COMPOSITE MATERIALS FOR THREE DIMENSIONAL (3D) PRINTING OBJECTS FOR CONSTRUCTION APPLICATIONS

摘要

A 3D printer material that includes one or more additives or additive materials mixed with a base material (e.g., a powder for use in binder jetting or a paste for use in extrusion). The additives may be fine powders (or spherical additives), fibers, aggregates, or a combination thereof with the particular additive material(s) and the ratio of additive to base being carefully chosen to achieve desired physical and/or chemical characteristics in the 3D object printed using the new 3D printer material. The addition of powders and/or fibers serves to strengthen the 3D printed material produced through binder jetting or extrusion. In particular, the new 3D printer materials address the issue of weak interfaces between printed horizontal layers since the additives either improve packing or bridge the layers of the 3D printed object.