Feasibility Study of Additive Manufacturing of Thermally Conductive PA12 Powders by Selective Mask Sintering

摘要

Selective mask sintering (SMS) is a new powder-based additive manufacturing technique. Here, the material is molten in laminar direction by broad band infrared radiation. By using this technique, there is a high potential to create three-dimensional thermally conductive parts, layer by layer. In this publication, commercially available PA12 powders are modified by adding thermally conductive fillers such as aluminum grit and copper spheres. Process relevant powder properties were characterized by differential scanning calorimetry, rotational viscosimetry and thermal conductivity measurements. Subsequently, the morphologies, mechanical behaviors as well as thermal conductivities of manufactured specimens were investigated.