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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/9595

    Título
    Improving the adhesion of satin XPS to sandstone with customized polyurethane adhesives for sustainable facade cladding and thermal insulation
    Autor
    Miguel Ortega, Alvaro
    González Moreno, SaraAutoridad UBU Orcid
    González Martín, José ManuelAutoridad UBU
    Arroyo Sanz, RaquelAutoridad UBU Orcid
    García García, Félix ClementeAutoridad UBU Orcid
    Trigo López, MiriamAutoridad UBU Orcid
    Vallejos Calzada, SaúlAutoridad UBU Orcid
    Publicado en
    Journal of Building Engineering. 2024, V. 95, 110301
    Editorial
    Elsevier
    Fecha de publicación
    2024-10
    ISSN
    2352-7102
    DOI
    10.1016/j.jobe.2024.110301
    Resumen
    Six PU adhesives were synthesised with two different polyols (PPG and PEG based) of three molecular weights, namely 400, 1000 and 2000 g mol−1, and MDI, to prepare sandstone-XPS isolating façade panels. The chemical structure, thermal properties, and adhesion properties in the preparation of the panels were evaluated. Both sandstone and XPS are commonly used materials in construction due to their excellent insulating properties, durability, flexibility, water resistance, and aesthetic appeal, making them environmentally attractive. The industry trend is towards using sanded XPS in these panels, as better adhesion is achieved with typical adhesives compared to satin or unsanded XPS. However, this entails waste generation from sanding, a higher panel price and a difference in adhesive consumption from 309 g m−2 to 684 g m−2 for unsanded (or satin) and sanded XPS, respectively. In this study, all prepared panels exhibit good adhesion properties, even those made with satin XPS. Panels prepared from PPG-based adhesives show better adhesion performance than those made from PEG, reaching 0.52 ± 0.07 N mm−2 with the 1000 g mol−1 PPG polyol-based adhesive. These highest adhesion properties are due to the optimal balance of flexible and rigid segments in the polymer material structure. The adhesive maintains its high performance even after harsh temperature and humidity conditions. After accelerated ageing with heat, cold and water, the probes retain between 65 and 71 % of the original tensile strength (0.34 ± 0.03, 0.35 ± 0.07 and 0.37 ± 0.01 N mm−2, respectively). This finding suggests an interesting starting point for cost savings associated with sanding and reduction in XPS waste generation, making them economically and environmentally appealing.
    Palabras clave
    Siliciclastic sandstone
    Single-component PU
    Ageing study
    Sustainable construction
    Polyethylene glycol
    Polypropylene glyco
    Poly-MDI
    Materia
    Materiales de construcción
    Building materials
    Polímeros
    Polymers
    Construcción
    Building
    Ingeniería civil
    Civil engineering
    URI
    http://hdl.handle.net/10259/9595
    Versión del editor
    https://doi.org/10.1016/j.jobe.2024.110301
    Aparece en las colecciones
    • Artículos GITECA
    • Artículos GIIE
    • Artículos POLYMERS
    Atribución 4.0 Internacional
    Documento(s) sujeto(s) a una licencia Creative Commons Atribución 4.0 Internacional
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    Ortega-jbe_2024.pdf
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