A method includes a slurry preparing process of preparing a ceramic powder slurry, an impregnating process of impregnating the slurry into an inorganic fiber sheet to form an impregnated sheet, a sheet winding process of winding an impregnated sheet around a core to form a sheet-wound core, a pressing process of disposing the impregnated sheet between a first mold and a second mold opposed to each other and interposing a spacer therebetween at a portion where the impregnated sheet is not positioned, and then clamping the first mold and the second mold with a first fastener to come close in a direction facing each other, thereby applying pressure to the impregnated sheet, a drying process of heating and drying the impregnated sheet, and a firing process of firing the sheet after drying.

Systems and methods for manufacturing unidirectional fiber prepreg tapes for CMC articles are provided. In one exemplary aspect, the method includes casting a matrix material on a carrier film to form a matrix film. The matrix material of the matrix film is then allowed to dry for a predetermined time. The matrix film is then wrapped on a drum and the matrix material is wet to a predetermined viscosity with a solvent. Thereafter, a fiber tow that includes of a plurality of fibers is wound about the drum so that the fiber tow penetrates into the matrix material and the matrix material impregnates the fiber tow to form the prepreg tape.

A molding tool and method for making the molding tool by additive manufacturing is provided. The molding tool includes a tool body having a tooling surface for molding a part, the tool body comprising a eutectic alloy. The method for making the molding tool by additive manufacturing includes forming a first layer of eutectic alloy, the forming comprising depositing the eutectic alloy in liquid form and then cooling for form a solid eutectic alloy; forming an additional layer of the eutectic alloy on the first layer, the forming of the additional layer comprising depositing the eutectic alloy in liquid form and then cooling to form the solid eutectic alloy; and repeating forming an additional layer of the eutectic alloy on the first layer, the forming of the additional layer comprising depositing the eutectic alloy in liquid form and then cooling to form the solid eutectic alloy, and repeating one or more times to form a structure comprising a tool body having a tooling surface.

Provided is an apparatus for preparing an aerogel blanket, the apparatus comprising: a bobbin around which a blanket is wound; a body provided with a gelling tank in which the bobbin is accommodated; a driving member configured to allow the bobbin accommodated in the gelling tank to rotate; and a silica sol supply member configured to gelate the blanket as silica sol is injected into the gelling tank to impregnate the blanket rotating by the bobbin.

Provided is an apparatus for preparing an aerogel blanket, the apparatus comprising: a bobbin around which a blanket is wound; a body provided with a gelling tank in which the bobbin is accommodated; a driving member configured to allow the bobbin accommodated in the gelling tank to rotate; and a silica sol supply member configured to gelate the blanket as silica sol is injected into the gelling tank to impregnate the blanket rotating by the bobbin.

A method for constructing multiple ceramic layers by winding continuous ceramic filaments of identical composition to prepare multilayer RF-transparent structures is provided. In the method, identical continuous ceramic filaments are wound to construct a layer with specific dielectric constant according to patterns, characterized by the winding angle, winding density/inter-fiber aperture and winding count/layer thickness. Layers with same or different dielectric characteristics forms a sandwich design to fulfill the desired mechanical, thermal and electrical requirements.

A method for constructing multiple ceramic layers by winding continuous ceramic filaments of identical composition to prepare multilayer RF-transparent structures is provided. In the method, identical continuous ceramic filaments are wound to construct a layer with specific dielectric constant according to patterns, characterized by the winding angle, winding density/inter-fiber aperture and winding count/layer thickness. Layers with same or different dielectric characteristics forms a sandwich design to fulfill the desired mechanical, thermal and electrical requirements.

A molding tool and method for making the molding tool by additive manufacturing is provided. The molding tool includes a tool body having a tooling surface for molding a part, the tool body comprising a eutectic alloy. The method for making the molding tool by additive manufacturing includes forming a first layer of eutectic alloy, the forming comprising depositing the eutectic alloy in liquid form and then cooling for form a solid eutectic alloy; forming an additional layer of the eutectic alloy on the first layer, the forming of the additional layer comprising depositing the eutectic alloy in liquid form and then cooling to form the solid eutectic alloy; and repeating forming an additional layer of the eutectic alloy on the first layer, the forming of the additional layer comprising depositing the eutectic alloy in liquid form and then cooling to form the solid eutectic alloy, and repeating one or more times to form a structure comprising a tool body having a tooling surface.

Disclosed is a method for preparing graphite film, comprising steps as follows: 1) winding; 2) carbonizing at a low temperature; 3) graphitizing at a high temperature; 4) unwinding and feeding, winding up the electrographite film semi-finished product and flexible graphite paper separately; 5) calendaring to press the electrographite film semi-finished product against release film or protective film; 6) winding up and packaging. The winding process comprises steps as follows: a. winding high temperature resistant elastic material around the graphite cylinder core; b. bonding macromolecular film to flexible graphite paper, and then winding around the graphite cylinder core based on step a; c. when the macromolecular film and flexible graphite paper wound in step b reach the predetermined thickness, securing with carbon cord.

Disclosed is a method for preparing graphite film, comprising steps as follows: 1) winding; 2) carbonizing at a low temperature; 3) graphitizing at a high temperature; 4) unwinding and feeding, winding up the electrographite film semi-finished product and flexible graphite paper separately; 5) calendaring to press the electrographite film semi-finished product against release film or protective film; 6) winding up and packaging. The winding process comprises steps as follows: a. winding high temperature resistant elastic material around the graphite cylinder core; b. bonding macromolecular film to flexible graphite paper, and then winding around the graphite cylinder core based on step a; c. when the macromolecular film and flexible graphite paper wound in step b reach the predetermined thickness, securing with carbon cord.