Compositions and methods for high-temperature jetting of viscous thermosets to create solid articles via additive fabrication

Described herein are methods and compositions for forming three-dimensional objects via material jetting processes, the methods including the repeated steps of selectively depositing a liquid thermoset material onto a surface from a nozzle of at least one jetting head in a first specified direction and exposing at least a portion of the liquid thermoset material to a source of actinic radiationin order to form a three-dimensional object from the cured thermoset material, wherein the jetting head is configured to eject droplets of o the liquid thermoset material from the nozzle at prescribed elevated operating temperatures, and wherein the liquid thermoset material is chosen so as to possessing prescribed viscosity and rheological characteristics.<br/