A pyrolysis model for steel-insulation sandwich building facade systems under fire
article
Buildings façades can be made with sandwich panels, which consist of two thin-walled plates (faces) and a core. Traditionally, materials like stone wool, PUR (polyure thane), PIR (polyisocyanurate), EPS (expanded polysty rene), and XPS (extruded polystyrene) have been used for the core. The flammability of these materials has been in vestigated by researchers such as Giunta d'Albani et al. [1]. However, with advancements in material science, also polymer composites are used for the core, for example, to increase stiffness [2,3]. While most research has focused on the mechanical behaviour of such novel sandwich pan els to overcome traditional panel problems [4], composite materials may increase fire risks. For instance, Khan et al. found that typical flame-retardant aluminium composite panels could ignite at a lower heat flux than traditional panels [5]. Birman et al. concluded that it is necessary to account for the process of resin decomposition in sandwich panels (including composites), as this may significantly af fect panel deformations [6]. This is due to chemical reac tions that take place when composite materials are ex posed to fire, and the resin degrades, partly becoming a gaseous product, changing thermal and mechanical properties
Topics
TNO Identifier
991800
Source
CE/Papers, 6(3/4), pp. 1-6.
Pages
1-6