Additive manufacturing support material

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United States of America

PATENT NO 12215202
APP PUB NO 20240110017A1
SERIAL NO

18196884

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Abstract

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This document describes a process of producing gel microparticles, which are consistent in size and morphology. Through the process of coacervation, large volumes of gel microparticle slurry can be produced by scaling up reactor vessel size. Particles can be repeatedly dehydrated and rehydrated in accordance to their environment, allowing for the storage of particles in a non-solvent such as ethanol. Gel slurries exhibit a Bingham plastic behavior in which the slurry behaves as a solid at shear stresses that are below a critical value. Upon reaching the critical shear stress, the slurry undergoes a rapid decrease in viscosity and behaves as a liquid. The rheological behavior of these slurries can be adjusted by changing the compaction processes such as centrifugation force to alter the yield-stress. The narrower distribution and reduced size of these particles allows for an increase in FRESH printing fidelity.

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Patent Owner(s)

  • CARNEGIE MELLON UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feinberg, Adam Pittsburgh, US 17 50
Hinton, Thomas Pittsburgh, US 7 36
Hudson, Andrew Pittsburgh, US 36 418
Lee, Andrew Pittsburgh, US 155 8193

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