Rhéologie de panneaux composites bois/thermoplastiques sous chargement thermomécanique : aptitude au postformage
|Advisor:||Riedl, Bernard; Castéra, Patrick|
|Abstract:||This project deals with a new type of Wood Polymer Composite (WPC) able to be post moulded. Based on wood industry processing we developed different wood/adhesive/thermoplastic fibreboards. This exploratory work leads to an innovative WPC fibreboard dedicated to structural or decorative use. In order to reach sufficient mechanical properties we managed to improve the cohesion properties. In fact, weak interfacial adhesion is a recurrent problem of all Wood/Thermoplastic products. An original coating process of MAPP onto PP fibres gave great interfacial adhesion enhancement and mechanical properties similar to MDF panels. The post thermoforming ability was measured with an original thermoforming test. These investigations, through characterisation and modelling, allowed us to determine the role of different factors and their interactions. Our post mouldable composite WPC fibreboards are porous and made-up of a fibre network which showed a complex rheological behaviour. Morphology, concentration, distribution of each components and surface interactions between them explain this behaviour.|
|Document Type:||Thèse de doctorat|
|Open Access Date:||11 April 2018|
|Collection:||Thèses et mémoires|
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