Screeningverfahren zur Herstellung und Charakterisierung von Polyurethan-Schaumstoffen

摘要

A polyurethane-forming formulation is evaluated by measuring properties of polyurethane foam samples made with that formulation by, allowing a polyurethane foam-forming reaction mixture to foam; dividing the container containing the polyurethane foam; removing cylindrical sample bodies; and measuring the physical properties of polyurethane foam sample bodies. Evaluation of a polyurethane-forming formulation by measuring properties of polyurethane foam samples made with that formulation comprises: (1) introducing a polyurethane foam-forming reaction mixture into a container made of an air-tight material; (2) allowing the reaction mixture to foam in the optionally sealed container; (3) dividing the container containing the polyurethane foam in a manner such that at least one disk of a predetermined thickness is obtained; (4) removing cylindrical sample bodies having dimensions that are identical to within a range of tolerance and having identical density from the disk; and (5) measuring in parallel the physical properties of the polyurethane foam sample bodies.