Composite plastics material

Details Composite plastics material Composite plastics material

B - Operations, Transporting

29

C

B29C 70/02 (2006.01) C08K 3/36 (2006.01) C08J 5/04 (2006.01) C08K 7/02 (2006.01)

Patent

CA 2642075

A composition for making a composite plastics material, comprising a polymer, wood fibre and microsilica. The microsilica, i.e., silica fume, is added for the purpose of reducing the water absorption while maintaining, or improving, the flame retardancy, mechanical performance and processibility of the material. The intended polymers for the composite materials are polyethylene (PE), polyvinylchloride (PVC), polypropylene (PP) or polyethylene terephtalate (PET). The composites can be shaped through extrusion or heat-moulding.

L'invention concerne une composition pour la fabrication d'un matériau plastique composite, comprenant un polymère, des fibres de bois et une microsilice. La microsilice, c'est-à-dire de la fumée de silice, est ajoutée dans le but de réduire l'absorption de l'eau tout en maintenant, ou en améliorant, les propriétés ignifuges, les performances mécaniques et la maniabilité du matériau. Les polymères utilisés pour les matériaux composites sont le polyéthylène (PE), le chlorure de polyvinyle (PVC), le polypropylène (PP) ou le polyéthylène téréphtalate (PET). Les composites peuvent être mis en forme par extrusion ou moulage à chaud.

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