Influence of the additivation of graphene-like materials on the properties of polyamide for Powder Bed Fusion
The purpose of this work is to achieve the improvement of mechanical properties of polyamide 12 through dispersion of graphene-like nanofillers, for its use in Powder Bed Fusion. Nanocomposites have been prepared by conventional injection moulding in order to determine the mechanical and electrical behaviour of the different systems as a previous step for the design of new materials for Powder Bed Fusion. Structural characterisation and mechanical and electrical properties assessments were performed, showing the improvement of stiffness and mechanical strength for the prepared nanocomposites, compared to pristine polyamide. Electrical conductivity has been introduced as well in some of them. This enhancement of properties, together with the first tests carried out on nanocomposites prepared with Powder Bed Fusion, makes this study a starting point to obtain commercially interesting materials for this additive manufacturing technique.
Object of the present invention to provide a granular preparation hours even in average particle diameter, can be effectively controlled drug dissolution characteristics. The present invention provides a granule formulation, wherein that the first coating layer containing a water-insoluble polymer particles and inorganic particles and granular formulations of a drug having a first cladding layer of the coated drug particles and / or lipid components, the lipid component contains more C15 fatty acids.