliveira, Fernando; Ferreira, Cristina; Alves, Isabel N.; Correia, Jose B.; Silva, Ricardo Magno Lopes; Hashim, Hurraira; Roy, Deepto; Passos Teixeira, Jennifer; Rocha, Jorge; Salomé, Pedro; Cunha Diamantino, Teresa; Barreiros, Maria Alexandra
- Fire-resistant materials: characterization and thermal behavior of intumescent gels for fire resistant glass [Poster]Publication . Donato, Mariana; Esteves, M. Alexandra; Capelo, Anabela; Oliveira, Fernando; Ferreira, Cristina; Alves, Isabel N.; Morgado, Vanessa; Correia, Jose B.; Teixeira, Jennifer P.; Oliveira Fernandes, Carolina; Silva, Ricardo Magno Lopes; Rocha, Jorge; Salomé, Pedro; Cunha Diamantino, Teresa; Barreiros, Maria Alexandra
- NEWS4CSP Project: New coatings approaches to protect metallic materials from heat transfer fluids [Poster]Publication . Cunha Diamantino, Teresa; Pedrosa, Fátima; Paiva Luís, Teresa; Ferreira da Silva, Eduardo; Gonçalves, Francisco; Monteiro, Renato; Cardoso, João
- New triazine-phosphonate dopants for proton exchange membranes (PEM) [Poster]Publication . Teixeira, Fatima; Teixeira, António P. S.; Rangel, C. M.ABSTRACT: The establishment of a new paradigm for energy is underway demanding new energy sources for the increasing needs of society with none or lower environmental impact. To reach the ambitious and well defined targets for decarbonized energy systems it is needed new clean technologies. Some of them rely on well-established or emerging electrochemical devices, including batteries, fuel cells and CO2 and water electrolysers, whose applications and performances depend on key components such as their separators/ion-exchange membranes.1,2 The most studied and already commercialized membranes go by the brand name of Nafion, which showed great chemical stability, but their high proton conduction depends on their water content, markedly limiting their operating temperature range. Our previous studies have demonstrated that the incorporation of aryl or heterocyclic phosphonic acid dopants into Nafion, by casting, results in an enhancement of the proton conductivity1-4 and stability5 of the Nafion doped membranes.
- New SPEEK doped membranes for ion exchange polymer electrolytes [Poster]Publication . Teixeira, Fatima; Teixeira, António P. S.; Rangel, C. M.
- Nuclear microprobe: the tool to characterize new materials for energy conversion [Poster]Publication . Corregidor, V.; Alves, L. C.; Barreiros, M. Alexandra; Salomé, P.M.P.
- Optoelectronic Study of Perovskites/SnO2 based Metal-Insulator-Semiconductor Structures [Poster]Publication . Cunha, J.M.V.; Barreiros, M. Alexandra; Curado, M.A.; Lopes, T.S.; Oliveira, K.; Oliveira, A.J.N.; Vinhais, C.; Flandre, Denis; Teixeira, J.P.; Silva, Ana G.; Fernandes, P.A.; Salomé, P.M.P.