As part of the European project BASAJAUN (Building a Sustainable Joint between Rural and Urban Areas through Circular and Innovative Wood Construction Value Chains), our objective was to develop thermoplastic compounds based on biopolymers, wood particles and fire-retardants which can be processed by film extrusion and hot-pressed without adhesives onto plywood.
Such films should allow for easier material recycling compared to HPL. For example, plywood with thermoplastic films could be milled and re-used in particleboards or wood-polymer composites. This would contribute to a circular approach in the recycling of wood-based products. It was our objective to test different biopolymer-based compounds and films in terms of reaction-to-fire performance and to investigate the processability and surface adhesion on plywood. Benchmark was a commercial plywood with fireretarded HPL. As a further reference, we also included plywood impregnated with fire-retardant (without any laminate).
Keywords: fire-retardancy, biopolymers, plywood, high-pressure laminate, BASAJAUN project
Authors
Arne Schirp
Fraunhofer Institute for Wood Research (WKI), Braunschweig, Germany
Paul Schmidt
Fraunhofer Institute for Wood Research (WKI), Braunschweig, Germany
Sara Villanueva Diez
TECNALIA, Basque Research and Technology Alliance (BRTA), Azpeitia-Gipuzkoa, Spain
Aitor Barrio
TECNALIA, Basque Research and Technology Alliance (BRTA), Azpeitia-Gipuzkoa, Spain
Login to download the PDF