# US 9,039,955 B2 · Powder material impregnation method and method for producing fiber-reinforced composite material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,955 B2 - Document ID: US9039955B2 - Status: Granted - Kind: B2 - Application number: 13/636,735 - Filed: 2011-03-29 - Published: 2013-01-10 - Granted: 2015-05-26 - Earliest claimed: 2010-03-29 - Assignees: IHI Corporation - Applicants: Hiroshige Murata; Yasutomo Tanaka; Yuuki Nonaka; Takeshi Nakamura - Inventors: Hiroshige Murata; Yasutomo Tanaka; Yuuki Nonaka; Takeshi Nakamura - Web page: https://patentgrep.com/patent/US9039955B2 ## CPC - B28B 19/00: Machines or methods for applying the material to surfaces to form a permanent layer thereon (making shaped articles on mandrels B28B1/30; applying liquids or other fluent materials to surfaces in general B05C; glazing or engobing C04B) - C04B 35/571: obtained from {Si-containing} polymer precursors {or organosilicon monomers} - C04B 35/573: obtained by reaction sintering {or recrystallisation} - C04B 35/62868: {Boron nitride} - C04B 35/62873: {Carbon} - C04B 35/62884: {by gas phase techniques} - C04B 35/80: Fibres, filaments, whiskers, platelets, or the like - D06M 23/08: Processes in which the treating agent is applied in powder or granular form (adhesives for multi-layer textile fabrics D06M17/00) - C04B 2235/422: Carbon - C04B 2235/428: Silicon - C04B 2235/5244: Silicon carbide - C04B 2235/5252: having a specific pre-form - C04B 2235/5256: Two-dimensional, e.g. woven structures - C04B 2235/614: Gas infiltration of green bodies or pre-forms - C04B 2235/616: Liquid infiltration of green bodies or pre-forms - B28B: SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B) - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS ## Abstract When a molded fabric body (X) is impregnated with a powder (K) of a predetermined material, there are performed a first step of dispersing the powder (K) in a liquid to prepare a slurry, and a second step of burying the molded fabric body (X) made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator (M). Furthermore, in the second step, the vibrator (M) is moved along a surface of the molded fabric body (X). As a result, it is possible to improve the rate of impregnation of the powder (K) more than that in the conventional cases, irrespective of the shape of the molded fabric body (X). ## Claims ### Claim 1 A powder material impregnation method comprising: a first step of dispersing a powder of a predetermined material in a liquid to prepare a slurry; and a second step of burying a molded fabric body made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator, wherein, in the second step, the vibrator is moved along a whole surface of the molded fabric body. ### Claim 2 (depends on 1) The powder material impregnation method according to claim 1, wherein: the predetermined material comprises carbon (C) and silicon (Si); and the fiber bundle is made of a silicon carbide (SiC). ### Claim 3 (depends on 1) A method for producing a fiber-reinforced composite material, comprising: a molded body producing step of producing a predetermined-shaped molded fabric body from a fabric fragment that is woven from fiber bundles; a first impregnation step of impregnating the molded fabric body with a predetermined material by subjecting the molded fabric body to a vapor phase treatment; a second impregnation step of impregnating the molded fabric body with a predetermined material by the powder material impregnation method according to claim 1; and a reaction burning step of subjecting the molded fabric body obtained through the second impregnation step to a reaction burning treatment. ### Claim 4 (depends on 3) The method for producing a fiber-reinforced composite material according to claim 3, further comprising: a closely-packing step of impregnating the burned body with a material of a same type as the powder by a PIP (Polymer Impregnation and Pyrolysis) method, to thereby make the burned body more closely-packed. ### Claim 5 A powder material impregnation method comprising: a first step of dispersing a powder of a predetermined material in a liquid to prepare a slurry; and a second step of burying a molded fabric body made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator, wherein, in the second step, the slurry and the molded fabric body are fitted into a container having an inner shape corresponding to an outer shape of the molded fabric body, and the vibrator is arranged on a surface of the container to vibrate the slurry. ### Claim 6 (depends on 5) The powder material impregnation method according to claim 5, wherein: the predetermined material comprises carbon (C) and silicon (Si); and the fiber bundle is made of a silicon carbide (SiC). ### Claim 7 (depends on 5) A method for producing a fiber-reinforced composite material, comprising: a molded body producing step of producing a predetermined-shaped molded fabric body from a fabric fragment that is woven from fiber bundles; a first impregnation step of impregnating the molded fabric body with a predetermined material by subjecting the molded fabric body to a vapor phase treatment; a second impregnation step of impregnating the molded fabric body with a predetermined material by the powder material impregnation method according to claim 5; and a reaction burning step of subjecting the molded fabric body obtained through the second impregnation step to a reaction burning treatment. ### Claim 8 (depends on 7) The method for producing a fiber-reinforced composite material according to claim 7, further comprising: a closely-packing step of impregnating the burned body with a material of a same type as the powder by a PIP (Polymer Impregnation and Pyrolysis) method, to thereby make the burned body more closely-packed. ### Claim 9 (depends on 5) The powder material impregnation method according to claim 5, wherein the inner shape of the container corresponds to the entire outer shape of the molded fabric body to enclose the molded fabric body on all sides. ### Claim 10 A powder material impregnation method comprising: a first step of dispersing a powder of a predetermined material in a liquid to prepare a slurry; and a second step of burying a molded fabric body made of fiber bundles in the slurry and vibrating the slurry by use of a predetermined vibrator, wherein, in the second step, a vibration transmission member for transmitting a vibration generated by the vibrator is arranged to enclose all sides of the molded fabric body around the molded fabric body. ### Claim 11 (depends on 10) The powder material impregnation method according to claim 10, wherein the vibration transmission member comprises a plurality of solid or hollow metal materials that stand around the molded fabric body. ### Claim 12 (depends on 10) The powder material impregnation method according to claim 10, wherein: the predetermined material comprises carbon (C) and silicon (Si); and the fiber bundle is made of a silicon carbide (SiC). ### Claim 13 (depends on 10) A method for producing a fiber-reinforced composite material, comprising: a molded body producing step of producing a predetermined-shaped molded fabric body from a fabric fragment that is woven from fiber bundles; a first impregnation step of impregnating the molded fabric body with a predetermined material by subjecting the molded fabric body to a vapor phase treatment; a second impregnation step of impregnating the molded fabric body with a predetermined material by the powder material impregnation method according to claim 10; and a reaction burning step of subjecting the molded fabric body obtained through the second impregnation step to a reaction burning treatment. ### Claim 14 (depends on 13) The method for producing a fiber-reinforced composite material according to claim 13, further comprising: a closely-packing step of impregnating the burned body with a material of a same type as the powder by a PIP (Polymer Impregnation and Pyrolysis) method, to thereby make the burned body more closely-packed.