WO2006090643A1 - ハイブリッド炭素繊維紡績糸及びそれを用いたハイブリッド炭素繊維紡績糸織物 - Google Patents
ハイブリッド炭素繊維紡績糸及びそれを用いたハイブリッド炭素繊維紡績糸織物 Download PDFInfo
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- WO2006090643A1 WO2006090643A1 PCT/JP2006/302822 JP2006302822W WO2006090643A1 WO 2006090643 A1 WO2006090643 A1 WO 2006090643A1 JP 2006302822 W JP2006302822 W JP 2006302822W WO 2006090643 A1 WO2006090643 A1 WO 2006090643A1
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- carbon fiber
- spun yarn
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/16—Yarns or threads made from mineral substances
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/275—Carbon fibres
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/41—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/573—Tensile strength
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0234—Carbonaceous material
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
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- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
- Y10T428/2925—Helical or coiled
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- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
Definitions
- the present invention relates to a hybrid carbon fiber spun yarn useful for a gas diffuser (current collector) for a solid polymer electrolyte fuel cell and a hybrid carbon fiber spun yarn fabric using the same. .
- carbon fibers include so-called PAN-based carbon fibers made from polyacrylonitrile (PAN), so-called rayon-based carbon fibers made from rayon, and so-called pitch-based carbon fibers made from pitches.
- PAN polyacrylonitrile
- anisotropic carbon fibers and isotropic carbon fibers are manufactured as pitch-based carbon fibers.
- pitch-based isotropic carbon fibers are light in weight, chemical resistance, heat resistance, slidability and conductivity because the raw materials are inexpensive and relatively inexpensive, and the manufacturing method is advantageous for mass production. Widely used in applications that require characteristics such as stability.
- Carbon fibers are used in many forms such as filaments, slivers (fiber bundles), spun yarns, woven fabrics, chops, mills, mats, and pre-predas, and the firing temperature and the degree of carbonization vary depending on the application. .
- carbon fiber spun yarns and carbon fiber fabrics are used as constituent materials for heat insulating materials, sliding materials, conductive materials, etc., especially for electronic materials such as gas diffusers for solid polymer electrolyte fuel cells. Is being used.
- high conductivity can be obtained by heat-treating them at a high temperature of 900 ° C or higher to increase the degree of carbonization.
- a carbon fiber fabric When used as a gas diffuser for a solid polymer electrolyte fuel cell, its gas permeability is determined by its aperture ratio (porosity).
- the contact with the catalyst layer becomes poor, causing a problem in current collection.
- a filament woven fabric with single yarns has a problem that the aperture ratio (porosity) is small and the gas permeability is low. Therefore, as such a carbon fiber woven fabric, a spun yarn woven fabric is preferable to a filament woven fabric, which is easy to obtain a high density of single yarns.
- it is necessary to appropriately control the thickness of the carbon fiber fabric used as the gas diffuser in consideration of the diffusion of the reaction gas into the catalyst layer.
- a spun yarn fabric having an appropriate thickness and a thermal history of 900 ° C or higher is preferred.
- PAN flame-resistant fiber spun yarn and pitch-based spun yarn are known.
- PAN flame spun yarn spun yarn is heat treated at 900 ° C.
- the strength is extremely lowered and it is difficult to weave. Therefore, if we do not use the method of heat-treating at 900 ° C after weaving the flameproof fiber, we cannot obtain the desired fabric.
- the strength of the woven fabric obtained is lowered because the fiber is strained by heat treatment and the strength of the spun yarn is reduced by heat treatment.
- carbon fibers having a long fiber length such as carbon fibers of PAN-based continuous long fibers are used, there is a problem that the adhesion between the obtained spun yarn and the matrix material is deteriorated.
- JP-A-2002-352807 a porous fluorocarbon base material in which carbon fibers having a fiber length of 25 to 80 mm are aggregated in a state of having voids is used. And a gas diffuser characterized in that the granular fluororesin binds the carbon fibers as a binder.
- Japanese Laid-Open Patent Publication No. 2003-288906 discloses a gas diffuser characterized by having a carbon layer containing a car pump rack and a fluororesin on at least one surface of a carbon fiber fabric for electrodes.
- JP-A-53-81735 a carbon fiber spun yarn having improved strength by spinning a sliver-like carbon fiber having a fiber length of 25 mm or more, preferably 50 to 75 mm. It has been proposed to obtain. However, even the carbon fiber spun yarn obtained in this way has a tensile strength of about 0.08 to 0.09 N / tex, which is not yet sufficient.
- the present invention has been made in view of the above-described problems of the prior art, achieves a high tensile strength without causing deterioration in adhesion to a matrix material such as a polymer material, and has a uniform fineness.
- An object of the present invention is to provide a carbon fiber spun yarn having excellent properties, and a carbon fiber spun yarn fabric having excellent adhesion to a matrix material, mechanical strength, and excellent thickness uniformity.
- the present inventors have determined that a core portion mainly composed of a long carbon fiber having a fiber length of 500 mm or more is a short fiber having a fiber length of less than 500 mm.
- the present inventors have found that a hybrid carbon fiber spun yarn that can achieve the above-mentioned purpose can be obtained by covering with an outer peripheral portion mainly composed of long carbon fibers, and the present invention has been completed.
- the hybrid carbon fiber spun yarn of the present invention includes a hybrid carbon fiber spun yarn comprising a core part mainly composed of carbon fiber and an outer peripheral part mainly composed of carbon fiber and covering the outer peripheral surface of the core part.
- 20% by mass or more of the fibers constituting the core part is a long fiber long carbon fiber having a fiber length of 500 mm or more, and 80% by mass or more of the fibers constituting the outer peripheral part is a short fiber having a fiber length of less than 500 mm
- It is a long carbon fiber, and the mass ratio of the long fiber long carbon fiber and the short fiber long carbon fiber (long fiber long carbon fiber: short fiber long carbon fiber) is 20: 80-8 0:20.
- the hybrid carbon fiber spun yarn fabric of the present invention contains 30% by mass or more of the hybrid carbon fiber spun yarn of the present invention.
- the long fiber long carbon fiber is
- the short carbon fiber is a pitch-based isotropic carbon fiber and a Z- or polyacrylonitrile-based carbon fiber.
- the long fiber long carbon fiber is a polyacrylonitrile-based carbon fiber
- the short fiber long carbon fiber is a pitch-based isotropic carbon fiber. Is preferred.
- the ratio of carbon fibers having a fiber length of 150 mm or more and less than 500 mm in the short fiber length carbon fiber is 3 to 3.
- it is 0% by mass.
- the outer peripheral portion is composed of a twisted yarn mainly composed of the short fiber long carbon fiber, and the twisted yarn comprises the long fiber long carbon fiber. It is preferable that the outer peripheral surface of the core portion is covered with the twisted yarn by being twisted together with the core portion as a main component.
- the number of twists in the hybrid carbon fiber spun yarn is 50 to 400 times / m
- the density of the long fiber long carbon fiber is 1.7 to 2.3 g / cm 3 and the density of the short fiber long carbon fiber is 1.5 to 1.8 gZcm 3 .
- the hybrid carbon fiber spun yarn of the present invention achieves a high tensile strength without causing a decrease in adhesion to a matrix material such as a polymer material, and also has excellent uniformity in fineness. The reason for this is not necessarily clear, but the present inventors suggest the following. Sympathize.
- the hybrid carbon fiber spun yarn of the present invention a high tensile strength is achieved because the core portion is composed mainly of long fiber long carbon fibers having high tensile strength.
- the spun yarn is a long yarn bundle in which short fibers are joined together by twisting short fibers and intertwining short single fibers. Therefore, the tensile strength is maintained by the frictional force due to the entanglement (contact) between the single fibers, and the greater the entanglement, the more the contact area between the fibers increases, the friction increases, and the strength increases. It will be. Furthermore, the stronger the twist, the stronger the fibers are pressed against each other, increasing the frictional force and improving the tensile strength of the spun yarn.
- the core portion is composed mainly of long fiber long carbon fibers having a fiber length of 500 mm or more, and the outer peripheral portion is a short fiber long carbon fiber having a fiber length of less than 500 mm.
- the present inventors speculate that high tensile strength is achieved as described above because of the coating structure.
- the core portion is composed of long-fiber long carbon fibers that are inferior in adhesion to the matrix material, but the outer peripheral surface is short with a lot of surface fluff. Since the fiber is covered with long carbon fibers, the present inventors believe that the adhesion to the matrix material is maintained sufficiently high due to the anchor effect of the surface fluff of the carbon fibers constituting the outer peripheral portion. I guess.
- the core portion is constituted by long carbon long carbon fibers with little variation in fineness and strong tensile strength, and the core portion constitutes the outer peripheral portion. Therefore, the tensile strength is higher than that of the spun yarn formed using only the short-fiber long carbon fiber.
- the present inventors have found that the fiber length of the carbon fiber constituting the outer peripheral portion can be shortened, and as a result, so-called slabs and fly-like lumps are sufficiently prevented as hybrid spun yarns. I guess.
- the hybrid carbon fiber spun yarn fabric of the present invention is thus hybrid charcoal that has excellent adhesion to the matrix material, high tensile strength, and excellent uniformity of fineness. Since it is obtained by using a fiber spun yarn, it has excellent adhesion to the matrix material and mechanical strength, as well as excellent strength and thickness uniformity.
- the hybrid carbon fiber spun yarn fabric of the present invention has an appropriate opening ratio of the fabric in which the hybrid carbon fiber spun yarns constituting the hybrid carbon fiber spun yarn are not in close contact with each other due to the surface fluff at the outer periphery. The present inventors infer that the gas permeability is excellent because (porosity) is maintained.
- a carbon fiber spun yarn that achieves a high tensile strength without causing a decrease in adhesion to a matrix material such as a polymer material, and is excellent in the strength and fineness uniformity
- a carbon fiber spun yarn fabric that is excellent in adhesion to a matrix material and mechanical strength, and has excellent strength and uniformity in thickness.
- Fig. 1 is a configuration diagram showing a carding machine suitable for use in a carding process of a process for obtaining a short-fiber-long carbon fiber bundle that is effective in the present invention.
- FIG. 2 is a block diagram showing a drawing machine suitable for use in the drawing process of the process of obtaining the short fiber long carbon fiber bundle according to the present invention.
- FIG. 3 is a block diagram showing a spinning machine suitable for producing the hybrid carbon fiber spun yarn of the present invention.
- FIG. 4 is a configuration diagram showing a twisting machine suitable for producing a crushed yarn of a hybrid carbon fiber spun yarn of the present invention.
- hybrid carbon fiber spun yarn of the present invention and the hybrid carbon fiber spun yarn fabric of the present invention will be described in detail according to preferred embodiments thereof.
- the hybrid carbon fiber spun yarn of the present invention includes a hybrid carbon fiber spun yarn comprising a core part mainly composed of carbon fiber and an outer peripheral part mainly composed of carbon fiber and covering the outer peripheral surface of the core part.
- 20% by mass or more of the fibers constituting the core part is a long fiber long carbon fiber having a fiber length of 500 mm or more, and 80% by mass or more of the fibers constituting the outer peripheral part is a short fiber having a fiber length of less than 500 mm It is a long carbon fiber, and the mass ratio (long fiber long carbon fiber: short fiber long carbon fiber) of the long fiber long carbon fiber and the short fiber long carbon fiber is 20: 80 to 8 0:20.
- the fiber constituting the core of the hybrid carbon fiber spun yarn of the present invention has a fiber length of 500 mm or more (preferably 50 mass% or more, particularly preferably 80 mass% or more) (preferably 50 mass% or more). Is a long carbon fiber having a length of 1000 mm or more, particularly preferably 3 m or more. When the content ratio of the long carbon fibers in the fibers constituting the core is less than 20% by mass, the tensile strength of the obtained hybrid carbon fiber spun yarn is lowered.
- Examples of the long fiber and the long carbon fiber according to the present invention include pitch-based anisotropic carbon fiber, polyacrylonitrile-based carbon fiber (PAN-based carbon fiber), rayon-based carbon fiber, and the like.
- PAN-based carbon fiber polyacrylonitrile-based carbon fiber
- rayon-based carbon fiber rayon-based carbon fiber
- the use of polyacrylonitrile-based carbon fibers (PAN-based carbon fibers) is relatively inexpensive and improves the tensile strength and fineness uniformity of the hybrid carbon fiber spun yarn. This is preferable from the viewpoint of improving the tensile strength and thickness uniformity of the hybrid carbon fiber spun yarn fabric.
- the average diameter of the long fiber long carbon fiber according to the present invention is not particularly limited, but it is preferable to use a fiber having a diameter of about 5 to 15 ⁇ .
- the average diameter of the long fiber long carbon fiber is preferably fine, but if it is less than the above lower limit, productivity is lowered in production, which is not preferable. On the other hand, if the above upper limit is exceeded, the tensile strength decreases or the yarn is likely to break when twisted, which is preferable.
- the core of the hybrid carbon fiber spun yarn of the present invention is such that the long fiber long carbon fiber accounts for 20% by mass or more, but as a component other than the long fiber long carbon fiber, the fiber length is less than 500 mm.
- Such short fibers and long carbon fibers, and synthetic resin fibers such as polyamide fibers, polyester fibers, acrylic fibers, and polyethylene terephthalate fibers may be included.
- the long fiber long carbon fiber constituting the core of the hybrid carbon fiber spun yarn of the present invention may be a twisted yarn, but may be a fiber bundle that is not twisted.
- the long-fiber and long-carbon fiber which is effective in the present invention has a density of 1.7 to 2.3 g / cm 3 , preferably 1.7 to 2.0 g / cm 3 , particularly preferably 1. . 7: are those of 1. 9g / cm 3. If the density of the long carbon fiber is less than 1.7 g / cm 3 , carbonization is insufficient and the strength of the carbon fiber tends to decrease.On the other hand, if the above upper limit is exceeded, crystallization proceeds excessively and the strength of the carbon fiber tends to decrease. Tend to decrease.
- the method for producing such a long fiber long carbon fiber according to the present invention is particularly limited.
- Examples include carbonization of acrylic fiber (PAN fiber) and rayon fiber, and method of making Mesofz pitch as carbon fiber, such as Besfite manufactured by Toho Tenax Co., Ltd. Use long carbon fiber.
- the degree of carbonization that is preferably carbonized before spinning is adjusted. Therefore, it is more preferable that an additional heat treatment is performed.
- the heat treatment temperature for carbonization is preferably about 800 to 3000 ° C.
- the heat treatment temperature for adjusting the carbonization degree is generally about 900 to 2000 ° C. Is preferred.
- the proportion of carbon fibers having a fiber length of less than 500 mm is 80 mass% or more, and the proportion of carbon fibers having a length of 300 mm or less is 80 mass%. It is more preferable that the ratio of carbon fibers of 200 mm or less is 80% by mass or more. When the content ratio of the short fibers and long carbon fibers in the fibers constituting the outer peripheral portion is less than 80% by mass, the adhesion of the obtained hybrid carbon fiber spun yarn to the matrix material is lowered.
- the ratio of the carbon fiber having a fiber length of 150 mm or more and less than 500 mm is preferably 3 to 30% by mass. More preferably, the amount is%. If the proportion of this carbon fiber is less than the above lower limit, the tensile strength of the resulting hybrid carbon fiber spun yarn tends to decrease. On the other hand, when the proportion of the carbon fiber exceeds the above upper limit, when a spun yarn is produced from the fiber bundle, several fiber bundles are stretched several times with a drawing machine (by passing between rollers having different rotation speeds).
- the fiber length is longer than the gap between the rollers, and thread breakage is likely to occur, resulting in variations in fineness. Lumps called slabs and flies tend to occur.
- the carbon fiber having a fiber length of less than 150mm is a force that is formed by appropriately cutting the carbon fiber in the raw material in the treatment process by a carding machine and a drawing machine. It is preferable that the short fiber length carbon fiber which is useful in the present invention is contained in an appropriate distribution of 97 to 70% by mass. When spinning only carbon fibers with a fiber length of 150 mm or more, the resulting hybrid Uneven thickness of the carbon fiber spun yarn occurs, and as a result, uneven thickness of the fabric tends to occur.
- examples of the short and long carbon fibers that are useful in the present invention include pitch-based isotropic carbon fibers and polyacrylonitrile-based carbon fibers (PAN-based carbon fibers).
- PAN-based carbon fibers polyacrylonitrile-based carbon fibers
- the use of pitch-based isotropic carbon fibers is preferable from the viewpoint of improving adhesion with the matrix material.
- the average diameter of the short fiber long carbon fiber according to the present invention is not particularly limited, but it is preferable to use one having a length of about 5 to 20 ⁇ m. If the average diameter of the short fiber long carbon fiber is less than the above lower limit, the tensile strength of the fiber becomes weak and handling becomes difficult, and dust tends to increase.On the other hand, if the upper limit is exceeded, the number of carbon fibers rapidly increases. It tends to decrease.
- the short fiber long carbon fiber accounts for 80% by mass or more.
- a fiber length of 500 mm or more is used.
- Synthetic resin fibers such as long fibers, long carbon fibers, polyamide fibers, polyester fibers, attalinole fibers, and polyethylene terephthalate fibers may be included.
- the short carbon long carbon fiber constituting the outer peripheral portion of the hybrid carbon fiber spun yarn of the present invention is preferably 20% by mass or more, preferably 40% by mass or more, more preferably a twisted yarn. More preferably, the outer periphery is composed of 80% by mass or more of twisted yarn.
- the short carbon long carbon fiber according to the present invention has a density of 1.5 to: 1.8 g / cm 3 , preferably 1 ⁇ 5 to:! ⁇ 7 g / cm 3 , particularly preferably 1 - 55: are those of 1. 7g / cm 3. If the density of the short fiber and the long carbon fiber is less than the above lower limit, the carbonization tends to be insufficient and the tensile strength tends to decrease. On the other hand, if the density exceeds the upper limit, the wettability with the resin tends to deteriorate.
- the method for producing such a short fiber long carbon fiber according to the present invention is not particularly limited.
- the above-mentioned long fiber long carbon fiber can be cut into short pieces and used in an appropriate length.
- a short carbon long carbon fiber having a fiber it may be used as it is, or may be used after appropriately controlling the fiber length by a cutter.
- a spinning method of pitch-based short fibers and long carbon fibers there are a centrifugal method in which a molten pitch is extracted from a nozzle using a centrifugal force, and a melt process in which the molten pitch is blown out together with high-temperature and high-speed air.
- One method is the vortex method in which high-temperature and high-speed air is melt-blown and stretched by the swirling flow, and the air sucker method in which fibers are sucked and stretched by an air soccer nozzle and collected after the outlet.
- short fiber long carbon fiber bundles and carbon fiber mats obtained by any of these methods can be used.
- the following method is preferably employed. That is, first, carbon fibers to be used as short carbon long carbon fibers are appropriately cut by a cutting machine, and then the fibers are aligned by a scoring machine configured as shown in FIG. 1 to obtain a carbon fiber bundle.
- a scoring machine configured as shown in FIG. 1 to obtain a carbon fiber bundle.
- carbon fiber mat 1 is introduced from back roller 2 and sprayed with oil agent 3, fibers are aligned by fora 4, and from back roller 2.
- the fibers are drawn by the peripheral speed ratio between the front roller 5 and the back roller 2 that rotate at a high peripheral speed.
- the sliver-like carbon fiber bundle 7 is scraped off by the coiler 8.
- a carbon fiber bundle having a configuration as shown in Fig. 2 is used to combine several carbon fiber bundles (doubling), and draw (draft) several times as a single carbon fiber bundle.
- the parallelism of the fibers is further improved and the fibers are further thinned.
- a plurality of carbon fiber bundles drawn from the product case 11 are joined together by the creel stand 12, passed through the creel guide 13 and the sliver guide 14, and then to the back roller 15. Led.
- the carbon fiber bundle is sent to the middle roller 16, the fibers are aligned by the fora 17, and passed between the front roller 18, the nip roller 19 and the top roller 20.
- the carbon fiber bundle drawn during this time passes through a sliver guide 21 and is stored in a product case 23 via a roll 22. In addition, you may be allowed to go through this drawing process several times.
- heat treatment is performed in a state before the spun yarn is formed.
- Such heat treatment temperature is preferably about 700 to 3000 ° C, and more preferably about 800 to 1500 ° C.
- the hybrid carbon fiber spun yarn of the present invention includes a core part mainly composed of the above-mentioned long fiber long carbon fiber and an outer peripheral part mainly composed of the above-mentioned short fiber long carbon fiber, Outside A peripheral part covers the outer peripheral surface of the core part.
- the mass ratio of the long fiber long carbon fiber to the short fiber long carbon fiber is 20 : 80-80: 20 is preferable, and 30: 70-70: 30 is preferable.
- the content ratio of the long fiber long carbon fibers is less than the lower limit, the tensile strength of the obtained hybrid carbon fiber spun yarn is lowered, and on the other hand, when the content ratio of the short fiber long carbon fibers is less than the lower limit, it is obtained. Adhesion between the hybrid carbon fiber spun yarn and the matrix material is reduced.
- the specific configuration is not particularly limited as long as the outer peripheral surface of the core portion is covered by the outer peripheral portion, but the outer peripheral portion is not short.
- the yarn is composed of a twisted yarn mainly composed of long carbon fibers, and the twisted yarn is twisted together with the core portion mainly composed of the long fiber long carbon fibers so that the outer peripheral surface of the core portion is covered with the twisted yarn. It ’s good to be.
- the thickness of the hybrid carbon fiber spun yarn of the present invention is not particularly limited, but is a unit of tex indicating a mass (g) per 1000 m, and is preferably about 30 to 500 tex. : About 150 tex is more preferable 30-:! OOtex is even more preferable about 30 to 80 tex is particularly preferable.
- a thin woven fabric tends not to be obtained.
- a suitable strength for weaving cannot be obtained, and further obtained.
- the gas permeability of the resulting fabric tends to decrease.
- the force and the number of twists are preferably 50 to 400 times Zm, preferably 100 to 200 times. More preferably, it is / m. If the number of twists exceeds the upper limit, the fiber tends to be broken. On the other hand, if the number of twists is less than the lower limit, the tensile strength of the obtained hybrid carbon fiber spun yarn tends to decrease.
- Two or more hybrid carbon fiber spun yarns of the present invention may be combined and combined with a twisting machine. In such a case, for example, in the case of two, it is preferable to apply a reverse rotation twist of 60% ⁇ 5% as the secondary twist with respect to the primary twist. Also, in the case of three, against the primary twist As the secondary twist, it is preferable to apply a reverse rotation twist of 55% ⁇ 5%.
- the hybrid carbon fiber spun yarn of the present invention can have a high level of tensile strength of 0.35 N / tex or more as a result of the above configuration, and more preferably 0.440 NZtex. It is possible to have a very high level of tensile strength as described above.
- the method for producing the hybrid carbon fiber spun yarn of the present invention is not particularly limited.
- the following method is preferably employed. That is, in a spinning machine configured as shown in FIG. 3, when the carbon fiber bundle of the short fiber long carbon fiber is further drawn and twisted, the long fiber carbon fiber used as the long fiber long carbon fiber is used. The bundle is fed from the middle roller and blended.
- the spinning machine shown in FIG. 3 first, the short fiber length carbon fiber bundle 32 is guided from the product case 31 through the krill stand roller 33 to the back roller 34, while the long fiber length is longer than the carbon fiber bobbin 35.
- a carbon fiber bundle 36 is fed from the middle roller 37.
- the short fiber long carbon fiber bundle 32 is stretched by the peripheral speed ratio between the front roller 40 and the back roller 34 while being fed between the Eplon 38, the bottom 39 and the front roller 40, and the long fiber Combined with long carbon fiber bundle.
- the fibers are twisted together by a spindle 44 having a ring 42 and a brake pedal 43 through a combined fiber bundle force S snell guide 41 and wound up by a winding bobbin 45. In this way, the hybrid carbon fiber spun yarn of the present invention can be obtained.
- the hybrid carbon fiber spun yarn of the present invention is advantageously a single-twisted yarn in order to obtain a thin yarn, but if necessary, a twisting machine having a structure as shown in Fig. 4 may be used. It can also be used as a twisted yarn.
- a twisting machine shown in FIG. 4 first, two single twisted yarns are combined by a tail stand 51, passed through a sliver guide 52, a front guide 53 and a snell guide 54, and then a spindle 57 having a ring 55 and a brake pedal 56. And twisted by a bobbin 58. In this way, a twisted yarn of the hybrid carbon fiber spun yarn can be obtained.
- the hybrid carbon fiber spun yarn fabric of the present invention contains 30% by mass or more (more preferably 40% by mass or more) of the hybrid carbon fiber spun yarn of the present invention. Including the hybrid carbon fiber spun yarn in the hybrid carbon fiber spun yarn fabric of the present invention. When the proportion is less than 30% by mass, the adhesion between the resulting woven fabric and the matrix material is lowered, and the mechanical strength of the resulting woven fabric cannot be improved.
- the specific weaving method for obtaining the hybrid carbon fiber spun yarn fabric of the present invention is not particularly limited, and for example, plain weaving, satin weaving, twill weaving, basket weaving and the like are suitably employed, and plain weaving is particularly preferable.
- the hybrid carbon fiber spun yarn of the present invention may be used as at least one of a warp and a weft that can effectively utilize its strength. It is more preferable to use the hybrid carbon fiber spun yarn of the present invention for both the weft and the weft.
- the hybrid carbon fiber spun yarn of the present invention accounts for 30% by mass or more, but as a component other than the hybrid carbon fiber spun yarn,
- Other carbon fiber spun yarns and spun yarns made of synthetic resin fibers such as polyamide fibers, polyester fibers, acrylic fibers, and polyethylene terephthalate fibers may be included.
- hybrid carbon fiber spun yarn fabric of the present invention thus obtained is not particularly limited, but is particularly suitable as a gas diffuser for a solid polymer electrolyte fuel cell.
- the volume resistivity of the hybrid carbon fiber spun yarn fabric of the present invention is preferably 20 to 1500 ⁇ ⁇ ⁇ , more preferably ⁇ 50 to 700 ⁇ ′m, particularly preferably ⁇ or 50. ⁇ 400 ⁇ • m.
- the present invention preferably from 70 ⁇ 400g / m 2 force S, 80 to 200 g / m 2 is particularly preferred.
- the FAW of the fabric exceeds the above upper limit, the current collection capability improves, but there is a tendency for the gas permeability to decrease due to a decrease in voids, while the FRW of the fabric tends to decrease. If it is less than the range, the contact with the catalyst layer tends to decrease, and the current collecting ability tends to decrease.
- the thickness of the hybrid carbon fiber spun yarn fabric of the present invention is not particularly limited, but is preferably from 0.1 to OOmm force S, more preferably from 0.10 to 0.60 mm force S, and from 0.10 to 10 Particularly preferred is 0.40 mm.
- the thickness of the fabric exceeds the upper limit. Then, the air permeability tends to be difficult to be maintained. On the other hand, if it is less than the lower limit, it takes time to diffuse the reaction gas and the battery performance tends to be lowered.
- the density of the carbon fiber, the tensile strength of the spun yarn, the adhesion between the spun yarn and the matrix material, and the thickness of the spun yarn fabric were evaluated or measured by the following methods, respectively.
- a predetermined amount of zinc chloride and 1% hydrochloric acid was weighed into a beaker and mixed. The obtained mixture was transferred to a 500 ml graduated cylinder, immersed in a low-temperature water bath at 20 ⁇ 1.0 ° C to reach a temperature of 20 soil 1.0 ° C, and the specific gravity was measured by floating a hydrometer. Ten specific gravity solutions were prepared by appropriately changing the relative amounts of zinc chloride and 1% hydrochloric acid.
- a density gradient tube was made by pouring 2 ml of each of the above 10 specific gravity liquids into a 20 ml graduated cylinder while gently passing along the tube wall with high strength.
- about 0.1 lg of a carbon fiber sample that was crushed in a mortar and passed through a standard sieve having an opening of 150 ⁇ m was dispersed in a small amount of ethanol to obtain a sample dispersion.
- this density gradient tube was immersed in a low temperature constant temperature bath of 20 ⁇ 1.0 ° C. After 30 minutes, the sample dispersion was gently put into the density gradient tube and allowed to stand for 12 hours or more. After 12 hours or more had elapsed, the position of the sample in the density gradient tube was read, and the density of the sample was determined using a density conversion table.
- the spun yarn has a breaking strength of 300 mm / min.
- the tensile strength of the spun yarn was divided by the tex.
- the adhesion between the spun yarn and the matrix material was determined by the following method.
- a hybrid carbon fiber impregnated with phenol resin (“PL-4804” manufactured by Gunei Chemical Industry Co., Ltd.).
- Weaved yarn fabrics were dried with warm air of 40-80 ° C for 24 hours (such as hybrid carbon fiber spun yarn fabrics 38-46% by mass, phenol resin 54-62% by mass)
- 10 sheets were laminated, press-molded at a temperature of 170 ° C. and a pressure of 0.06 MPa for 1 hour, and then heat-treated at 2000 ° C. for 1 hour in a vacuum furnace. Thereafter, the furnace force was taken out and used as a sample.
- the thickness of the spun yarn fabric was measured according to the method 1 described in the carbon fiber cloth test method, JCFS 003-1982.
- JCFS 003-1982 The thickness of the spun yarn fabric was measured according to the method 1 described in the carbon fiber cloth test method, JCFS 003-1982.
- PPM_25 type manufactured by Mitutoyo Corporation
- a pitch-type isotropic carbon fiber bundle manufactured by Kureha Co., Ltd., Sauce Tow T-101S, 23 g / m
- a drawing process using four drawing machines configured as shown in Fig. 2.
- the carbon fiber bundle is stretched 3 times to form one carbon fiber bundle, and further, the two carbon fiber bundles are combined with the 3rd drawing machine.
- Two carbon fiber bundles were combined and stretched by 5.0 times with a drawing machine to obtain one 0.66 g / m (660 te x ) pitch-based isotropic carbon fiber bundle.
- this one carbon fiber bundle is stretched to 5.0 times to form one carbon fiber bundle, and further, this two carbon fiber bundles are combined in the second drawing machine. Stretched to 0 times to make one carbon fiber bundle, and then combined these two carbon fiber bundles with a third rolling machine. 4. Stretched to 3 times to make one carbon fiber bundle, and then Two carbon fiber bundles were combined and stretched 4.3 times with a drawing machine to obtain one pitch system isotropic carbon fiber bundle of 0.398 g / m (398 tex).
- a pitch-type isotropic carbon fiber bundle manufactured by Kureha Co., Ltd., Sauce Tow T_ 101 S, 23 g / m
- a drawing process using four drawing machines configured as shown in Fig. 2.
- the carbon fiber bundle is stretched 0 times to form one carbon fiber bundle, and further, the two carbon fiber bundles are combined with a third rolling machine 4.0 times to obtain a single carbon fiber bundle.
- Two carbon fiber bundles were combined and stretched by a factor of 3.5 using a drawing machine to obtain a pitch-based isotropic carbon fiber bundle having a unit of 1.64 g / m (1640 tex).
- the two carbon fiber bundles are combined together and stretched by a factor of 3.5 to form one carbon fiber bundle, and further, the two carbon fiber bundles are combined using the second drawing machine. Stretched 0 times to make a single carbon fiber bundle, and then combined the two carbon fiber bundles with a third rolling machine to draw 3.0 times to make a single carbon fiber bundle.
- Two carbon fiber bundles were combined and stretched 2.9 times with a four-stretching machine to obtain a pitch isotropic carbon fiber bundle of 4.0 g / m (4000 tex).
- a pitch-type isotropic carbon fiber bundle manufactured by Kureha Co., Ltd., Sauce Tow T_ 101 S, 23 g / m
- a drawing process using four drawing machines configured as shown in Fig. 2.
- the carbon fiber bundle is stretched 0 times to form one carbon fiber bundle, and further, the two carbon fiber bundles are combined with a third rolling machine 4.0 times to obtain a single carbon fiber bundle.
- the two carbon fiber bundles were combined and stretched by a factor of 3.1 using a drawing machine to obtain a single pitch-based isotropic carbon fiber bundle of 1.187 g / m (1187 tex).
- the two carbon fiber bundles are combined and stretched 4.0 times to form one carbon fiber bundle, and further, the two carbon fiber bundles are combined in the second drawing machine. Stretch twice to make one carbon fiber bundle, and then combine the two carbon fiber bundles with a third drawing machine. 5. Stretch twice to make one carbon fiber bundle. Combine these two carbon fiber bundles with a 4 drawing machine and stretch them 5.2 times to form one carbon fiber bundle, and then stretch this 1 carbon fiber bundle with a fifth drawing machine to 5.0 times. As a result, one 0.13 2 g / m (132 te X ) pitch-based isotropic carbon fiber bundle was obtained.
- the long fiber long carbon fiber bundle 36 is simultaneously fed through the middle roller 37, and the short fiber long carbon fiber bundle and the long fiber long carbon fiber are fed.
- a 66tex hybrid carbon fiber spun yarn was obtained by blending the bundle.
- hybrid carbon fiber spun yarn obtained in this way one twisted yarn composed of the short fiber long carbon fiber bundle is twisted together with the core portion composed of the long fiber long carbon fiber bundle.
- the outer peripheral surface of the core part was completely covered with the twisted yarn (outer peripheral part) wound around it. Further, the obtained hybrid carbon fiber spun yarn had sufficiently high uniformity of fineness with small variations in fineness.
- the 920 tex pitch-based isotropic carbon fiber bundle obtained in Production Example 2 was used in place of the pitch-based isotropic carbon fiber bundle obtained in Production Example 1, and 20 tex PAN was used as the long-fiber long carbon fiber bundle.
- Long fiber long carbon fiber bundles obtained by splitting 33tex PAN continuous long fiber long fiber long carbon fiber bundles (Toshou Tenax Co., Ltd., Besufite, HTA-W1K))
- a 66tex hybrid carbon fiber spun yarn was obtained in the same manner as in Example 1 except that it was used.
- the composition of the hybrid carbon fiber spun yarn thus obtained was the same as that obtained in Example 1, and the fineness uniformity was sufficiently high.
- the 398 tex pitch-based isotropic carbon fiber bundle obtained in Production Example 3 was used instead of the pitch-based isotropic carbon fiber bundle obtained in Production Example 1, and a 33-tex PAN was used as a long-fiber long carbon fiber bundle.
- Long fiber long carbon fiber bundle manufactured by Toho Tenax Co., Ltd., Besufite, H TA_W1K
- a 66 tex hybrid carbon fiber spun yarn was obtained in the same manner as in Example 1, except that the one was combined into 46 tex. High thus obtained
- the composition of the spun yarn of the blitted carbon fiber was the same as that obtained in Example 1, and the uniformity of the fineness was sufficiently high.
- Example 1 except that a long fiber long carbon fiber bundle of 33 tex PAN-based continuous long fibers (made by Toray Industries, Ltd., obtained by splitting M40) was used as the long fiber long carbon fiber bundle Similarly, 66tex hybrid carbon fiber spun yarn was obtained.
- the composition of the hybrid carbon fiber spun yarn thus obtained was the same as that obtained in Example 1, and the fineness uniformity was sufficiently high.
- a hybrid carbon fiber spun yarn fabric having a FAW of 95 g and a thickness of 0.12 mm was obtained in the same manner as in Example 1 except that the weaving method was changed from plain weave to twill weave.
- the 1640-tex pitch-based isotropic carbon fiber bundle obtained in Production Example 4 was used, and as a long fiber long carbon fiber bundle, 67tex A 149tex hybrid carbon fiber spun yarn was obtained in the same manner as in Example 1 except that a long-fiber-long-carbon fiber bundle (manufactured by Toho Tenax Co., Ltd., Besfite, HTA-W1K) was used. .
- the composition of the hybrid carbon fiber spun yarn thus obtained was the same as that obtained in Example 1, and the uniformity of the fineness was sufficiently high.
- the 4000-tex pitch-based isotropic carbon fiber bundle obtained in Production Example 5 was used, and further 200 tex as a long-fiber long carbon fiber bundle.
- a 400 tex hybrid carbon fiber spun yarn was obtained in the same manner as in Example 1 except that a long carbon fiber bundle (manufactured by Toho Tenax Co., Ltd., Besfite, HTA-3K) of PAN-based continuous long fiber was used. It was.
- the composition of the hybrid carbon fiber spun yarn thus obtained was the same as that obtained in Example 1, and the fineness uniformity was sufficiently high.
- a long fiber long carbon fiber bundle of 33 tex pitch-type anisotropic continuous long fibers (Mitsubishi Chemical Industries, Ltd., DIALEAD, obtained by splitting K32112) was used as the long fiber long carbon fiber bundle.
- a 66tex hybrid carbon fiber spun yarn was obtained in the same manner as Example 1 except for the above. The composition of the hybrid carbon fiber spun yarn thus obtained was the same as that obtained in Example 1, and the uniformity of the fineness was sufficiently high.
- a 66-tex hybrid was prepared in the same manner as in Example 1 except that the 660 tex PAN-based carbon fiber bundle obtained in Production Example 6 was used instead of the pitch-based isotropic carbon fiber bundle obtained in Production Example 1. Carbon fiber spun yarn was obtained. The composition of the hybrid carbon fiber spun yarn thus obtained was the same as that obtained in Example 1, and the uniformity of the fineness was sufficiently high.
- a 66 tex pitch isotropic carbon fiber spun yarn was obtained in the same manner as in Example 1 except that the yarn was stretched in the same manner as in Example 1.
- the pitch-based isotropic carbon fiber spun yarn thus obtained has a fineness. The variation was large.
- Long fiber long carbon of 66tex PAN continuous long fiber obtained by splitting long fiber long carbon fiber bundles (Toho Tenax Co., Ltd., Besfight, HTA-W1K) of 67tex PAN continuous long fibers By plain weaving using only fiber bundles, a PAN-based carbon fiber woven fabric with a FAW of 95 gZm 2 and a thickness of 0.12 mm was obtained.
- the 1187-tex pitch-type isotropic carbon fiber bundle obtained in Production Example 7 was used instead of the pitch-type isotropic carbon fiber bundle obtained in Production Example 1.
- 6tex PAN continuous long fibers 33tex PAN continuous long fiber long fiber long carbon fiber bundles manufactured by Toho Tenax Co., Ltd., Bes shimmer, HTA-W05K
- 66tex hybrid carbon fiber spun yarn was obtained in the same manner as in Example 1 except that the obtained one was used.
- the 132-tex pitch-type isotropic carbon fiber bundle obtained in Production Example 8 was used, and as a long-fiber long-carbon fiber bundle, 33-tex PAN Long fiber length carbon fiber bundles (manufactured by Toho Tenax Co., Ltd., Besufite, HTA-W05K) obtained by splitting this with a 26. 4 tex PAN continuous long fiber length A 66 tex hybrid carbon fiber spun yarn was obtained in the same manner as in Example 1 except that one bundle of long carbon fiber bundles was used to make 59.4 tex.
- Table 1 shows the density, length, and tensile strength of each carbon fiber constituting the part and the outer peripheral part.
- Table 1 shows the content ratio of long carbon fibers to the short carbon fibers in each hybrid carbon fiber spun yarn, and the fineness, tensile strength, and adhesiveness of each hybrid carbon fiber spun yarn to the matrix material.
- the thickness, FA W (Fiber Area Weight) and weaving method of the hybrid carbon fiber spun yarn fabrics obtained in Examples:! To 9 and Comparative Examples:! To 4 were as shown in Table 1.
- t is a pitch-based isotropic carbon fiber spun yarn
- t is a long-fiber long carbon fiber bundle of PAN continuous long fibers.
- Comparative Example 1 In Comparative Example 1, it is a woven fabric that also has a pitch-based isotropic carbon fiber spinning yarn strength. In Comparative Example 2, L also has a long-fiber-long carbon fiber bundle strength of PAN-based fast-acting long fibers. It is a woven fabric.
- the hybrid carbon fiber spun yarns of the present invention (Examples:! To 9) have sufficiently high tensile strength and sufficient adhesion to the matrix material. It was confirmed that the strength was excellent and the uniformity of the fineness was sufficiently high as described above. Therefore, the hybrid carbon fiber spun yarn fabric of the present invention (Example:! To 9) obtained using the hybrid carbon fiber spun yarn of the present invention is excellent in adhesion to the matrix material and mechanical strength. The thickness uniformity was also excellent.
- the present invention As described above, according to the present invention, a high tensile strength can be achieved without deteriorating adhesion to a matrix material such as a polymer material, and the strength and fineness uniformity are excellent. Ridged carbon fiber spun yarn can be provided. Therefore, the noble and hybrid carbon fiber spun yarn of the present invention is very useful as a fiber for a gas diffuser of a solid polymer electrolyte fuel cell, a fiber for reinforcing a composite material for spacecraft, or the like.
- the hybrid carbon fiber spun yarn fabric of the present invention is used as a carbon fiber fabric used for a gas diffuser of a solid polymer electrolyte fuel cell, a C / C composite material, a heater, a fabric, a reinforcing material for molded insulation, and the like. Very useful.
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Abstract
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020077021949A KR101156316B1 (ko) | 2005-02-22 | 2006-02-17 | 하이브리드 탄소 섬유 방적사 및 이것을 사용한 하이브리드탄소 섬유 방적사 직물 |
| US11/884,872 US8171711B2 (en) | 2005-02-22 | 2006-02-17 | Hybrid carbon fiber spun yarn and hybrid carbon fiber spun yarn fabric using the same |
| EP06713963A EP1854911A1 (en) | 2005-02-22 | 2006-02-17 | Hybrid carbon fiber spun yarn and hybrid carbon fiber spun yarn fabric using same |
| CN2006800055277A CN101124355B (zh) | 2005-02-22 | 2006-02-17 | 混杂碳纤维细纱、其织物和该混杂碳纤维细纱的制造方法 |
| JP2007504688A JP4822552B2 (ja) | 2005-02-22 | 2006-02-17 | ハイブリッド炭素繊維紡績糸及びそれを用いたハイブリッド炭素繊維紡績糸織物 |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005-046155 | 2005-02-22 | ||
| JP2005046155 | 2005-02-22 |
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| WO2006090643A1 true WO2006090643A1 (ja) | 2006-08-31 |
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| PCT/JP2006/302822 Ceased WO2006090643A1 (ja) | 2005-02-22 | 2006-02-17 | ハイブリッド炭素繊維紡績糸及びそれを用いたハイブリッド炭素繊維紡績糸織物 |
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| Country | Link |
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| US (1) | US8171711B2 (ja) |
| EP (1) | EP1854911A1 (ja) |
| JP (1) | JP4822552B2 (ja) |
| KR (1) | KR101156316B1 (ja) |
| CN (1) | CN101124355B (ja) |
| WO (1) | WO2006090643A1 (ja) |
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| WO2010021045A1 (ja) * | 2008-08-21 | 2010-02-25 | 株式会社クレハ | 等方性ピッチ系炭素繊維織物及びその製造方法 |
| US20100330858A1 (en) * | 2006-08-22 | 2010-12-30 | Kureha Corporation | Molded article containing stacked carbon fiber and method for producing same |
| JP2013100226A (ja) * | 2013-01-10 | 2013-05-23 | Toyo Tanso Kk | 膨張黒鉛シート及びこの膨張黒鉛シートを用いた炭素質ルツボの保護方法並びに単結晶引き上げ装置 |
| WO2013077087A1 (ja) * | 2011-11-21 | 2013-05-30 | 津田駒工業株式会社 | 炭素繊維基材及び炭素繊維強化プラスチック |
| US20220195639A1 (en) * | 2019-04-16 | 2022-06-23 | Calik Denim Tekstil San. Ve Tic. A.S. | Composite yarn, fabric comprising the composite yarn, method for producing a composite yarn and arrangement for producing a composite yarn |
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| JP4446721B2 (ja) * | 2003-12-01 | 2010-04-07 | 株式会社クレハ | 炭素繊維紡績糸およびその織物 |
| JP4538502B2 (ja) * | 2005-04-18 | 2010-09-08 | 帝人株式会社 | ピッチ系炭素繊維、マットおよびそれらを含む樹脂成形体 |
| GB2477531B (en) * | 2010-02-05 | 2015-02-18 | Univ Leeds | Carbon fibre yarn and method for the production thereof |
| DE102010030773A1 (de) * | 2010-06-30 | 2012-01-05 | Sgl Carbon Se | Garn oder Nähgarn und Verfahren zum Herstellen eines Garns oder Nähgarns |
| DE102014210262A1 (de) * | 2014-05-28 | 2015-12-03 | Bayerische Motoren Werke Aktiengesellschaft | Brennstoffzellengehäuse |
| PL3155154T3 (pl) * | 2014-06-13 | 2021-09-20 | Southern Mills, Inc. | Tkanina ognioodporna mająca przędze z długich włókien ciętych o wysokiej wytrzymałości na rozciąganie |
| EP3015576A1 (de) | 2014-10-27 | 2016-05-04 | Basf Se | Verfahren und Vorrichtung zur Herstellung von Carbonfaserhalbzeugen |
| CN105951239B (zh) * | 2016-07-20 | 2017-12-29 | 江南大学 | 一种碳纤维包芯纱织物的生产方法 |
| MX2022006710A (es) | 2019-12-05 | 2022-07-12 | Southern Mills Inc | Telas resistentes a la flama formadas por hilos cortados largos e hilos de filamento. |
| CN119526645B (zh) * | 2024-12-06 | 2026-04-21 | 郑州大学 | 一种高韧性碳玻超混杂复合材料、制备方法及应用 |
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| CN1141427C (zh) * | 2002-03-07 | 2004-03-10 | 薛元 | 短纤维包覆长丝的包芯复合纱线的制造方法及其装置 |
| JP2003288906A (ja) | 2002-03-27 | 2003-10-10 | Toray Ind Inc | 電極用炭素繊維織物、ガス拡散体、膜−電極接合体および燃料電池 |
| WO2005012604A2 (ja) | 2003-07-31 | 2005-02-10 | Mitsubishi Rayon Co., Ltd. | 炭素繊維束及びその製造方法、並びに熱可塑性樹脂組成物及びその成形品 |
-
2006
- 2006-02-17 EP EP06713963A patent/EP1854911A1/en not_active Withdrawn
- 2006-02-17 CN CN2006800055277A patent/CN101124355B/zh not_active Expired - Fee Related
- 2006-02-17 JP JP2007504688A patent/JP4822552B2/ja not_active Expired - Fee Related
- 2006-02-17 WO PCT/JP2006/302822 patent/WO2006090643A1/ja not_active Ceased
- 2006-02-17 KR KR1020077021949A patent/KR101156316B1/ko not_active Expired - Fee Related
- 2006-02-17 US US11/884,872 patent/US8171711B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5381735A (en) * | 1976-12-25 | 1978-07-19 | Nippon Carbon Co Ltd | Method of producing carbon fiber spinning yarn |
| JPS59228068A (ja) * | 1983-06-10 | 1984-12-21 | 井上 勇太郎 | 炭素繊維製布の製法 |
| JPH01246434A (ja) * | 1988-03-22 | 1989-10-02 | Nippon Pillar Packing Co Ltd | 複合線状体及びその製造方法 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100330858A1 (en) * | 2006-08-22 | 2010-12-30 | Kureha Corporation | Molded article containing stacked carbon fiber and method for producing same |
| US8962500B2 (en) * | 2006-08-22 | 2015-02-24 | Kureha Corporation | Molded article containing stacked carbon fiber and method for producing same |
| WO2010021045A1 (ja) * | 2008-08-21 | 2010-02-25 | 株式会社クレハ | 等方性ピッチ系炭素繊維織物及びその製造方法 |
| JPWO2010021045A1 (ja) * | 2008-08-21 | 2012-01-26 | 株式会社クレハ | 等方性ピッチ系炭素繊維織物及びその製造方法 |
| WO2013077087A1 (ja) * | 2011-11-21 | 2013-05-30 | 津田駒工業株式会社 | 炭素繊維基材及び炭素繊維強化プラスチック |
| JP2013108194A (ja) * | 2011-11-21 | 2013-06-06 | Tsudakoma Corp | 炭素繊維基材及び炭素繊維強化プラスチック |
| JP2013100226A (ja) * | 2013-01-10 | 2013-05-23 | Toyo Tanso Kk | 膨張黒鉛シート及びこの膨張黒鉛シートを用いた炭素質ルツボの保護方法並びに単結晶引き上げ装置 |
| US20220195639A1 (en) * | 2019-04-16 | 2022-06-23 | Calik Denim Tekstil San. Ve Tic. A.S. | Composite yarn, fabric comprising the composite yarn, method for producing a composite yarn and arrangement for producing a composite yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| US8171711B2 (en) | 2012-05-08 |
| JPWO2006090643A1 (ja) | 2008-07-24 |
| CN101124355B (zh) | 2010-07-28 |
| CN101124355A (zh) | 2008-02-13 |
| EP1854911A1 (en) | 2007-11-14 |
| JP4822552B2 (ja) | 2011-11-24 |
| US20080152906A1 (en) | 2008-06-26 |
| KR20070116012A (ko) | 2007-12-06 |
| KR101156316B1 (ko) | 2012-06-13 |
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