WO2006003774A1 - 半導体用ヒートシンクに好適な炭素繊維強化炭素複合材料の製造方法 - Google Patents
半導体用ヒートシンクに好適な炭素繊維強化炭素複合材料の製造方法 Download PDFInfo
- Publication number
- WO2006003774A1 WO2006003774A1 PCT/JP2005/010195 JP2005010195W WO2006003774A1 WO 2006003774 A1 WO2006003774 A1 WO 2006003774A1 JP 2005010195 W JP2005010195 W JP 2005010195W WO 2006003774 A1 WO2006003774 A1 WO 2006003774A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carbon fiber
- carbon
- composite material
- unidirectional
- fiber reinforced
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/83—Carbon fibres in a carbon matrix
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3733—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon having a heterogeneous or anisotropic structure, e.g. powder or fibres in a matrix, wire mesh, porous structures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/526—Fibers characterised by the length of the fibers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5264—Fibers characterised by the diameter of the fibers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5268—Orientation of the fibers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5296—Constituents or additives characterised by their shapes with a defined aspect ratio, e.g. indicating sphericity
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5463—Particle size distributions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/604—Pressing at temperatures other than sintering temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
Definitions
- the present invention relates to a method for producing a unidirectional carbon fiber reinforced carbon composite material (hereinafter sometimes simply referred to as a unidirectional C / C composite material) suitable for a semiconductor heat sink.
- a unidirectional carbon fiber reinforced carbon composite material hereinafter sometimes simply referred to as a unidirectional C / C composite material
- a carbon fiber reinforced carbon composite material (hereinafter simply referred to as a C / C composite material) is a lightweight material with high thermal conductivity, heat resistance, and thermal shock resistance. It is useful for heat-resistant parts such as steel, nuclear reactor reactor wall materials, and brake materials under severe conditions such as aircraft and race cars.
- heat-resistant parts such as steel, nuclear reactor reactor wall materials, and brake materials under severe conditions such as aircraft and race cars.
- heat sink that efficiently dissipates heat generated from a semiconductor element in order to ensure the performance and life of the semiconductor element.
- the conventional cZc composite material is used in these applications, particularly as a heat sink for semiconductors, there are the following problems.
- the carbon fiber having high thermal conductivity is arranged in multiple directions, so the mechanical strength
- the thermal conductivity in the direction of heat flow between the heat source and the cooling source is still insufficient.
- a unidirectional C / C composite material having a structure in which carbon fibers are arranged in one direction has good thermal conductivity in the orientation direction of the carbon fibers, but the carbon fibers are oriented in a direction perpendicular to the carbon fiber.
- One of the most effective methods for producing a conventional unidirectional C / C composite material is a method using a thermosetting resin as a matrix precursor.
- a thermosetting resin as a matrix precursor.
- the carbonization yield of the resin used is as low as about 50%, voids are generated, and therefore the strength in the direction perpendicular to the orientation direction of the carbon fibers cannot be increased.
- the carbonaceous pitch is applied many times (usually 5 to 10 times) by a method called re-impregnation of the cracks and voids that have occurred.
- a method of reducing the defects by impregnation can be used, this takes a long time, and even if the defects are reduced, the strength cannot be sufficiently increased.
- the present invention does not require re-impregnation or the like of a unidirectional cZc composite material that does not contain voids and has a high strength and a high thermal conductivity in the direction perpendicular to the orientation direction of the carbon fiber and a high strength. It is an object to provide a method that can be manufactured in a short time.
- the unidirectional carbon fiber reinforced carbon composite material is characterized in that the impregnating liquid obtained is impregnated into carbon fibers, molded so that the carbon fibers are arranged in one direction, cured, and then fired. Production method.
- the fine carbon fiber is a phenol resin-coated fine carbon fiber having a surface coated with: 40 to 40 parts by weight of phenolic resin per 100 parts by weight of the fine carbon fiber.
- the above powder carbon is a carbon powder containing 30% by mass or more of low volatile pitch ( The manufacturing method of the unidirectional carbon fiber reinforced carbon composite material in any one of 1)-(4).
- thermosetting resin is phenol resin and Z or furan resin.
- a unidirectional C / C composite material that does not contain voids and has a high thermal conductivity in the direction perpendicular to the orientation direction of the carbon fiber and a high strength is re-impregnated.
- a method that can be manufactured in a short time without the need is provided.
- C composite material has a thermal conductivity of 20 WZm K or more, a thermal expansion coefficient of 15 X 10 _S Z ° C or less, an elastic modulus of 1 OGPa or more, and a tensile strength of 20 MPa or more in a direction perpendicular to the orientation direction of the carbon fiber.
- thermal conductivity 20 WZm K or more
- thermal expansion coefficient 15 X 10 _S Z ° C or less
- an elastic modulus of 1 OGPa or more an elastic modulus of 1 OGPa or more
- a tensile strength 20 MPa or more in a direction perpendicular to the orientation direction of the carbon fiber.
- it since it is excellent in high thermal conductivity, thermal shock resistance, high strength, and light weight, it is suitable as a so-called heat sink in a device on which a semiconductor element is mounted.
- the powdery carbon used for forming the impregnation liquid in the present invention is, for example, carbon powder obtained by heat-treating coatus, graphite, and low-volatile pitch or calcined coatus to a temperature higher than their production temperature. Can be used. As graphite, natural graphite from which ash has been removed can be used. Artificial graphite powder obtained by heating Coatus to a temperature of 2500 to 3000 ° C, for example, is preferred. The size of the carbon powder is preferably an average particle size of 30 x m or less.
- a low volatile pitch with a low volatile content is used as the powdery carbon. What contains 30 weight% or more is preferable. If the content of the low volatile pitch is less than 30% by weight, the density of the base material carbon, which has a low bondability and sinterability in the generated base material carbon, will deteriorate, and the quality of the carbon-carbon composite material will deteriorate. It becomes. From this point, it is more preferable that the low volatility pitch is contained in the carbon powder in an amount of 50% by weight or more, and more preferably 80% by weight or more.
- the low volatility pitch is obtained by heat treating heavy oil or pitch to, for example, 400 to 550 ° C., and includes petroleum, coal, and compound types.
- Volatiles are 5-20%. If the volatile content is less than 5%, the bondability with resin charcoal or other carbon powder in the carbonization process and the sinterability are low. . From the above properties, the volatile content is more preferably 7 to 15%.
- Low volatility pitches include those that exhibit self-sintering properties, commonly referred to as raw coatus. This includes, for example, about 10% volatile matter produced by heating petroleum heavy oil to a temperature of around 500 ° C by delayed coking. Here, the volatile matter means the weight reduction rate when the temperature is raised from 100 ° C. to 1000 ° C. at 20 ° C./min in an atmospheric pressure inert atmosphere.
- the fine carbon fiber used in the present invention has a fiber diameter of 0.5 to 500 nm, a fiber length of ⁇ or less, preferably an aspect ratio of 3 to 1000, preferably a carbon hexagonal network surface.
- a fine carbon fiber having a multi-layered structure in which cylindrical cylinders are concentrically arranged and whose central axis is a hollow structure is used.
- Such fine carbon fibers are greatly different from conventional carbon fibers having a fiber diameter of 5 to 15 zm obtained by heat-treating conventional fibers such as cocoons, pitches, celluloses, and rayons.
- the fine carbon fibers used in the present invention are greatly different from the conventional carbon fibers not only in fiber diameter but also in fiber length. As a result, it is extremely excellent in terms of physical properties such as conductivity, thermal conductivity, and slidability.
- the fiber diameter of the fine carbon fiber is smaller than 0.5 nm, the strength of the obtained composite material becomes insufficient, and if it is larger than 500 nm, the mechanical strength, thermal conductivity, sliding Sexuality etc. will decrease. Also, if the fiber length is longer than 1000 zm, the fine carbon fibers are difficult to disperse uniformly in the carbon matrix, resulting in a non-uniform material composition and a reduced mechanical strength of the resulting composite material. .
- the fine carbon fiber used in the present invention has a fiber diameter of 10 to 200 nm, a fiber length of 3 to 300 ⁇ m, and preferably an aspect ratio of 3 to 500 Is particularly preferred. In the present invention, the fiber diameter or fiber length of the fine carbon fiber can be measured with an electron microscope.
- a preferred fine carbon fiber used in the present invention is a carbon nanotube.
- These carbon nanotubes are also called graphite whiskers, filamentous carbon, carbon fibril, etc., and there are single-walled carbon nanotubes with a single graphite film forming the tube and multi-walled carbon nanotubes with multiple layers. Yes, any of them can be used in the present invention.
- multi-walled carbon nanotubes are preferable because they provide a high mechanical strength and are advantageous in terms of economy.
- Carbon nanotubes are produced, for example, by an arc discharge method, a laser evaporation method, a thermal decomposition method, or the like as described in "Basics of Carbon Nanotubes" (issued by Corona, pages 23 to 57, issued in 1998).
- the carbon nanotubes preferably have a fiber diameter of 0.5 to 500 nm, a fiber length of preferably 1 to 500 ⁇ m, and preferably an aspect ratio of 3 to 500.
- Particularly preferable fine carbon fiber in the present invention is a vapor grown carbon fiber having a relatively large fiber diameter and fiber length among the carbon nanotubes.
- a vapor grown carbon fiber is also called VGCF (Vapor Grown Carbon Fiber), and as described in the publication of Japanese Patent Laid-Open No. 2003-176327, the presence of an organic transition metal catalyst such as a hydrocarbon is used. It is produced by gas phase pyrolysis with hydrogen gas below.
- This vapor grown carbon fiber V
- GCF has a fiber diameter of preferably 50 to 300 nm, a fiber length of preferably 3 to 300 ⁇ m, and preferably an aspect ratio of 3 to 500. This VGCF is excellent in terms of manufacturability, handling and properties.
- the fine carbon fiber used in the present invention is preferably heat-treated in a non-oxidizing atmosphere at a temperature of 2300 ° C or higher, preferably 2500 to 3500 ° C.
- the mechanical strength and chemical stability are greatly improved, contributing to the light weight of the resulting composite material.
- argon, helium, and nitrogen gas are preferably used as the non-oxidizing atmosphere.
- the fine carbon fibers used in the present invention may be used as they are, but it is preferable to use fine carbon fibers having a surface coated with a phenol resin.
- Fine carbon fiber coated with strong resin When used, the unidirectional C / C composite material with uniform properties and excellent properties can be obtained.
- the amount of phenol resin coated on the surface of the fine carbon fiber is preferably 1 to 40 parts by weight, particularly preferably 5 to 25 parts by weight per 100 parts by weight of the fine carbon fiber.
- the fine carbon fiber coated with the phenol resin is produced by reacting phenols and aldehydes in the presence of a catalyst while being mixed with the fine carbon fiber.
- thermosetting resin used in the present invention a wide range of resins can be used, and it is particularly preferable to use a thermosetting resin having a high carbonization yield.
- a phenol resin, a furan resin or the like A mixture of There are two types of phenolic resins: a resol type obtained by the reaction of phenols and aldehydes in the presence of an alkali, and a novolac type obtained from phenols and aldehydes by an acidic catalyst. There is something.
- the novolak type is preferably a self-curing type containing a curing agent such as hexamethylenediamine.
- various phenolic resins can be mixed and used.
- furan resin a furan resin initial condensate can be used.
- This initial condensate includes those comprising furfuryl alcohol or a furfuryl alcohol / furfural mixture.
- phenol resin initial reaction product can be used as a mixture of pre-curing resin and furan resin initial reaction product.
- the initial reaction product means a liquid resin.
- the impregnating solution containing the above powdery carbon, fine carbon fiber, and thermosetting resin can be used even when all of these are dispersed in the medium, or a part of them, particularly the thermosetting resin. May be dissolved in the medium.
- the medium either an aqueous medium or an organic medium can be used.
- an organic solvent that dissolves the thermosetting resin is used.
- the organic solvent include alcohols such as ethanol and butanol, polar solvents such as acetone and THF, and organic solvents such as furfural, furfuryl alcohol, and mixtures thereof.
- organic solvents for example, many ordinary solid state phenol resins are softer at 60 to 95 ° C. than the curing temperature, so that the curing reaction does not proceed substantially and voids are generated. Depart It is possible to maintain the time necessary to sufficiently dry the organic solvent in the temperature range without being generated. These organic solvents also have the advantage that heating under reduced pressure or vacuum heating drying is easier to implement from the viewpoint of drying speed.
- the procedure for adding and mixing powdered carbon, fine carbon fiber, and thermosetting resin is not particularly limited, but an organic solvent that dissolves the thermosetting resin is used.
- a thermosetting resin is dissolved in an organic solvent, and then, powdered carbon and fine carbon fibers are dispersed in the obtained resin solution.
- a method for dispersing these materials in the medium an arbitrary method such as a method using a ball mill or ultrasonic waves can be used.
- thermosetting resin 10 to 50 parts by weight preferably 15 to 30 parts by weight
- powdered carbon 5 to 80 parts by weight preferably 10 to 70 parts by weight
- 5 to 50 parts by weight preferably 10 to 45 parts by weight
- the impregnating liquid usually has a slurry state, but it is allowed to impregnate the carbon fiber without excessively high viscosity.
- the carbon fiber impregnated with the above impregnation liquid may be any of PAN-based, pitch-based and other carbon fibers, but the diameter is preferably 5 to 20 xm, particularly preferably 7 to: Those having a thickness of 15 ⁇ m are preferred, and high-performance mesophase pitch carbon fibers having high thermal conductivity are particularly preferred. Of course, it may be a graphite fiber obtained by firing at a higher temperature.
- the impregnation of the impregnating liquid into the carbon fiber is usually performed at room temperature, but can be performed under heating within a temperature range where the resin curing reaction does not proceed substantially.
- the impregnation method can be made according to the shape of the carbon fiber. For example, in the case of continuous yarn, it can be impregnated by passing the yarn continuously in an impregnation solution and winding it on a drum or a frame. Impregnation can also be performed under reduced pressure.
- the carbon fiber is aligned in one direction and cut into a sheet before drying, and then dried. Drying is generally performed under heating, but may be performed under reduced pressure in order to shorten the drying time. It is desirable that the drying be performed within a range from the temperature at which the resin softens to the temperature at which the resin curing reaction does not substantially proceed. For example, 50 to: 100 ° C range It is. In the molding, the remaining solvent can be sufficiently removed by reducing the pressure at a temperature of 60 to 90 ° C. or in the vicinity thereof at the initial stage of the molding process.
- the carbon fiber content in the obtained matrix precursor-containing carbon fiber and the carbon fiber volume content (Vf) is 40% to 80% after firing. 50 to 75% is particularly preferable.
- the carbon fiber volume content is less than 40%, the thermal conductivity in the orientation direction of the carbon fiber of the obtained unidirectional C ZC composite is low, and the coefficient of thermal expansion in the direction perpendicular to the orientation direction of the carbon fiber is large.
- the carbon fiber volume content exceeds 80%, the amount of matrix is insufficient and the bending strength in the above-mentioned direction decreases, so that it is impossible to produce a unidirectional C / C composite material.
- the dried sheet-like matrix precursor-containing carbon fibers are laminated so that the carbon fibers are arranged in one direction, and then molded under a pressure of 5 to 25 MPa. Molding uses resin curing reaction.
- the molding temperature range is, for example, 80 to 200 ° C. for phenol resin, 70 to 160 ° C. for furan resin, and 70 to 200 ° C. for a mixture thereof. However, it is not limited to this range.
- the heating time is generally from 10 minutes to 10 hours or more. It is desirable to gradually raise the temperature step by step or continuously in this temperature range.
- the pressurization is usually performed in the range of 5 to 25 MPa, particularly preferably 10 to 20 MPa.
- the obtained molded body is calcined by firing at a temperature of 2,000 ° C or higher, preferably at a temperature of 2,500 ° C or higher, in an inert atmosphere, at atmospheric pressure or under pressure according to a known method, If necessary, it is further graphitized.
- the unidirectional CZC composite material obtained by the present invention has high thermal conductivity in the direction perpendicular to the axis of carbon fibers (90 °), low thermal expansion coefficient, and high strength.
- the heat transfer in a direction perpendicular to the orientation direction of the carbon fiber is Electric rate is higher 20WZmK, particularly 30WZmK above, the thermal expansion coefficient 15 X 10 / ° C or less, particularly 12 X 10- 6 / ° C or less, an elastic modulus higher log Pa, particularly not less than and tensile strength 15 GPa 20 MPa In particular, it has a characteristic of 25 MPa or more.
- the thermal conductivity is measured by the laser flash method, and the thermal expansion coefficient is JIS.
- the method conforming to C2141, and the modulus of elasticity and tensile strength are each determined by a method conforming to JIS R-1601.
- the powdery carbon used had an average particle size of 1.3 am, and a particle size distribution of 1 ⁇ m or less, 41% by weight, 1-211128% by weight, and 31% by weight or more.
- fine carbon fiber phenol resin-coated fine carbon fiber prepared as follows was used. The reaction vessel is charged with 20 parts by weight of bisphenol A (water solubility at room temperature 0.036), 365 parts by weight of phenol, 547 parts by weight of 37% by weight formalin, and 7.7 parts by weight of triethylenolamine. It is.
- thermosetting resin 20 parts of phenol resin (trade name LA-100P, manufactured by Lignite Co., Ltd.) was dissolved in 200 parts of ethanol. Kg and 0.3 kg of fine carbon fiber were kneaded, and 150 parts of ethanol was further added to adjust the viscosity to 50 poise.
- This impregnating solution is mixed with mesophase pitch high elasticity carbon fiber (10 xm diameter) continuous yarn is soaked, pulled up and aligned in one direction, air-dried for 12 hours, dried at 65 ° C for 1 hour under reduced pressure of about 10-orr to prepare a pre-preda sheet did.
- Example 1 Except that the firing temperature was changed from 3000 ° C to 2500 ° C in Example 1, it was carried out in the same manner as in Example 1 and the plate-shaped molded product having the same dimensions was subjected to the carbon fiber alignment direction and The thermal conductivity, thermal expansion coefficient, elastic modulus, and tensile strength in the direction perpendicular to the carbon fiber array were measured. The results are shown in Table 1.
- Example 1 Example 2 Fine carbon fiber Array direction Right angle direction Array direction Array direction Content (%)
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Ceramic Products (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006528441A JP3943123B2 (ja) | 2004-07-06 | 2005-06-02 | 半導体用ヒートシンクに好適な炭素繊維強化炭素複合材料の製造方法 |
US11/631,106 US20080057303A1 (en) | 2004-07-06 | 2005-06-02 | Method for Manufacturing Carbon Fiber Reinforced Carbon Composite Material Suitable for Semiconductor Heat Sink |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004199468 | 2004-07-06 | ||
JP2004-199468 | 2004-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003774A1 true WO2006003774A1 (ja) | 2006-01-12 |
Family
ID=35782587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/010195 WO2006003774A1 (ja) | 2004-07-06 | 2005-06-02 | 半導体用ヒートシンクに好適な炭素繊維強化炭素複合材料の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080057303A1 (ja) |
JP (1) | JP3943123B2 (ja) |
KR (1) | KR100850657B1 (ja) |
TW (1) | TW200606124A (ja) |
WO (1) | WO2006003774A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2113497A2 (en) | 2008-04-30 | 2009-11-04 | Ibiden Co., Ltd. | High purity carbon fiberreinforced carbon composite for semiconductor manufacturing apparatus and method for producing the same |
JP2010073842A (ja) * | 2008-09-18 | 2010-04-02 | Nitto Denko Corp | マイクロプロセッサ構造 |
JP2010073843A (ja) * | 2008-09-18 | 2010-04-02 | Nitto Denko Corp | マイクロプロセッサ構造 |
WO2018047828A1 (ja) * | 2016-09-12 | 2018-03-15 | デクセリアルズ株式会社 | 熱伝導シート、及び半導体装置 |
JP2021195269A (ja) * | 2020-06-10 | 2021-12-27 | 株式会社Cfcデザイン | 異方性不織布を使用した炭素/炭素複合材料 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110247958A1 (en) * | 2008-10-16 | 2011-10-13 | Composite Transport Technologies ,Inc. | Lightweight unit load device |
US8023267B2 (en) * | 2009-06-19 | 2011-09-20 | General Electric Company | Avionics chassis |
US7911796B2 (en) * | 2009-06-19 | 2011-03-22 | General Electric Company | Avionics chassis |
US8222541B2 (en) * | 2009-06-19 | 2012-07-17 | General Electric Company | Avionics chassis |
US8059409B2 (en) * | 2009-06-19 | 2011-11-15 | General Electric Company | Avionics chassis |
US20120077402A1 (en) * | 2010-03-25 | 2012-03-29 | Benteler Sgl Gmbh & Co. Kg | Semi-finished textile product, particularly prepreg, manufactured from non-woven fiber fabric |
JP2012036018A (ja) | 2010-08-04 | 2012-02-23 | Ibiden Co Ltd | 炭素繊維強化炭素複合材及びその製造方法 |
KR101564612B1 (ko) | 2014-04-01 | 2015-11-03 | 국립대학법인 울산과학기술대학교 산학협력단 | 열전 장치의 n-타입 소자에 사용되는 멀티 스케일 복합재 및 그의 제조방법 |
TWI582370B (zh) * | 2015-03-17 | 2017-05-11 | Method for Making High Thermal Conductivity Elements | |
US10433455B2 (en) * | 2016-03-30 | 2019-10-01 | Leviton Manufacturing Co., Inc. | Wiring device with heat removal system |
US10563023B2 (en) * | 2016-08-26 | 2020-02-18 | The Boeing Company | Carbon fiber composite, a medium incorporating the carbon fiber composite, and a related method |
US11796374B2 (en) * | 2020-04-17 | 2023-10-24 | Goodrich Corporation | Composite water tank level sensor |
KR102472723B1 (ko) * | 2021-04-29 | 2022-11-29 | 인하대학교 산학협력단 | 열전도성 고분자 복합체 및 이의 제조방법 |
CN116283326B (zh) * | 2023-02-22 | 2024-04-16 | 陕西天策新材料科技有限公司 | 一种碳纤维增强陶瓷封装石墨导热板及其制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003192439A (ja) * | 2001-12-26 | 2003-07-09 | Hitachi Chem Co Ltd | 中空状カーボンファイバーからなる多孔質炭素板とその製造方法 |
JP2005178151A (ja) * | 2003-12-18 | 2005-07-07 | Seiko Epson Corp | 焼結体の製造方法および焼結体 |
JP2005220210A (ja) * | 2004-02-05 | 2005-08-18 | Nok Corp | カーボンナノチューブの分散方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06321634A (ja) * | 1993-05-11 | 1994-11-22 | Hitachi Chem Co Ltd | 一方向強化c/c複合材及びその製造法 |
JP4663153B2 (ja) * | 2001-05-22 | 2011-03-30 | ポリマテック株式会社 | 熱伝導性複合材料組成物 |
JP4454353B2 (ja) * | 2003-05-09 | 2010-04-21 | 昭和電工株式会社 | 直線性微細炭素繊維及びそれを用いた樹脂複合体 |
JP3948000B2 (ja) * | 2003-08-26 | 2007-07-25 | 松下電器産業株式会社 | 高熱伝導性部材及びその製造方法ならびにそれを用いた放熱システム |
-
2005
- 2005-06-02 JP JP2006528441A patent/JP3943123B2/ja not_active Expired - Fee Related
- 2005-06-02 WO PCT/JP2005/010195 patent/WO2006003774A1/ja active Application Filing
- 2005-06-02 US US11/631,106 patent/US20080057303A1/en not_active Abandoned
- 2005-06-02 KR KR1020077002713A patent/KR100850657B1/ko not_active IP Right Cessation
- 2005-07-05 TW TW094122721A patent/TW200606124A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003192439A (ja) * | 2001-12-26 | 2003-07-09 | Hitachi Chem Co Ltd | 中空状カーボンファイバーからなる多孔質炭素板とその製造方法 |
JP2005178151A (ja) * | 2003-12-18 | 2005-07-07 | Seiko Epson Corp | 焼結体の製造方法および焼結体 |
JP2005220210A (ja) * | 2004-02-05 | 2005-08-18 | Nok Corp | カーボンナノチューブの分散方法 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2113497A2 (en) | 2008-04-30 | 2009-11-04 | Ibiden Co., Ltd. | High purity carbon fiberreinforced carbon composite for semiconductor manufacturing apparatus and method for producing the same |
JP2009269774A (ja) * | 2008-04-30 | 2009-11-19 | Ibiden Co Ltd | 高純度炭素繊維強化炭素複合材およびその製造方法 |
US7998584B2 (en) | 2008-04-30 | 2011-08-16 | Ibiden Co., Ltd. | High-purity carbon fiber-reinforced carbon composite and method for producing the same |
JP2010073842A (ja) * | 2008-09-18 | 2010-04-02 | Nitto Denko Corp | マイクロプロセッサ構造 |
JP2010073843A (ja) * | 2008-09-18 | 2010-04-02 | Nitto Denko Corp | マイクロプロセッサ構造 |
WO2018047828A1 (ja) * | 2016-09-12 | 2018-03-15 | デクセリアルズ株式会社 | 熱伝導シート、及び半導体装置 |
JP2021195269A (ja) * | 2020-06-10 | 2021-12-27 | 株式会社Cfcデザイン | 異方性不織布を使用した炭素/炭素複合材料 |
JP7153688B2 (ja) | 2020-06-10 | 2022-10-14 | 株式会社Cfcデザイン | 異方性不織布を使用した炭素/炭素複合材料 |
Also Published As
Publication number | Publication date |
---|---|
TW200606124A (en) | 2006-02-16 |
KR20070039938A (ko) | 2007-04-13 |
JPWO2006003774A1 (ja) | 2008-04-17 |
JP3943123B2 (ja) | 2007-07-11 |
US20080057303A1 (en) | 2008-03-06 |
KR100850657B1 (ko) | 2008-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3943123B2 (ja) | 半導体用ヒートシンクに好適な炭素繊維強化炭素複合材料の製造方法 | |
Ryu et al. | Direct insulation‐to‐conduction transformation of adhesive catecholamine for simultaneous increases of electrical conductivity and mechanical strength of CNT fibers | |
Zhou et al. | Mechanical and electrical properties of aligned carbon nanotube/carbon matrix composites | |
US5665464A (en) | Carbon fiber-reinforced carbon composite material and process for the preparation thereof | |
US20070066171A1 (en) | Impact resistant, thin ply composite structures and method of manufacturing same | |
JP4570553B2 (ja) | 複合材料 | |
CN108504096B (zh) | 一种碳纳米管/聚合物复合材料的制备方法 | |
Shaikh et al. | Progress in carbon fiber and its polypropylene-and polyethylene-based composites | |
JP2004315297A (ja) | ナノカーボンコンポジット材及びその製造方法 | |
US20070132126A1 (en) | Method for debundling and dispersing carbon fiber filaments uniformly throughout carbon composite compacts before densification | |
US20100055465A1 (en) | Carbon-carbon composites for use in thermal management applications | |
Sharma et al. | Advanced Carbon–Carbon Composites: Processing Properties and Applications | |
JPH03150266A (ja) | 炭素/炭素複合材料の製造方法 | |
JP2011046543A (ja) | 炭素繊維強化炭素複合材料及びその製造方法 | |
Vu et al. | Effect of carbon nanotubes on the microstructure and thermal property of phenolic/graphite composite | |
JPH0816032B2 (ja) | 高強度炭素炭素複合材の製造方法 | |
JP2020070197A (ja) | 炭素複合材料の製造方法、組成物、放熱用部品、導電性部品、及び移動体部品 | |
Jain et al. | Processing and characterization of carbon-carbon nanofiber composites | |
JPH0532457A (ja) | 炭素繊維強化炭素複合材料及びその製造方法 | |
JP2001181062A (ja) | 樹脂含浸炭素繊維強化炭素複合材とその製造方法 | |
JPH0551257A (ja) | 炭素繊維強化炭素材料の製造法 | |
Ko et al. | Modification of a carbon/carbon composite with a thermosetting resin precursor as a matrix by the addition of carbon black | |
JPH06263558A (ja) | 多孔質炭素板の製法および多孔質炭素電極材 | |
JPH03247563A (ja) | 炭素繊維強化炭素材料の製造方法 | |
JPH04284363A (ja) | 炭素板の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006528441 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11631106 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077002713 Country of ref document: KR |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 11631106 Country of ref document: US |