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Physical and mechanical characterization of polyurethane foam core of sandwich ...
Benzo, Pier Giovanni; Gontijo, Guilherme Lopes; Abreu Filho, Marco A.; Dushimimana, Aloys; Oliveira, Sandra Cristina; Denchev, Z.; Pereira, João MiguelSandwich foaming is a manufacturing process in which a liquid monomer mixture is injected on the bottom face sheet of the sandwich panel where it polymerizes to form cross-linked polyurethane (PUR) foam providing an adhesive joint between the bottom and upper metal sheets. The single-step process avoids manual operations in the assemblage of the panel and the use of adhesive. However, the PUR foam in the core o...
Influence of temperature and different post curing conditions on the mechanical...
Abreu Filho, Marco A.; Gontijo, Guilherme Lopes; Oliveira, Sandra Cristina; Benzo, Pier Giovanni; Dushimimana, Aloys; Denchev, Z.; Pereira, João MiguelSandwich panels based on cold-formed-steel (CFS) face sheets and polyurethane foam (PUR) core were designed and manufactured to be used as a feasible solution for the rehabilitation of degraded floors. This panel is manufactured by a continuous process, whereby the polymerization and foaming of the PUR core is performed simultaneously with the face sheets assembling and their adhesive bonding in certain zones. ...