WO2020040121A1 - 繊維強化熱可塑性樹脂基材およびそれを用いた積層品 - Google Patents
繊維強化熱可塑性樹脂基材およびそれを用いた積層品 Download PDFInfo
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- WO2020040121A1 WO2020040121A1 PCT/JP2019/032395 JP2019032395W WO2020040121A1 WO 2020040121 A1 WO2020040121 A1 WO 2020040121A1 JP 2019032395 W JP2019032395 W JP 2019032395W WO 2020040121 A1 WO2020040121 A1 WO 2020040121A1
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- 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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/243—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using carbon fibres
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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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
- B32B5/02—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
- B32B5/06—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 a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
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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
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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
- B32B5/28—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 impregnated with or embedded in a plastic substance
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
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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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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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
- 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
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/16—Structural features of fibres, filaments or yarns e.g. wrapped, coiled, crimped or covered
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- 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
- C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2371/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08J2371/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
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- 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
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- 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
- C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2381/06—Polysulfones; Polyethersulfones
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- 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
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- C08J2481/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2481/04—Polysulfides
Definitions
- the present invention relates to a fiber-reinforced thermoplastic resin base material and a laminate using the same.
- Fiber reinforced thermoplastic resin base material made by impregnating thermoplastic resin into continuous reinforcing fiber is excellent in specific strength, specific rigidity, high weight reduction effect, heat resistance, chemical resistance, aircraft, It is preferably used for various applications such as transportation equipment such as automobiles, sports, and electric / electronic parts.
- transportation equipment such as automobiles, sports, and electric / electronic parts.
- Patent Document 1 discloses a method in which a resin is adhered to the outer surface of a reinforcing fiber base formed of expanded fibers and heated to a temperature equal to or higher than the melting point of the resin. A fiber-reinforced resin intermediate in which the resin is impregnated into the reinforcing fiber base has been proposed.
- Patent Document 2 discloses that a thermoplastic resin nonwoven fabric in which thermoplastic resin fibers are woven in a non-woven state is superimposed on a reinforcing fiber sheet in which a plurality of reinforcing fiber bundles are aligned in one direction, and pressure is applied while heating.
- a fiber-reinforced thermoplastic resin sheet is proposed in which a thermoplastic resin non-woven fabric is melted and impregnated with a thermoplastic resin in a reinforcing fiber bundle in a state in which a void portion is present, thereby forming a semi-preg state of the thermoplastic resin.
- the fiber-reinforced thermoplastic resin sheet is semi-impregnated, the time required for manufacturing the fiber-reinforced thermoplastic resin sheet can be reduced, and it is flexible and, in addition, it is semi-impregnated as a fiber-reinforced thermoplastic resin sheet. It can be said that since the reinforcing fiber sheet can be made thinner, the unimpregnated portion can be reduced, and the impregnation can be completed sufficiently when pressurizing while heating during processing into a final molded product.
- Patent Literature 1 Although the shape is improved due to the presence of the voids opened to the outside, the resin is unevenly arranged due to the openings outside, so that the resin-rich portion is formed at the time of molding. Tends to occur. In addition, there is a concern that the handling property may be deteriorated such as cracking of the reinforcing fiber bundle or displacement during lamination.
- the fiber-reinforced thermoplastic resin sheet described in Patent Literature 2 is formed by applying pressure while heating a fabric made of thermoplastic resin fibers stacked on the fiber-reinforced sheet. For this reason, in this fiber-reinforced thermoplastic resin sheet, the molten thermoplastic resin layer is pressurized and consolidated, so that although a gap is partially formed, the impregnation is easy to proceed and the impregnated portion and the gap portion are formed. Since it is in a mixed state, there is a problem that it is difficult for air in the reinforcing fiber sheet to escape and a void is easily formed in a molded product.
- an object of the present invention is to provide a fiber-reinforced thermoplastic resin base material having a thermoplastic resin as a matrix, with the thermoplastic resin covering the surface of the base material of the reinforcing fiber with high uniformity, and the matrix resin is applied to the reinforcing fiber base material.
- An object of the present invention is to provide a fiber-reinforced thermoplastic resin base material having high shapeability and handleability by being uniformly impregnated while leaving voids.
- a fiber-reinforced thermoplastic resin substrate comprising a continuous fiber substrate composed of continuous reinforcing fibers and a thermoplastic resin applied to the surface thereof, wherein the thermoplastic resin is formed on the entire surface of the continuous fiber substrate.
- a fiber-reinforced thermoplastic resin base material which is coated in a solidified state and is impregnated in a continuous fiber base material while leaving voids, wherein the voids are formed intermittently in the fiber orientation direction.
- thermoplastic resin substrate according to [1], wherein the impregnation distance is 20 ⁇ m to 60 ⁇ m and 20% to 80% of the thickness of the fiber-reinforced thermoplastic resin substrate.
- the thermoplastic resin is a polyphenylene sulfide resin (PPS), a polyarylene ether One thermoplastic resin or two or more resins selected from ketone resin (PAEK), polyetherketoneketone resin (PEKK), polyethersulfone resin (PES), polyetherimide (PEI), and liquid crystal polymer (LCP)
- PPS polyphenylene sulfide resin
- PPS polyarylene ether
- the polymer alloy contains a biphasic continuous structure having a structural period of 0.001 to 10 ⁇ m or a polymer alloy which forms a sea-island structure composed of an island phase having a particle diameter of 0.001 to 10 ⁇ m and a sea phase.
- the fiber-reinforced thermoplastic resin substrate according to [4] or [5].
- thermoplastic resin substrate according to any one of [1] to [12] or the molded article according to [12], and a metal material or a molded article thereof, or a resin material or a molded article thereof.
- the surface of the continuous fiber base material is coated with a thermoplastic resin with high uniformity, and is impregnated with a matrix resin while leaving continuous voids in the fiber direction, thereby having high handleability and shapeability.
- a fiber reinforced thermoplastic resin substrate is obtained.
- the fiber-reinforced thermoplastic resin base material according to the present invention is a continuous fiber base material made of continuous reinforcing fibers, and a fiber-reinforced thermoplastic resin base material made of a thermoplastic resin applied to the surface thereof, The plastic resin is coated in a state where the entire surface of the continuous fiber base material is solidified, and is impregnated in a state where a gap is left in the continuous fiber base material, and the gap is formed intermittently in a fiber orientation direction. It is.
- continuous fiber substrate made of continuous reinforcing fibers refers to a fiber-reinforced thermoplastic resin substrate in which the reinforcing fibers are not interrupted.
- examples of the form and arrangement of the continuous fiber base material in the present invention include those in which continuous reinforcing fibers are aligned in one direction, woven fabric (cloth), knitted fabric, braid, tow, and the like. Among them, those in which the reinforcing fibers are arranged in one direction are preferable because the mechanical properties in a specific direction can be efficiently enhanced.
- the type of reinforcing fiber is not particularly limited, and examples thereof include carbon fiber, metal fiber, organic fiber, and inorganic fiber. Two or more of these may be used.
- carbon fibers as the reinforcing fibers, a fiber-reinforced thermoplastic resin base material having high mechanical properties while being lightweight can be obtained.
- the carbon fiber examples include PAN-based carbon fiber made from polyacrylonitrile (PAN) fiber, pitch-based carbon fiber made from petroleum tar and oil pitch, and cellulosic carbon made from viscose rayon and cellulose acetate. Vapor-grown carbon fibers made from fibers, hydrocarbons and the like, and graphitized fibers thereof. Among these carbon fibers, PAN-based carbon fibers are preferably used because they have an excellent balance between strength and elastic modulus.
- PAN-based carbon fibers are preferably used because they have an excellent balance between strength and elastic modulus.
- metal fibers examples include fibers made of metal such as iron, gold, silver, copper, aluminum, brass, and stainless steel.
- Examples of the organic fibers include fibers made of organic materials such as aramid, polybenzoxazole (PBO), polyphenylene sulfide, polyester, polyamide, and polyethylene.
- Examples of the aramid fiber include a para-aramid fiber excellent in strength and elastic modulus and a meta-aramid fiber excellent in flame retardancy and long-term heat resistance.
- Examples of the para-aramid fiber include polyparaphenylene terephthalamide fiber and copolyparaphenylene-3,4'-oxydiphenylene terephthalamide fiber, and examples of the meta-aramid fiber include polymetaphenylene isophthalamide fiber. Is mentioned.
- As the aramid fiber a para-aramid fiber having a higher elastic modulus than a meta-aramid fiber is preferably used.
- the inorganic fibers include fibers made of inorganic materials such as glass, basalt, silicon carbide, and silicon nitride.
- the glass fiber include E glass fiber (for electric use), C glass fiber (for corrosion resistance), S glass fiber, and T glass fiber (high strength and high elastic modulus).
- Basalt fiber is a fiber made of basalt, which is a mineral, and has extremely high heat resistance.
- Basalt generally the FeO or FeO 2 is a compound of iron 9-25% by weight, but containing TiO or TiO 2 which is a compound of titanium 1-6% by weight, increase of these components in the molten state It is also possible to make the fibers.
- the fiber-reinforced thermoplastic resin base material according to the present invention is often expected to serve as a reinforcing material, it is desirable to express high mechanical properties, and in order to express high mechanical properties, as a reinforcing fiber, It is preferable to include carbon fibers.
- the continuous fiber base material is usually constituted by arranging one or more reinforcing fiber bundles in which many single fibers are bundled.
- the total number of filaments (the number of single fibers) per reinforcing fiber bundle is preferably 1,000 to 2,000,000. From the viewpoint of productivity, the total number of reinforcing fibers is preferably 1,000 to 1,000,000, more preferably 1,000 to 600,000, and 1,000 to 300,000. Particularly preferred.
- the upper limit of the total number of filaments per reinforcing fiber bundle may be determined in consideration of the balance between dispersibility and handleability so as to maintain good productivity, dispersibility, and handleability.
- a single reinforcing fiber bundle is formed by bundling 1,000 to 50,000 single fibers of reinforcing fibers having an average diameter of preferably 5 to 10 ⁇ m.
- thermoplastic resin used in the present invention examples include polyethylene terephthalate (PET) resin, polybutylene terephthalate (PBT) resin, polytrimethylene terephthalate (PTT) resin, polyethylene naphthalate (PEN) resin, and liquid crystal polyester resin.
- Polyester such as polyester, polyethylene (PE) resin, polypropylene (PP) resin, polybutylene resin, styrene resin, polyoxymethylene (POM) resin, polyamide (PA) resin, polycarbonate (PC) resin, poly Methylene methacrylate (PMMA) resin, polyvinyl chloride (PVC) resin, polyphenylene sulfide (PPS) resin, polyphenylene ether (PPE) resin, modified PPE resin, polyimide (PI) resin, polyamideimi (PAI) resin, polyetherimide (PEI) resin, polysulfone (PSU) resin, modified PSU resin, polyethersulfone resin, polyketone (PK) resin, polyarylene etherketone resin (PAEK), polyarylate (PAR) resin, Fluorine resins such as polyethernitrile (PEN) resin, phenolic resin, phenoxy resin and polytetrafluoroethylene resin, as well as polystyrene resin, polyolefin resin, poly
- the polymer alloy is made of polyphenylene sulfide resin (PPS), polyarylene ether ketone resin (PAEK), polyether sulfone resin (PES), polyetherimide (PEI), liquid crystal polymer (LCP) And a polymer alloy obtained by combining two or more of the above resins is more preferable.
- PPS polyphenylene sulfide resin
- PAEK polyarylene ether ketone resin
- PES polyether sulfone resin
- PEI polyetherimide
- LCP liquid crystal polymer
- PAEK polyarylene ether ketone resin
- PEEK polyether ketone
- PEEK polyether ether ketone
- PEEKK polyether ether ketone ketone
- PEKK polyether ketone ketone
- PEEK polyether ketone ether
- PEEEK polyether diphenyl ether ketone
- copolymers, modified bodies, and blends of two or more thereof Resin or the like may be used.
- the polymer alloy forms a biphasic continuous structure having a structural period of 0.001 to 10 ⁇ m, or the polymer alloy forms a sea-island structure including an island phase having a particle diameter of 0.001 to 10 ⁇ m and a sea phase.
- High mechanical properties and heat resistance can be achieved by controlling the structure to have a biphasic continuous structure in the range of 0.001 ⁇ m to 10 ⁇ m or a sea-island structure composed of an island phase and a sea phase having a particle size in the range of 0.001 to 1 ⁇ m.
- a biphasic continuous structure in the range of 0.01 ⁇ m to 5 ⁇ m, or a sea-island structure composed of an island phase and a sea phase having a particle size in the range of 0.01 to 5 ⁇ m, and both in the range of 0.1 ⁇ m to 1 ⁇ m.
- the phase continuity structure or the particle diameter in the range of 0.05 to 1 ⁇ m is more preferable.
- thermoplastic resins for example, (i) a combination of a biphasic continuous structure and a sea-island structure, (ii) a combination of different types of biphasic continuous structures, and (iii) Various structures such as a continuous structure of a plurality of phases composed of three or more resins can be appropriately combined.
- the scattering maxima in scattering measurements performed using a small-angle X-ray scattering device or light scattering device Confirmation of appearance is necessary.
- the existence of a scattering maximum in this scattering measurement is a proof that a regular phase-separated structure having a certain period is present.
- the period ⁇ m (nm) corresponds to the structural period in the case of a biphasic continuous structure, and in the case of a dispersed structure Corresponds to the distance between particles.
- Equation 1 The value can be calculated by (Equation 1) using the wavelength ⁇ (nm) of the scattered light in the scatterer and the scattering angle ⁇ m (°) that gives the maximum scattering.
- the uniformity of the structural period in the biphasic continuous structure of the polymer alloy or the uniformity of the interparticle distance in the dispersed structure is important. This uniformity can be evaluated by the above-mentioned small angle X-ray scattering measurement or light scattering measurement of the polymer alloy.
- the size of the phase separation structure that can be analyzed is different. Therefore, it is necessary to appropriately use the phase separation structure size according to the size of the phase separation structure of the polymer alloy to be analyzed.
- the small-angle X-ray scattering measurement and the light scattering measurement in addition to the structure period in the biphasic continuous structure or the size of the interparticle distance in the dispersed structure, information on the distribution thereof can be obtained.
- the peak position of the scattering maximum in the spectrum obtained by these measurements that is, the scattering angle ⁇ m (°) corresponds to the structure period in the biphasic continuous structure or the size of the distance between particles in the dispersed structure, and the peak spread.
- the scattering spectrum obtained by small-angle X-ray scattering measurement or light scattering measurement has a maximum value. It is characterized by.
- the fiber-reinforced thermoplastic resin base material according to the present invention is obtained by impregnating a continuous fiber base material with the above-mentioned thermoplastic resin in a state where voids are left. It may contain a polymer, various additives and the like.
- any one generally used as a resin filler can be used, which further improves the strength, rigidity, heat resistance, and dimensional stability of a fiber-reinforced thermoplastic resin base material and a molded product using the same. be able to.
- the filler include glass fiber, carbon fiber, potassium titanate whisker, zinc oxide whisker, aluminum borate whisker, aramid fiber, alumina fiber, silicon carbide fiber, ceramic fiber, asbestos fiber, stone fiber, metal fiber, and the like.
- Fibrous inorganic filler wollastenite, zeolite, sericite, kaolin, mica, talc, clay, pyrophyllite, bentonite, montmorillonite, asbestos, aluminosilicate, alumina, silicon oxide, magnesium oxide, zirconium oxide, titanium oxide, oxide Iron, calcium carbonate, magnesium carbonate, dolomite, calcium sulfate, barium sulfate, magnesium hydroxide, calcium hydroxide, aluminum hydroxide, glass beads, ceramic beads, boron nitride, silicon carbide, silica, etc.
- the fibrous filler is made of discontinuous fibers, the function can be provided without impairing the reinforcing effect of the reinforcing fibers made of continuous fibers.
- polymers include, for example, polyolefins such as polyethylene and polypropylene, elastomers such as polyamide elastomers and polyester elastomers, polyesters, polycarbonates, polyphenylene ethers, polyphenylene sulfides, liquid crystal polymers, polysulfones, polyether sulfones, ABS resins, and SAN resins. Resins, polystyrene and the like can be mentioned. Two or more of these may be contained.
- polyolefins such as polyethylene and polypropylene
- elastomers such as polyamide elastomers and polyester elastomers
- polyesters polycarbonates
- polyphenylene ethers polyphenylene sulfides
- liquid crystal polymers polysulfones, polyether sulfones, ABS resins, and SAN resins.
- Resins, polystyrene and the like can be mentioned. Two or more of these may be contained.
- a modified polyolefin such as a (co) polymer of an olefin compound and / or a conjugated diene compound, a polyamide elastomer Impact modifiers such as polyester elastomers are preferably used.
- Examples of the (co) polymer of the olefinic compound and / or the conjugated diene compound include an ethylene-based copolymer, a conjugated diene-based polymer, and a conjugated diene-aromatic vinyl hydrocarbon-based copolymer.
- Examples of the ethylene-based copolymer include a copolymer of ethylene and an ⁇ -olefin having 3 or more carbon atoms, a non-conjugated diene, vinyl acetate, vinyl alcohol, ⁇ , ⁇ -unsaturated carboxylic acid and a derivative thereof.
- Examples of the ⁇ -olefin having 3 or more carbon atoms include propylene and butene-1.
- Non-conjugated dienes include, for example, 5-methylidene-2-norbornene, 5-ethylidene-2-norbornene, dicyclopentadiene, 1,4-hexadiene and the like.
- Examples of the ⁇ , ⁇ -unsaturated carboxylic acid include acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, and butenedicarboxylic acid.
- Examples of the derivatives of ⁇ , ⁇ -unsaturated carboxylic acids include alkyl esters, aryl esters, glycidyl esters, acid anhydrides, and imides of the aforementioned ⁇ , ⁇ -unsaturated carboxylic acids.
- the conjugated diene-based polymer refers to a polymer of at least one conjugated diene.
- the conjugated diene include 1,3-butadiene, isoprene (2-methyl-1,3-butadiene), 2,3-dimethyl-1,3-butadiene, and 1,3-pentadiene. Further, some or all of the unsaturated bonds of these polymers may be reduced by hydrogenation.
- the conjugated diene-aromatic vinyl hydrocarbon-based copolymer refers to a copolymer of a conjugated diene and an aromatic vinyl hydrocarbon, and may be a block copolymer or a random copolymer.
- the conjugated diene include 1,3-butadiene and isoprene.
- the aromatic vinyl hydrocarbon include styrene. Further, some or all of the unsaturated bonds other than the double bond other than the aromatic ring of the conjugated diene-aromatic vinyl hydrocarbon-based copolymer may be reduced by hydrogenation.
- impact modifiers include ethylene / methacrylic acid copolymers and those in which some or all of the carboxylic acid moieties in these copolymers are salts with sodium, lithium, potassium, zinc, calcium, Examples include an ethylene / propylene-g-maleic anhydride copolymer and an ethylene / butene-1-g-maleic anhydride copolymer.
- antioxidants and heat stabilizers hindered phenols, hydroquinones, phosphites and their substitutes, copper halides, iodine compounds, etc.
- weathering agents resorcinols, salicylates
- Benzotriazoles Benzotriazoles
- benzophenones hindered amines, etc.
- release agents and lubricants aliphatic alcohols, aliphatic amides, aliphatic bisamides, bisureas, polyethylene waxes, etc.
- pigments cadmium sulfide, phthalocyanine, carbon black, etc.
- Dyes eg, nigrosine, aniline black
- plasticizers eg, octyl p-oxybenzoate, N-butylbenzenesulfonamide
- antistatic agents eg, alkyl sulfate-type anionic antistatic agents, and quaternary ammonium salt-type cationic charges
- the fiber-reinforced thermoplastic resin base material according to the present invention can be obtained by impregnating a continuous fiber base material with a thermoplastic resin in a state where voids remain.
- Examples of the impregnation method include, for example, a method of melting a film-like thermoplastic resin and impregnating the reinforcing fiber bundle with the thermoplastic resin by applying pressure, after blending the fibrous thermoplastic resin and the reinforcing fiber bundle, The commingle method in which the fibrous thermoplastic resin is melted and impregnated with the thermoplastic resin in the reinforcing fiber bundle by applying pressure, after the powdery thermoplastic resin is dispersed in the interstices of the fibers in the reinforcing fiber bundle, the powdered A powder method in which a thermoplastic resin is melted and pressurized to impregnate the reinforcing fiber bundle with the thermoplastic resin. The reinforcing fiber bundle is immersed in the molten thermoplastic resin and then pressurized to impregnate the reinforcing fiber bundle with the thermoplastic resin.
- Drawing method The drawing method is preferable because various types of fiber-reinforced thermoplastic resin base materials having various thicknesses and fiber volume contents can be produced
- the fiber-reinforced thermoplastic resin base material according to the present invention may be formed by laminating two or more continuous fiber base materials and impregnating a thermoplastic resin between the surface and the interlayer. Laminating two or more continuous fiber substrates facilitates size adjustment.
- the fiber-reinforced thermoplastic resin base material it is preferable that 30% by volume or more and 70% by volume or less of the reinforcing fibers are contained in 100% by volume of the entire fiber-reinforced thermoplastic resin base material.
- the strength of a molded product obtained by using the fiber-reinforced thermoplastic resin base material can be further improved. 40 volume% or more is more preferable, and 50 volume% or more is still more preferable.
- the reinforcing fibers are contained at 70% by volume or less, the reinforcing fibers can be more easily impregnated with the thermoplastic resin. 65 volume% or less is more preferable, and 60 volume% or less is further preferable.
- the reinforcing fiber volume content Vf (volume%) of the fiber-reinforced thermoplastic resin substrate is measured by measuring the mass W0 (g) of the fiber-reinforced thermoplastic resin substrate, and then the fiber-reinforced thermoplastic resin substrate is cooled by air.
- the thermoplastic resin component was burned off by heating at a medium temperature of 500 ° C. for 30 minutes, and the mass W1 (g) of the remaining reinforcing fibers was measured and calculated by (Equation 2).
- Vf (volume%) (W1 / ⁇ f) / ⁇ W1 / ⁇ f + (W0 ⁇ W1) / ⁇ 1 ⁇ ⁇ 100 ⁇ f: density of reinforcing fiber (g / cm 3 ) ⁇ r: density of thermoplastic resin (g / cm 3 )
- voids are formed intermittently in the fiber orientation direction.
- the voids are formed intermittently in the fiber orientation direction, the drapability of the fiber-reinforced thermoplastic resin is improved.
- “intermittently” means not only that the voids are formed continuously in the fiber orientation direction, but also that some of the voids are locally filled with the thermoplastic resin, but the fiber-reinforced thermoplastic resin The whole material includes a state where voids are substantially connected.
- the fiber-reinforced thermoplastic resin substrate of the present invention preferably has a void content (void ratio) of 10% to 60% contained in the fiber-reinforced thermoplastic resin substrate.
- void ratio a void content of 10% to 60% contained in the fiber-reinforced thermoplastic resin substrate.
- the void ratio is 10% or more, the drapability of the fiber-reinforced thermoplastic resin is improved.
- the void ratio is 60% or less, cracks in the layer are reduced, and the handleability of the fiber-reinforced thermoplastic resin base material is improved.
- the void ratio of the fiber-reinforced thermoplastic resin substrate in the present invention was determined by observing a cross section in the thickness direction of the fiber-reinforced thermoplastic resin substrate as follows. A sample in which a fiber-reinforced thermoplastic resin substrate was embedded with an epoxy resin was prepared, and the sample was polished until a cross section in the thickness direction of the fiber-reinforced thermoplastic resin substrate could be observed well. The polished sample was photographed at a magnification of 400 times using an ultra-depth color 3D shape measuring microscope VHX-9500 (controller unit) / VHZ-100R (measuring unit) (manufactured by Keyence Corporation).
- VHX-9500 controller unit
- VHZ-100R measuring unit
- the photographing range was a range of thickness of fiber-reinforced thermoplastic resin substrate ⁇ width of 500 ⁇ m.
- the cross-sectional area of the base material and the area of the void (void) were determined, and the void ratio was calculated by (Equation 3).
- Void rate (%) (total area of site occupied by voids) / (total area of fiber-reinforced thermoplastic resin base material) ⁇ 100
- the continuous fiber base material is impregnated with the thermoplastic resin in an amount of 20 ⁇ m or more and 60 ⁇ m or less.
- the fiber-reinforced thermoplastic resin base material By impregnating the fiber-reinforced thermoplastic resin base material with 10 ⁇ m or more per side, cracks in the fiber layer are reduced, and the handleability of the fiber-reinforced thermoplastic resin can be improved.
- the impregnation distance per one side of the fiber reinforced thermoplastic resin base material is 30 ⁇ m or less, the drapability of the fiber reinforced thermoplastic resin base material can be improved.
- the impregnation distance is preferably 20% or more and 80% or less of the thickness of the fiber-reinforced thermoplastic resin base material.
- the impregnation distance is 20% or more of the thickness of the fiber-reinforced thermoplastic resin base material, cracks in the fibers are reduced, and the handleability of the fiber-reinforced thermoplastic resin can be improved.
- the impregnation distance is 80% or less of the thickness of the fiber-reinforced thermoplastic resin base material, the drape property of the fiber-reinforced thermoplastic resin base material can be improved.
- the impregnation distance of the fiber-reinforced thermoplastic resin substrate in the present invention was determined by observing a cross section in the thickness direction of the fiber-reinforced thermoplastic resin substrate as follows.
- a fiber-reinforced thermoplastic resin substrate as a sample is embedded in an epoxy resin “Epoquick” (registered trademark: manufactured by Bühler Co.), and cured at room temperature for 24 hours.
- Epoquick registered trademark: manufactured by Bühler Co.
- the orientation direction of the reinforcing fibers in the fiber-reinforced polymer alloy substrate Is polished, and then the polished surface is photographed with an ultra-depth color 3D shape measuring microscope VHX-9500 (controller) / VHZ-100R (manufactured by Keyence Corporation) while changing the position.
- the distance between fibers is measured on both sides of the fiber reinforced thermoplastic resin substrate. Since the impregnation is performed on both surfaces of the base material, twice the average value of the inter-fiber distances measured for 100 reinforcing fiber single yarns 3 is set as a representative value (impregnation distance).
- ⁇ In measuring the thickness of the fiber-reinforced thermoplastic resin substrate in the present invention, a temperature and a pressure higher than the melting point were applied to the fiber-reinforced thermoplastic resin substrate to completely impregnate the resin. The thickness was measured at five or more points, and the average value was used as a representative value.
- the fiber-reinforced thermoplastic resin substrate of the present invention has the entire surface of the continuous fiber substrate covered with the thermoplastic resin.
- the thermoplastic resin covers the entire continuous fiber base material, the thermoplastic resin is uniformly present on the surface of the base material, and handleability and shapeability can be improved.
- the alignment (straightness) of the reinforcing fibers is uniform in the fiber-reinforced thermoplastic resin substrate of the present invention.
- the alignment (straightness) can be evaluated by an arbitrary method such as a sectional observation method or an ultrasonic flaw detection method.
- the impregnation distance of the thermoplastic resin is preferably larger than the thickness of the thermoplastic resin tree forming the surface layer.
- the impregnation distance is larger than the thickness of the thermoplastic resin forming the surface layer, handleability and shapeability can be improved.
- the thickness of the thermoplastic resin forming the surface layer of the fiber-reinforced thermoplastic resin substrate in the present invention was determined by observing a cross section in the thickness direction of the fiber-reinforced thermoplastic resin substrate as follows.
- a fiber-reinforced thermoplastic resin substrate as a sample is embedded in an epoxy resin “Epoquick” (registered trademark: manufactured by Bühler Co.), and cured at room temperature for 24 hours.
- the orientation direction of the reinforcing fibers in the fiber-reinforced polymer alloy substrate Is polished, and then the polished surface is photographed with an ultra-depth color 3D shape measuring microscope VHX-9500 (controller) / VHZ-100R (manufactured by Keyence Corporation) while changing the position.
- the distance is measured on both sides of the fiber reinforced thermoplastic resin substrate. Since the impregnation is performed on both surfaces of the base material, twice the average value of the distance measured for 100 reinforcing fiber single yarns 3 is set as a representative value (the thickness of the thermoplastic resin tree forming the surface layer).
- a manufacturing apparatus for example, a creel portion capable of holding one or more bobbins wound with a reinforcing fiber bundle before impregnation with a matrix resin, a feed portion for continuously feeding a reinforcing fiber bundle from the creel portion, a continuous portion
- the molten matrix resin is adhered to the reinforcing fiber bundle sent out, and is impregnated by applying pressure, while an impregnation die for shaping into a predetermined shape, and the molten matrix resin is cooled and solidified to form a fiber-reinforced thermoplastic resin base. It is composed of a cooling roll for forming the material.
- the reinforcing fiber bundle continuously fed is heated to a temperature higher than the melting point or glass transition temperature of the thermoplastic resin, and the molten matrix resin is applied and impregnated.
- the continuously delivered reinforcing fiber bundle usually has a thin layered form.
- a plurality of bobbins around which a bundle of reinforcing fibers is wound by collecting 1,000 to 50,000 continuous monofilaments of reinforcing fibers are prepared.
- the reinforcing fiber bundle is made to enter into the impregnation die in which the molten matrix resin is stored through a plurality of yarn path guides.
- the layered reinforcing fiber bundle may be made to enter the impregnation die in a state of being laminated in two or more layers.
- the impregnation die provided in the manufacturing apparatus is configured to face the direction in which the reinforcing fiber bundle is transferred, and the matrix resin supplied from the feeder is stored in a molten state inside the impregnation die.
- an inlet hole through which the reinforcing fiber bundle can pass is formed, and through this inlet hole, the reinforcing fiber bundle passes through the inside of the impregnating die. Go into.
- the inside of the impregnating die has a structure in which the cross-sectional area decreases intermittently in the direction of fiber advancement. A slit-shaped nozzle having a smaller cross-sectional area is formed.
- the reinforcing fiber bundle is taken in the nozzle direction with the accompanying flow of the matrix resin, the pressure of the resin increases as approaching the nozzle direction, and the matrix resin is impregnated. It is also possible to introduce a plurality of reinforcing fiber bundles in the form of a single layer into an impregnation die for shaping to an arbitrary thickness, and to laminate the layers in a state where a matrix resin is attached and impregnated to each layer.
- the molten matrix resin By continuously pulling out the reinforcing fiber bundle impregnated with the molten matrix resin from the impregnation die, before the matrix resin impregnated into the reinforcing fiber bundle is solidified, it is shaped into a predetermined shape, and then, in a cooling and solidifying step, Then, the molten matrix resin is cooled and solidified to form a fiber-reinforced thermoplastic resin having a predetermined shape.
- a nozzle is provided at the outlet of the impregnating die, and the reinforcing fiber bundle that is pulled out by the take-off roll and impregnated with the matrix resin is shaped into a predetermined cross-sectional shape.
- the shaped reinforcing fiber bundle is cooled and solidified by passing through a cooling roll or a cooling mold through which cooling water is passed, whereby the fiber-reinforced thermoplastic resin base material having a fixed shape is formed. Is formed.
- the take-up tension of the reinforcing fiber bundle impregnated with the matrix resin is preferably 5 to 200 N, more preferably 5 to 150 N per 12,000 single fibers. If the take-up tension is less than 5N, the reinforcing fiber bundles are easily impregnated with the resin because the reinforcing fiber bundles are easily moved, thereby making it easy to overlap with the adjacent reinforcing fiber bundles or to form a gap between the adjacent fiber bundles. do not do. If it exceeds 200 N, the reinforcing fiber bundle converges, so that the impregnation property of the matrix resin decreases.
- the take-up tension can be appropriately adjusted according to the setting conditions of the preliminary tension and the transport speed. The take-up tension can be increased by increasing the transport speed. Further, the take-up tension can be appropriately adjusted by the shape and arrangement of the rolls.
- one or more fiber-reinforced thermoplastic resin substrates according to the present invention are laminated in an arbitrary configuration, and a part thereof is welded to obtain an integrated fiber-reinforced thermoplastic resin laminate.
- the layers may be stacked in any direction, such as UD stacking, 0 ° / 90 ° stacking, and quasi-isotropic stacking.
- the welding method includes a hot plate welding method in which a heated hot plate is pressed against the welded portion to melt and solidify the resin, a vibration welding method in which the resin that vibrates the welded portion is melted and solidified, and an ultrasonic vibration is applied to the welded portion to apply a matrix.
- An ultrasonic vibration method that melts the resin is exemplified.
- the ultrasonic welding method is preferable because it can cope with various sizes and can be efficiently heated.
- a molded article is obtained by laminating one or more sheets of the fiber-reinforced thermoplastic resin substrate according to the present invention in an optional configuration and then applying heat and / or pressure as necessary. .
- thermoplastic resin base material laminated in an arbitrary configuration in a mold or on a press plate, press molding in which the mold or the press plate is closed and pressed.
- the fiber-reinforced thermoplastic resin substrate of the present invention or a molded product thereof is excellent in productivity such as insert molding, integrated molding such as outsert molding, correction treatment by heating, heat welding, vibration welding, and ultrasonic welding. Integration using a bonding method or an adhesive can be performed, and a composite can be obtained.
- the molding substrate or its molded product integrated with the fiber-reinforced thermoplastic resin substrate of the present invention or its molded product for example, a resin material or its molded product, a metal material or its molded product, An inorganic material or a molded product thereof can be used.
- the resin material, the molded product thereof, the metal material, or the molded product thereof can effectively exert the reinforcing effect of the fiber-reinforced thermoplastic resin substrate according to the present invention.
- a resin material or a molded product thereof is preferable in terms of adhesive strength to a fiber-reinforced thermoplastic resin base material.
- a fiber-reinforced resin obtained by impregnating a matrix resin into a reinforcing fiber mat having a fiber length of 5 to 100 mm is suitable for molding and mechanical properties.
- high-tensile steel, an aluminum alloy, a titanium alloy, a magnesium alloy, or the like can be used, and may be selected according to the characteristics required for the metal layer, the metal member, and the metal component.
- the matrix resin of the molding material or the molded product thereof integrated with the fiber-reinforced thermoplastic resin substrate of the present invention may be the same type of resin as the fiber-reinforced thermoplastic resin substrate or the molded product thereof, It may be a resin. In order to further increase the adhesive strength, it is preferable that the resins are of the same type. In the case of different kinds of resins, it is more preferable to provide a resin layer at the interface.
- the fiber-reinforced thermoplastic resin substrate of the present invention or a molded article thereof is used for various purposes such as aircraft parts, automobile parts, electric / electronic parts, building members, various containers, daily necessities, household goods and sanitary goods, by utilizing its excellent properties.
- the fiber-reinforced polymer alloy base material or the molded product thereof according to the present invention is, inter alia, an aircraft engine peripheral part where stable mechanical properties are required, an exterior part of an aircraft part, a vehicle skeleton as an automobile body part, an automobile engine peripheral part, It is particularly preferably used for automobile underhood parts, automobile gear parts, automobile interior parts, automobile exterior parts, intake / exhaust system parts, engine cooling water system parts, automobile electric parts, and electric / electronic parts.
- the fiber-reinforced thermoplastic resin base material or the molded product thereof according to the present invention includes aircraft engine peripheral parts such as fan blades, landing gear pods, winglets, spoilers, edges, ladders, elevators, failings, ribs and the like.
- Aircraft related parts various seats, front body, underbody, various pillars, various members, various frames, various beams, various supports, various rails, various kinds of automobile body parts such as hinges, engine covers, air intake pipes, timing belt covers , Intake manifold, Filler cap, Throttle body, Cooling fan and other peripheral parts of the automobile engine, Cooling fan, Radiator tank top and base, Cylinder head cover, Oil pan, Brake Automotive underhood parts such as piping, fuel piping tubes, exhaust gas system parts, gear parts, automotive gear parts such as gears, actuators, bearing retainers, bearing cages, chain guides, chain tensioners, shift lever brackets, steering lock brackets, key cylinders, doors Automobile interior parts such as inner handle, door handle cowl, interior mirror bracket, air conditioner switch, instrument panel, console box, glove box, steering wheel, trim, front fender, rear fender, fuel lid, door panel, cylinder head cover, door mirror stay, Tailgate panel, license garnish, roof rail, engine mount bracket, rear garnish Car, rear spoiler,
- Vf (volume%) (W1 / ⁇ f) / ⁇ W1 / ⁇ f + (W0 ⁇ W1) / ⁇ 1 ⁇ ⁇ 100 ⁇ f: density of reinforcing fiber (g / cm 3 ) ⁇ r: density of resin composition (g / cm 3 )
- the photographing range was a range of thickness of fiber-reinforced thermoplastic resin substrate ⁇ width of 500 ⁇ m.
- the area of the site occupied by the fiber-reinforced thermoplastic resin substrate and the area of the site forming voids (voids) were determined, and the porosity was calculated by (Equation 5).
- Void fraction (%) (total area of the portion occupied by voids) / (total area of fiber-reinforced thermoplastic resin base material) ⁇ 100
- connection state of the voids was performed by observing the cross section in the thickness direction of the fiber-reinforced thermoplastic resin base material obtained in each of Examples and Comparative Examples as follows.
- the cross section parallel to the orientation direction of the reinforcing fibers of the fiber reinforced thermoplastic resin substrate is measured using an ultra-depth color 3D shape measuring microscope VHX-9500 (controller unit) / VHZ-100R (measuring unit) (manufactured by Keyence Corporation). And observed at 200 ⁇ magnification.
- the fiber reinforced thermoplastic resin substrate was divided into five equal parts in the width direction, and a cross section parallel to the reinforcing fiber orientation direction was observed over a length of 100 mm.
- connection state of the voids of the fiber reinforced thermoplastic resin base material was evaluated in the following two stages, and a pass was evaluated as good. Good: There are four or more base materials with connected voids. Poor: Less than 4 base materials with voids connected at the same location.
- Carbon fiber bundle T700S-12K manufactured by Toray Industries, Inc.
- Thermoplastic resin Polyamide 6 and polyamide 6/66, "Amilan” (registered trademark) manufactured by Toray Industries, Inc.
- Polyphenylene sulfide “Torelina” (registered trademark) manufactured by Toray Industries, Inc.
- Polyetheretherketone “VICTREX” (registered trademark) manufactured by Victrex Japan Co., Ltd.
- ULTEM registered trademark
- Example 1 The raw materials having the composition shown in Table 1 were mixed and charged into a feed port of a twin-screw extruder.
- Melt kneading was performed at a predetermined kneading temperature and screw rotation speed, and a strand-like molten resin was discharged from a discharge port.
- the discharged strand-shaped molten resin was cooled by passing through a cooling bath, and cut while being taken up by a pelletizer to obtain a thermoplastic resin pellet-shaped sample.
- the obtained thermoplastic resin was subjected to the above evaluation. Table 1 shows the evaluation results.
- the drawn-out carbon fiber bundle passed through a cooling roll, where the polyamide 6 resin was cooled and solidified, and wound around a winder as a continuous fiber-reinforced thermoplastic resin base material.
- the width of the obtained fiber-reinforced thermoplastic resin substrate was 50 mm, and the reinforcing fiber direction was arranged in one direction.
- the obtained fiber reinforced thermoplastic resin substrate was subjected to the above evaluation. Table 1 shows the evaluation results.
- Example 5 A fiber-reinforced thermoplastic resin base material was obtained in the same manner as in Example 1, except that the conditions for the matrix resin were changed to those shown in Table 1. The obtained fiber reinforced thermoplastic resin substrate was subjected to the above evaluation. Table 1 shows the evaluation results.
- Comparative Example 1 Using carbon fibers as reinforcing fibers, six bobbins around which carbon fiber bundles were wound were prepared, and the carbon fiber bundles were continuously sent out from the bobbins through a thread guide. A charged matrix resin powder ("Amilan” (registered trademark): polyamide 6 manufactured by Toray Industries, Inc.) was electrostatically adhered to the continuously delivered carbon fiber bundle. The electrostatically adhered powder was heated above the melting point to impregnate the carbon fiber bundle with the matrix resin. The width of the obtained fiber-reinforced thermoplastic resin substrate was 50 mm, and the reinforcing fiber direction was arranged in one direction. The obtained fiber reinforced thermoplastic resin substrate was subjected to the above evaluation. Table 1 shows the evaluation results. By comparing Examples 1 to 5 with Comparative Example 1, the fiber-reinforced thermoplastic resin substrate of the present invention is excellent in handleability and shapeability.
- the fiber-reinforced thermoplastic resin substrate according to the present invention can be formed into a desired shape by any molding method such as autoclave molding, press molding, and film molding.
- Molded articles obtained by molding using the fiber-reinforced thermoplastic resin substrate according to the present invention include, for example, aircraft engine peripheral parts, aircraft interior parts, aircraft exterior parts, vehicle frames, automobile engine peripheral parts, automobile underhood parts, It is effective for automotive applications such as automobile gear parts, automobile interior parts, automobile exterior parts, intake / exhaust system parts, engine cooling water system parts, automobile electrical parts, and electric / electronic parts such as LED reflectors and SMT connectors.
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Abstract
Description
[1]連続した強化繊維からなる連続繊維基材と、その表面に塗布された熱可塑性樹脂とからなる繊維強化熱可塑性樹脂基材であって、前記熱可塑性樹脂が連続繊維基材の表面全体を固化した状態で被覆され、かつ連続繊維基材中に空隙を残した状態で含浸されてなり、前記空隙が繊維配向方向に断続的に形成されている繊維強化熱可塑性樹脂基材。
[2]含浸距離が20μm~60μmであり、かつ繊維強化熱可塑性樹脂基材厚みの20%~80%である[1]に記載の繊維強化熱可塑性樹脂基材
[3]前記熱可塑性樹脂の含浸距離が表層を形成する熱可塑性樹の厚みより大きい[1]または[2]に記載の繊維強化熱可塑性樹脂基材
[4]前記熱可塑性樹脂が、ポリフェニレンスルフィド樹脂(PPS)、ポリアリーレンエーテルケトン樹脂(PAEK)、ポリエーテルケトンケトン樹脂(PEKK)、ポリエーテルスルホン樹脂(PES)、ポリエーテルイミド(PEI)、液晶ポリマー(LCP)から選ばれる1種の熱可塑性樹脂または2種以上の樹脂を組合せたポリマーアロイである[1]~[3]のいずれかに記載の繊維強化熱可塑性樹脂基材。
[5]前記熱可塑性樹脂がポリマーアロイからなる[4]に記載の繊維強化熱可塑性樹脂基材。
[6]前記ポリマーアロイの構造周期が0.001~10μmの両相連続構造、または前記ポリマーアロイが粒子径0.001~10μmの島相と海相からなる海島構造を形成するポリマーアロイを含有する[4]または[5]に記載の繊維強化熱可塑性樹脂基材。
[7]前記連続繊維基材が2層以上積層された連続繊維基材積層体の表面及び層間に前記熱可塑性樹脂が塗布された[1]~[6]のいずれかに記載の繊維強化熱可塑性樹脂基材。
[8]前記繊維強化熱可塑性樹脂基材の空隙率が10%~60%の範囲内である[1]~[7]のいずれかに記載の繊維強化熱可塑性樹脂基材。
[9]前記強化繊維が炭素繊維である[1]~[8]のいずれかに記載の繊維強化熱可塑性樹脂基材。
[10][1]~[9]のいずれかに記載の繊維強化熱可塑性樹脂基材を積層し、部分的に溶着してなる積層品。
[11]前記溶着が超音波溶着である[10]に記載の積層品。
[12][1]~[11]のいずれかに記載の繊維強化熱可塑性樹脂基材からなる成形品。
[13][1]~[12]のいずれかに記載の繊維強化熱可塑性樹脂基材または[12]に記載の成形品と、金属材料またはその成形品、もしくは樹脂材料またはその成形品とを一体化してなる複合成形品。
本発明に係る繊維強化熱可塑性樹脂基材は、連続した強化繊維からなる連続繊維基材と、その表面に塗布された熱可塑性樹脂とからなる繊維強化熱可塑性樹脂基材であって、前記熱可塑性樹脂が連続繊維基材の表面全体を固化した状態で被覆され、かつ連続繊維基材中に空隙を残した状態で含浸されてなり、前記空隙が繊維配向方向に断続的に形成されたものである。
(式1) Λm=(λ/2)/sin(θm/2)
(式2) Vf(体積%)=(W1/ρf)/{W1/ρf+(W0-W1)/ρ1}×100
ρf:強化繊維の密度(g/cm3)
ρr:熱可塑性樹脂の密度(g/cm3)
(式3) ボイド率(%)=(ボイドが占める部位の総面積)/(繊維強化熱可塑性樹脂基材の総面積)×100
図1を用いて、含浸距離の測定方法を説明する。連続繊維基材の強化繊維単糸3の中心から基材表面6に向けて引いた垂線7の上に他の単糸が存在しない強化繊維単糸3を無作為に100本選択し、強化繊維単糸3の外周と垂線7の交点から含浸が完了した単糸の遠い側の外周までの距離を、画像処理を用いて測定する。
各実施例および比較例により得られた繊維強化熱可塑性樹脂基材の質量W0を測定したのち、該繊維強化熱可塑性樹脂基材を空気中550℃で240分加熱して、樹脂成分を焼き飛ばし、残った強化繊維の質量W1を測定し、(式4)により繊維強化熱可塑性樹脂基材の体積含有率(Vf)を算出した。
(式4) Vf(体積%)=(W1/ρf)/{W1/ρf+(W0-W1)/ρ1}×100
ρf:強化繊維の密度(g/cm3)
ρr:樹脂組成物の密度(g/cm3)
各実施例および比較例により得られた繊維強化熱可塑性樹脂基材の厚み方向断面を以下のように観察した。繊維強化熱可塑性樹脂基材の強化繊維配向方向と垂直な横断面エポキシ樹脂で包埋したサンプルを用意し、繊維強化樹脂基材の厚み方向断面が良好に観察できるようになるまで、前記サンプルを研磨した。研磨したサンプルを、超深度カラー3D形状測定顕微鏡VHX-9500(コントローラー部)/VHZ-100R(測定部)((株)キーエンス製)を使用して、拡大倍率400倍で撮影した。撮影範囲は、繊維強化熱可塑性樹脂基材の厚み×幅500μmの範囲とした。撮影画像において、繊維強化熱可塑性樹脂基材が占める部位の面積および空隙(ボイド)となっている部位の面積を求め、(式5)により空隙率を算出した。
(式5) ボイド率(%)=(ボイドが占める部位の総面積)/(繊維強化熱可塑性樹脂基材の総面積)×100
良 :空隙が連結している基材が4個以上存在する。
不良:同じ個所に空隙が連結している基材が4個未満存在する。
各実施例および比較例により得られた繊維強化熱可塑性樹脂基材の表面品位を目視により観察した。表面品位は、以下の2段階で評価し、良を合格とした。
良 :表面に割れ、強化繊維の露出なし
不良:表面に割れ、強化繊維の露出有り
実施例および比較例において、原料は以下に示すものを用いた。
炭素繊維束 :東レ(株)製 T700S-12K
熱可塑性樹脂:
ポリアミド6およびポリアミド6/66、東レ(株)製“アミラン”(登録商標)
ポリフェニレンスルフィド 東レ(株)製“トレリナ”(登録商標)
ポリエーテルエーテルケトン ビクトレックス・ジャパン(株)製“VICTREX”(登録商標)
ポリエーテルイミド サビック(株)製“ULTEM”(登録商標)
表1に示す配合組成で、原料を混合し、二軸押出機のフィード口に投入した。二軸押出機としては、スクリュー径が25mm、L/D=41の同方向回転二軸押出機((株)パーカーコーポレーション社製、HK-25D(41D))を使用した。所定の混練温度、スクリュー回転数で溶融混錬を行い吐出口よりストランド状の溶融樹脂を吐出した。吐出されたストランド状の溶融樹脂を、冷却バスを通過させて冷却し、ペレタイザーにより引取ながら裁断することにより、熱可塑性樹脂のペレット状のサンプルを得た。得られた熱可塑性樹脂を前記評価に供した。評価結果を表1に示す。
マトリックス樹脂を表1に示す条件に変更した以外は実施例1と同様にして繊維強化熱可塑性樹脂基材を得た。得られた繊維強化熱可塑性樹脂基材を前記評価に供した。評価結果を表1に示す。
強化繊維として炭素繊維を使用し、炭素繊維束が巻かれたボビンを6本準備し、それぞれボビンから連続的に糸道ガイドを通じて炭素繊維束を送り出した。連続的に送り出された炭素繊維束に帯電させたマトリックス樹脂粉末(東レ(株)製“アミラン”(登録商標):ポリアミド6)を静電付着させた。静電付着した粉末を融点以上に加熱して炭素繊維束にマトリックス樹脂を含浸させた。得られた繊維強化熱可塑性樹脂基材の幅は50mmであり、強化繊維方向は一方向に配列していた。得られた繊維強化熱可塑性樹脂基材を前記評価に供した。評価結果を表1に示す。 実施例1~5と比較例1との比較により、本発明の繊維強化熱可塑性樹脂基材は取り扱い性と賦形性に優れる。
2 熱可塑性樹脂
3 強化繊維単糸
4 含浸距離
5 表層樹脂
6 基材表面
7 垂線
Claims (13)
- 連続した強化繊維からなる連続繊維基材と、その表面に塗布された熱可塑性樹脂とからなる繊維強化熱可塑性樹脂基材であって、前記熱可塑性樹脂が連続繊維基材の表面全体を固化した状態で被覆され、かつ連続繊維基材中に空隙を残した状態で含浸されてなり、前記空隙が繊維配向方向に断続的に形成されている繊維強化熱可塑性樹脂基材。
- 含浸距離が20μm~60μmであり、かつ繊維強化熱可塑性樹脂基材厚みの20%~80%である請求項1に記載の繊維強化熱可塑性樹脂基材。
- 前記熱可塑性樹脂の含浸距離が表層を形成する熱可塑性樹脂の厚みより大きい請求項1または2に記載の繊維強化熱可塑性樹脂基材。
- 前記熱可塑性樹脂が、ポリフェニレンスルフィド樹脂(PPS)ポリアリーレンエーテルケトン樹脂(PAEK)、ポリエーテルスルホン樹脂(PES)、ポリエーテルイミド(PEI)、液晶ポリマー(LCP)から選ばれる1種の熱可塑性樹脂または2種以上の樹脂を組合せたポリマーアロイである請求項1~3のいずれかに記載の繊維強化熱可塑性樹脂基材。
- 前記熱可塑性樹脂がポリマーアロイからなる請求項4に記載の繊維強化熱可塑性樹脂基材。
- 前記ポリマーアロイの構造周期が0.001~10μmの両相連続構造、または前記ポリマーアロイが粒子径0.001~10μmの島相と海相からなる海島構造を形成するポリマーアロイを含有する請求項1~5のいずれかに記載の繊維強化熱可塑性樹脂基材。
- 前記連続繊維基材が2層以上積層された連続繊維基材積層体の表面及び層間に前記熱可塑性樹脂が塗布された請求項1~6のいずれかに記載の繊維強化熱可塑性樹脂基材。
- 前記繊維強化熱可塑性樹脂基材の空隙率が10%~60%の範囲内である請求項1~7のいずれかに記載の繊維強化熱可塑性樹脂基材。
- 前記強化繊維が炭素繊維である請求項1~8のいずれかに記載の繊維強化熱可塑性樹脂基材。
- 請求項1~9のいずれかに記載の繊維強化熱可塑性樹脂基材を積層し、部分的に溶着してなる積層品。
- 前記溶着が超音波溶着である請求項10に記載の積層品。
- 請求項1~11のいずれかに記載の繊維強化熱可塑性樹脂基材からなる成形品。
- 請求項1~12のいずれかに記載の繊維強化熱可塑性樹脂基材または請求項10に記載の成形品と、金属材料またはその成形品、もしくは樹脂材料またはその成形品とを一体化してなる複合成形品。
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TW202022027A (zh) | 2020-06-16 |
US20210253813A1 (en) | 2021-08-19 |
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JPWO2020040121A1 (ja) | 2021-08-10 |
CN112566964A (zh) | 2021-03-26 |
AU2019326170A1 (en) | 2021-02-25 |
BR112021001755A2 (pt) | 2021-04-27 |
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