WO2020009125A1 - Feuille de cfrp, corps stratifié utilisant une feuille de cfrp et procédé de production de feuille de cfrp - Google Patents

Feuille de cfrp, corps stratifié utilisant une feuille de cfrp et procédé de production de feuille de cfrp Download PDF

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Publication number
WO2020009125A1
WO2020009125A1 PCT/JP2019/026365 JP2019026365W WO2020009125A1 WO 2020009125 A1 WO2020009125 A1 WO 2020009125A1 JP 2019026365 W JP2019026365 W JP 2019026365W WO 2020009125 A1 WO2020009125 A1 WO 2020009125A1
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WIPO (PCT)
Prior art keywords
sheet
layer
cfrp
sheet piece
resin
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Ceased
Application number
PCT/JP2019/026365
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English (en)
Japanese (ja)
Inventor
金森尚哲
兼岩秀和
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Fukuvi Chemical Industry Co Ltd
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Fukuvi Chemical Industry Co Ltd
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Priority to JP2020529015A priority Critical patent/JP7118149B2/ja
Priority to CN201980044180.4A priority patent/CN112399917B/zh
Publication of WO2020009125A1 publication Critical patent/WO2020009125A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • 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
    • 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
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Definitions

  • the present invention relates to an improvement in a CFRP sheet, and more particularly, to a CFRP sheet excellent in design, a laminate using the same, and a method for efficiently producing the CFRP sheet.
  • CFRP carbon fiber reinforced plastic
  • a UD sheet in which carbon fiber bundles arranged and aligned in the length direction are bonded and integrated with a matrix resin is finely cut into strips, and the cut strip-shaped UD sheet pieces are arranged in a two-dimensional direction.
  • a CFRP sheet formed into a sheet by being integrated by a hot press has also been developed (for example, see Patent Document 1).
  • CFRP sheet has an appearance in which strip-shaped (rectangular) UD sheet pieces are merely arranged on the surface, and there is no significant difference in the shape of each UD sheet piece. It was easy to be a monotonous design. For this reason, CFRP sheets have rarely been used for applications such as decorative sheets that require design properties.
  • the present invention has been made in view of the above-described problems, and a purpose thereof is to provide a CFRP sheet having not only excellent mechanical strength such as tensile strength but also excellent design of a visible surface, and An object of the present invention is to provide a laminated body used and a method for efficiently producing the CFRP sheet.
  • a CFRP sheet is formed by forming a transparent resin layer C outside the surface layer of the CFRP layer S, and the CFRP layer S is formed by forming continuous fibrous carbon fibers FF in the longitudinal direction.
  • each of PP is characterized in that the average thickness is smaller than that of the UD sheet piece Q of the back surface layer or the intermediate layer, and that at least a part includes a non-rectangularly distorted sheet piece.
  • non-rectangular shape refers to the difference between the maximum value and the minimum value of the width dimension (dimension in the direction perpendicular to the length direction of the carbon fiber) of the UD sheet piece is the maximum value of the width dimension.
  • the present invention provides a CFRP sheet in which a transparent resin layer C is formed outside a surface layer of the CFRP layer S, wherein the CFRP layer S aligns continuous fibrous carbon fibers FF in a length direction.
  • a large number of UD sheet pieces, which are bonded and integrated with the matrix resin M in an arranged state, are arranged in a two-dimensional direction so that the fiber directions of the respective sheet pieces are randomly oriented, and the respective sheet pieces overlap each other.
  • the UD sheet pieces P and Q of the surface layer and the back surface layer of the CFRP layer S may include non-rectangularly distorted sheet pieces while being bonded by the matrix resin M in the folded state. .
  • the ratio of the non-rectangularly distorted UD sheet piece P in the surface layer of the CFRP layer S is 30% or more (preferably 50% or more), and the unique appearance is excellent in design.
  • a CFRP sheet can be formed.
  • the average area per one UD sheet piece P in the surface layer of the CFRP layer S is made larger than the average area of the UD sheet piece Q of the back layer or the intermediate layer to thereby reduce the surface layer.
  • the distortion of the shape of the UD sheet piece P can be increased to enhance the design effect.
  • the ratio of the unraveled portion L in which the parallel carbon fibers are partially separated from each other in the UD sheet piece P of the surface layer of the CFRP layer S is made larger than that of the UD sheet piece Q of the back layer or the intermediate layer.
  • the UD sheet piece P of the surface layer can be formed when the transparent resin layer C is formed. Can be easily unraveled.
  • a laminate having a unique appearance and excellent design can be formed by laminating and integrating the above CFRP sheet on the surface of the same material or a different material.
  • a large number of UD sheet pieces arranged in a two-dimensional direction and a resin film as a material of a transparent resin layer are roll-formed and temporarily bonded, or two-dimensionally.
  • the intermediate sheet material in which the CFRP layer and the transparent resin layer are integrated by coating the molten resin as a material of the transparent resin layer on a large number of UD sheet pieces arranged in May be further hot pressed to deform the UD sheet piece of the surface layer.
  • the pressing force of the hot press on the intermediate sheet material the pressing force of the roll forming when the UD sheet piece and the resin film are temporarily bonded, or the hot pressing of the UD sheet piece coated with the molten resin are used. It is preferable that the pressure is larger than the pressing force.
  • a continuous fiber carbon fiber and a thermoplastic resin are roll-formed to form a UD sheet by bonding carbon fibers to each other.
  • the UD sheet pieces produced by cutting this UD sheet into a rectangular shape are arranged in a two-dimensional direction on a resin film as a material of a transparent resin layer, or formed into a large number of UD sheet pieces arranged in a two-dimensional direction. It is also possible to adopt a method in which the UD sheet piece of the surface layer is distorted by coating the molten resin which is the material of the transparent resin layer and performing heat compression molding.
  • the pressing force of the heat compression molding on the resin film and the UD sheet piece or the pressing force of the heat compression molding on the UD sheet piece coated with the molten resin is determined by the pressing force of the roll forming during the production of the UD sheet. Preferably, it is larger.
  • the basis weight of the resin film is 5% or more of the basis weight of the entire UD sheet piece in order to enhance the design of the surface.
  • a large number of UD sheet pieces are bonded in a state in which the fiber direction of each sheet piece is randomly oriented, and in a state where the sheet pieces are arranged in a two-dimensional direction so that the sheet pieces overlap each other, and the CFRP sheet is bonded.
  • a unique appearance can be imparted to the sheet surface by forming and including a non-rectangularly distorted UD sheet piece in the surface layer.
  • the back layer or the intermediate layer of the CFRP sheet is formed of a rectangular UD sheet piece having a thickness greater than that of the UD sheet piece of the surface layer and having a uniform shape, There is no concern that the tensile strength or the like is greatly impaired, and both design properties and mechanical strength can be achieved.
  • CFRP sheet that can be used as a reinforcing sheet or the like without any problem and can be suitably used as a surface sheet or the like requiring a design property can be provided. Very expensive.
  • CFRP sheet [1] Basic Configuration of CFRP Sheet First, in the present embodiment, as shown in FIG. 1, a CFRP layer S and a transparent resin layer C are formed outside a visible surface side surface layer to form a sheet body. ing. Further, as shown in FIGS. 2A, 2B, and 2C, the CFRP layer S has a large number of UD sheet pieces P and Q arranged in a two-dimensional direction such that the sheet pieces overlap each other. Carbon fiber materials in which the fiber directions of Q are randomly oriented (arranged so that the fiber directions of the UD sheet pieces are scattered) are formed by bonding and integrating with a matrix resin M.
  • the UD sheet pieces P and Q of the CFRP layer S are arranged in a matrix resin in a state where continuous fibrous carbon fibers FF are aligned in the length direction as shown in FIGS.
  • the one integrated with M is used.
  • the rear layer or the intermediate layer which is the invisible surface of the CFRP layer S, is configured by arranging rectangular UD sheet pieces Q, Q,... Shown in FIG. 3B, while the surface layer of the CFRP layer S is
  • the UD sheet pieces PP having an average thickness smaller than the UD sheet piece Q of the back layer or the intermediate layer shown in FIG. 3A are arranged side by side, and at least a part thereof includes a non-rectangularly distorted sheet piece. I am trying to be.
  • the UD sheet pieces Q having relatively large thicknesses of the back layer and the intermediate layer ensure the mechanical strength of the CFRP layer S while having a relatively small thickness and a small shape.
  • the UD sheet pieces PP having an uneven surface layer a unique appearance can be given to the sheet body as shown in FIG. 2 (b).
  • the smoothness of the surface of the sheet body can be improved by the transparent resin layer C formed outside the surface layer of the CFRP layer S, and the protective effect and the optical visual effect of the CFRP layer S can be imparted. .
  • the polyamide resin (nylon resin) is used in the present embodiment for the matrix resin M of the CFRP layer S, but the present invention is not limited to this, and the carbon fiber material is impregnated.
  • Other thermoplastic resins having properties acrylic resin, polyester, polyolefin, polystyrene, polycarbonate, ABS resin, polyetherimide, fluororesin, polyphenylene sulfide, etc.
  • thermosetting resins can also be used.
  • thermoplastic resin having adhesiveness to the thermoplastic resin of the transparent resin layer C is added to the matrix resin of the CFRP layer S. Is used, the UD sheet piece P of the surface layer can be easily unraveled during hot pressing.
  • Shape of UD sheet piece [4-1] Shape of UD sheet piece of surface layer Regarding the UD sheet piece P of the surface layer of the CFRP layer S, in this embodiment, a non-rectangular shape is used in order to enhance the design effect.
  • the ratio of the UD sheet piece P distorted in shape is set to 30% or more.
  • FIGS. 3 (a) are shown as UD sheet piece difference between the maximum value X 1 and the minimum value X 2 of the linear dimension of more than 10% of the maximum value X 1 of that the size, or refers to what the difference between the maximum value Y 1 and the minimum value Y 2 of the width is equal to or more than 10% of the maximum value Y 1.
  • the average thickness of the UD sheet piece Q of the back layer or the intermediate layer is set so that the shape of the UD sheet piece P of the surface layer becomes large. About half of that.
  • the average value of the maximum value Y 1 of the width of the UD sheet piece P as the average width so that the average width is equal to or greater than 1.5 times the average width of the UD sheet piece Q of the back layer or the intermediate layer I have to.
  • the average area of one UD sheet piece P of the surface layer is larger than the average area of the UD sheet piece Q of the inner layer.
  • the average width of the UD sheet piece P of the surface layer is set to be larger than the average width of the UD sheet piece Q of the back layer or the intermediate layer so that the shape of the UD sheet piece P of the surface layer increases. Is also getting bigger.
  • the ratio of the unraveled portion L in which the parallel carbon fibers F of the UD sheet piece P of the surface layer are partially separated from each other is made larger than that of the UD sheet piece Q of the back layer or the intermediate layer. .
  • width W 2 mm to 20 mm preferably 5 mm to 10 mm
  • length L 5 mm to 70 mm preferably 10 mm to 30 mm
  • ratio of width W to length L 1: 1 to 1 It is preferable to use a 1: 6 rectangular shape.
  • the direction along the length direction of the carbon fiber F is defined as the length direction of the UD sheet piece P, and the direction perpendicular to the direction is defined as the width direction.
  • the thickness of the UD sheet piece Q of the back layer or the intermediate layer is preferably in the range of 40 ⁇ m to 100 ⁇ m.
  • the average number of UD sheet pieces P and Q stacked in the CFRP layer S in the thickness direction is designed to be in a range of 5.0 to 8.0 sheets. However, any number of sheets can be designed according to the strength of the sheet body. Further, the thickness of the CFRP layer S is preferably designed in the range of 0.3 mm to 1.0 mm, but it can be formed in a thicker plate shape.
  • the surface layer serving as the visible surface of the CFRP layer S is formed on only one surface of the sheet body in the present embodiment, but is formed on both surfaces of the sheet body. Can also be formed. In that case, the CFRP layer S does not have a back surface layer, and is composed of only a surface layer and an intermediate layer. When the thickness of the CFRP layer S is very small, there may be a case where the intermediate layer does not exist and is composed of only the front surface layer and the back surface layer.
  • the material of the transparent resin layer C is a polyamide resin in the present embodiment, but is not limited to this.
  • Other thermoplastic resins having an impregnating property acrylic resin, PET, polyethylene, polystyrene, polycarbonate, ABS resin, polyetherimide, fluororesin, polyphenylene sulfide, etc.
  • thermosetting resins can also be used.
  • the transparent resin layer C includes not only a colorless and transparent layer but also a slightly colored translucent layer.
  • the basis weight of the resin film used as a material is determined with respect to the basis weight of the entire UD sheet piece.
  • the size is preferably 5% or more (more preferably 5 to 100%, further preferably 10 to 50%).
  • the weight per unit area of the resin film may be smaller than 5% of the total weight of the UD sheet piece.
  • the principle that the UD sheet piece of the surface layer is distorted is that, when the transparent resin melted into the fine irregularities on the surface of the CFRP layer flows (deforms) and enters, the carbon fiber of the UD sheet piece whose bonding force is weakened by heating. It is presumed to be caused by the movement of Further, the UD sheet pieces having weakened bonding force between the carbon fibers at the time of the hot pressing are crushed and the carbon fibers move in the width direction, so that the thickness of the UD sheet pieces of the surface layer becomes smaller than that of the back layer or the intermediate layer. And the width dimension of the UD sheet piece of the front surface layer is larger than the width dimension of the UD sheet piece of the back layer or the intermediate layer.
  • the pressing force of the hot press on the intermediate sheet material is made larger than the pressing force of the roll forming when the UD sheet piece and the resin film are temporarily bonded, so that the fluidity (deformability) of the transparent resin is increased. And the shape of the UD sheet piece of the surface layer is greatly distorted. Further, by increasing the pressing force of the hot press on the intermediate sheet material, it is possible to form more unraveled portions on the UD sheet piece of the surface layer.
  • thermoplastic resin film is used as the material of the transparent resin layer as described above.
  • a granular or short fiber thermoplastic resin is laminated and temporarily formed on a UD sheet piece.
  • the transparent resin layer can also be formed by bonding and hot pressing them.
  • the UD sheet piece of the surface layer can be distorted in the same manner as described above.
  • the basis weight of the resin film is preferably 5% or more (more preferably 5 to 100%, further preferably 10 to 50%) with respect to the basis weight of the entire UD sheet piece.
  • the method of producing the intermediate sheet material it is not always necessary to use a resin film, and a large number of UD sheet pieces arranged in a two-dimensional direction are coated with a molten resin as a material of a transparent resin layer and hot pressed. By doing so, it is possible to produce an intermediate sheet material in which the CFRP layer and the transparent resin layer are integrated. In this case, it is preferable that the pressing force of the hot press on the intermediate sheet material is larger than the pressing force of the hot press on the UD sheet piece coated with the molten resin.
  • the flowability (deformability) of the transparent resin is increased by setting the pressure of the heat compression molding on the resin film and the UD sheet piece larger than the pressure of the roll molding at the time of producing the UD sheet.
  • the shape of the UD sheet piece of the surface layer is greatly distorted.
  • by increasing the pressing force of the heat compression molding on the resin film and the UD sheet piece it is possible to form more melting portions in the UD sheet piece of the surface layer.
  • a granular or short-fiber thermoplastic resin may be laminated instead of the thermoplastic resin film to form a transparent resin layer.
  • the UD sheet of the surface layer may be formed as described above.
  • the pieces can be distorted.
  • the basis weight of the resin film is preferably 5% or more (more preferably 5 to 100%, further preferably 10 to 50%) with respect to the basis weight of the entire UD sheet piece.
  • the heat compression molding does not necessarily require the use of a resin film, but may be performed on a multiplicity of layered UD sheet pieces coated with a molten resin as a material of a transparent resin layer.
  • the thickness of the CFRP layer S is preferably in the range of 0.1 mm to 0.2 mm (average number of UD sheet pieces P and Q: 2 to 4) so that the transparent resin enters the back layer.
  • the ratio of the UD sheet piece P distorted in a non-rectangular shape is preferably 30% or more (preferably 50% or more).
  • the seat body As described above, a unique appearance can be imparted to the seat body.
  • the smoothness of the surface of the sheet body can be improved by the transparent resin layer C formed outside the surface layer of the CFRP layer S, and the protective effect and the optical visual effect of the CFRP layer S can be provided.
  • Other configurations and manufacturing methods are the same as in the first embodiment.
  • the CFRP sheet of the first embodiment is laminated and integrated on the surface of a plastic material by hot pressing to form a laminate having excellent surface design (not shown).
  • a target for laminating the CFRP sheets not only a plastic material but also a different material such as a same kind of CFRP material or metal can be adopted.
  • Example 1 In this example, a polyamide resin (nylon 6) was used for the matrix resin of the CFRP layer and the thermoplastic resin of the transparent resin layer in the CFRP sheet having the configuration of the first embodiment, and the method of the manufacturing method (i) was used. A sample was produced by the method described above.
  • the pressing force of the roll forming at the time of temporary bonding (the pressing force at the time of manufacturing the intermediate sheet material) is set to 0.2 to 0.4 MPa, and the pressing force of the hot press on the intermediate sheet material (from the intermediate sheet material to the sheet body). was 3 MPa.
  • Comparative Example 1 In the present example, a polyamide resin (nylon 6) was used for the matrix resin of the CFRP layer and the thermoplastic resin of the transparent resin layer, respectively, in the CFRP sheet having the configuration of the first embodiment.
  • Example 1 ⁇ Test results> To summarize the test results of Example 1 and Comparative Examples 1 and 2, the sample of Example 1 was able to sufficiently improve the design, whereas the samples of Comparative Examples 1 and 2 were sufficiently improved in the design. could not be increased. A table summarizing the conditions and test results of each sample is shown below.
  • Example 1 In this example, a polyamide resin (nylon 6) was used for the matrix resin of the CFRP layer and the thermoplastic resin of the transparent resin layer in the CFRP sheet having the configuration of the second embodiment, and the sample was produced by the production method (i). Was prepared.
  • a UD sheet piece having a width of 5 mm, a length of 20 mm, a thickness of 0.043 mm, and a Vf of 53% was used as a material.
  • the UD sheet pieces arranged in the two-dimensional direction and the thermoplastic resin film as the material of the transparent resin layer were roll-formed under the conditions of a roll temperature of 270 ° C. and a roll pressure of 0.5 MPa.
  • An intermediate sheet material having m2, thickness of 0.15 mm and Vf of 43.3% was produced.
  • hot pressing was performed on the intermediate sheet material under the conditions of a mold temperature of 270 ° C., a pressing force of 3 MPa and a pressing time of 0.5 min, the mold temperature was 30 ° C., the pressing force was 5 MPa, and the pressing time was 3 min.
  • a cooling press was performed under the conditions to produce a sheet body having dimensions of 381 mm in width, 277 mm in length, 0.12 mm in thickness, and Vf of 43.3%. As a result, a highly designable sample having a unique appearance was produced.
  • Example 2 In this example, in a CFRP sheet having the configuration of the second embodiment, a polyphenylene sulfide (PPS) resin was used as the matrix resin of the CFRP layer, and a polyamide resin was used as the thermoplastic resin of the transparent resin layer.
  • PPS polyphenylene sulfide
  • a sample was produced by the method described above.
  • a UD sheet piece having a width of 5 mm, a length of 20 mm, a thickness of 0.048 mm, and a Vf of 47% was used as a material.
  • the UD sheet pieces arranged in the two-dimensional direction and the thermoplastic resin film as the material of the transparent resin layer were roll-formed under the conditions of a roll temperature of 270 ° C. and a roll pressure of 0.5 MPa.
  • An intermediate sheet material having m2, thickness of 0.15 mm and Vf of 35% was produced.
  • the mold temperature is 30 ° C., a pressing force of 5 MPa, and a pressing time of 3 min.
  • a cooling press was performed under the conditions to prepare a sheet body having dimensions of 381 mm in width, 277 mm in length, 0.12 mm in thickness, and 35% Vf. As a result, a highly designable sample having a unique appearance was produced.
  • Example 3 In the present example, in the CFRP sheet having the configuration of the second embodiment, a polycarbonate resin (PC) is used as the matrix resin of the CFRP layer, and a polyamide resin is used as the thermoplastic resin of the transparent resin layer. A sample was prepared. In this embodiment, a UD sheet piece having a width of 5 mm, a length of 20 mm, a thickness of 0.048 mm, and a Vf of 47% was used as a material.
  • PC polycarbonate resin
  • a polyamide resin is used as the thermoplastic resin of the transparent resin layer.
  • the UD sheet pieces arranged in the two-dimensional direction and the thermoplastic resin film as the material of the transparent resin layer were roll-formed under the conditions of a roll temperature of 270 ° C. and a roll pressure of 0.5 MPa.
  • An intermediate sheet material having m2, thickness of 0.15 mm and Vf of 35% was produced.
  • a cooling press was performed under the conditions to prepare a sheet body having dimensions of 381 mm in width, 277 mm in length, 0.12 mm in thickness, and 35% Vf.
  • a highly designable sample having a unique appearance was produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

Le problème décrit par la présente invention est de fournir une feuille de plastique renforcé par des fibres de carbone (CFRP) qui est non seulement excellente en termes de résistance mécanique comme la résistance à la traction, mais également excellente en termes de conception de surface visible. La solution selon l'invention porte sur une feuille de CFRP qui est constituée par la formation d'une couche de résine transparente C sur le côté externe d'une couche de surface à partir d'une couche de CFRP S : la couche de CFRP S étant formée de multiples morceaux de feuille UD, chacun étant produit à partir de fibres de carbone en forme de fibres continues F·F… disposées de façon à être alignées dans le sens de la longueur et adhérant les uns aux autres dans cet état et étant transformés en un corps unique avec une résine de matrice M, les morceaux de feuille UD étant collés par la résine de matrice M tandis que la direction de fibre de chacun des morceaux de feuille est dans un état de façon à être orientés de manière aléatoire et les morceaux de feuille sont dans un état de façon à être disposés selon une orientation bidimensionnelle de manière à se chevaucher les uns les autres ; et, contrairement aux morceaux de feuille UD P·Q… dans la couche de surface arrière ou la couche intermédiaire de la couche de CFRP S, qui ont une forme rectangulaire, les morceaux de feuille UD P·P… dans la couche de surface sont constitués par inclusion de morceaux de feuille dont l'épaisseur moyenne est inférieure à celle des morceaux de feuille UD Q dans la couche de surface arrière ou la couche intermédiaire, et au moins partiellement déformés en une forme non rectangulaire.
PCT/JP2019/026365 2018-07-03 2019-07-02 Feuille de cfrp, corps stratifié utilisant une feuille de cfrp et procédé de production de feuille de cfrp Ceased WO2020009125A1 (fr)

Priority Applications (2)

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JP2020529015A JP7118149B2 (ja) 2018-07-03 2019-07-02 Ｃｆｒｐシート、ｃｆｒｐシートを用いた積層体、及びｃｆｒｐシートの製造方法
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WO2022145155A1 (fr) * 2020-12-28 2022-07-07 フクビ化学工業株式会社 Feuille de résine renforcée par des fibres, matériau composite renforcé par des fibres et produit formé
JPWO2023190718A1 (fr) * 2022-03-30 2023-10-05
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