Abstract:
The present invention relates to a molded body made of a foam material, at least one fiber (F) being located partly within the molded body, i.e. being surrounded by the foam material. The two ends of the respective fiber (F) which are not surrounded by the foam material thus protrude on one side of the corresponding molded body. The foam material comprises at least two interconnected foam material segments.
Abstract:
Composite article comprising at least two layers of component a) and at least one layer of component b). The layers and are alternately linked together. Component a) has a compressive modulus of at least 10 MPa in contrast to the component b), which has a compression stress value at a compression of 40% of not more than 20 kPa. Composite articles are semi-flexible materials due to alternating rigid and flexible segments within the articles. Articles optionally contain at least one additional layer of component b), which layer is also alternately linked together with the respective layers of component a). At least one layer crosses at least one layer with an angle α in the range of 0°
Abstract:
Die vorliegende Erfindung betrifft einen Formkörper aus Reaktivschaumstoff, wobei sich mindestens eine Faser (F) teilweise innerhalb des Formkörpers befindet, also vom Reaktivschaumstoff umschlossen ist. Die beiden nicht vom Reaktivschaumstoff umschlossenen Enden der jeweiligen Faser (F) ragen somit aus jeweils einer Seite des entsprechenden Formkörpers heraus. Der Reaktivschaumstoff wird durch ein Doppelbandschäumverfahren oder ein Blockschäumverfahren hergestellt. Ein weiterer Gegenstand der vorliegenden Erfindung ist ein Paneel, das mindestens einen solchen Formkörper sowie mindestens eine weitere Schicht (S1) umfasst. Weitere Gegenstände der vorliegenden Erfindung sind Verfahren zur Herstellung der erfindungsgemäßen Formkörper aus Reaktivschaumstoff bzw. der erfindungsgemäßen Paneele sowie deren Verwendung, beispielsweise als Rotorblatt in Windenergieanlagen.
Abstract:
The invention relates to a molded body made of extruded foam, characterized in that at least one fibre (F) is located with a fibre section (FB2) within the molded body and is enclosed by the extruded foam, while a fibre section (FB1) of the fibre (F) protrudes from a first flank of the molded body and a fibre section (FB3) of the fibre (F) protrudes from a second flank of the molded body and characterized in that the extruded foam is produced using an extrusion method which comprises the following steps: I) providing a polymer melt in an extruder; II) introducing at least one foaming agent into the polymer melt provided in step I), thus obtaining a foamable polymer melt; III) extrusion of the foamable polymer melt obtained in step II) from the extruder through at least one nozzle opening in a region of lower pressure, wherein the foamable polymer melt expands, thus obtaining an expanded foam; and IV) calibrating the expanded foam from step III) in that the expanded foam is passed through a shaping tool, thus obtaining the extruded foam.
Abstract:
The present invention relates to a molded body made of an expanded particle foam material, at least one fiber (F) being located partly within the molded body, i.e. being surrounded by the expanded particle foam material. The two ends of the respective fiber (F) which are not surrounded by the expanded particle foam material thus protrude on one side of the corresponding molded body. The invention also relates to a panel which comprises at least one such molded body and at least one additional layer (S1). The invention further relates to methods for the production of the molded bodies from expanded particle foam material or of the panels according to the invention and to the use thereof, for example as rotor blades in wind turbines.