RT info:eu-repo/semantics/article
T1 Improving the adhesion of satin XPS to sandstone with customized polyurethane adhesives for sustainable facade cladding and thermal insulation
A1 Miguel Ortega, Alvaro
A1 González Moreno, Sara
A1 González Martín, José Manuel
A1 Arroyo Sanz, Raquel
A1 García García, Félix Clemente
A1 Trigo López, Miriam
A1 Vallejos Calzada, Saúl
K1 Siliciclastic sandstone
K1 Single-component PU
K1 Ageing study
K1 Sustainable construction
K1 Polyethylene glycol
K1 Polypropylene glyco
K1 Poly-MDI
K1 Materiales de construcción
K1 Building materials
K1 Polímeros
K1 Polymers
K1 Construcción
K1 Building
K1 Ingeniería civil
K1 Civil engineering
AB 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.
PB Elsevier
SN 2352-7102
YR 2024
FD 2024-10
LK http://hdl.handle.net/10259/9595
UL http://hdl.handle.net/10259/9595
LA eng
NO We gratefully acknowledge the financial support provided by all funders. This work was supported by the Regional Government of Castilla y León (Junta de Castilla y León) and by the Ministry of Science and Innovation MICIN and the European Union NextGenerationEU PRTR. Author Saul Vallejos received grant  BG22/00086  funded by the Spanish Ministerio de Universidades. Author Álvaro Miguel's work was facilitated by the Margarita Salas grant ( CA1/RSUE/2021–00409 ), funded by the Universidad Autónoma de Madrid. The financial support provided by Fondo Europeo de Desarrollo Regional-European Regional Development Fund (FEDER, ERDF) and Regional Government of Castilla y León -Consejería de Educación, Junta de Castilla y León- ( BU025P23 ) is gratefully acknowledged. We also acknowledge the funding provided by Grant PID2020-113264RB-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”.
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024