This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

Disclosed in the present invention are a method for water-repellent coating treatment of a boron nitride powders and water-repellent treated boron nitride, the method comprising producing a water-repellent coating layer on the surface of the boron nitride powders by plasma treatment using a silicon-containing organic compound containing silicone, wherein the water-repellent coating layer remains on the boron nitride through chemical binding with the boron nitride even after ultrasonic water washing.

A three-dimensional object producing method including: forming a powder material layer with a powder material for three-dimensional object formation, where the powder material includes a base material and a resin including a reactive functional group; and applying a curing liquid to the powder material layer to form a cured product, where the curing liquid contains a curing agent capable of forming a covalent bond with the reactive functional group, wherein the curing agent includes an aliphatic compound having two or more isocyanate groups at a molecular terminal thereof.

A plasticizing device that plasticizes a material to produce a molten material includes a driving motor, a screw that has a grooved surface on which a groove is formed and rotates by the driving motor; and a barrel having a facing surface that faces the grooved surface and has a communication hole formed in the center and a heater, wherein the screw has a cooling medium flow path provided inside the screw, an inlet portion that communicates with the cooling medium flow path and introduces a cooling medium from the outside of the screw, and an outlet portion that communicates with the cooling medium flow path and discharges the cooling medium to the outside of the screw.

The present disclosure relates to systems, methods and resins for additive manufacturing. In one embodiment, a method for additive manufacturing of a ceramic structure includes providing a resin including a preceramic polymer and inorganic ceramic filler particles dispersed in the preceramic polymer. The preceramic polymer is configured to convert to a ceramic phase. The method includes functionalizing inorganic ceramic filler particles with a reactive group and applying an energy source to the resin to create at least one layer of the ceramic phase from the resin.

A method of manufacturing a silicon-containing oxide-coated aluminum nitride particle; a method of manufacturing a heat dispersing resin composition containing the silicon-containing oxide-coated aluminum nitride particle; and the silicon-containing oxide-coated aluminum nitride particle. The method of manufacturing includes: a first step of covering the surface of the aluminum nitride particle with an organic silicone compound including a specific structure; and a second step of heating the aluminum nitride particle covered with the organic silicone compound at a temperature of 300° C. or more and less than 1000° C., wherein the content of carbon atoms in the silicon-containing oxide-coated aluminum nitride particle is less than 1000 ppm by mass.

A composite tile is comprised of coal dust and a pre-ceramic polymer that are mixed together and pyrolyzed to form a ceramic composite. For example, a chemical reaction during pyrolysis chemically converts at least a portion of the coal dust and pre-ceramic polymer to a fire proof ceramic composite suitable for use as a roofing tile either as pyrolyzed or as post-treated to seal cracks and pores formed during pyrolysis.

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.

The present invention relates to preceramic polymer grafted nanoparticles and as well as methods of making and using same. Advantages of such preceramic polymer grafted nanoparticles include, reduced out gassing, desired morphology control and desirable, distinct rheological properties that are not found in simple mixtures. As a result, Applicants' preceramic polymer grafted nanoparticles can be used to provide significantly improved, items including but not limited to hypersonic vehicles, jets, rockets, mirrors, signal apertures, furnaces, glow plugs, brakes, and armor.

The method includes the steps of: a) selecting particles with particular slenderness ratios and diameters from SiC powder to serve as selected SiC material powder; b) coating a PVA coating on particles of the selected SiC material powder so that the PVA coating and the selected SiC material powder are combined into a particulate ceramic material; c) pressing the particulate ceramic material into a ceramic base body; d) sintering the ceramic base body to form a fixed shape and forming completely continuous channels from an inside to a surface thereof by cooling; and e) infiltrating the ceramic base body with molten aluminum. The ceramic composite material made by the method includes a ceramic base body having completely continuous channels from an inside to a surface thereof; an aluminum filler filled in the channels; and an aluminum coating disposed on the ceramic base body and integratedly connecting with the aluminum filler.