WO2020031919A1 - Fiber-reinforced resin molded article and method for manufacturing same - Google Patents
Fiber-reinforced resin molded article and method for manufacturing same Download PDFInfo
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- WO2020031919A1 WO2020031919A1 PCT/JP2019/030586 JP2019030586W WO2020031919A1 WO 2020031919 A1 WO2020031919 A1 WO 2020031919A1 JP 2019030586 W JP2019030586 W JP 2019030586W WO 2020031919 A1 WO2020031919 A1 WO 2020031919A1
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- WIPO (PCT)
- Prior art keywords
- fiber
- thermosetting resin
- surface layer
- sheet
- shaping
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Classifications
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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
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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
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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
- B32B27/04—Layered products comprising a layer of synthetic resin as impregnant, bonding, or embedding 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
- 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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- 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
Definitions
- the present disclosure relates to a fiber-reinforced resin molded article containing a thermosetting resin and fibers, and a method for producing the same.
- One aspect of the present invention made in order to solve the above-mentioned problem is (1) On at least one of the front and back surfaces of the plate-like base material portion, a surface layer component portion made of a shaping compound containing a fiber and a first thermosetting resin is partially laminated, and The material portion includes a reinforcing fiber having a longer fiber length than the fibers included in the shaping compound and a second thermosetting resin, and the first thermosetting resin and the second thermosetting resin When the resin is cured, the base portion and the surface layer forming portion are integrated, and the surface layer forming portion is embedded in the base portion, and other than the shaping portion and the shaping portion.
- a base portion that is a portion, wherein the base portion is disposed substantially flush with the base portion, and the shaping portion projects from the base portion in a direction opposite to the base portion.
- the base or the base portion and a concave portion recessed toward the base portion side than the surface formed by the base portion, 2 of the thermosetting resin, the than the first thermosetting resin, the glass transition temperature is high, or long curing time, the fiber-reinforced resin molded body.
- the high curing temperature described later in this specification means that the temperature required for curing the thermosetting resin in a certain period of time is high. Further, a long curing time means that the time required for curing the thermosetting resin at a certain temperature is long.
- the high glass transition temperature means that the temperature is high when the glass transition temperature of the thermosetting resin before curing is compared.
- Preferred aspects of the present invention are: (2)
- the base material portion is formed by laminating a fiber sheet made of the reinforcing fiber on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells.
- the fiber sheet and the second thermosetting resin are impregnated, and the portion of the foam sheet that overlaps with the surface layer component in the thickness direction is compared with a portion that does not overlap with the surface layer component in the thickness direction.
- the fiber-reinforced resin molded article according to (1) which is compressed in a thickness direction.
- Preferred aspects of the present invention are: (3) On the at least one surface of the base member, a plurality of the surface layer components are provided apart from each other, and the shaping portion is provided on each surface layer component, (1) or (2).
- a shaping compound including a fiber and a first thermosetting resin, and a base including a reinforcing fiber having a longer fiber length than a fiber included in the shaping compound and a second thermosetting resin.
- Material part sheet, and preparing the shaping compound partially on at least one of the front and back surfaces of the base part sheet, by hot press molding, the first thermosetting resin and The second thermosetting resin is cured, and the base portion formed from the base portion sheet and the surface layer forming portion formed from the shaping compound are integrated to form a fiber-reinforced resin molding.
- thermosetting resin compared with the first thermosetting resin, Curing time at a temperature of less molding used long, method for producing a fiber-reinforced resin molded body.
- Preferred aspects of the present invention are: (5) As the base member sheet, a fiber sheet made of the reinforcing fiber is laminated on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells, and The method for producing a fiber-reinforced resin molded product according to (4), wherein a molded product impregnated with a thermosetting resin is used.
- Preferred aspects of the present invention are: (6) A plurality of surface forming portions for forming the shaping portion of the surface layer forming portion are provided on a molding surface of a molding die for performing the hot press molding, and in performing the hot press molding, The fiber-reinforced resin molded article according to (4) or (5), wherein a plurality of the shaping compounds are prepared, and the plurality of shaping compounds are stacked on the surface forming portion of the molding surface while being separated from each other. Manufacturing method.
- the first thermosetting resin can be cured before the second thermosetting resin is cured, and the first thermosetting resin is cured and hardened. It becomes easy to form the base layer portion in a state of following the shape of the resulting surface layer constituting portion. Thereby, the surface layer constituting portion is embedded in the base portion, and it is possible to stably fix the surface layer constituting portion formed of the shaping compound and the substrate portion.
- a foam sheet having open cells is provided in the base material portion.
- the portion of the foam sheet that overlaps with the surface layer component in the thickness direction is compressed in the thickness direction as compared with the portion that does not overlap with the surface layer component in the thickness direction.
- a portion of the foam sheet that overlaps the surface layer component in the thickness direction is compressed, so that the surface layer component can be easily formed in a state of being embedded in the base member.
- the side surface of the above (5) by compressing a portion of the foamed sheet that overlaps the shaping compound in the thickness direction, the surface layer constituting portion can be easily formed in a state embedded in the base material portion. it can.
- a plurality of shaping portions formed of protrusions or recesses are provided. According to this aspect, the amount of the shaping compound used to form the surface layer forming part is smaller than when the surface layer forming part including one shaping compound is formed over all of the plurality of shaping parts. Can be reduced.
- FIG. 1 Perspective view of a fiber-reinforced resin molded product according to an embodiment of the present disclosure
- Side sectional view of fiber reinforced resin molding Enlarged side sectional view around the boss of the fiber-reinforced resin molded body
- Side cross-sectional view of base material and surface layer component after hot press molding with molding die (A) An enlarged cross-sectional side view of the base sheet and the sheet molding compound before hot press molding, and (B) the base sheet when the first thermosetting resin is cured in the molding die.
- FIG. 1 shows a fiber-reinforced resin molded product 10 according to an embodiment of the present disclosure.
- the fiber-reinforced resin molded body 10 of the present embodiment is used for, for example, bicycle parts.
- the fiber-reinforced resin molded body 10 has a plate-shaped base portion 20, and a projection (specifically, a reinforcing rib 13 and a reinforcing rib 13) is formed from a first surface 20 ⁇ / b> A that is one of the front and back surfaces of the base portion 20.
- the boss 14) is configured to protrude.
- the second surface 20B (see FIG. 2), which is the other surface of the base member 20, is a flat surface, but the second surface 20B may have irregularities. Alternatively, it may be a curved surface.
- the fiber-reinforced resin molded body 10 is configured such that the reinforcing ribs 13 and the surface layer constituting parts 30 constituting the bosses 14 are partially laminated on the first surface 20A of the base part 20. Be done.
- the surface layer constituting section 30 is made of a sheet molding compound (hereinafter, referred to as SMC) containing fibers and a first thermosetting resin.
- SMC sheet molding compound
- the SMC is an example of the shaping compound.
- the shaping compound in this specification refers to a material containing fibers and a first thermosetting resin. An additive may be added to the shaping compound to such an extent that the reaction is not hindered.
- the surface layer constituting section 30 has a configuration in which a shaping section is provided on a surface facing the opposite side to the base section 20.
- the surface layer constituting portion 30 is formed in a thin plate shape and overlaps the base portion 20, and the base portion 31 protrudes from the exposed surface 31 ⁇ / b> A facing the opposite side to the base portion 20 in the base portion 31.
- a surface projection 32 as a shaping portion.
- the surface layer constituting section 30 constituting the reinforcing rib 13 and the surface layer constituting section 30 constituting the boss 14 are separately provided and are arranged apart from each other.
- the surface protrusions 32 of each surface layer constituting portion 30 constitute the reinforcing rib 13 and the boss 14, respectively.
- the base member 20 has a structure in which a pair of fiber sheets 22 and 22 are laminated on both the front and back surfaces of the foam sheet 21.
- the foam sheet 21 is formed of an open-cell foam made of a thermosetting resin, and the foam sheet 21 is impregnated with a second thermosetting resin.
- the fiber sheet 22 is made of a reinforcing fiber having a longer fiber length than the fiber of the SMC forming the surface layer forming portion 30, and the second thermosetting resin is also applied to the fiber sheet 22. Impregnated. Then, the foam sheet 21 and the pair of fiber sheets 22, 22 are integrated by curing the second thermosetting resin impregnated in the foam sheet 21 and the pair of fiber sheets 22, 22.
- the base portion 31 of the surface layer constituting portion 30 is embedded in the base portion 20 and is in close contact with the base portion 20. Portions of the surface layer constituting section 30 other than the surface projections 32 are arranged substantially flush with the base section 20. Specifically, the exposed surface 31A of the base portion 31 of the surface layer forming portion 30 and the first surface 20A of the base portion 20 are substantially flush.
- the portion overlapping the surface layer constituting portion 30 in the thickness direction is substantially the same as the thickness of the base portion 31 as compared with the portion not overlapping the surface layer constituting portion 30 in the thickness direction. It is compressed and thin.
- the first thermosetting resin included in the surface layer forming portion 30 and the second thermosetting resin impregnated in the base portion 20 are cured, so that the surface layer forming portion 30 is hardened. And the base member 20 are integrated.
- the second thermosetting resin is harder to thermoset than the first thermosetting resin. That is, the second thermosetting resin has a longer curing time, which is a time required for curing at a constant temperature, or a longer curing time than the first thermosetting resin.
- the curing temperature, which is a high temperature, is high.
- the second thermosetting resin has a higher glass transition temperature than the first thermosetting resin.
- each component of the fiber-reinforced resin molded body 10 that is, the foam sheet 21, the fiber sheet 22, the first thermosetting resin, the second thermosetting resin, and the SMC are as follows. ing.
- Examples of the foam constituting the foam sheet 21 include a urethane resin foam and a melamine resin foam.
- the thickness of the foam sheet 21 is, for example, 0.1 to 29.5 mm with respect to the thickness of the base member 20 of 0.5 to 30 mm.
- the fiber sheet 22 for example, a sheet made of fibers such as carbon fiber, glass fiber, and aramid fiber can be used. Further, the fiber sheet 22 may be in the form of, for example, a woven fabric, a knitted fabric, or a nonwoven fabric. Examples of the weaving method of the woven fabric include plain weave, twill weave, satin weave, and triaxial weave. Further, the fiber sheet 22 may be composed of fibers oriented in one direction or a plurality of directions. From the viewpoint of weight reduction and improvement in rigidity, carbon fibers are preferable as the fibers constituting the fiber sheet 22. Further, from the viewpoint of improving rigidity, the fiber sheet 22 is preferably made of a fiber fabric. Examples of the fiber sheet 22 impregnated with a thermosetting resin include prepreg.
- the fibers constituting the fiber sheet 22 preferably have a longer fiber length than the fibers included in the SMC, and include, for example, fibers having a number average fiber length longer than that of the SMC fibers.
- Examples of the fiber sheet 22 include those made of continuous fibers or discontinuous fibers.
- the fiber sheet 22 preferably has a fiber length of 5 mm or more from the viewpoint of rigidity.
- the fiber sheet 22 preferably has a basis weight of 90 to 400 g / m 2 from the viewpoints of rigidity, impregnation of the second thermosetting resin, and lightness.
- the SMC for example, those containing fibers such as carbon fiber and glass fiber can be used. From the viewpoint of weight reduction and improvement in rigidity, carbon fibers are preferable as the fibers contained in the SMC. As the fibers contained in the SMC, those having a fiber length of 30 mm or less are preferable from the viewpoint of moldability. Further, as the fibers contained in the SMC, those having a fiber length of 5 mm or more are preferable from the viewpoint of improving rigidity.
- thermosetting resin of the SMC examples include an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, a phenol resin, an epoxy acrylate resin, or a mixed resin of two or more of these resins. Is mentioned.
- the reinforcing ribs 13 provided on the surface layer constituting section 30 include, for example, those having a protrusion amount of 0.1 to 30 mm and a minimum width of 0.5 to 10 mm.
- the boss 14 has, for example, a protrusion amount of 0.1 to 30 mm and a difference between the inner diameter and the outer diameter of 0.5 to 10.0 mm.
- thermosetting resin of the base member 20 for example, an epoxy resin, a phenol resin, or a mixed resin of these resins is used. By using these resins, the rigidity can be improved.
- the fiber-reinforced resin molded body 10 is manufactured as follows. First, a plurality of sheets are prepared. Specifically, a foam sheet 21 having open cells, a pair of fiber sheets 22, 22, and an SMC 30S containing a first thermosetting resin are prepared. The foam sheet 21 and each fiber sheet 22 are impregnated with a second thermosetting resin. As the second curable resin, a resin having a higher curing temperature, a higher glass transition temperature, or a longer curing time than the first curable resin may be used. Note that the second thermosetting resin may be impregnated into only one of the foam sheet 21 and the fiber sheet 22. Further, as the foam sheet 21, one having a density of 5 to 80 kg / m 3 is used from the viewpoint of ease of compression in hot press molding described later, impregnation of the second thermosetting resin, light weight, and rigidity. Is preferred.
- thermosetting resin a mixed resin of a vinyl ester resin and an epoxy acrylate resin is used as the first thermosetting resin, and the curing time is higher than that of the first thermosetting resin as the second thermosetting resin.
- a phenol resin having a long curing time was used.
- a foam sheet 21 made of urethane resin foam was used, a fiber sheet 22 was made of a prepreg made of carbon fiber fabric, and an SMC having carbon fibers was used.
- the foam sheet 21, the fiber sheet 22, and the SMC 30 ⁇ / b> S are superimposed on each other, and are hot-pressed by a molding die 70.
- FIG. 4 shows a molding die 70.
- the molding die 70 includes an upper die 71 and a lower die 72.
- the molding surface of the upper mold 71 is flat
- the molding surface of the lower mold 72 is formed as molding portions 73 and 74 as surface forming portions for forming the reinforcing ribs 13 and the bosses 14, respectively.
- the molding recess 73 has a groove shape
- the molding recess 74 has a cylindrical recess.
- the molding surface of the lower mold 72 is flat except for the portions where the molding recesses 73 and 74 are provided.
- the molding die 70 is opened, and the SMC 30S is partially overlapped with the molding surface of the lower die 72 so as to cover the molding recesses 73 and 74 of the lower die 72. (See FIGS. 4 and 6A).
- the SMC 30S that covers the molding concave portion 73 and the SMC 30S that covers the molding concave portion 74 are provided separately from each other and are separated from each other. Further, the amount of each SMC 30S is larger than the amount required to fill each of the molding recesses 73 and 74, that is, the amount required to form the reinforcing rib 13 and the boss 14.
- the curing time of the second thermosetting resin of the base material sheet 20S is longer than that of the first thermosetting resin of the SMC 30S. Therefore, as shown in FIG. 6B, in the molding die 70, the first thermosetting resin of the SMC 30S is cured before the second thermosetting resin (see FIG. 6B). 6 (B), FIG. 7 (A) and FIG. 7 (B), the portion including the completely cured thermosetting resin among the first and second thermosetting resins is shown in gray. ).
- FIG. 8 conceptually shows the relationship between the degree of curing of the first and second thermosetting resins and the heating time at a constant heating temperature in the molding die 70.
- the timings T1 and T2 at which the first and second thermosetting resins are completely cured are the states shown in FIGS. 6B and 7B, respectively.
- the surface component 30 is formed from the SMC 30S.
- the reinforcing ribs 13 and the bosses 14 are respectively formed by the portions of the SMC 30S that have entered the forming recesses 73 and 74, and the SMC 30S does not completely enter the forming recesses 73 and 74.
- the base portion 31 is formed by the thin plate-shaped surplus portion.
- the base material sheet 20S is Since it is not completely cured, as shown in the change from FIG. 6B to FIG. 7A, the base portion sheet 20S can be deformed to follow the shape of the surface layer constituting portion 30. .
- the base portion 31 is embedded in the base portion sheet 20S, and the portions of the base portion 31 and the base portion sheet 20S that face the lower mold 72 can be made substantially flush.
- the portion of the foam sheet 21 of the base portion sheet 20S that overlaps the base portion 31 of the surface layer constituting portion 30 in the thickness direction is smaller than the portion that does not overlap the base portion 31 in the thickness direction. It is compressed by the same amount as the thickness of 31.
- the base portion sheet 20S is cured.
- the base sheet 20 is formed by integrating the foam sheet 21 and the pair of fiber sheets 22, 22, and the base sheet 20 and the surface layer forming section 30 are integrated (see FIG. 5). ).
- the molding die 70 is opened, the base member 20 and the surface layer constituting portion 30 are removed from the molding die 70, and the fiber-reinforced resin molded body 10 shown in FIG. 2 is completed.
- the second thermosetting resin included in the base member 20 has a higher curing temperature than the first thermosetting resin included in the SMC.
- the glass transition temperature is high, or the curing time is long. Therefore, at the time of manufacturing the fiber-reinforced resin molded body 10, the first thermosetting resin of the SMC can be cured, and then the second thermosetting resin of the base member sheet 20S can be cured. It becomes easy to form the base member 20 in a state in which the base member 20 follows the shape of the surface layer constituting portion 30 in which the thermosetting resin is cured and hardened.
- the surface layer component 30 is embedded in the base member 20, and the fixing between the surface layer component 30 made of SMC and the substrate member 20 can be stabilized.
- the base portion 31 of the surface layer forming portion 30 substantially flush with the base material portion 20, it is possible to stabilize the dimensional accuracy of the amount of protrusion of the surface protrusion 32.
- the base portion 31 is substantially flush with the first surface 20A of the base portion 20, a space corresponding to the thickness of the base portion 31 is generated between the lower mold 72 and the base material sheet 20S.
- the thickness accuracy of the base member 20 can be improved, and the design flexibility of the base member 20 can be improved.
- the base sheet 20 is provided with the foam sheet 21 having open cells.
- the portion of the foam sheet 21 that overlaps the surface layer component 30 in the thickness direction is compressed in the thickness direction compared to the portion that does not overlap the surface layer component 30 in the thickness direction.
- the surface layer component 30 is embedded in the base member 20.
- the base portion 31 and the first surface 20A of the base portion 20 can be easily arranged substantially flush.
- the state where the surface layer constituting portion 30 is embedded in the base portion 20 by compressing the portion of the foam sheet 21 that overlaps the SMC 30S in the thickness direction. can be easily formed.
- the foam sheet 21 absorbs the distortion at the time of hot press molding, and sink marks and the like are generated in a portion of the second surface 20B of the base member 20 that overlaps the surface layer constituting portion 30 in the thickness direction. This can be suppressed, and the second surface 20B can be prevented from having an uneven appearance.
- a plurality of surface layer components 30 provided with the surface protrusions 32 are provided, and the plurality of surface layer components 30 are arranged apart from each other. According to the present embodiment, the amount of SMC used to form the surface layer component 30 is reduced as compared with the case where the surface layer component 30 including one SMC is formed over all of the plurality of surface protrusions 32. It is possible to do.
- Foam sheet 21 Inoac Corporation manufactured "Basotect (R) G +" (Density: 9.2 kg / m 3, a thickness 5.0 mm, was used which was cut to a size of 200 mm ⁇ 200 mm.)
- Fiber sheet 22 “W-3161-L” (manufactured by Toho Tenax Co., Ltd.) (a carbon fiber woven fabric composed of continuous fibers, with a basis weight of 200 g / m 2 , cut to the same size as the foam sheet 21).
- Second thermosetting resin "Sumilite Resin (registered trademark) PR-55791” manufactured by Sumitomo Bakelite Co., Ltd. (phenol resin; glass transition temperature: 151 ° C.)
- SMC Sheet molding compound
- the molding conditions of the heat press molding of this experimental example were a molding temperature of 150 ° C., a molding pressure of 20 MPa, and a molding time of 10 minutes.
- the foam sheet 21 is 0.10 mm
- each fiber sheet 22 is 0.25 mm
- the surface layer constituting portion 30 The base 31 was 0.40 mm.
- the molding time of the hot press molding was set to 3 minutes at the same molding temperature and molding pressure as above, while it was confirmed that the first thermosetting resin of the SMC was cured, the second The thermosetting resin was not completely cured, and the base member 20 was deformed when the base member 20 was removed from the molding die 70. That is, the timing at which the molding time has passed for 3 minutes is considered to be after the timing T1 shown in FIG. 8 and before the timing T2.
- the molding time is 10 minutes, since the timing T2 shown in FIG. 8 elapses, the first thermosetting resin of the SMC and the second thermosetting resin impregnated in the foam sheet 21 and the fiber sheet 22 are mixed. Both are completely cured, and the fiber-reinforced resin molded body 10 in the favorable state as described above can be manufactured.
- the surface projection 32 is provided as a shaping portion on the surface of the surface layer constituting portion 30 facing the side opposite to the base material portion 20.
- the concave portion 32V may be provided. Also in this case, by arranging the base portion 31 of the surface layer forming portion 30 substantially flush with the base portion 20, it is possible to stabilize the dimensional accuracy of the depth of the concave portion 32V.
- such a concave portion 32V may be a groove or a hole.
- two surface projections 32, 32 constituting the reinforcing rib 13 and the boss 14, respectively, may be provided in one surface layer component 30 (ie, one SMC). May be formed).
- the base member 20 has the configuration in which the fiber sheet 22 is laminated on both the front and back surfaces of the foam sheet 21, but the fiber sheet 22 is laminated on only one of the front and back surfaces of the foam sheet 21.
- the configuration may be as follows.
- the surface layer constituting portion 30 may be laminated on the base material portion 20 from the fiber sheet 22 side, or may be laminated on the foam sheet 21 side as shown in FIG.
- the base member 20 in which the foam sheet 21 and the fiber sheet 22 are laminated a configuration in which two or more foam sheets 21 are provided or three fiber sheets 22 may be provided.
- the configuration provided above may be used.
- the base member 20 may have a configuration in which the foam sheet 21 and the fiber sheet 22 are alternately laminated one by one, or a configuration including adjacent foam sheets 21 or adjacent fiber sheets 22. There may be.
- the outermost layer of the base member 20 on which the surface layer constituting portion 30 is laminated may be constituted by the foam sheet 21 or may be constituted by the fiber sheet 22.
- the sheets constituting the base member 20 are the foam sheet 21 and the fiber sheet 22, but may be only the fiber sheet 22.
- this configuration for example, a configuration in which the base member 20 is made of a prepreg is given.
- the surface layer constituting section 30 may be provided on both the front and back surfaces of the base section 20.
- the SMC 30S is overlaid on both the front and back surfaces of the base material sheet 20S.
- thermosetting resin impregnated in the foam sheet 21 and the fiber sheet 22 is the same, but may be different.
- the thermosetting resin impregnating the foamed sheet 21 and the thermosetting resin impregnating the fiber sheet 22 each have a higher curing temperature than the first thermosetting resin constituting the SMC.
- one having a long curing time is used.
- the surface protrusion 32 of the surface layer constituting portion 30 may be, for example, a ridge, a protrusion wall, or a rod-like protrusion.
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Abstract
In this fiber-reinforced resin molded article (10), a surface layer constituent part (30) made of SMC that contains fibers and a first thermosetting resin is partially laminated on the obverse and/or reverse surface of a plate-form base material part (20). The base material part (20) contains reinforcing fibers longer than the fibers contained in the SMC and a second thermosetting resin, and the base material part (20) and the surface layer constituent part (30) are integrated by curing the first thermosetting resin and the second thermosetting resin.
Description
本開示は、熱硬化性樹脂と繊維を含む繊維強化樹脂成形体およびその製造方法に関する。
The present disclosure relates to a fiber-reinforced resin molded article containing a thermosetting resin and fibers, and a method for producing the same.
従来、基材としてのプリプレグにシートモールディングコンパウンドが積層されてなる繊維強化樹脂成形体が知られている(例えば、特許文献1、特に段落[0020]、参照)。このような繊維強化樹脂成形体では、シートモールディングコンパウンドによって、繊維強化樹脂成形体の表面の補強リブやボスのような局所的な突部等が形成される。
Conventionally, there has been known a fiber-reinforced resin molded product in which a sheet molding compound is laminated on a prepreg as a base material (for example, see Patent Document 1, particularly paragraph [0020]). In such a fiber-reinforced resin molded product, a local protrusion such as a reinforcing rib or a boss on the surface of the fiber-reinforced resin molded product is formed by the sheet molding compound.
上述した従来の繊維強化樹脂成形体において、シートモールディングコンパウンドからなる部位と基材との固定の安定化が望まれている。
に お い て In the above-mentioned conventional fiber-reinforced resin molded product, it is desired to stabilize the fixation between the portion composed of the sheet molding compound and the base material.
上記課題を解決するためになされた本願の発明の一側面は、
(1)板状の基材部の表裏の少なくとも一方の面に、繊維と第1の熱硬化性樹脂とを含む賦形用コンパウンドからなる表層構成部が部分的に積層されてなり、前記基材部は、前記賦形用コンパウンドに含まれる前記繊維よりも繊維長の長い補強繊維と第2の熱硬化性樹脂とを含み、前記第1の熱硬化性樹脂と前記第2の熱硬化性樹脂とが硬化することにより、前記基材部と前記表層構成部とが一体化されており、前記表層構成部は、前記基材部に埋め込まれ、かつ賦形部と前記賦形部以外の部分であるベース部とを有し、前記ベース部は、前記基材部と略面一に配置され、前記賦形部は、前記ベース部から前記基材部と反対側の方向へ突出する突部又は前記ベース部および前記基材部がなす面よりも前記基材部側に凹んだ凹部からなり、前記第2の熱硬化性樹脂は、前記第1の熱硬化性樹脂に比べて、ガラス転移温度が高い、又は、硬化時間が長い、繊維強化樹脂成形体。 One aspect of the present invention made in order to solve the above-mentioned problem is
(1) On at least one of the front and back surfaces of the plate-like base material portion, a surface layer component portion made of a shaping compound containing a fiber and a first thermosetting resin is partially laminated, and The material portion includes a reinforcing fiber having a longer fiber length than the fibers included in the shaping compound and a second thermosetting resin, and the first thermosetting resin and the second thermosetting resin When the resin is cured, the base portion and the surface layer forming portion are integrated, and the surface layer forming portion is embedded in the base portion, and other than the shaping portion and the shaping portion. A base portion that is a portion, wherein the base portion is disposed substantially flush with the base portion, and the shaping portion projects from the base portion in a direction opposite to the base portion. The base or the base portion and a concave portion recessed toward the base portion side than the surface formed by the base portion, 2 of the thermosetting resin, the than the first thermosetting resin, the glass transition temperature is high, or long curing time, the fiber-reinforced resin molded body.
(1)板状の基材部の表裏の少なくとも一方の面に、繊維と第1の熱硬化性樹脂とを含む賦形用コンパウンドからなる表層構成部が部分的に積層されてなり、前記基材部は、前記賦形用コンパウンドに含まれる前記繊維よりも繊維長の長い補強繊維と第2の熱硬化性樹脂とを含み、前記第1の熱硬化性樹脂と前記第2の熱硬化性樹脂とが硬化することにより、前記基材部と前記表層構成部とが一体化されており、前記表層構成部は、前記基材部に埋め込まれ、かつ賦形部と前記賦形部以外の部分であるベース部とを有し、前記ベース部は、前記基材部と略面一に配置され、前記賦形部は、前記ベース部から前記基材部と反対側の方向へ突出する突部又は前記ベース部および前記基材部がなす面よりも前記基材部側に凹んだ凹部からなり、前記第2の熱硬化性樹脂は、前記第1の熱硬化性樹脂に比べて、ガラス転移温度が高い、又は、硬化時間が長い、繊維強化樹脂成形体。 One aspect of the present invention made in order to solve the above-mentioned problem is
(1) On at least one of the front and back surfaces of the plate-like base material portion, a surface layer component portion made of a shaping compound containing a fiber and a first thermosetting resin is partially laminated, and The material portion includes a reinforcing fiber having a longer fiber length than the fibers included in the shaping compound and a second thermosetting resin, and the first thermosetting resin and the second thermosetting resin When the resin is cured, the base portion and the surface layer forming portion are integrated, and the surface layer forming portion is embedded in the base portion, and other than the shaping portion and the shaping portion. A base portion that is a portion, wherein the base portion is disposed substantially flush with the base portion, and the shaping portion projects from the base portion in a direction opposite to the base portion. The base or the base portion and a concave portion recessed toward the base portion side than the surface formed by the base portion, 2 of the thermosetting resin, the than the first thermosetting resin, the glass transition temperature is high, or long curing time, the fiber-reinforced resin molded body.
ここで、本明細書にて後述する硬化温度が高いとは、熱硬化性樹脂を一定時間で硬化させるために必要な温度が高い、という意味である。また、硬化時間が長いとは、熱硬化性樹脂を一定の温度で硬化させるために必要な時間が長い、という意味である。また、ガラス転移温度が高いとは、硬化前の熱硬化性樹脂のガラス転移温度を対比した際に当該温度が高い、という意味である。
Here, the high curing temperature described later in this specification means that the temperature required for curing the thermosetting resin in a certain period of time is high. Further, a long curing time means that the time required for curing the thermosetting resin at a certain temperature is long. The high glass transition temperature means that the temperature is high when the glass transition temperature of the thermosetting resin before curing is compared.
本願の発明の好ましい側面は、
(2)前記基材部は、熱硬化性樹脂発泡体からなり連続気泡を有する発泡シートの表裏のうち少なくとも一方の面に、前記補強繊維からなる繊維シートが積層されると共に、前記発泡シートと前記繊維シートとに前記第2の熱硬化性樹脂が含浸してなり、前記発泡シートのうち、厚み方向で前記表層構成部と重なる部分は、厚み方向で前記表層構成部と重ならない部分に比べて、厚み方向に圧縮されている、(1)に記載の繊維強化樹脂成形体。 Preferred aspects of the present invention are:
(2) The base material portion is formed by laminating a fiber sheet made of the reinforcing fiber on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells. The fiber sheet and the second thermosetting resin are impregnated, and the portion of the foam sheet that overlaps with the surface layer component in the thickness direction is compared with a portion that does not overlap with the surface layer component in the thickness direction. The fiber-reinforced resin molded article according to (1), which is compressed in a thickness direction.
(2)前記基材部は、熱硬化性樹脂発泡体からなり連続気泡を有する発泡シートの表裏のうち少なくとも一方の面に、前記補強繊維からなる繊維シートが積層されると共に、前記発泡シートと前記繊維シートとに前記第2の熱硬化性樹脂が含浸してなり、前記発泡シートのうち、厚み方向で前記表層構成部と重なる部分は、厚み方向で前記表層構成部と重ならない部分に比べて、厚み方向に圧縮されている、(1)に記載の繊維強化樹脂成形体。 Preferred aspects of the present invention are:
(2) The base material portion is formed by laminating a fiber sheet made of the reinforcing fiber on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells. The fiber sheet and the second thermosetting resin are impregnated, and the portion of the foam sheet that overlaps with the surface layer component in the thickness direction is compared with a portion that does not overlap with the surface layer component in the thickness direction. The fiber-reinforced resin molded article according to (1), which is compressed in a thickness direction.
本願の発明の好ましい側面は、
(3)前記基材部の前記少なくとも一方の面には、複数の前記表層構成部が互いに離れて設けられ、各表層構成部に前記賦形部が設けられている、(1)又は(2)に記載の繊維強化樹脂成形体。 Preferred aspects of the present invention are:
(3) On the at least one surface of the base member, a plurality of the surface layer components are provided apart from each other, and the shaping portion is provided on each surface layer component, (1) or (2). A) a fiber-reinforced resin molded article according to the above.
(3)前記基材部の前記少なくとも一方の面には、複数の前記表層構成部が互いに離れて設けられ、各表層構成部に前記賦形部が設けられている、(1)又は(2)に記載の繊維強化樹脂成形体。 Preferred aspects of the present invention are:
(3) On the at least one surface of the base member, a plurality of the surface layer components are provided apart from each other, and the shaping portion is provided on each surface layer component, (1) or (2). A) a fiber-reinforced resin molded article according to the above.
本願の発明の別の側面は、
(4)繊維と第1の熱硬化性樹脂とを含む賦形用コンパウンドと、前記賦形用コンパウンドに含まれる繊維よりも繊維長の長い補強繊維と第2の熱硬化性樹脂とを含む基材部用シートと、を用意し、前記賦形用コンパウンドを前記基材部用シートの表裏のうち少なくとも一方の面に部分的に重ね、加熱プレス成形により、前記第1の熱硬化性樹脂と前記第2の熱硬化性樹脂とを硬化させて、前記基材部用シートから形成した基材部と、前記賦形用コンパウンドから形成した表層構成部と、を一体化させて繊維強化樹脂成形体を形成し、前記表層構成部を形成する際に、前記表層構成部のうち前記基材部と反対側を向く面に、突部又は凹部からなる賦形部を形成し、前記第2の熱硬化性樹脂として、前記第1の熱硬化性樹脂に比べて、前記加熱プレス成形の温度において硬化時間が長いものを用いる、繊維強化樹脂成形体の製造方法。 Another aspect of the present invention is:
(4) A shaping compound including a fiber and a first thermosetting resin, and a base including a reinforcing fiber having a longer fiber length than a fiber included in the shaping compound and a second thermosetting resin. Material part sheet, and preparing the shaping compound partially on at least one of the front and back surfaces of the base part sheet, by hot press molding, the first thermosetting resin and The second thermosetting resin is cured, and the base portion formed from the base portion sheet and the surface layer forming portion formed from the shaping compound are integrated to form a fiber-reinforced resin molding. Forming a body, when forming the surface layer component, on the surface of the surface layer component facing the opposite side to the base member, forming a shaping portion consisting of a protrusion or a recess, the second As the thermosetting resin, compared with the first thermosetting resin, Curing time at a temperature of less molding used long, method for producing a fiber-reinforced resin molded body.
(4)繊維と第1の熱硬化性樹脂とを含む賦形用コンパウンドと、前記賦形用コンパウンドに含まれる繊維よりも繊維長の長い補強繊維と第2の熱硬化性樹脂とを含む基材部用シートと、を用意し、前記賦形用コンパウンドを前記基材部用シートの表裏のうち少なくとも一方の面に部分的に重ね、加熱プレス成形により、前記第1の熱硬化性樹脂と前記第2の熱硬化性樹脂とを硬化させて、前記基材部用シートから形成した基材部と、前記賦形用コンパウンドから形成した表層構成部と、を一体化させて繊維強化樹脂成形体を形成し、前記表層構成部を形成する際に、前記表層構成部のうち前記基材部と反対側を向く面に、突部又は凹部からなる賦形部を形成し、前記第2の熱硬化性樹脂として、前記第1の熱硬化性樹脂に比べて、前記加熱プレス成形の温度において硬化時間が長いものを用いる、繊維強化樹脂成形体の製造方法。 Another aspect of the present invention is:
(4) A shaping compound including a fiber and a first thermosetting resin, and a base including a reinforcing fiber having a longer fiber length than a fiber included in the shaping compound and a second thermosetting resin. Material part sheet, and preparing the shaping compound partially on at least one of the front and back surfaces of the base part sheet, by hot press molding, the first thermosetting resin and The second thermosetting resin is cured, and the base portion formed from the base portion sheet and the surface layer forming portion formed from the shaping compound are integrated to form a fiber-reinforced resin molding. Forming a body, when forming the surface layer component, on the surface of the surface layer component facing the opposite side to the base member, forming a shaping portion consisting of a protrusion or a recess, the second As the thermosetting resin, compared with the first thermosetting resin, Curing time at a temperature of less molding used long, method for producing a fiber-reinforced resin molded body.
本願の発明の好ましい側面は、
(5)前記基材部用シートとして、熱硬化性樹脂発泡体からなり連続気泡を有する発泡シートの表裏のうち少なくとも一方の面に、前記補強繊維からなる繊維シートが積層され、前記第2の熱硬化性樹脂が含浸したものを用いる、(4)に記載の繊維強化樹脂成形体の製造方法。 Preferred aspects of the present invention are:
(5) As the base member sheet, a fiber sheet made of the reinforcing fiber is laminated on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells, and The method for producing a fiber-reinforced resin molded product according to (4), wherein a molded product impregnated with a thermosetting resin is used.
(5)前記基材部用シートとして、熱硬化性樹脂発泡体からなり連続気泡を有する発泡シートの表裏のうち少なくとも一方の面に、前記補強繊維からなる繊維シートが積層され、前記第2の熱硬化性樹脂が含浸したものを用いる、(4)に記載の繊維強化樹脂成形体の製造方法。 Preferred aspects of the present invention are:
(5) As the base member sheet, a fiber sheet made of the reinforcing fiber is laminated on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells, and The method for producing a fiber-reinforced resin molded product according to (4), wherein a molded product impregnated with a thermosetting resin is used.
本願の発明の好ましい側面は、
(6)前記加熱プレス成形を行うための成形金型の成形面に、前記表層構成部の前記賦形部を形成するための表面形成部を複数設けておき、前記加熱プレス成形を行うにあたって、前記賦形用コンパウンドを複数枚用意し、それら複数枚の賦形用コンパウンドを、互いに離して前記成形面の前記表面形成部に重ねる、(4)又は(5)に記載の繊維強化樹脂成形体の製造方法。 Preferred aspects of the present invention are:
(6) A plurality of surface forming portions for forming the shaping portion of the surface layer forming portion are provided on a molding surface of a molding die for performing the hot press molding, and in performing the hot press molding, The fiber-reinforced resin molded article according to (4) or (5), wherein a plurality of the shaping compounds are prepared, and the plurality of shaping compounds are stacked on the surface forming portion of the molding surface while being separated from each other. Manufacturing method.
(6)前記加熱プレス成形を行うための成形金型の成形面に、前記表層構成部の前記賦形部を形成するための表面形成部を複数設けておき、前記加熱プレス成形を行うにあたって、前記賦形用コンパウンドを複数枚用意し、それら複数枚の賦形用コンパウンドを、互いに離して前記成形面の前記表面形成部に重ねる、(4)又は(5)に記載の繊維強化樹脂成形体の製造方法。 Preferred aspects of the present invention are:
(6) A plurality of surface forming portions for forming the shaping portion of the surface layer forming portion are provided on a molding surface of a molding die for performing the hot press molding, and in performing the hot press molding, The fiber-reinforced resin molded article according to (4) or (5), wherein a plurality of the shaping compounds are prepared, and the plurality of shaping compounds are stacked on the surface forming portion of the molding surface while being separated from each other. Manufacturing method.
上記(1)および(4)の側面では、基材部に含まれる第2の熱硬化性樹脂が、賦形用コンパウンドに含まれる第1の熱硬化性樹脂よりも、ガラス転移温度が高いか、又は、硬化時間が長くなっている。従って、繊維強化樹脂成形体の製造時に、第1の熱硬化性樹脂を硬化させてから、第2の熱硬化性樹脂を硬化させることができ、第1の熱硬化性樹脂が硬化して硬くなった表層構成部の形状に、基材部を追従させた状態に形成することが容易となる。これにより、表層構成部が基材部に埋め込まれて、賦形用コンパウンドからなる表層構成部と基材部との固定の安定を図ることが可能となる。また、表層構成部のうち突部又は凹部からなる賦形部以外の部分を、基材部と略面一に配置することで、突部の突出量又は凹部の深さについて寸法精度の安定化を図ることが可能となる。
In the above aspects (1) and (4), whether the second thermosetting resin contained in the base material has a higher glass transition temperature than the first thermosetting resin contained in the molding compound. Or, the curing time is long. Therefore, at the time of manufacturing the fiber-reinforced resin molded body, the first thermosetting resin can be cured before the second thermosetting resin is cured, and the first thermosetting resin is cured and hardened. It becomes easy to form the base layer portion in a state of following the shape of the resulting surface layer constituting portion. Thereby, the surface layer constituting portion is embedded in the base portion, and it is possible to stably fix the surface layer constituting portion formed of the shaping compound and the substrate portion. In addition, by arranging a portion other than the shaping portion formed of the protrusion or the concave portion of the surface layer constituting portion substantially flush with the base portion, stabilizing the dimensional accuracy with respect to the protrusion amount of the protrusion or the depth of the concave portion. Can be achieved.
上記(2)の側面では、基材部には、連続気泡を有する発泡シートが設けられる。そして、発泡シートのうち厚み方向で表層構成部と重なる部分は、厚み方向で表層構成部と重ならない部分に比べて、厚み方向に圧縮されている。当該側面によれば、発泡シートのうち厚み方向で表層構成部と重なる部分が圧縮されることによって、表層構成部を基材部に埋め込まれた状態に形成し易くすることができる。また、上記(5)の側面によっても、発泡シートのうち厚み方向で賦形用コンパウンドと重なる部分を圧縮することにより、表層構成部を基材部に埋め込まれた状態に形成し易くすることができる。
で は In the aspect of the above (2), a foam sheet having open cells is provided in the base material portion. The portion of the foam sheet that overlaps with the surface layer component in the thickness direction is compressed in the thickness direction as compared with the portion that does not overlap with the surface layer component in the thickness direction. According to the side surface, a portion of the foam sheet that overlaps the surface layer component in the thickness direction is compressed, so that the surface layer component can be easily formed in a state of being embedded in the base member. Also, by the side surface of the above (5), by compressing a portion of the foamed sheet that overlaps the shaping compound in the thickness direction, the surface layer constituting portion can be easily formed in a state embedded in the base material portion. it can.
上記(3)および(6)の側面では、突部又は凹部からなる賦形部が複数設けられる。当該側面によれば、複数の賦形部全てに亘って1つの賦形用コンパウンドからなる表層構成部が形成される場合に比べて、表層構成部を形成するための賦形用コンパウンドの使用量を少なくすることが可能となる。
で は In the side surfaces of the above (3) and (6), a plurality of shaping portions formed of protrusions or recesses are provided. According to this aspect, the amount of the shaping compound used to form the surface layer forming part is smaller than when the surface layer forming part including one shaping compound is formed over all of the plurality of shaping parts. Can be reduced.
図1には、本開示の一実施形態に係る繊維強化樹脂成形体10が示されている。本実施形態の繊維強化樹脂成形体10は、例えば、自転車の部品等に用いられる。繊維強化樹脂成形体10は、板状の基材部20を有し、その基材部20の表裏の一方の面である第1面20Aから、突部(具体的には、補強リブ13とボス14)が突出した構成となっている。なお、本実施形態では、基材部20の他方の面である第2面20B(図2参照)は、平坦面となっているが、第2面20Bは、凹凸を有していてもよいし、湾曲面であってもよい。
FIG. 1 shows a fiber-reinforced resin molded product 10 according to an embodiment of the present disclosure. The fiber-reinforced resin molded body 10 of the present embodiment is used for, for example, bicycle parts. The fiber-reinforced resin molded body 10 has a plate-shaped base portion 20, and a projection (specifically, a reinforcing rib 13 and a reinforcing rib 13) is formed from a first surface 20 </ b> A that is one of the front and back surfaces of the base portion 20. The boss 14) is configured to protrude. In the present embodiment, the second surface 20B (see FIG. 2), which is the other surface of the base member 20, is a flat surface, but the second surface 20B may have irregularities. Alternatively, it may be a curved surface.
具体的には、図2に示されるように、繊維強化樹脂成形体10は、基材部20の第1面20Aに、補強リブ13とボス14を構成する表層構成部30が部分的に積層されてなる。表層構成部30は、繊維と第1の熱硬化性樹脂とを含むシートモールディングコンパウンド(以下、SMCということとする。)からなる。なお、SMCは賦形用コンパウンドの一例である。本明細書中における賦形用コンパウンドとは、繊維と第1の熱硬化性樹脂とを含む材料のことを指す。また、賦形用コンパウンドは、反応を阻害しない程度において添加剤が加えられていても良い。
Specifically, as shown in FIG. 2, the fiber-reinforced resin molded body 10 is configured such that the reinforcing ribs 13 and the surface layer constituting parts 30 constituting the bosses 14 are partially laminated on the first surface 20A of the base part 20. Be done. The surface layer constituting section 30 is made of a sheet molding compound (hereinafter, referred to as SMC) containing fibers and a first thermosetting resin. The SMC is an example of the shaping compound. The shaping compound in this specification refers to a material containing fibers and a first thermosetting resin. An additive may be added to the shaping compound to such an extent that the reaction is not hindered.
図2及び図3に示されるように、表層構成部30は、基材部20と反対側を向く面に、賦形部を有する構成となっている。具体的には、表層構成部30は、薄板状をなして基材部20に重ねられるベース部31と、そのベース部31のうち基材部20と反対側を向く露出面31Aから突出する上述の賦形部としての表面突部32と、からなる。また、本実施形態では、補強リブ13を構成する表層構成部30と、ボス14を構成する表層構成部30とが、別に設けられ、互いに離れて配置されている。そして、各表層構成部30の表面突部32が、それぞれ補強リブ13とボス14を構成している。
及 び As shown in FIGS. 2 and 3, the surface layer constituting section 30 has a configuration in which a shaping section is provided on a surface facing the opposite side to the base section 20. Specifically, the surface layer constituting portion 30 is formed in a thin plate shape and overlaps the base portion 20, and the base portion 31 protrudes from the exposed surface 31 </ b> A facing the opposite side to the base portion 20 in the base portion 31. And a surface projection 32 as a shaping portion. Further, in the present embodiment, the surface layer constituting section 30 constituting the reinforcing rib 13 and the surface layer constituting section 30 constituting the boss 14 are separately provided and are arranged apart from each other. The surface protrusions 32 of each surface layer constituting portion 30 constitute the reinforcing rib 13 and the boss 14, respectively.
基材部20は、発泡シート21の表裏の両面に、1対の繊維シート22,22が積層された構成を有する。発泡シート21は、熱硬化性樹脂からなる連続気泡発泡体で構成され、発泡シート21には第2の熱硬化性樹脂が含浸している。また、本実施形態では、繊維シート22は、表層構成部30を構成するSMCの繊維よりも繊維長が長い補強繊維から構成されていると共に、繊維シート22にも第2の熱硬化性樹脂が含浸している。そして、発泡シート21と1対の繊維シート22,22に含浸した第2の熱硬化性樹脂が硬化することによって発泡シート21と1対の繊維シート22,22とが一体化されている。
The base member 20 has a structure in which a pair of fiber sheets 22 and 22 are laminated on both the front and back surfaces of the foam sheet 21. The foam sheet 21 is formed of an open-cell foam made of a thermosetting resin, and the foam sheet 21 is impregnated with a second thermosetting resin. In the present embodiment, the fiber sheet 22 is made of a reinforcing fiber having a longer fiber length than the fiber of the SMC forming the surface layer forming portion 30, and the second thermosetting resin is also applied to the fiber sheet 22. Impregnated. Then, the foam sheet 21 and the pair of fiber sheets 22, 22 are integrated by curing the second thermosetting resin impregnated in the foam sheet 21 and the pair of fiber sheets 22, 22.
ここで、表層構成部30のベース部31は、基材部20に埋め込まれていて、基材部20に密着している。表層構成部30のうち表面突部32以外の部分は、基材部20と略面一に配置されている。具体的には、表層構成部30のベース部31の露出面31Aと基材部20の第1面20Aとが略面一となっている。
Here, the base portion 31 of the surface layer constituting portion 30 is embedded in the base portion 20 and is in close contact with the base portion 20. Portions of the surface layer constituting section 30 other than the surface projections 32 are arranged substantially flush with the base section 20. Specifically, the exposed surface 31A of the base portion 31 of the surface layer forming portion 30 and the first surface 20A of the base portion 20 are substantially flush.
また、基材部20の発泡シート21のうち、厚み方向で表層構成部30と重なる部分は、厚み方向で表層構成部30と重ならない部分に比べて、ベース部31の厚みと略同じ分だけ圧縮されて薄くなっている。
Further, in the foamed sheet 21 of the base member 20, the portion overlapping the surface layer constituting portion 30 in the thickness direction is substantially the same as the thickness of the base portion 31 as compared with the portion not overlapping the surface layer constituting portion 30 in the thickness direction. It is compressed and thin.
繊維強化樹脂成形体10では、表層構成部30に含まれる第1の熱硬化性樹脂と、基材部20に含浸された第2の熱硬化性樹脂とが硬化することにより、表層構成部30と基材部20とが一体化されている。ここで、第2の熱硬化性樹脂は、第1の熱硬化性樹脂よりも、熱硬化し難くなっている。即ち、第2の熱硬化性樹脂は、第1の熱硬化性樹脂よりも、一定の温度で硬化するために必要な時間である硬化時間が長いか、又は、一定時間で硬化するために必要な温度である硬化温度が高くなっている。或いは、第2の熱硬化性樹脂は、第1の熱硬化性樹脂よりも、ガラス転移温度が高くなっている。
In the fiber-reinforced resin molded body 10, the first thermosetting resin included in the surface layer forming portion 30 and the second thermosetting resin impregnated in the base portion 20 are cured, so that the surface layer forming portion 30 is hardened. And the base member 20 are integrated. Here, the second thermosetting resin is harder to thermoset than the first thermosetting resin. That is, the second thermosetting resin has a longer curing time, which is a time required for curing at a constant temperature, or a longer curing time than the first thermosetting resin. The curing temperature, which is a high temperature, is high. Alternatively, the second thermosetting resin has a higher glass transition temperature than the first thermosetting resin.
繊維強化樹脂成形体10の各構成要素、即ち、発泡シート21、繊維シート22、第1の熱硬化性樹脂、第2の熱硬化性樹脂、及び、SMCの詳細については、以下のようになっている。
Details of each component of the fiber-reinforced resin molded body 10, that is, the foam sheet 21, the fiber sheet 22, the first thermosetting resin, the second thermosetting resin, and the SMC are as follows. ing.
発泡シート21を構成する発泡体としては、例えば、ウレタン樹脂発泡体、メラミン樹脂発泡体等が挙げられる。また、発泡シート21の厚みは、例えば、基材部20の厚み0.5~30mmに対して、0.1~29.5mmとなっている。
発 泡 Examples of the foam constituting the foam sheet 21 include a urethane resin foam and a melamine resin foam. The thickness of the foam sheet 21 is, for example, 0.1 to 29.5 mm with respect to the thickness of the base member 20 of 0.5 to 30 mm.
繊維シート22としては、例えば、炭素繊維、ガラス繊維、アラミド繊維等の繊維によって構成されたものを用いることができる。また、繊維シート22は、例えば、織物、編み物、不織布等の形態であってもよい。織物の織り方としては、平織、綾織、朱子織、三軸織等が挙げられる。また、繊維シート22は、一方向又は複数方向に配向した繊維から構成されていてもよい。なお、軽量化と剛性向上の観点から、繊維シート22を構成する繊維としては、炭素繊維が好ましい。また、剛性向上の観点から、繊維シート22は、繊維織物から構成されることが好ましい。熱硬化性樹脂が含浸した繊維シート22としては、例えば、プリプレグが挙げられる。
As the fiber sheet 22, for example, a sheet made of fibers such as carbon fiber, glass fiber, and aramid fiber can be used. Further, the fiber sheet 22 may be in the form of, for example, a woven fabric, a knitted fabric, or a nonwoven fabric. Examples of the weaving method of the woven fabric include plain weave, twill weave, satin weave, and triaxial weave. Further, the fiber sheet 22 may be composed of fibers oriented in one direction or a plurality of directions. From the viewpoint of weight reduction and improvement in rigidity, carbon fibers are preferable as the fibers constituting the fiber sheet 22. Further, from the viewpoint of improving rigidity, the fiber sheet 22 is preferably made of a fiber fabric. Examples of the fiber sheet 22 impregnated with a thermosetting resin include prepreg.
また、繊維シート22を構成する繊維としては、SMCに含まれる繊維より繊維長が長いものが好ましく、例えば、SMCの繊維よりも数平均繊維長が長いものが挙げられる。また、繊維シート22としては、例えば、連続繊維又は不連続繊維からなるものが挙げられる。繊維シート22は、剛性の観点から、5mm以上の繊維長のものが好ましい。また、繊維シート22は、剛性、第2の熱硬化性樹脂の含浸性、軽量性の観点から、目付量が90~400g/m2のものが好ましい。
The fibers constituting the fiber sheet 22 preferably have a longer fiber length than the fibers included in the SMC, and include, for example, fibers having a number average fiber length longer than that of the SMC fibers. Examples of the fiber sheet 22 include those made of continuous fibers or discontinuous fibers. The fiber sheet 22 preferably has a fiber length of 5 mm or more from the viewpoint of rigidity. The fiber sheet 22 preferably has a basis weight of 90 to 400 g / m 2 from the viewpoints of rigidity, impregnation of the second thermosetting resin, and lightness.
SMCとしては、例えば、炭素繊維、ガラス繊維等の繊維を含むものを用いることができる。なお、軽量化と剛性向上の観点から、SMCに含まれる繊維としては、炭素繊維が好ましい。SMCに含まれる繊維としては、30mm以下の繊維長のものが成形性の観点で好ましい。また、SMCに含まれる繊維としては、5mm以上の繊維長のものが剛性向上の観点から好ましい。
As the SMC, for example, those containing fibers such as carbon fiber and glass fiber can be used. From the viewpoint of weight reduction and improvement in rigidity, carbon fibers are preferable as the fibers contained in the SMC. As the fibers contained in the SMC, those having a fiber length of 30 mm or less are preferable from the viewpoint of moldability. Further, as the fibers contained in the SMC, those having a fiber length of 5 mm or more are preferable from the viewpoint of improving rigidity.
SMCの第1の熱硬化性樹脂としては、例えば、エポキシ樹脂、ビニールエステル樹脂、不飽和ポリエステル樹脂、フェノール樹脂、エポキシアクリレート樹脂、又は、これらの樹脂のうち2種類以上の樹脂の混合樹脂、等が挙げられる。
Examples of the first thermosetting resin of the SMC include an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, a phenol resin, an epoxy acrylate resin, or a mixed resin of two or more of these resins. Is mentioned.
なお、表層構成部30に設けられる補強リブ13としては、例えば、突出量が0.1~30mmで、最小幅が0.5~10mmであるものが挙げられる。また、ボス14としては、例えば、突出量が0.1~30mmで、内径と外径の差が0.5~10.0mmのものが挙げられる。
The reinforcing ribs 13 provided on the surface layer constituting section 30 include, for example, those having a protrusion amount of 0.1 to 30 mm and a minimum width of 0.5 to 10 mm. The boss 14 has, for example, a protrusion amount of 0.1 to 30 mm and a difference between the inner diameter and the outer diameter of 0.5 to 10.0 mm.
基材部20の第2の熱硬化性樹脂としては、例えば、エポキシ樹脂、フェノール樹脂、又は、これらの樹脂の混合樹脂、等が挙げられる。これらの樹脂を用いることにより、剛性の向上が図られる。
と し て As the second thermosetting resin of the base member 20, for example, an epoxy resin, a phenol resin, or a mixed resin of these resins is used. By using these resins, the rigidity can be improved.
繊維強化樹脂成形体10は、以下のようにして製造される。まず、複数のシートが用意される。具体的には、連続気泡を有する発泡シート21、1対の繊維シート22,22、及び、第1の熱硬化性樹脂を含むSMC30S、が用意される。発泡シート21と各繊維シート22には、第2の熱硬化性樹脂を含浸させておく。第2の硬化性樹脂としては、第1の硬化性樹脂に比べて、硬化温度が高いか、ガラス転移温度が高いか、又は、硬化時間が長いものを用いればよい。なお、第2の熱硬化性樹脂は、発泡シート21と繊維シート22のうち一方にのみ含浸させておいてもよい。また、発泡シート21としては、後述する加熱プレス成形での圧縮容易性、第2の熱硬化性樹脂の含浸性、軽量性、剛性の観点から、密度が5~80kg/m3のものを用いるのが好ましい。
The fiber-reinforced resin molded body 10 is manufactured as follows. First, a plurality of sheets are prepared. Specifically, a foam sheet 21 having open cells, a pair of fiber sheets 22, 22, and an SMC 30S containing a first thermosetting resin are prepared. The foam sheet 21 and each fiber sheet 22 are impregnated with a second thermosetting resin. As the second curable resin, a resin having a higher curing temperature, a higher glass transition temperature, or a longer curing time than the first curable resin may be used. Note that the second thermosetting resin may be impregnated into only one of the foam sheet 21 and the fiber sheet 22. Further, as the foam sheet 21, one having a density of 5 to 80 kg / m 3 is used from the viewpoint of ease of compression in hot press molding described later, impregnation of the second thermosetting resin, light weight, and rigidity. Is preferred.
本実施形態の例では、第1の熱硬化性樹脂としてビニールエステル樹脂とエポキシアクリレート樹脂との混合樹脂を用い、第2の熱硬化性樹脂として第1の熱硬化性樹脂よりも硬化時間が高く且つ硬化時間も長いフェノール樹脂を用いた。また、発泡シート21としてウレタン樹脂発泡体からなるものを用い、繊維シート22として炭素繊維織物からなるプリプレグ、SMCとして炭素繊維を有するものを用いた。
In the example of the present embodiment, a mixed resin of a vinyl ester resin and an epoxy acrylate resin is used as the first thermosetting resin, and the curing time is higher than that of the first thermosetting resin as the second thermosetting resin. A phenol resin having a long curing time was used. Further, a foam sheet 21 made of urethane resin foam was used, a fiber sheet 22 was made of a prepreg made of carbon fiber fabric, and an SMC having carbon fibers was used.
次いで、発泡シート21と繊維シート22とSMC30Sとが重ねられて、成形金型70によって加熱プレス成形される。
Next, the foam sheet 21, the fiber sheet 22, and the SMC 30 </ b> S are superimposed on each other, and are hot-pressed by a molding die 70.
図4には、成形金型70が示されている。同図に示されるように、成形金型70は、上型71と下型72とから構成される。本実施形態では、上型71の成形面は、平坦となっている一方、下型72の成形面には、補強リブ13とボス14をそれぞれ形成するための表面形成部として成形凹部73,74が設けられている。詳細には、成形凹部73は、溝状となっていると共に、成形凹部74は、円筒状の凹部となっている。なお、下型72の成形面のうち成形凹部73,74が設けられた部分以外は、平坦になっている。
FIG. 4 shows a molding die 70. As shown in the figure, the molding die 70 includes an upper die 71 and a lower die 72. In the present embodiment, the molding surface of the upper mold 71 is flat, while the molding surface of the lower mold 72 is formed as molding portions 73 and 74 as surface forming portions for forming the reinforcing ribs 13 and the bosses 14, respectively. Is provided. Specifically, the molding recess 73 has a groove shape, and the molding recess 74 has a cylindrical recess. It should be noted that the molding surface of the lower mold 72 is flat except for the portions where the molding recesses 73 and 74 are provided.
加熱プレス成形を行うにあたっては、まず、成形金型70が型開き状態にされて、SMC30Sが、下型72の成形凹部73,74を覆うように下型72の成形面に部分的に重ねられる(図4及び図6の(A)参照)。本実施形態では、成形凹部73を覆うSMC30Sと成形凹部74を覆うSMC30Sとは、別に設けられ、互いに離れて配置される。また、各SMC30Sは、各成形凹部73,74を満たすのに必要な量、即ち、補強リブ13、ボス14の形成に必要な量、よりも多い量となっている。
In performing the heat press molding, first, the molding die 70 is opened, and the SMC 30S is partially overlapped with the molding surface of the lower die 72 so as to cover the molding recesses 73 and 74 of the lower die 72. (See FIGS. 4 and 6A). In the present embodiment, the SMC 30S that covers the molding concave portion 73 and the SMC 30S that covers the molding concave portion 74 are provided separately from each other and are separated from each other. Further, the amount of each SMC 30S is larger than the amount required to fill each of the molding recesses 73 and 74, that is, the amount required to form the reinforcing rib 13 and the boss 14.
そして、発泡シート21の両面に1対の繊維シート22,22が重ねられた基材部用シート20Sが、SMC30Sの上に重ねられ、成形金型70が型閉じされる。すると、図5及び図6の(B)に示されるように、加熱されて流動性が生じたSMC30Sが、成形凹部73,74に流れ込む。また、SMC30Sのうち成形凹部73,74に入り切れなかった余剰部分は、薄板状となって成形凹部73,74の上に残る。一方、基材部用シート20S(特に、発泡シート21)は、成形金型70に加熱プレスされることにより圧縮される。
{Circle around (2)} The base member sheet 20S in which the pair of fiber sheets 22 and 22 are overlapped on both surfaces of the foam sheet 21 is overlapped on the SMC 30S, and the molding die 70 is closed. Then, as shown in FIGS. 5 and 6B, the heated SMC 30S having flowability flows into the molding recesses 73 and 74. In addition, the surplus portion of the SMC 30S that has not been able to enter the forming recesses 73, 74 remains in the form of a thin plate on the forming recesses 73, 74. On the other hand, the base part sheet 20S (particularly, the foam sheet 21) is compressed by being hot-pressed in the molding die 70.
ここで、上述のように、基材部用シート20Sの第2の熱硬化性樹脂は、SMC30Sの第1の熱硬化性樹脂よりも、硬化時間が長くなっている。従って、図6の(B)に示されるように、成形金型70内で、SMC30Sの第1の熱硬化性樹脂が、第2の熱硬化性樹脂よりも先に硬化することとなる(図6の(B)、図7の(A)及び図7の(B)では、第1と第2の熱硬化性樹脂のうち硬化しきった熱硬化性樹脂を含む部分が灰色で示されている)。なお、ここで、図8には、成形金型70内での一定の加熱温度における、第1及び第2の熱硬化性樹脂の硬化度と加熱時間との関係が概念的に示されていて、図7において第1と第2の熱硬化性樹脂がそれぞれ硬化しきったタイミングT1、T2のときが、それぞれ図6の(B)、図7の(B)に示す状態である。
Here, as described above, the curing time of the second thermosetting resin of the base material sheet 20S is longer than that of the first thermosetting resin of the SMC 30S. Therefore, as shown in FIG. 6B, in the molding die 70, the first thermosetting resin of the SMC 30S is cured before the second thermosetting resin (see FIG. 6B). 6 (B), FIG. 7 (A) and FIG. 7 (B), the portion including the completely cured thermosetting resin among the first and second thermosetting resins is shown in gray. ). Here, FIG. 8 conceptually shows the relationship between the degree of curing of the first and second thermosetting resins and the heating time at a constant heating temperature in the molding die 70. In FIG. 7, the timings T1 and T2 at which the first and second thermosetting resins are completely cured are the states shown in FIGS. 6B and 7B, respectively.
第1の熱硬化性樹脂が硬化すると、SMC30Sから表層構成部30が形成される。このとき、SMC30Sのうち成形凹部73,74に入り込んだ部分により、それぞれ補強リブ13とボス14(即ち、表面突部32)が形成されると共に、SMC30Sのうち成形凹部73,74に入り切らなかった薄板状の余剰部分により、ベース部31が形成される。
(4) When the first thermosetting resin is cured, the surface component 30 is formed from the SMC 30S. At this time, the reinforcing ribs 13 and the bosses 14 (that is, the surface protrusions 32) are respectively formed by the portions of the SMC 30S that have entered the forming recesses 73 and 74, and the SMC 30S does not completely enter the forming recesses 73 and 74. The base portion 31 is formed by the thin plate-shaped surplus portion.
ここで、図8に示されるように、第1の熱硬化性樹脂が硬化しきってからもタイミングT2までは、第2の熱硬化性樹脂は硬化しきっていないので、基材部用シート20Sが硬化しきっておらず、図6の(B)から図7の(A)への変化に示されるように、基材部用シート20Sを変形させて表層構成部30の形状に追従させることができる。これにより、ベース部31を基材部用シート20Sに埋め込んで、ベース部31と基材部用シート20Sとのうち下型72と対向する部分同士を略面一にすることができる。また、このとき、基材部用シート20Sの発泡シート21のうち、厚み方向で表層構成部30のベース部31と重なる部分は、厚み方向でベース部31と重ならない部分に比べて、ベース部31の厚みと略同じ分だけ圧縮されることとなる。
Here, as shown in FIG. 8, since the second thermosetting resin is not completely cured until timing T2 even after the first thermosetting resin is completely cured, the base material sheet 20S is Since it is not completely cured, as shown in the change from FIG. 6B to FIG. 7A, the base portion sheet 20S can be deformed to follow the shape of the surface layer constituting portion 30. . Thus, the base portion 31 is embedded in the base portion sheet 20S, and the portions of the base portion 31 and the base portion sheet 20S that face the lower mold 72 can be made substantially flush. At this time, the portion of the foam sheet 21 of the base portion sheet 20S that overlaps the base portion 31 of the surface layer constituting portion 30 in the thickness direction is smaller than the portion that does not overlap the base portion 31 in the thickness direction. It is compressed by the same amount as the thickness of 31.
図7の(B)に示されるように、基材部用シート20Sの第2の熱硬化性樹脂が硬化しきると、基材部用シート20Sが硬化する。このとき、発泡シート21と1対の繊維シート22,22とが一体化されて基材部20が形成されると共に、基材部20と表層構成部30とが一体化される(図5参照)。
る と As shown in FIG. 7B, when the second thermosetting resin of the base portion sheet 20S is completely cured, the base portion sheet 20S is cured. At this time, the base sheet 20 is formed by integrating the foam sheet 21 and the pair of fiber sheets 22, 22, and the base sheet 20 and the surface layer forming section 30 are integrated (see FIG. 5). ).
次いで、成形金型70が型開きされて、基材部20と表層構成部30が成形金型70から外され、図2に示される繊維強化樹脂成形体10が完成する。
Next, the molding die 70 is opened, the base member 20 and the surface layer constituting portion 30 are removed from the molding die 70, and the fiber-reinforced resin molded body 10 shown in FIG. 2 is completed.
本実施形態に係る繊維強化樹脂成形体10の構成及び繊維強化樹脂成形体10の製造方法に関する説明は以上である。次に、繊維強化樹脂成形体10及びその製造方法の作用効果について説明する。
The description of the configuration of the fiber-reinforced resin molded body 10 and the method of manufacturing the fiber-reinforced resin molded body 10 according to the embodiment has been described above. Next, the function and effect of the fiber-reinforced resin molded body 10 and the method of manufacturing the same will be described.
本実施形態の繊維強化樹脂成形体10及びその製造方法では、基材部20に含まれる第2の熱硬化性樹脂が、SMCに含まれる第1の熱硬化性樹脂よりも、硬化温度が高いか、ガラス転移温度が高いか、又は、硬化時間が長くなっている。従って、繊維強化樹脂成形体10の製造時に、SMCの第1の熱硬化性樹脂を硬化させてから、基材部用シート20Sの第2の熱硬化性樹脂を硬化させることができ、第1の熱硬化性樹脂が硬化して硬くなった表層構成部30の形状に、基材部20を追従させた状態に形成することが容易となる。これにより、表層構成部30が基材部20に埋め込まれて、SMCからなる表層構成部30と基材部20との固定の安定を図ることが可能となる。また、表層構成部30のベース部31を、基材部20と略面一に配置することで、表面突部32の突出量について寸法精度の安定化を図ることが可能となる。しかも、ベース部31が基材部20の第1面20Aと略面一になることにより、下型72と基材部用シート20Sとの間に、ベース部31の略厚み分のスペースが生じることを防ぐことができ、基材部20の厚み精度の向上が図られると共に、基材部20の設計において設計自由度の向上を図ることができる。
In the fiber-reinforced resin molded body 10 and the method of manufacturing the same according to the present embodiment, the second thermosetting resin included in the base member 20 has a higher curing temperature than the first thermosetting resin included in the SMC. The glass transition temperature is high, or the curing time is long. Therefore, at the time of manufacturing the fiber-reinforced resin molded body 10, the first thermosetting resin of the SMC can be cured, and then the second thermosetting resin of the base member sheet 20S can be cured. It becomes easy to form the base member 20 in a state in which the base member 20 follows the shape of the surface layer constituting portion 30 in which the thermosetting resin is cured and hardened. Thereby, the surface layer component 30 is embedded in the base member 20, and the fixing between the surface layer component 30 made of SMC and the substrate member 20 can be stabilized. In addition, by arranging the base portion 31 of the surface layer forming portion 30 substantially flush with the base material portion 20, it is possible to stabilize the dimensional accuracy of the amount of protrusion of the surface protrusion 32. In addition, since the base portion 31 is substantially flush with the first surface 20A of the base portion 20, a space corresponding to the thickness of the base portion 31 is generated between the lower mold 72 and the base material sheet 20S. In addition, the thickness accuracy of the base member 20 can be improved, and the design flexibility of the base member 20 can be improved.
本実施形態の繊維強化樹脂成形体10では、基材部20には、連続気泡を有する発泡シート21が設けられる。そして、発泡シート21のうち厚み方向で表層構成部30と重なる部分は、厚み方向で表層構成部30と重ならない部分に比べて、厚み方向に圧縮されている。本実施形態の繊維強化樹脂成形体10によれば、発泡シート21のうち厚み方向で表層構成部30と重なる部分を圧縮することによって、表層構成部30を基材部20に埋め込まれた状態に形成し易くすることができ、ベース部31と基材部20の第1面20Aとを略面一に配置し易くすることができる。また、本実施形態の繊維強化樹脂成形体10の製造方法によっても、発泡シート21のうち厚み方向でSMC30Sと重なる部分を圧縮することにより、表層構成部30を基材部20に埋め込まれた状態に形成し易くすることができる。しかも、本実施形態によれば、発泡シート21によって加熱プレス成形時の歪みを吸収し、基材部20の第2面20Bにおいて厚み方向で表層構成部30と重なる部分に、ヒケ等が発生することを抑制可能となり、第2面20Bが不均一な外観になることを抑制可能となる。
繊 維 In the fiber-reinforced resin molded body 10 of the present embodiment, the base sheet 20 is provided with the foam sheet 21 having open cells. The portion of the foam sheet 21 that overlaps the surface layer component 30 in the thickness direction is compressed in the thickness direction compared to the portion that does not overlap the surface layer component 30 in the thickness direction. According to the fiber-reinforced resin molded body 10 of the present embodiment, by compressing a portion of the foam sheet 21 that overlaps the surface layer component 30 in the thickness direction, the surface layer component 30 is embedded in the base member 20. The base portion 31 and the first surface 20A of the base portion 20 can be easily arranged substantially flush. Also, according to the method of manufacturing the fiber-reinforced resin molded body 10 of the present embodiment, the state where the surface layer constituting portion 30 is embedded in the base portion 20 by compressing the portion of the foam sheet 21 that overlaps the SMC 30S in the thickness direction. Can be easily formed. Moreover, according to the present embodiment, the foam sheet 21 absorbs the distortion at the time of hot press molding, and sink marks and the like are generated in a portion of the second surface 20B of the base member 20 that overlaps the surface layer constituting portion 30 in the thickness direction. This can be suppressed, and the second surface 20B can be prevented from having an uneven appearance.
本実施形態では、表面突部32が設けられる表層構成部30が複数設けられ、それら複数の表層構成部30が互いに離れて配置される。本実施形態によれば、複数の表面突部32全てに亘って1つのSMCからなる表層構成部30を形成される場合に比べて、表層構成部30を形成するためのSMCの使用量を少なくすることが可能となる。
In the present embodiment, a plurality of surface layer components 30 provided with the surface protrusions 32 are provided, and the plurality of surface layer components 30 are arranged apart from each other. According to the present embodiment, the amount of SMC used to form the surface layer component 30 is reduced as compared with the case where the surface layer component 30 including one SMC is formed over all of the plurality of surface protrusions 32. It is possible to do.
[確認実験]
以下、繊維強化樹脂成形体10を上述の製造方法で製造した実験例について説明する。 [Confirmation experiment]
Hereinafter, an experimental example in which the fiber-reinforced resin moldedbody 10 is manufactured by the above-described manufacturing method will be described.
以下、繊維強化樹脂成形体10を上述の製造方法で製造した実験例について説明する。 [Confirmation experiment]
Hereinafter, an experimental example in which the fiber-reinforced resin molded
<材料>
本実験例では、繊維強化樹脂成形体10を構成する各構成要素について、以下の材料を用いた。
発泡シート21:株式会社イノアックコーポレーション製の「バソテクト(登録商標)G+」(密度:9.2kg/m3、厚み5.0mmで、200mm×200mmのサイズにカットしたものを用いた。)
繊維シート22:東邦テナックス株式会社製の「W-3161-L」(連続繊維からなる炭素繊維織物で、目付量が200g/m2。発泡シート21と同様のサイズにカットしたものを用いた。)
第2の熱硬化性樹脂:住友ベークライト株式会社製の「スミライトレジン(登録商標)PR-55791」(フェノール樹脂。ガラス転移温度:151℃)
シートモールディングコンパウンド(SMC):三菱ケミカル株式会社製の「パイロフィル(登録商標) STR120N131」(厚み2.0mm、繊維長25.4mm。第1の熱硬化性樹脂としてビニールエステル樹脂とエポキシアクリレート樹脂の混合樹脂を含有。ガラス転移温度:130℃) <Material>
In this experimental example, the following materials were used for each component constituting the fiber-reinforced resin moldedbody 10.
Foam sheet 21: Inoac Corporation manufactured "Basotect (R) G +" (Density: 9.2 kg / m 3, a thickness 5.0 mm, was used which was cut to a size of 200 mm × 200 mm.)
Fiber sheet 22: “W-3161-L” (manufactured by Toho Tenax Co., Ltd.) (a carbon fiber woven fabric composed of continuous fibers, with a basis weight of 200 g / m 2 , cut to the same size as thefoam sheet 21). )
Second thermosetting resin: "Sumilite Resin (registered trademark) PR-55791" manufactured by Sumitomo Bakelite Co., Ltd. (phenol resin; glass transition temperature: 151 ° C.)
Sheet molding compound (SMC): "Pyrofil (registered trademark) STR120N131" (2.0 mm thick, 25.4 mm fiber length) manufactured by Mitsubishi Chemical Corporation. Mixing of vinyl ester resin and epoxy acrylate resin as first thermosetting resin Contains resin, glass transition temperature: 130 ° C)
本実験例では、繊維強化樹脂成形体10を構成する各構成要素について、以下の材料を用いた。
発泡シート21:株式会社イノアックコーポレーション製の「バソテクト(登録商標)G+」(密度:9.2kg/m3、厚み5.0mmで、200mm×200mmのサイズにカットしたものを用いた。)
繊維シート22:東邦テナックス株式会社製の「W-3161-L」(連続繊維からなる炭素繊維織物で、目付量が200g/m2。発泡シート21と同様のサイズにカットしたものを用いた。)
第2の熱硬化性樹脂:住友ベークライト株式会社製の「スミライトレジン(登録商標)PR-55791」(フェノール樹脂。ガラス転移温度:151℃)
シートモールディングコンパウンド(SMC):三菱ケミカル株式会社製の「パイロフィル(登録商標) STR120N131」(厚み2.0mm、繊維長25.4mm。第1の熱硬化性樹脂としてビニールエステル樹脂とエポキシアクリレート樹脂の混合樹脂を含有。ガラス転移温度:130℃) <Material>
In this experimental example, the following materials were used for each component constituting the fiber-reinforced resin molded
Foam sheet 21: Inoac Corporation manufactured "Basotect (R) G +" (Density: 9.2 kg / m 3, a thickness 5.0 mm, was used which was cut to a size of 200 mm × 200 mm.)
Fiber sheet 22: “W-3161-L” (manufactured by Toho Tenax Co., Ltd.) (a carbon fiber woven fabric composed of continuous fibers, with a basis weight of 200 g / m 2 , cut to the same size as the
Second thermosetting resin: "Sumilite Resin (registered trademark) PR-55791" manufactured by Sumitomo Bakelite Co., Ltd. (phenol resin; glass transition temperature: 151 ° C.)
Sheet molding compound (SMC): "Pyrofil (registered trademark) STR120N131" (2.0 mm thick, 25.4 mm fiber length) manufactured by Mitsubishi Chemical Corporation. Mixing of vinyl ester resin and epoxy acrylate resin as first thermosetting resin Contains resin, glass transition temperature: 130 ° C)
<成形条件>
本実験例の加熱プレス成形の成形条件としては、成形温度を150℃、成形圧力を20MPa、成形時間を10分とした。 <Molding conditions>
The molding conditions of the heat press molding of this experimental example were a molding temperature of 150 ° C., a molding pressure of 20 MPa, and a molding time of 10 minutes.
本実験例の加熱プレス成形の成形条件としては、成形温度を150℃、成形圧力を20MPa、成形時間を10分とした。 <Molding conditions>
The molding conditions of the heat press molding of this experimental example were a molding temperature of 150 ° C., a molding pressure of 20 MPa, and a molding time of 10 minutes.
<実験結果>
上記の材料及び成形条件で、加熱プレス成形を行ったところ、補強リブ13とボス14が形成されると共に、表層構成部30のベース部31と基材部20の第1面20Aとが面一となった繊維強化樹脂成形体10が得られた。具体的には、繊維強化樹脂成形体10において、補強リブ13とボス14(即ち、表面突部32)を除いた部分の厚みは、1.0mmとなった。詳細には、繊維強化樹脂成形体10において基材部20と表層構成部30が厚み方向で重なっていない部分では、発泡シート21が0.50mm、各繊維シート22が0.25mmであった。また、繊維強化樹脂成形体10において基材部20と表層構成部30が厚み方向で重なっている部分では、発泡シート21が0.10mm、各繊維シート22が0.25mm、表層構成部30のベース部31が0.40mmであった。 <Experimental results>
When heat press molding was performed using the above-described materials and molding conditions, the reinforcingribs 13 and the bosses 14 were formed, and the base portion 31 of the surface layer constituting portion 30 and the first surface 20A of the base portion 20 were flush with each other. Was obtained. Specifically, in the fiber-reinforced resin molded body 10, the thickness of the portion excluding the reinforcing rib 13 and the boss 14 (that is, the surface protrusion 32) was 1.0 mm. In detail, in the part where the base material part 20 and the surface layer constituting part 30 do not overlap in the thickness direction in the fiber-reinforced resin molded body 10, the foam sheet 21 is 0.50 mm, and each fiber sheet 22 is 0.25 mm. Further, in the portion where the base material portion 20 and the surface layer constituting portion 30 overlap in the thickness direction in the fiber reinforced resin molded body 10, the foam sheet 21 is 0.10 mm, each fiber sheet 22 is 0.25 mm, and the surface layer constituting portion 30 The base 31 was 0.40 mm.
上記の材料及び成形条件で、加熱プレス成形を行ったところ、補強リブ13とボス14が形成されると共に、表層構成部30のベース部31と基材部20の第1面20Aとが面一となった繊維強化樹脂成形体10が得られた。具体的には、繊維強化樹脂成形体10において、補強リブ13とボス14(即ち、表面突部32)を除いた部分の厚みは、1.0mmとなった。詳細には、繊維強化樹脂成形体10において基材部20と表層構成部30が厚み方向で重なっていない部分では、発泡シート21が0.50mm、各繊維シート22が0.25mmであった。また、繊維強化樹脂成形体10において基材部20と表層構成部30が厚み方向で重なっている部分では、発泡シート21が0.10mm、各繊維シート22が0.25mm、表層構成部30のベース部31が0.40mmであった。 <Experimental results>
When heat press molding was performed using the above-described materials and molding conditions, the reinforcing
この繊維強化樹脂成形体10では、基材部20とSMCからなる表層構成部30とが十分に固定されていることが確認できたと共に、寸法精度が良好であった。さらに、基材部20の第2面20Bにおいて厚み方向で表層構成部30と重なる部分は、ヒケ等が生じて不均一な外観になることもなく、良好な外観であった。
で は In this fiber-reinforced resin molded body 10, it was confirmed that the base member 20 and the surface layer constituting portion 30 made of SMC were sufficiently fixed, and the dimensional accuracy was good. Furthermore, the portion of the second surface 20B of the base material portion 20 that overlaps the surface layer constituting portion 30 in the thickness direction did not have an uneven appearance due to sink marks or the like, and had a good appearance.
なお、上記同様の成形温度及び成形圧で、加熱プレス成形の成形時間を3分とした場合、SMCの第1の熱硬化性樹脂が硬化していることが確認できた一方で、第2の熱硬化性樹脂が硬化し切っておらず、成形金型70から基材部20を外す際に、基材部20が変形した。即ち、成形時間が3分経ったタイミングは、図8に示すタイミングT1以降で、タイミングT2の前であると考えられる。成形時間が10分の場合、図8に示すタイミングT2を経過するため、SMCの第1の熱硬化性樹脂と、発泡シート21及び繊維シート22に含浸した第2の熱硬化性樹脂と、の両方が硬化しきり、上述のような良好な状態の繊維強化樹脂成形体10を製造することができる。
When the molding time of the hot press molding was set to 3 minutes at the same molding temperature and molding pressure as above, while it was confirmed that the first thermosetting resin of the SMC was cured, the second The thermosetting resin was not completely cured, and the base member 20 was deformed when the base member 20 was removed from the molding die 70. That is, the timing at which the molding time has passed for 3 minutes is considered to be after the timing T1 shown in FIG. 8 and before the timing T2. When the molding time is 10 minutes, since the timing T2 shown in FIG. 8 elapses, the first thermosetting resin of the SMC and the second thermosetting resin impregnated in the foam sheet 21 and the fiber sheet 22 are mixed. Both are completely cured, and the fiber-reinforced resin molded body 10 in the favorable state as described above can be manufactured.
[他の実施形態]
(1)上記実施形態では、表層構成部30のうち基材部20と反対側を向く面に、賦形部として、表面突部32が設けられていたが、図9及び図10に示されるように、凹部32Vが設けられていてもよい。この場合においても、表層構成部30のベース部31を、基材部20と略面一に配置することで、凹部32Vの深さについて寸法精度の安定化を図ることが可能となる。なお、このような凹部32Vは、溝であってもよいし、穴であってもよい。 [Other embodiments]
(1) In the above embodiment, thesurface projection 32 is provided as a shaping portion on the surface of the surface layer constituting portion 30 facing the side opposite to the base material portion 20. However, this is shown in FIGS. 9 and 10. As described above, the concave portion 32V may be provided. Also in this case, by arranging the base portion 31 of the surface layer forming portion 30 substantially flush with the base portion 20, it is possible to stabilize the dimensional accuracy of the depth of the concave portion 32V. In addition, such a concave portion 32V may be a groove or a hole.
(1)上記実施形態では、表層構成部30のうち基材部20と反対側を向く面に、賦形部として、表面突部32が設けられていたが、図9及び図10に示されるように、凹部32Vが設けられていてもよい。この場合においても、表層構成部30のベース部31を、基材部20と略面一に配置することで、凹部32Vの深さについて寸法精度の安定化を図ることが可能となる。なお、このような凹部32Vは、溝であってもよいし、穴であってもよい。 [Other embodiments]
(1) In the above embodiment, the
(2)上記実施形態において、補強リブ13とボス14とをそれぞれ構成する2つの表面突部32,32同士が、1つの表層構成部30に設けられていてもよい(即ち、1枚のSMCから形成されてもよい)。
(2) In the above embodiment, two surface projections 32, 32 constituting the reinforcing rib 13 and the boss 14, respectively, may be provided in one surface layer component 30 (ie, one SMC). May be formed).
(3)上記実施形態では、基材部20が、繊維シート22を発泡シート21の表裏の両面に積層した構成であったが、繊維シート22を発泡シート21の表裏の一方の面のみに積層した構成であってもよい。この場合、表層構成部30は、基材部20に対して、繊維シート22側から積層されていてもよいし、図11に示されるように発泡シート21側から積層されていてもよい。
(3) In the above embodiment, the base member 20 has the configuration in which the fiber sheet 22 is laminated on both the front and back surfaces of the foam sheet 21, but the fiber sheet 22 is laminated on only one of the front and back surfaces of the foam sheet 21. The configuration may be as follows. In this case, the surface layer constituting portion 30 may be laminated on the base material portion 20 from the fiber sheet 22 side, or may be laminated on the foam sheet 21 side as shown in FIG.
(4)上記実施形態において、発泡シート21と繊維シート22が積層された基材部20の構成として、発泡シート21が2枚以上設けられる構成であってもよいし、繊維シート22が3枚以上設けられる構成であってもよい。これらの場合、基材部20が、発泡シート21と繊維シート22を一枚ずつ交互に積層した構成であってもよいし、隣り合う発泡シート21同士又は隣り合う繊維シート22同士を含む構成であってもよい。また、これらの場合、基材部20のうち表層構成部30が積層される最外層は、発泡シート21によって構成されていてもよいし、繊維シート22によって構成されていてもよい。
(4) In the above embodiment, as the configuration of the base member 20 in which the foam sheet 21 and the fiber sheet 22 are laminated, a configuration in which two or more foam sheets 21 are provided or three fiber sheets 22 may be provided. The configuration provided above may be used. In these cases, the base member 20 may have a configuration in which the foam sheet 21 and the fiber sheet 22 are alternately laminated one by one, or a configuration including adjacent foam sheets 21 or adjacent fiber sheets 22. There may be. In these cases, the outermost layer of the base member 20 on which the surface layer constituting portion 30 is laminated may be constituted by the foam sheet 21 or may be constituted by the fiber sheet 22.
(5)上記実施形態では、基材部20を構成するシートが、発泡シート21と繊維シート22であったが、繊維シート22のみであってもよい。この構成として、例えば、基材部20がプリプレグからなる構成が挙げられる。
(5) In the above embodiment, the sheets constituting the base member 20 are the foam sheet 21 and the fiber sheet 22, but may be only the fiber sheet 22. As this configuration, for example, a configuration in which the base member 20 is made of a prepreg is given.
(6)上記実施形態において、表層構成部30が、基材部20の表裏の両面に設けられていてもよい。この場合、繊維強化樹脂成形体10を製造する際に、基材部用シート20Sの表裏の両面にSMC30Sが重ねられる。
(6) In the above embodiment, the surface layer constituting section 30 may be provided on both the front and back surfaces of the base section 20. In this case, when manufacturing the fiber-reinforced resin molded body 10, the SMC 30S is overlaid on both the front and back surfaces of the base material sheet 20S.
(7)上記実施形態では、発泡シート21と繊維シート22とに含浸する熱硬化性樹脂が同じであったが、異なっていてもよい。この場合、発泡シート21に含浸する熱硬化性樹脂と、繊維シート22に含浸する熱硬化性樹脂とは、それぞれ、SMCを構成する第1の熱硬化性樹脂に比べて、硬化温度が高いか、又は、硬化時間が長いものが用いられる。
(7) In the above embodiment, the thermosetting resin impregnated in the foam sheet 21 and the fiber sheet 22 is the same, but may be different. In this case, the thermosetting resin impregnating the foamed sheet 21 and the thermosetting resin impregnating the fiber sheet 22 each have a higher curing temperature than the first thermosetting resin constituting the SMC. Alternatively, one having a long curing time is used.
(8)上記実施形態において、表層構成部30の表面突部32は、例えば、突条、突壁、棒状の突部であってもよい。
(8) In the above embodiment, the surface protrusion 32 of the surface layer constituting portion 30 may be, for example, a ridge, a protrusion wall, or a rod-like protrusion.
本発明を特定の態様を参照して詳細に説明したが、本発明の精神と範囲を離れることなく様々な変更および修正が可能であることは、当業者にとって明らかである。
なお、本願は、2018年8月8日付で出願された日本国特許出願(特願2018-149636号)に基づいており、その全体が引用により援用される。また、ここに引用されるすべての参照は全体として取り込まれる。 Although the present invention has been described in detail with reference to particular embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
This application is based on a Japanese patent application filed on Aug. 8, 2018 (Japanese Patent Application No. 2018-149636), which is incorporated by reference in its entirety. Also, all references cited herein are incorporated in their entirety.
なお、本願は、2018年8月8日付で出願された日本国特許出願(特願2018-149636号)に基づいており、その全体が引用により援用される。また、ここに引用されるすべての参照は全体として取り込まれる。 Although the present invention has been described in detail with reference to particular embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
This application is based on a Japanese patent application filed on Aug. 8, 2018 (Japanese Patent Application No. 2018-149636), which is incorporated by reference in its entirety. Also, all references cited herein are incorporated in their entirety.
10 繊維強化樹脂成形体
20 基材部
30 表層構成部 DESCRIPTION OFSYMBOLS 10 Fiber-reinforced resin molded body 20 Substrate part 30 Surface layer part
20 基材部
30 表層構成部 DESCRIPTION OF
Claims (6)
- 板状の基材部の表裏の少なくとも一方の面に、繊維と第1の熱硬化性樹脂とを含む賦形用コンパウンドからなる表層構成部が部分的に積層されてなり、
前記基材部は、前記賦形用コンパウンドに含まれる前記繊維よりも繊維長の長い補強繊維と第2の熱硬化性樹脂とを含み、
前記第1の熱硬化性樹脂と前記第2の熱硬化性樹脂とが硬化することにより、前記基材部と前記表層構成部とが一体化されており、
前記表層構成部は、前記基材部に埋め込まれ、かつ賦形部と前記賦形部以外の部分であるベース部とを有し、
前記ベース部は、前記基材部と略面一に配置され、
前記賦形部は、前記ベース部から前記基材部と反対側の方向へ突出する突部又は前記ベース部および前記基材部がなす面よりも前記基材部側に凹んだ凹部からなり、
前記第2の熱硬化性樹脂は、前記第1の熱硬化性樹脂に比べて、ガラス転移温度が高い、又は、硬化時間が長い、繊維強化樹脂成形体。 On at least one of the front and back surfaces of the plate-shaped substrate portion, a surface layer component portion formed of a shaping compound containing fibers and a first thermosetting resin is partially laminated,
The base portion includes a reinforcing fiber and a second thermosetting resin having a longer fiber length than the fibers included in the shaping compound,
When the first thermosetting resin and the second thermosetting resin are cured, the base portion and the surface layer constituting portion are integrated,
The surface layer constituting portion is embedded in the base portion, and has a base portion that is a portion other than the shaping portion and the shaping portion,
The base portion is disposed substantially flush with the base portion,
The shaping portion comprises a protrusion protruding from the base portion in a direction opposite to the base portion or a concave portion recessed toward the base portion side from a surface formed by the base portion and the base portion,
The second thermosetting resin is a fiber-reinforced resin molded product having a higher glass transition temperature or a longer curing time than the first thermosetting resin. - 前記基材部は、熱硬化性樹脂発泡体からなり連続気泡を有する発泡シートの表裏のうち少なくとも一方の面に、前記補強繊維からなる繊維シートが積層されると共に、前記発泡シートと前記繊維シートとに前記第2の熱硬化性樹脂が含浸してなり、
前記発泡シートのうち、厚み方向で前記表層構成部と重なる部分は、厚み方向で前記表層構成部と重ならない部分に比べて、厚み方向に圧縮されている、請求項1に記載の繊維強化樹脂成形体。 The base material portion is formed by laminating a fiber sheet made of the reinforcing fiber on at least one of the front and back surfaces of a foam sheet made of a thermosetting resin foam and having open cells, and the foam sheet and the fiber sheet And the second thermosetting resin is impregnated,
2. The fiber-reinforced resin according to claim 1, wherein a portion of the foam sheet that overlaps with the surface layer in the thickness direction is compressed in a thickness direction as compared with a portion that does not overlap with the surface layer in the thickness direction. Molded body. - 前記基材部の前記少なくとも一方の面には、複数の前記表層構成部が互いに離れて設けられ、各表層構成部に前記賦形部が設けられている、請求項1又は2に記載の繊維強化樹脂成形体。 The fiber according to claim 1, wherein a plurality of the surface layer components are provided apart from each other on the at least one surface of the base member, and the shaping portion is provided on each surface layer component. Reinforced resin molding.
- 繊維と第1の熱硬化性樹脂とを含む賦形用コンパウンドと、前記賦形用コンパウンドに含まれる繊維よりも繊維長の長い補強繊維と第2の熱硬化性樹脂とを含む基材部用シートと、を用意し、
前記賦形用コンパウンドを前記基材部用シートの表裏のうち少なくとも一方の面に部分的に重ね、
加熱プレス成形により、前記第1の熱硬化性樹脂と前記第2の熱硬化性樹脂とを硬化させて、前記基材部用シートから形成した基材部と、前記賦形用コンパウンドから形成した表層構成部と、を一体化させて繊維強化樹脂成形体を形成し、
前記表層構成部を形成する際に、前記表層構成部のうち前記基材部と反対側を向く面に、突部又は凹部からなる賦形部を形成し、
前記第2の熱硬化性樹脂として、前記第1の熱硬化性樹脂に比べて、前記加熱プレス成形の温度において硬化時間が長いものを用いる、繊維強化樹脂成形体の製造方法。 A shaping compound including fibers and a first thermosetting resin, and a base material including a reinforcing fiber having a longer fiber length than the fibers included in the shaping compound and a second thermosetting resin Prepare a sheet and
The shaping compound partially overlaps at least one of the front and back surfaces of the base portion sheet,
The first thermosetting resin and the second thermosetting resin were cured by hot press molding, and were formed from the base portion formed from the base portion sheet and the shaping compound. Forming a fiber-reinforced resin molded body by integrating the surface layer component and
When forming the surface layer component, on the surface of the surface layer component facing the opposite side to the base member, to form a shaping portion consisting of a protrusion or a recess,
A method for producing a fiber-reinforced resin molded article, wherein a resin having a longer curing time at the temperature of the hot press molding than the first thermosetting resin is used as the second thermosetting resin. - 前記基材部用シートとして、熱硬化性樹脂発泡体からなり連続気泡を有する発泡シートの表裏のうち少なくとも一方の面に、前記補強繊維からなる繊維シートが積層され、前記第2の熱硬化性樹脂が含浸したものを用いる、請求項4に記載の繊維強化樹脂成形体の製造方法。 As the base part sheet, a fiber sheet made of the reinforcing fiber is laminated on at least one of the front and back surfaces of a foamed sheet made of a thermosetting resin foam and having open cells, and the second thermosetting sheet is formed. The method for producing a fiber-reinforced resin molded product according to claim 4, wherein a resin-impregnated resin molded product is used.
- 前記加熱プレス成形を行うための成形金型の成形面に、前記表層構成部の前記賦形部を形成するための表面形成部を複数設けておき、
前記加熱プレス成形を行うにあたって、前記賦形用コンパウンドを複数枚用意し、それら複数枚の賦形用コンパウンドを、互いに離して前記成形面の前記表面形成部に重ねる、請求項4又は5に記載の繊維強化樹脂成形体の製造方法。 On a molding surface of a molding die for performing the heat press molding, a plurality of surface forming portions for forming the shaping portion of the surface layer constituting portion are provided,
6. The method according to claim 4, wherein in performing the hot press molding, a plurality of the shaping compounds are prepared, and the plurality of shaping compounds are separated from each other and overlap with the surface forming portion of the forming surface, 6. A method for producing a fiber-reinforced resin molded article.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01160603A (en) * | 1987-12-18 | 1989-06-23 | Kasai Kogyo Co Ltd | Core structure of automotive interior trim |
JPH03142206A (en) * | 1989-10-28 | 1991-06-18 | Sekisui Chem Co Ltd | Molding method for thermosetting resin |
JPH08174580A (en) * | 1994-12-22 | 1996-07-09 | Sekisui Chem Co Ltd | Manufacture of molded item of thermosetting resin |
WO2015178141A1 (en) * | 2014-05-21 | 2015-11-26 | 株式会社イノアックコーポレーション | Carbon fiber composite material |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000302062A (en) | 1999-04-16 | 2000-10-31 | Mitsubishi Rayon Co Ltd | Straightening plate |
JP5315692B2 (en) * | 2006-09-28 | 2013-10-16 | 東レ株式会社 | Manufacturing method of fiber reinforced plastic |
JP5572947B2 (en) * | 2007-06-04 | 2014-08-20 | 東レ株式会社 | Molding material, fiber reinforced plastic, and production method thereof |
JP5950149B2 (en) | 2011-09-29 | 2016-07-13 | 三菱レイヨン株式会社 | A method for producing a fiber-reinforced resin structure. |
EP2682422A1 (en) * | 2012-07-03 | 2014-01-08 | DSM IP Assets B.V. | Thermosetting resin compositions comprising homogeneously distributed long reinforcing fibers |
US20150266260A1 (en) * | 2012-12-26 | 2015-09-24 | Toray Industries, Inc. | Molded product having hollow structure and process for producing same |
WO2016145158A1 (en) * | 2015-03-10 | 2016-09-15 | Zephyros, Inc. | Composites with thermoplastic epoxy polymeric phase, articles such as carriers made therewith and associated methods |
EP3342805B1 (en) * | 2016-12-30 | 2021-03-24 | Fundacion Gaiker | Prepreg, process for manufacturing the prepreg, part including the prepreg and process for manufacuring the part |
-
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01160603A (en) * | 1987-12-18 | 1989-06-23 | Kasai Kogyo Co Ltd | Core structure of automotive interior trim |
JPH03142206A (en) * | 1989-10-28 | 1991-06-18 | Sekisui Chem Co Ltd | Molding method for thermosetting resin |
JPH08174580A (en) * | 1994-12-22 | 1996-07-09 | Sekisui Chem Co Ltd | Manufacture of molded item of thermosetting resin |
WO2015178141A1 (en) * | 2014-05-21 | 2015-11-26 | 株式会社イノアックコーポレーション | Carbon fiber composite material |
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