6.3 Biocomposites for the automotive sector (fibres)

Hemp bast fibres are extremely strong and at the same time have a low density. This makes the fibres suitable for fibre-reinforced polymers ('biocomposites'). The fibres are mixed with a plastic and hot-pressed into a (moulded) product. Instead of plastic, the fibres can also be bonded with a resin. The fibres reinforce the polymer, thus requiring less material for the same functionality (strength). Relatively short fibres already give a good reinforcement of the material.

Bio-based fibre composites are widely used in cars, for example in door panels and trunk shelves. A big advantage in cars is that the low density of biofibres makes the car slightly lighter, which saves on fuel consumption. In addition, complex shapes can be made relatively easily. Also, in case of collision, no sharp edges arise as would occur with glass fibre composites. The good formability also makes these composites suitable as facade cladding.

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Biocomposite facade panels, containing an air-to-heat pump

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Biocomposite facade cladding of the 1st floor. Photos NPSP.