A binder for an injection moulding composition, the binder includes, in percentage by mass and for a total of 100%: 35% to 60% of a component (a), or polymer base, made of a polymer or a mixture of polymers, each of the polymer being non-amphiphilic and having a mass average molar mass greater than or equal to 5,000 g/mol, 30% to 55% of a component (b), or wax, made of a polymer or a mixture of polymers, each of the polymer being non-amphiphilic and having a mass average molar mass less than 5,000 g/mol, and less than 10% of an amphiphilic component (c), or surfactant, and less than 10% of other components (d). The polymer base comprising 2% to 15% of a styrene-ethylene-butylene-styrene copolymer (SEBS), in percentage by mass based on the mass of the binder.

A green ceramic composition comprising (i) ceramic particles, (ii) a synthetic polymeric binder, the synthetic polymeric binder having (a) monomeric units deriving from a soft monomer, (b) monomeric units deriving from a hard non-acidic monomer, (c) monomeric units deriving from an acidic monomer, and (d) monomeric units deriving from a hydroxy-functionalized monomer, and (iii) water.

A three-dimensional (3D) printing device presented in this invention has a novel printing head design that can be used with a cost-effective 3D printing ink based on cost-competitive camphene solvent utilizing its burning-free, room-temperature solidifying and sublimating properties for 3D printing purposes. The unique combination of the new printing head with pressured air control and the invented ink allows for a mass-production of complex metallic components and parts with a variety of compositions for use in advanced manufacturing in a highly cost-effective way.

According to an example, a composition may include a high melt temperature build material in the form of a powder; a first low melt temperature binder in the form of a powder; and a second low melt temperature binder in the form of a powder; and in which the first low melt temperature binder melts at a temperature that is different from the second low melt temperature binder.

A composition suitable for 3D printing. The composition is in the form of a filament and includes: a) a metal and/or ceramic powder: b) an organic binding phase including two parts: b1) at least one thermoplastic compound selected from thermoplastic polymers and waxes; and b2) at least one volatile organic compound which has a vapor pressure at 50° C., ranging from more than 0 bar to 0.05 bar, wherein the amount of the at least one volatile organic compound ranges from more than 0.5% to 40% (v/v) by volume relative to the total volume of the composition.

A foam formulation for preparing polymer-grafted nanoparticles stabilized foam, including nanoparticles, monomers of a polymer to be grafted on the nanoparticle surface, polymerization initiator, surfactant and water. The polymer-grafted nanoparticles may act together with the surfactant to form single-layer assembling at the boundary of bubbles, which in turn stabilizes the foam. The generated foam shows much better stability in long-term storage, high-temperature drying process and alkaline environments than conventional wet foams. A method of preparing solid porous materials with the foam is also provided.

A binder solution comprises greater than or equal to 0.5 wt % and less than or equal to 20 wt % of nanoparticles, a thermoplastic binder, and a solvent. The nanoparticles may comprise metallic nanoparticles comprising nickel, silver, chromium, aluminum, cobalt, iron, or combinations thereof. The nanoparticles may comprise ceramic nanoparticles, the comprising alumina, aluminum nitride, zirconia, titania, silica, silicon nitride, silicon carbide, boron nitride, or combinations thereof. A method of manufacturing a part includes depositing a layer of particulate material on a working surface, applying a binder solution into the layer of particulate material in a pattern, repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder solution, and curing the applied binder solution in the plurality of layers of particulate material with the applied binder solution to evaporate the solvent and thereby form a green body part.

Improved formulations of an interface material are described. These formulations may, in at least some cases, match and/or accommodate dimensional changes in the part and/or support structure throughout thermal processing (e.g., debind and sintering, or sintering only). Furthermore, these formulations may also maintain the property of resisting bonding between the interface and the part and/or support structure while also maintaining a physical separation between the part and support structure. In some cases, an improved interface material may accommodate strain associated with the shrinkage of a part (and optionally support structure) during sintering while also minimally impacting the ability of the part (and optionally support structure) to shrink or otherwise change in dimension. In some cases, the interface material may include one or more fugitive phases that are removed during thermal processing (e.g., through pyrolysis of the fugitive phase(s)).

A melt-deposition additive composition including, based on the total weight of the composition, from 75 to 90.75% by weight of at least one inorganic material, and a polymer phase including: from 9 to 20% by weight of at least one thermoplastic elastomer, from 0.25 to 5% by weight of at least one low density polyethylene, from 0 to 5% by weight of at least one polyethylene glycol having a molar mass of from 5,000 to 20,000 g/mol, and from 0 to 3% by weight of polyethylene terephthalate, preferably glycol, for use in a melt-deposition additive manufacturing process. A method for the preparation of a 3D article using this composition, the article obtained comprising at least 99% by weight of inorganic material(s) with respect to the total weight of the article and uses of this article.

Techniques and compositions are disclosed for three-dimensional printing with powder/binder systems including, but not limited to, metal injection molding powder materials, highly-filled polymer composites, and any other materials suitable for handling with various additive manufacturing techniques, and further suitable for subsequent debinding and thermal processing into a final object.