Glass-fiber reinforced polyurethane foam composite manufactured by long fiber injection process lfi: lightweight potential investigations through mechanical properties and micro- structure characterization - Université de Pau et des Pays de l'Adour Access content directly
Proceedings ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability Year : 2022

Glass-fiber reinforced polyurethane foam composite manufactured by long fiber injection process lfi: lightweight potential investigations through mechanical properties and micro- structure characterization

Abstract

The Long Fiber Injection (LFI) is an innovative economic competitive manufacture process which combines injection and fiber spray-up technology to produce Glass Fiber Reinforced PU Foam composite (GFRPUF). Projected into open molds, LFI process allows complex shape, integrations of functionals components, a large weight reduction. We explored the lightweight potential of GFRPUF composites by using a highly foamed PU matrix about 175 kg.m3 and incorporating fiber mass content up to 50%. Mechanical properties tests were performed in compression and 3 points bending, while the real sprayed up fiber content and the fiber orientations were checked with a burn-off procedure and image processing. Influence of fibers incorporated contents on foam microstructure were also evaluated with Scanning Electron Microscopy and micro-computed tomography. Correlation on mechanical properties/microstructure was clearly demonstrated and wide alteration of the foam structure was observed starting from 30-35% mass content for the prepared GFRPUF composites
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Dates and versions

hal-04026740 , version 1 (13-03-2023)

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  • HAL Id : hal-04026740 , version 1

Cite

Frédéric Léonardi, Quentin Hoqui, Thomas Capelle, Jocelin Laborde. Glass-fiber reinforced polyurethane foam composite manufactured by long fiber injection process lfi: lightweight potential investigations through mechanical properties and micro- structure characterization. ECCM 2022 - Proceedings of the 20th European Conference on Composite Materials: Composites Meet Sustainability, 3, pp.144-151, 2022, 978-297016140-0. ⟨hal-04026740⟩
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