Charge transport and storage in cork/TetraPak® composites: The influence of powder drying before composite manufacture

摘要

The control of humidity in the material is essential to obtain a material able to store electrical charge for long periods. All the intrinsic properties of the composite are hidden by the water which is more conductive. Consequently in order to make the material less conductive the amount of water must be reduced. The drying process of the powder of the composite allows reducing the amount of humidity but results have shown that water amount is still important. The hydrophobic paraffin is not preventing completely the reabsorption of water. Probably its percentage in the composite should be increased.