2026-07-07T18:48:47Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/95952024-10-09T00:05:15Zcom_10259_5498com_10259_5086com_10259_2604com_10259_6251com_10259_4313col_10259_5499col_10259_6252col_10259_4314

Miguel Ortega, Alvaro González Moreno, Sara González Martín, José Manuel Arroyo Sanz, Raquel García García, Félix Clemente Trigo López, Miriam Vallejos Calzada, Saúl 2024-10-08T12:15:57Z 2024-10-08T12:15:57Z 2024-10 2352-7102 http://hdl.handle.net/10259/9595 10.1016/j.jobe.2024.110301 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. 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”. application/pdf video/mp4 eng Elsevier Journal of Building Engineering. 2024, V. 95, 110301 https://doi.org/10.1016/j.jobe.2024.110301 info:eu-repo/grantAgreement/MIU/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/BG22%2F00086/ES/ info:eu-repo/grantAgreement/UAM//CA1%2FRSUE%2F2021-00409/ info:eu-repo/grantAgreement/Junta de Castilla y León//BU025P23//Polímeros inteligentes. Aplicación en seguridad y control alimentario y biomédico, construcción sostenible y biorremediación (pin)/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113264RB-I00/ES/DISEÑO, SINTESIS Y CARACTERIZACION DE POLIMEROS INTELIGENTES. APLICACION DE SENSORES QUIMICOS POLIMERICOS EN CONTROL Y SEGURIDAD ALIMENTARIA Y EN EL AMBITO SANITARIO/ Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Siliciclastic sandstone Single-component PU Ageing study Sustainable construction Polyethylene glycol Polypropylene glyco Poly-MDI Materiales de construcción Polímeros Construcción Ingeniería civil Building materials Polymers Building Civil engineering Improving the adhesion of satin XPS to sandstone with customized polyurethane adhesives for sustainable facade cladding and thermal insulation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of Building Engineering 95 110301