Fraunhofer ICT and partners have combined the LFT direct process technology with high gloss polymer films for exterior body panels. The technology is a promising starting point for the manufacturing of large automotive exterior parts. Oliver Geiger, Dr Frank Henning and Prof. P. Eyerer of Fraunhofer ICT, Germany, and R. Bruessel and Heinrich Ernst of Dieffenbacher GmbH and Co KG, Germany, explain. The combination of high-gloss polymer films with long fibre reinforced thermo-plastics as the back-moulding material indicates the potential of thermoplastic composite materials in the production of large-area automotive exterior body panels with Class A quality. By adapting the LFT-D-ILC process it is possible to produce long fibre-reinforced thermoplastics based on styrene co-polymers. These are used for back-compression moulding processes. It has proved possible to eliminate the known occurrence of fibre agglomerations or non-impregnated fibres on the surface of LFT components. The matrix resin properties of LFT materials based on styrene copolymers give them a significantly lower anisotropy than long fibre-reinforced polypropylene in terms of stiffness and thermal linear expansion.
LFT-D: materials tailored for new applications
2006
6 Seiten, 9 Bilder, 1 Tabelle
Aufsatz (Konferenz)
Englisch
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