WO2013191073A1 - Mat en fibre en carbone et matériau composite en fibre de carbone l'utilisant - Google Patents

Mat en fibre en carbone et matériau composite en fibre de carbone l'utilisant Download PDF

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Publication number
WO2013191073A1
WO2013191073A1 PCT/JP2013/066300 JP2013066300W WO2013191073A1 WO 2013191073 A1 WO2013191073 A1 WO 2013191073A1 JP 2013066300 W JP2013066300 W JP 2013066300W WO 2013191073 A1 WO2013191073 A1 WO 2013191073A1
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Prior art keywords
carbon fiber
carbon
bundle
composite material
fibers
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PCT/JP2013/066300
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English (en)
Japanese (ja)
Inventor
成瀬恵寛
佐野高男
関戸俊英
橋本貴史
三好且洋
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東レ株式会社
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Priority to JP2013527198A priority Critical patent/JPWO2013191073A1/ja
Publication of WO2013191073A1 publication Critical patent/WO2013191073A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4242—Carbon fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/52—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by applying or inserting filamentary binding elements
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/593—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/507—Polyesters
    • D06M15/51—Unsaturated polymerisable polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/53—Polyethers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/55—Epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/40—Fibres of carbon
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions

Definitions

  • the present invention relates to a carbon fiber mat and a carbon fiber composite material comprising the same, and in particular, a carbon fiber that can produce a molded article having excellent formability even in a complicated shape and having highly isotropic mechanical properties.
  • the present invention relates to a mat and a carbon fiber composite material comprising the mat.
  • a sheet-like carbon fiber composite material is used as a molding material, and the carbon fiber composite material is pressed into a predetermined shape under a predetermined temperature and pressure condition.
  • a technique for forming (stamping) is known.
  • carbon as a molding material is formed so as to be molded in a desired carbon fiber reinforced form over all parts of the complex shape.
  • High fluidity is required for fiber composite materials.
  • the fluidity of the carbon fiber composite material is low, not only good moldability cannot be obtained, but the mechanical properties of the molded product may be lowered, and the variation in mechanical properties may be increased.
  • Patent Document 1 discloses a carbon fiber composite material in which carbon fibers are opened to form a mat and impregnated with a thermoplastic resin.
  • the carbon fiber composite material of Patent Document 1 since the carbon fibers are opened, the surface quality is good and thinning is possible. However, since the opened carbon fibers are strongly entangled, the material at the time of press molding The fluidity of was low. Further, since the orientation of the carbon fibers has anisotropy, the ratio of the mechanical properties of the obtained molded product is large.
  • Patent Document 2 discloses a carbon fiber composite material in which a carbon fiber bundle is separated by a card spinning machine to form a two-dimensional pseudo-isotropic carbon fiber mat and impregnated with a thermosetting resin. ing.
  • the carbon fiber mat of Patent Document 2 although the carbon fibers are in a quasi-isotropic orientation state in the plane direction, the carbon fiber mat is oriented extremely randomly in the three-dimensional direction, so the thickness direction (z-axis direction) Due to the presence of a large number of carbon fibers oriented in the direction, the fluidity at the time of molding is low, and it is difficult to make the variation in mechanical properties of the molded product uniform.
  • the problem of the present invention is that the carbon fiber composite material obtained from a conventional carbon fiber mat can exhibit high fluidity at the time of molding, the molded product has good mechanical properties, and the background of the mechanical properties.
  • the object is to provide a carbon fiber mat and a carbon fiber composite material having a high isotropic ratio.
  • the carbon fibers in the discontinuous fiber web have anisotropy, and a plurality of the webs are stacked and bonded in a pseudo isotropic manner.
  • the pseudo isotropic lamination of the present invention is, for example, a web spun from a card machine or the like, and a plurality of the webs are laminated so as to have pseudo isotropic as a whole.
  • the lamination method is not particularly limited.
  • the web may be a two-layer lamination of 0 ° / 90 °, a four-layer lamination of 0 ° / 90 ° / 45 ° / ⁇ 45 °, or an eight-layer lamination in which it is symmetrical. It is also good.
  • An example of the pseudo-isotropic laminate of the present invention is shown in FIG. FIG.
  • FIG. 1 is a schematic view showing a state in which eight layers of anisotropic discontinuous fiber webs are laminated at (0 ° / 90 ° / 45 ° / ⁇ 45 °) s (s indicates the target arrangement).
  • a plurality of webs stacked in layers such as a plurality of sheets in the same 0 ° direction and a plurality of sheets in the same 90 ° direction are stacked, and a plurality of layers are stacked in a pseudo isotropic manner as a whole. Is within the range.
  • the webs oriented at the respective angles may be randomly combined and laminated so as to have pseudo-isotropic properties as a whole.
  • the stacking angle is not particularly limited, and pseudo isotropic stacking may be performed by combining other angles such as 30 ° and 60 ° in addition to 0 °, 45 °, and 90 °.
  • a four-layer laminate of 0 ° / 90 ° / 45 ° / ⁇ 45 ° is used as one unit, and more preferably an eight-layer laminate obtained by symmetrizing it is used as one unit. .
  • the carbon fiber mat laminated as described above can be used as one unit, and a plurality of them can be combined to form a carbon fiber mat composite.
  • a plurality of carbon fiber mats can be stacked to form a carbon fiber mat composite, or a plurality of sets can be arranged vertically and horizontally to form a carbon fiber mat composite.
  • What is necessary is just to design and produce a carbon fiber mat composite so that it becomes the target thickness and shape when the carbon fiber mat of the present invention is used as a composite material, and there is no particular limitation as to the combination.
  • the fiber length of the carbon fiber of the present invention is in the range of 5 to 100 mm.
  • the anisotropic discontinuous fiber web with carbon fibers in such a fiber length range, it becomes possible to flow the carbon fiber composite material while maintaining a state in which the carbon fibers are well dispersed. Variation in the distribution of carbon fibers after molding (for example, variation in fiber volume content) is reduced, the mechanical properties of the molded product are stabilized, and the variation in mechanical properties is also reduced.
  • a more preferable range of the fiber length is 5 to 50 mm, and a more preferable range is 10 to 30 mm.
  • carbon fibers having different fiber lengths are mixed.
  • the orientation of carbon fibers with different fiber lengths when the mat of the present invention is produced by a card machine or the like changes, so that the anisotropy is controlled. Can do.
  • One type of carbon fibers having different fiber lengths may be mixed, or two or more types may be mixed depending on the purpose.
  • the basis weight of the anisotropic discontinuous fiber web of the present invention is in the range of 5 to 50 g / m 2 .
  • an anisotropic discontinuous fiber web having a relatively small basis weight is characterized by being quasi-isotropically laminated, and has a different form from a conventional carbon fiber mat. Since the web having such a weight per unit area can be designed to have a small thickness when quasi-isotropically stacked, not only can the overall thickness be reduced even when a plurality of stacked minimum units are stacked. In addition, since a structure in which more discontinuous fibrous webs having anisotropy are laminated, a carbon fiber mat having more uniform isotropic properties can be obtained.
  • a more preferable range of the basis weight is 5 to 30 g / m 2 , and a more preferable range is 10 to 20 g / m 2 .
  • a plurality of anisotropic discontinuous fiber webs are stacked and joined.
  • the term “bonded” means that the webs are joined together by some method, and the bonding method is preferably bonded, entangled, or stitched, and these may be combined singly or in combination depending on the purpose. preferable.
  • each web is easily displaced and broken when handled, and the handling property is bad.
  • the resin is impregnated to make this a carbon fiber composite material
  • the layers of the webs are displaced from each other, making it difficult to mold, or the physical properties of the obtained carbon fiber composite material are low.
  • the carbon fiber webs are joined as in the present invention, the webs are integrated, so that the handleability is improved and the webs are not displaced during resin impregnation.
  • the formability is good and the physical properties of the obtained carbon fiber composite material are good, which is preferable.
  • an adhesive an adhesive such as a tackifier, a thermal fusion film or a thermal fusion fiber may be used.
  • carbon fibers may be entangled by needle punch, water jet punch or the like, or various fibers such as synthetic fiber and glass fiber may be mixed and entangled by the above method.
  • ⁇ As a method of stitching between webs, it is preferable to connect them with stitch yarns. Although it does not specifically limit as a kind of fiber of a stitch yarn, Polyamide fiber, polyester fiber, polyolefin fiber, polyaramid fiber, etc. are mentioned.
  • the background anisotropy of the carbon fibers in the anisotropic discontinuous fiber web of the present invention is preferably in the range of 1: 1.05 to 1: 5. Since the background anisotropy required by the measurement method described later is within this range, the orientation of carbon fibers in the carbon fiber mat when quasi-isotropically laminated becomes more random isotropic as a whole. The difference in physical properties between 0 ° and 90 ° in the mechanical properties of the carbon fiber composite material is reduced, and the mechanical properties of the molded product are stabilized and the variation thereof is reduced.
  • a more preferable range of the background anisotropy is 1: 1.05 to 1: 2, and a more preferable range is 1: 1.05 to 1: 1.4.
  • the tensile strength of the carbon fiber of the present invention is preferably 3300 to 6500 MPa.
  • the mechanical properties when the carbon fiber mat of the present invention is made into a carbon fiber composite material can be further enhanced.
  • the tensile strength is within this range, it is preferable because the carbon fibers are hardly cut when the mats of the present invention are joined.
  • a more preferable range of the tensile strength is 4200 to 6500 MPa, and a further preferable range is 4800 to 6500 MPa.
  • the tensile elastic modulus of the carbon fiber of the present invention is preferably 200 to 600 GPa.
  • the mechanical properties when the carbon fiber mat of the present invention is made into a carbon fiber composite material can be further enhanced.
  • it is preferable that the tensile elastic modulus is within this range, since the carbon fibers are difficult to bend when the mat of the present invention is produced by a card machine or the like, and the anisotropy of the discontinuous fiber web can be increased.
  • a more preferable range of the tensile modulus is 220 to 600 GPa, and a more preferable range is 280 to 600 GPa.
  • the carbon fiber of the present invention is preferably provided with a sizing agent.
  • a sizing agent By imparting the sizing agent, it is possible to control the convergence of the carbon fibers, and it is possible to control the anisotropy of the web when producing the discontinuous fiber web.
  • the kind of the sizing agent various modified products of polyethylene glycol, various modified products of glycerin and polyglycerin, various modified products of bisphenol A, and unsaturated polyesters as main components are preferable. These may be used alone or in combination according to the purpose.
  • the above sizing agent it is possible to appropriately adjust the bundling property and adhesion of the single yarn in the carbon fiber bundle, so that the anisotropy of the carbon fiber in the web can be controlled.
  • the carbon fibers are likely to be relatively bundled, and the carbon fibers are bundled when applied to a card machine or the like. Opening is difficult, and the carbon fibers in the web tend to face in one direction, so the anisotropy tends to increase.
  • the carbon fiber bundle in the carbon fiber mat has a number average x of the number of carbon fibers constituting the carbon fiber bundle (1) in which the number of carbon fibers constituting the carbon fiber bundle is 90 or more in the range of 90 to 1000.
  • the quantity average x of the number of carbon fibers constituting the bundle is 90 to 600. More preferably, it is in the range of 90 to 500.
  • the number average x is more preferably in the range of 300 to 1,000, more preferably 500 to 1,000. is there.
  • the number average x of the carbon fiber bundles is less than 90, the number of entanglements between the fibers increases and the fluidity deteriorates.
  • the number exceeds 1000 the mechanical properties and the carbon fiber followability to fine parts such as ribs are deteriorated, and the variation in mechanical properties becomes large.
  • the standard deviation ⁇ of the number xn of carbon fibers constituting the carbon fiber bundle (1) in the carbon fiber sheet is in the range of 50 ⁇ ⁇ ⁇ 500, the carbon fiber bundle is dispersed in the carbon fiber sheet. By being distributed, it is possible to obtain a carbon fiber mat that can achieve both high fluidity and mechanical properties, has little variation in mechanical properties, and has excellent carbon fiber followability to fine parts.
  • the standard deviation ⁇ is less than 50, the fluidity is deteriorated, and when the standard deviation ⁇ is more than 500, the mechanical characteristics are deteriorated and the variation of the mechanical characteristics is increased.
  • the standard deviation ⁇ is more preferably in the range of 100 ⁇ ⁇ ⁇ 350, still more preferably in the range of 150 ⁇ ⁇ ⁇ 350, and still more preferably in the range of 150 ⁇ ⁇ ⁇ 300.
  • At least one selected from synthetic fibers, natural fibers, glass fibers, and inorganic fibers is mixed with carbon fibers.
  • synthetic fibers By blending the above fibers together with carbon fibers, it is possible to improve yield, stabilize production, and reduce costs during web production. Further, it is possible to impart functionality and control mechanical properties when a carbon fiber composite material is used.
  • the mat of the present invention is made of a carbon fiber composite material, if the matrix resin is a thermoplastic resin, the synthetic fiber of the thermoplastic resin is integrated with the matrix resin when melt-molded. It is preferable since the physical properties of the material do not deteriorate. From the above viewpoint, it is more preferable that synthetic fibers are mixed.
  • the carbon fiber mat of the present invention has a structure in which a plurality of anisotropic continuous webs are laminated, and it is preferable that all the layers have the same basis weight.
  • the same basis weight means that the basis weight of each layer falls within ⁇ 10 g / m 2 with the average value as the center value. It is preferable that the basis weights of the respective layers are the same because variations in mechanical properties are reduced when the carbon fiber composite material is formed by quasi-isotropic lamination. Further, it is preferable because the fluidity at the time of stamping molding is uniform in any direction.
  • the carbon fiber mat of the present invention has a structure in which a plurality of anisotropic discontinuous fiber webs are laminated, and it is also a preferable aspect that each layer has a different basis weight. If each layer has a different basis weight, each web is laminated in a pseudo-isotropic manner to form a carbon fiber composite material, and a layer with a relatively large basis weight when stamped and formed has many carbon fiber composite materials. A layer that flows well in the direction in which the layer faces and a layer with a relatively small basis weight can be designed to be difficult to flow, which is preferable.
  • the carbon fibers in the anisotropic discontinuous fiber web of the present invention are opened to single fibers.
  • the mechanical properties of the carbon fiber composite material can be greatly improved by opening the single fiber.
  • the surface appearance is improved when the carbon composite material is formed into a molded product.
  • the carbon fiber of the present invention it is also a preferable aspect that 70% or more of the carbon fibers in the anisotropic discontinuous fiber web are in a bundle shape.
  • the presence of single fibers in bundles can improve the fluidity when the carbon fiber composite material is molded by stamping or the like.
  • the single fibers are present in a bundle shape, the single fibers are concentrated so that the direction in which the single fibers are present can be easily directed, and the anisotropy in the mat can be controlled.
  • 80% or more of the carbon fibers are more preferably bundled, and more preferably 90% or more are bundled.
  • the carbon fiber mat of the present invention can be integrated with a matrix resin to form a carbon fiber composite material.
  • matrix resin it does not specifically limit as matrix resin, It is preferable to use a thermoplastic resin, a thermosetting resin, and resin which can be carbonized after baking, These may be used independently and it is also preferable to use in combination of multiple.
  • the thermoplastic resin used in the present invention includes polyamide resin, polyester resin, polyolefin resin, polyphenylene sulfide resin, polyacetal resin, polycarbonate resin, polyether sulfone resin, polyether ether ketone resin, polyphenylene ether resin, polysulfone resin, liquid crystal polymer. Etc. In consideration of moldability, physical properties, cost, etc., among the thermoplastic resins, it is preferable to use a polyamide resin, a polyolefin resin, a polyphenylene sulfide resin, or a polyether ether ketone resin.
  • thermosetting resins examples include epoxy resins, phenol resins, amino resins, unsaturated polyester resins, urea resins, melamine resins, and the like. In consideration of moldability, physical properties, cost, and the like, it is preferable to use an epoxy resin, a phenol resin, or an unsaturated polyester resin among the thermosetting resins.
  • Resin that can be carbonized after firing is a polymer that can be carbonized by firing after impregnation of the carbon fiber mat of the present invention, and there is no particular limitation on the resin as long as it can be carbonized. From the viewpoint of physical properties and ease of production as a c (carbon / carbon) composite, a phenol resin is preferable.
  • the carbon fiber composite material of the present invention can be various molded products. By forming into a flat plate by press molding, or pressing and flowing in a mold, a molded product having a complicated shape can be obtained. Moreover, it can also be set as a molded article by RTM shaping
  • the carbon fiber composite material of the present invention can be formed as a single product, it is a carbon fiber composite based on a unidirectional material of carbon fiber, woven fabric, papermaking, SMC, airlaid nonwoven fabric, injection pellet, GMT, metal, etc. In combination with the material, a composite molded product of the carbon fiber composite material can be obtained.
  • the molded product of the present invention is superior in physical properties and moldability compared to conventional products, it can be applied to various products such as sports applications, automotive members, aircraft members, and general industrial applications.
  • the fluidity at the time of molding is excellent, and excellent moldability is obtained even when molding into a complicated shape, and the mechanical properties of the molded product are high.
  • the carbon fiber mat according to the present invention is formed by stacking and joining a plurality of anisotropic discontinuous fiber webs and quasi-isotropically laminating the carbon fiber mat according to the present invention.
  • the anisotropy of the carbon fibers inside plays a major role.
  • the tensile strength, the tensile elastic modulus and the ratio thereof, and the bending strength, the bending elastic modulus and the ratio also play an important role. Therefore, these will be described first.
  • the matrix resin is polypropylene (PP) resin
  • PP polypropylene
  • two carbon fiber composite materials having dimensions of 100 ⁇ 100 mm ⁇ 2 mm were preheated to 230 ° C., placed on a press plate heated to 80 ° C., and pressed at 20 MPa for 5 seconds.
  • the area A2 (mm 2 ) after compression and the area A1 (mm 2 ) of the sheet before compression were measured, and A2 / A1 was defined as a flow rate (%).
  • Carbon fiber volume content (Vf) in the carbon fiber composite material About 2 g of a sample was cut out from the carbon fiber composite material press-molded product after the above flow test, and its mass was measured. Thereafter, the sample was heated in an electric furnace heated to 500 ° C. for 1 hour to burn off organic substances such as a matrix resin. After cooling to room temperature, the mass of the remaining carbon fiber was measured. The ratio of the mass of the carbon fiber to the mass of the sample before burning the organic substance such as the matrix resin was measured, and the respective volumes were determined from the density of the matrix resin and the density of the carbon fiber, and the volume content of the carbon fiber was obtained.
  • M n / L n , M n / (L n ⁇ D) and the number of single carbon fiber yarns constituting the carbon fiber bundle x n M n / (L n ⁇ F) are calculated for each bundle.
  • D is the carbon fiber diameter
  • F is the single yarn fineness of the carbon fiber
  • xn is the number of constituent single yarns of the carbon fiber bundle.
  • the carbon fiber bundle constituted a single yarn number x n is more than 90 pieces of carbon fiber bundle and carbon fiber bundle (1), the total weight as M 1, a bundle total number as N, measured. Further, the carbon fiber bundle under construction single yarn number x n is 90 present a fiber bundle (2), the total weight of the carbon fiber bundle (2) as M 2, is measured.
  • the fiber bundles opened to such an extent that they cannot be extracted with tweezers were collectively measured and finally weighed. Further, when the fiber length is short and it becomes difficult to measure the weight, the fiber length is classified at intervals of about 0.2 mm, the weight is measured for a bundle of a plurality of classified bundles, and an average value may be used. .
  • N is the total number of bundles of carbon fiber bundles (1).
  • the ratio of the carbon fiber bundle (1) to the total weight of the carbon fiber bundle is obtained by the following mathematical formula.
  • a carding apparatus 1 for carding a carbon fiber bundle includes a cylinder roll 2, a take-in roll 3 provided on the upstream side in the vicinity of the outer peripheral surface, a take-in roll 3, Is provided near the outer peripheral surface of the cylinder roll 2 between the take-in roll 3 and the doffer roll 4 between the doffer roll 4 provided near the outer peripheral surface of the cylinder roll 2 on the opposite downstream side.
  • a plurality of worker rolls 5, a stripper roll 6 provided in the vicinity of the worker roll 5, a feed roll 7 and a belt conveyor 8 provided in the vicinity of the take-in roll 3 are mainly configured.
  • a carbon fiber bundle 9 cut to a predetermined length is supplied to the belt conveyor 8, and the carbon fiber bundle 9 is introduced onto the outer peripheral surface of the cylinder roll 2 through the outer peripheral surface of the feed roll and then the outer peripheral surface of the take-in roll 3.
  • the Up to this stage, the carbon fiber bundles are solved to some extent to form an aggregate of carbon-like carbon fiber bundles (carbon fiber aggregate).
  • a part of the aggregate of cotton-like carbon fiber bundles introduced on the outer peripheral surface of the cylinder roll 2 is wound around the outer peripheral surface of the worker roll 5, and this carbon fiber is peeled off by the stripper roll 6 and again the cylinder roll. 2 is returned to the outer peripheral surface.
  • a large number of needles and protrusions are present on the outer peripheral surface of each of the feed roll 7, the take-up roll 3, the cylinder roll 2, the worker roll 5 and the stripper roll 6, and the carbon fiber is
  • the bundle is opened to a predetermined bundle by the action of the needle and oriented to some extent.
  • a predetermined carbon fiber bundle is opened and moved to the outer peripheral surface of the doffer roll 4 as a sheet-like web 10 which is one form of a carbon fiber aggregate, whereby a desired sheet-like web 10 is obtained. Is obtained.
  • Airlaid is a method for producing a nonwoven sheet of short fibers.
  • General airlaid methods include the Honshu Paper Manufacturing Method, Cloyer Method, Dunweb Method, J & J Method, KC Method, Scott Method, etc. reference).
  • the airlaid device 11 includes a cylindrical drum 12 having a fine hole that rotates in reverse to each other and a pin cylinder 13 installed in each drum 12, and a carbon fiber together with a large amount of air.
  • a single bundle or a carbon fiber bundle and a thermoplastic resin fiber are blown to the drum 12, opened by the pin cylinder 13 in the drum 12, discharged from the pores, and dropped onto the wire 14 that travels thereunder.
  • air used for air blowing is sucked into a suction box 15 installed under the wire 14, and the opened carbon fiber bundle alone or the opened carbon fiber bundle and the thermoplastic resin fiber remains on the wire 4.
  • Carbon fiber bundle (A) Carbon fiber in which 1.0% by weight of a sizing agent mainly composed of bisphenol A ethylene oxide adduct is attached to a carbon fiber bundle with a continuous carbon fiber bundle having a fiber diameter of 7 ⁇ m, a tensile modulus of 230 GPa, and a filament number of 12,000. A bundle (A) was obtained.
  • Carbon fiber bundle (D) A carbon fiber bundle (D) was obtained without applying a sizing agent to a continuous carbon fiber bundle having a fiber diameter of 7 ⁇ m, a tensile modulus of 230 GPa, and a filament number of 12,000.
  • DMF diluting glycerol triglycidyl ether with dimethylformamide
  • Example 1 The carbon fiber bundle (A) was cut to a fiber length of 50 mm and put into a carding apparatus as shown in FIG.
  • the sheet that came out was directly wound to form an anisotropic discontinuous fiber web having a basis weight of 8.5 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 2.27.
  • the web was wound at 0 °, and eight carbon fiber webs were laminated so as to be (0 ° / + 45 / ⁇ 45 ° / 90 °) s. This was stacked as 12 units for one unit, and joined with nylon stitch yarn to obtain a quasi-isotropic laminated carbon fiber mat.
  • the number average x of the number of carbon fibers constituting the bundle was 160, and the standard deviation ⁇ was 61.
  • Example 2 The carbon fiber bundle (A) is cut to a fiber length of 50 mm, put into a carding apparatus as shown in FIG. 3, and cross-wrapped so that 13 layers of 8.5 g / m 2 of web are overlapped. The resulting sheet was wound up to form an anisotropic discontinuous fiber web.
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 2.27.
  • the web winding direction is set to 0 °, and the carbon fiber web is laminated so as to be 8 steps (0 ° / + 45 / ⁇ 45 ° / 90 °) s, and bonded with nylon stitch yarns, and isotropically laminated. A carbon fiber mat was obtained.
  • the obtained carbon fiber mat was impregnated with a thermoplastic resin by hot pressing in the same manner as in Example 1 to obtain a carbon fiber composite material flat plate having a thickness of 2.5 mm.
  • the fluidity was 215% and the fluidity was excellent.
  • the tensile test and bending test of the flat plate were carried out, the results shown in Table 1 were obtained, the tensile modulus ratio was 1.10, the flexural modulus ratio was 1.24, and the mechanical properties were Was highly isotropic.
  • the number average x of the number of carbon fibers constituting the bundle was 150, and the standard deviation ⁇ was 59.
  • Example 3 The carbon fiber bundle (A) was cut into a fiber length of 15 mm and put into a carding apparatus as shown in FIG. The sheet that came out was directly wound up to form an anisotropic discontinuous fiber web having a basis weight of 17 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.53.
  • the web was wound in a winding direction of 0 °, and two carbon fiber webs were laminated so as to be (0 ° / 90 °) s. This was stacked as a unit for 24 stages, and bonded with nylon stitch yarns to obtain a pseudo isotropic laminated carbon fiber mat.
  • the obtained carbon fiber mat was impregnated with a thermoplastic resin by hot pressing in the same manner as in Example 1 to obtain a carbon fiber composite material flat plate having a thickness of 2.5 mm.
  • the fluidity was 250%, which was excellent in fluidity.
  • the tensile test and the bending test of the flat plate were carried out, the results shown in Table 1 were obtained, the tensile modulus ratio was 1.08, the flexural modulus ratio was 1.53, and the mechanical properties. Was highly isotropic.
  • the number average x of the number of carbon fibers constituting the bundle was 168, and the standard deviation ⁇ was 62.
  • Example 4 The carbon fiber bundle (B) was cut into a fiber length of 25 mm and put into a carding apparatus as shown in FIG. The sheet that came out was directly wound up to form an anisotropic discontinuous fiber web having a basis weight of 26 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.05.
  • the web was wound at 0 °, and four carbon fiber webs were laminated so as to be (0 ° / + 45 / ⁇ 45 ° / 90 °) s. This was stacked as a unit in five stages, and carbon fibers mated with a needle punch and joined to obtain a carbon fiber mat that was quasi-isotropically laminated.
  • the number average x of the number of carbon fibers constituting the bundle was 324, and the standard deviation ⁇ was 240.
  • Example 5 The carbon fiber bundle (C) was cut into a fiber length of 10 mm and put into a carding apparatus as shown in FIG. The sheet that came out was directly wound to form an anisotropic discontinuous fiber web having a basis weight of 8.5 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.67.
  • the web was wound at 0 °, and the carbon fiber web was laminated so that eight carbon fiber webs were (0 ° / + 45 / ⁇ 45 ° / 90 °) s. This was stacked as 12 units for one unit, and bonded by adhesion with a thermoplastic tackifier to obtain a quasi-isotropic laminated carbon fiber mat.
  • the number average x of the number of carbon fibers constituting the bundle was 372, and the standard deviation ⁇ was 190.
  • Example 6 The carbon fiber bundle (D) was cut into a fiber length of 50 mm and put into a carding apparatus as shown in FIG. The sheet that came out was directly wound to form an anisotropic discontinuous fiber web having a basis weight of 8.5 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 2.98.
  • the web was wound at 0 °, and eight carbon fiber webs were laminated so as to be (0 ° / + 45 / ⁇ 45 ° / 90 °) s. This was stacked as 12 units for one unit, and joined with a polypropylene stitch yarn to obtain a pseudo isotropic laminated carbon fiber mat.
  • the number average x of the number of carbon fibers constituting the bundle was 510, and the standard deviation ⁇ was 354.
  • Example 7 The carbon fiber bundle (E) was cut to a fiber length of 15 mm, and the cut carbon fiber bundle and polyamide (nylon 6) short fibers (long fibers having a single fiber fineness of 1.7 dtex and a cut length of 5 mm) were used in a mass ratio of 90. : 10 and the mixture was put into an airlaid apparatus as shown in FIG. 4 to form a sheet-like carbon fiber aggregate having a basis weight of 10 g / m 2 made of carbon fiber and nylon 6 fiber.
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.25.
  • the winding direction of the sheet-like carbon fiber aggregate was 0 °, and 12 carbon fiber aggregates were laminated so as to be (0 ° / 90 ° / 0 ° / 90 ° / 0 ° / 90 °) s. .
  • the carbon fiber mat was obtained by stacking 10 units as a unit, and joining the polyamide (nylon 6) short fibers in the web by heat-sealing at 220 ° C. to form a pseudo isotropic laminate.
  • a nylon 610 resin film (“CM2001” manufactured by Toray Industries, Inc.) was further laminated so that the volume ratio of the obtained carbon fiber mat and the thermoplastic resin was 25:75, and the whole was sandwiched between stainless steel plates at 240 ° C.
  • the number average x of the number of carbon fibers constituting the bundle was 375, and the standard deviation ⁇ was 295.
  • Example 8 A sheet-like carbon fiber aggregate was formed in the same manner as in Example 7 except that the carbon fiber bundle (E) was cut to a fiber length of 25 mm.
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.32.
  • a carbon fiber composite material flat plate having a thickness of 2 mm was obtained from the carbon fiber mat. When the flow test of the obtained flat plate was carried out, the fluidity was 276% and the fluidity was excellent.
  • the number average x of the number of carbon fibers constituting the bundle was 420, and the standard deviation ⁇ was 365.
  • the carbon fiber bundle (A) was cut to a fiber length of 50 mm and put into a carding apparatus as shown in FIG.
  • the sheet that came out was directly wound to form an anisotropic discontinuous fiber web having a basis weight of 8.5 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 2.27.
  • the winding direction of this web was set to 0 °, and eight carbon fiber webs were stacked and stacked only in the 0 ° direction. This was stacked as 12 units for one unit and joined with nylon stitch yarn to obtain a carbon fiber mat.
  • the obtained carbon fiber mat was impregnated with a thermoplastic resin by a press in the same manner as in Example 1 to obtain a carbon fiber composite material flat plate having a thickness of 2.5 mm.
  • the fluidity was 165%, which was inferior in fluidity.
  • the tensile modulus ratio was 1.89, and the flexural modulus ratio was 2.15. In other words, the mechanical properties were less isotropic than the examples.
  • the number average x of the number of carbon fibers constituting the bundle was 162, and the standard deviation ⁇ was 63.
  • the carbon fiber bundle (B) was cut into a fiber length of 25 mm and put into a carding apparatus as shown in FIG.
  • the sheet that came out was directly wound to form an anisotropic discontinuous fiber web having a basis weight of 8.5 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.05.
  • the web was wound at 0 °, and eight carbon fiber webs were laminated so as to be (0 ° / + 45 / ⁇ 45 ° / 90 °) s. By simply stacking 12 units as one unit, a carbon fiber mat that was quasi-isotropically laminated without joining was obtained.
  • the obtained carbon fiber mat was impregnated with a thermoplastic resin by a press in the same manner as in Example 5 to obtain a carbon fiber composite material flat plate having a thickness of 2.5 mm.
  • the fluidity was 220%, which was excellent in fluidity.
  • the web was not bonded, so the web was displaced when it was made into a carbon fiber composite material with a press.
  • the tensile modulus ratio is 1.41
  • the bending modulus ratio is 1.31
  • the mechanical properties areotropic was lower than that of the example.
  • the number average x of the number of carbon fibers constituting the bundle was 320, and the standard deviation ⁇ was 235.
  • the carbon fiber bundle (A) was cut into a fiber length of 15 mm and put into a carding apparatus as shown in FIG.
  • the sheet that came out was directly wound to form an anisotropic discontinuous fiber web having a basis weight of 8.5 g / m 2 .
  • the background anisotropy of the carbon fibers in this anisotropic discontinuous fiber web was 1: 1.53.
  • the web was wound in a winding direction of 0 °, and three carbon fiber webs were laminated so as to be 0 ° / + 45/90 °. This was stacked as 25 units as a unit and joined with nylon stitch yarns to obtain a carbon fiber mat.
  • a carbon fiber composite material flat plate having a thickness of 2.5 mm was obtained under the same molding conditions as in Example 1 so that the volume ratio of the obtained carbon fiber mat to the thermoplastic resin was 30:70.
  • the fluidity was 170%, which was inferior in fluidity.
  • the tensile test and bending test of the flat plate were carried out, as shown in Table 1, the tensile modulus ratio was 1.16 and the flexural modulus ratio was 1.73. As a result, the mechanical properties were less isotropic than the examples.
  • the number average x of the number of carbon fibers constituting the bundle was 170, and the standard deviation ⁇ was 65.
  • the present invention is particularly suitable for applications in which molding into a relatively complicated shape is performed by press molding of a carbon fiber composite material, such as automobile members, aircraft members, industrial members, and the like.

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Abstract

Cette invention concerne un mat en fibre de carbone caractérisé en ce qu'il est obtenu par empilement d'une pluralité de feuilles de type nappe de fibres discontinues anisotropes qui comprennent des fibres de carbone ayant une longueur de fibres de 5 à 100 mm et un grammage de 5 à 50 g/m2 par feuille et solidarisation de la pile de façon à ce que le stratifié obtenu manifeste une quasi-isotropie ; un composite à base de mats en fibre de carbone comprenant lesdits mats en fibre de carbone et un matériau composite en fibre de carbone obtenu à l'aide desdits mats en fibres de carbone. Le mat en fibre de carbone et le composite en fibre de carbone selon l'invention permettent d'obtenir une aptitude à l'écoulement élevée lors du moulage, et les articles moulés obtenus ont des propriétés mécaniques satisfaisantes, lesdites propriétés mécaniques présentant une isotropie élevée dans les sens de la largeur et de la longueur.
PCT/JP2013/066300 2012-06-18 2013-06-13 Mat en fibre en carbone et matériau composite en fibre de carbone l'utilisant WO2013191073A1 (fr)

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WO2014156760A1 (fr) * 2013-03-26 2014-10-02 東レ株式会社 Non-tissé de fibres de carbone
JPWO2017078142A1 (ja) * 2015-11-05 2017-11-02 三菱ケミカル株式会社 連続炭素繊維束、シートモールディングコンパウンドおよびそれを用いて成形する繊維強化複合材料
JP2021172012A (ja) * 2020-04-24 2021-11-01 双葉電子工業株式会社 炭素繊維強化プラスチック板、加工品および炭素繊維強化プラスチック板の製造方法
US20220145025A1 (en) * 2019-03-28 2022-05-12 Toray Industries, Inc. Molded article of carbon fiber composite material and production method for molded article of carbon fiber composite material

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JP2006077343A (ja) * 2004-09-08 2006-03-23 Toray Ind Inc 炭素繊維マットおよびその製造方法、それを用いた成形用基材
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JP2009019202A (ja) * 2007-06-12 2009-01-29 Toray Ind Inc 成形材料、プリフォームおよび繊維強化樹脂
WO2011101094A1 (fr) * 2010-02-17 2011-08-25 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Procédé de fabrication d'un produit semi-fini en forme de plaque constitué d'un matériau composite fibreux

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JP2004043985A (ja) * 2002-07-09 2004-02-12 Yuuhou:Kk 不織布およびシート状成形材料の製造方法
JP2006077343A (ja) * 2004-09-08 2006-03-23 Toray Ind Inc 炭素繊維マットおよびその製造方法、それを用いた成形用基材
JP2008174605A (ja) * 2007-01-17 2008-07-31 Toray Ind Inc 繊維強化樹脂
JP2009019202A (ja) * 2007-06-12 2009-01-29 Toray Ind Inc 成形材料、プリフォームおよび繊維強化樹脂
WO2011101094A1 (fr) * 2010-02-17 2011-08-25 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Procédé de fabrication d'un produit semi-fini en forme de plaque constitué d'un matériau composite fibreux

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WO2014156760A1 (fr) * 2013-03-26 2014-10-02 東レ株式会社 Non-tissé de fibres de carbone
JPWO2017078142A1 (ja) * 2015-11-05 2017-11-02 三菱ケミカル株式会社 連続炭素繊維束、シートモールディングコンパウンドおよびそれを用いて成形する繊維強化複合材料
US20220145025A1 (en) * 2019-03-28 2022-05-12 Toray Industries, Inc. Molded article of carbon fiber composite material and production method for molded article of carbon fiber composite material
US11993688B2 (en) * 2019-03-28 2024-05-28 Toray Industries, Inc. Molded article of carbon fiber composite material and production method for molded article of carbon fiber composite material
JP2021172012A (ja) * 2020-04-24 2021-11-01 双葉電子工業株式会社 炭素繊維強化プラスチック板、加工品および炭素繊維強化プラスチック板の製造方法

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