A cement system including a binder for use in freeform fabrication

摘要

A binder composition comprises an organic and/or an inorganic acid including a phosphate ion, a polyacid and a primarily aqueous solvent. An independent claim is included for freeform fabrication of a three-dimensional object involving iteratively infiltrating individual layers of powder that includes a polymer and at least one inorganic phosphate, with the aqueous binder composition. The polyacid of the binder composition reacts at least with the inorganic phosphate. In the process, the infiltrated powder layers are formed adjacent to one another.