Method of making a polymer composite
AssigneeXerox Corporation
InventorsBarkev Keoshkerian, Rachel Prestayko, Kimberly D. Nosella, Valerie M. Farrugia
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Abstract
A method of making a composite feed material for fused deposition modeling (FDM) is disclosed. The method comprises providing composite particles made by a process of emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. A composite feed material is formed for fused deposition modeling from the composite particles. The composite feed material is in a form selected from a filament and a paste.
Claims18
A method of making a composite feed material for fused deposition modeling (FDM), the method comprising:
- providing composite particles made by a process of emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material;
- and
- forming a composite feed material for fused deposition modeling from the composite particles, the composite feed material being in a form selected from a filament and a paste,
- wherein the emulsion aggregation process comprises:
- providing the at least one thermoplastic polymer in the form of a stable emulsion of latex polymer particles;
- destabilizing the emulsion and aggregating the latex polymer particles in the presence of the at least one carbon particle materials and an aggregant to form a dispersion of aggregate particles, the aggregate particles comprising both the latex polymer particles and the carbon particle material;
- stabilizing the dispersion to form an emulsion of the aggregate particles, thereby freezing growth of the aggregate particles at a particle size ranging from about 500 nm to about 100 microns;
- and
- heating the aggregate particles to coalesce the latex polymer particles and form the composite particles.
A method of making composite particles, the method comprising:
- providing a stable emulsion of latex thermoplastic polymer particles;
- destabilizing the emulsion and aggregating the latex thermoplastic polymer particles in the presence of at least one carbon particle material and an aggregant to form a dispersion of the aggregate particles, the aggregate particles comprising both the latex thermoplastic polymer particles and the carbon particle material;
- stabilizing the dispersion to form an emulsion of the aggregate particles, thereby freezing growth of the aggregate particles at a particle size ranging from about 500 nm to about 100 microns;
- and
- heating the aggregate particles to coalesce the latex polymer particles and form composite particles comprising the coalesced latex polymer and the carbon particle material, the carbon particle material being in an amount of at least 5% by weight, based on the total weight of the composite particles.
Dependencies are inferred from the claim text.