WO2013011885A1 - 繊維強化樹脂を備える製品を少なくとも2つ製造する方法および装置 - Google Patents
繊維強化樹脂を備える製品を少なくとも2つ製造する方法および装置 Download PDFInfo
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- WO2013011885A1 WO2013011885A1 PCT/JP2012/067664 JP2012067664W WO2013011885A1 WO 2013011885 A1 WO2013011885 A1 WO 2013011885A1 JP 2012067664 W JP2012067664 W JP 2012067664W WO 2013011885 A1 WO2013011885 A1 WO 2013011885A1
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- core
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- fiber reinforced
- fiber
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14631—Coating reinforcements
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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
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
Definitions
- the present invention relates to a method and an apparatus for manufacturing at least two products including fiber reinforced resin.
- a resin transfer molding (RTM) molding method As a method for producing a fiber reinforced resin, a resin transfer molding (RTM) molding method is known.
- the RTM molding method is a method in which a fiber base material previously placed in a mold is injected and impregnated and then cured to mold a fiber reinforced resin (for example, International Publication No. 2007/013544 pamphlet). ). Since the entire surface of the fiber reinforced resin is covered with a molding die, the shape and the molding accuracy of the surface are high. Therefore, it has been proposed as a manufacturing method for structural members such as aircraft.
- thermosetting resins such as epoxy resins are often used for aircraft structural members.
- the resin material be heated to lower the viscosity in order to increase the impregnation property of the resin material into the fiber base material.
- FIG. 1 when the thermosetting resin is heated, the curing reaction proceeds, so that the viscosity increases after a certain period of time from the heating, and the impregnation property decreases.
- the RTM molding method like the autoclave molding method, requires control and management of temperature and time so that the inside of the mold is in a uniform cured state.
- parts for aircraft structural members have strict quality requirements, so the requirements for temperature and time control and management are strict.
- the present invention impregnates a fiber base material with a resin material even when the structure of the mold is complicated and the volume is increased when manufacturing at least two products including fiber reinforced resin.
- An object of the present invention is to provide a manufacturing method and a manufacturing apparatus that are easy to control, can easily control and manage the temperature and time for curing a resin material, and can easily clean a mold.
- the present invention is a method for producing at least two flat products having a fiber reinforced resin, and has at least the flat shape of the at least two products.
- a step of preparing a mold in which two cavity portions are formed so as to overlap each other via a core, a step of disposing a fiber substrate in each of the at least two cavity portions of the mold, and the mold A step of injecting a resin material into the fiber base material and impregnating the fiber base material with the resin material; and curing the resin material to form the at least two products.
- flat shape means a shape in which a product is crushed in one direction (that is, a direction in which a plurality of products are overlapped). Therefore, the flat product does not have a flat cross section, and may have a curved shape or a bent shape.
- the cross section is corrugated, arc-shaped, bowl-shaped, cup-shaped, hat-shaped, comb-shaped, T-shaped, V-shaped, W-shaped, M-shaped, N-shaped, toward the overlapping direction
- E-shaped, F-shaped, S-shaped, Z-shaped, L-shaped and the like in cross section may be superposed side by side in a row, or may be superposed side by side (ie, offset).
- the at least two products may have different shapes, but preferably have substantially the same shape. Further, as the resin material, it is preferable to use a chain curable resin composition.
- the product is preferably a composite material including a lightweight core and the fiber reinforced resin adjacent to at least a part of the surface of the lightweight core.
- the step of arranging the fiber base includes a second core having a portion in which each of the lightening cores has substantially the same shape as a portion adjacent to the fiber reinforced resin in each cavity.
- a cured resin comprising disposing a fiber base material adjacent to the second core, wherein the product forming step includes curing the resin material and then molding the fiber base material with the molding die.
- the method further includes a step of separating the second core from the second core, and a step of integrating the lightweight core with a cured resin including the fiber base material to form the composite material.
- the lightweight core and the fiber reinforced resin may be directly adjacent to each other or may be adjacent to each other through an adhesive.
- the forming step of the composite material may include the fiber base at a position where the second core is disposed and a portion having substantially the same shape as the light weight core. You may integrate with the cured resin containing a material.
- Another aspect of the present invention is an apparatus for producing at least two flat products having fiber reinforced resin, wherein at least two cavities having the flat shape of the at least two products have a fiber base material. After each is placed, a resin material is injected, the fiber base material is impregnated with the resin material, and cured, so that the mold for forming the fiber reinforced resin and the at least two cavity portions overlap. And a core positioned between the at least two cavity portions.
- the product is preferably a composite material including a lightweight core and the fiber reinforced resin adjacent to at least a part of the surface of the lightweight core.
- the device further includes a second core having a portion in the cavity having substantially the same shape as the portion adjacent to the fiber reinforced resin.
- the second core may be configured such that a portion having substantially the same shape as the lightweight core is disposed in the cavity at the position of the lightweight core in the composite material.
- the product including the fiber reinforced resin is limited to a flat product
- the cavity of the mold is formed with a plurality of cavity portions having the flat shape of the product via the core.
- FIG. 11 is a cross-sectional view schematically showing a use state of the mold shown in FIG. 10 in Step 210 of the manufacturing method shown in FIG. 2.
- FIG. 11 is a cross-sectional view schematically showing a product obtained from the mold shown in FIG. 10 in Step 230 of the manufacturing method shown in FIG. 2.
- FIG. 16 is a cross-sectional view schematically illustrating step 230 of the manufacturing method shown in FIG. 2 when the mold shown in FIG. 13 or FIG. 15 is used.
- an RTM molding apparatus 10 that is an embodiment of a manufacturing apparatus according to the present invention includes a molding die 11, and a cavity for molding a plurality of products in the molding die 11. 12 is formed.
- the RTM molding apparatus 10 includes a pair of presses 14 that sandwich the molding die 11 between the upper and lower outer sides of the molding die 11 and apply pressure from the outside. It may be a mechanism. A press is preferable because the clamping force can be easily adjusted.
- a resin injection port 15a for injecting a resin material into the cavity 12 is provided, and a suction port 15b is provided at the opposite end.
- the resin injection port 15a is connected to a mechanism for injecting a resin material.
- the injector 16 is connected.
- the mechanism for injecting the resin material preferably has a function of pressurizing the inside of the mold.
- the suction port 15 b may be connected to the vacuum pump 18 or the like via the vacuum line 17.
- the vacuum line 17 may be provided with a vacuum trap 19 or the like in order to prevent the resin material from being sucked into the vacuum pump 18.
- the mold 11 includes an upper mold 11a, a lower mold 11b, and a core 13 positioned in a cavity 12 formed by these two molds.
- the cavity 12 is divided into two cavity portions 12a and 12b having a flat cross section with the core 13 interposed therebetween. Each of these cavity portions 12a and 12b is for molding one product.
- the sealing material 17 for sealing a mating surface is arrange
- the recess 13 a at the edge of the core 13 engages with the protruding portion 11 c on the inner wall of the lower mold 11 b, so that the core 13 is fixed at a predetermined position of the mold 11. Yes.
- the present invention is not limited to this, and the core 13 may be fixed to a predetermined position by engaging with the upper mold 11a, not the lower mold 11b, or may be fixed using a jig or the like. The position may be fixed.
- the upper mold 11a, the lower mold 11b, and the core 13 can be made of a material generally used as a mold material, and may be made of metal such as aluminum, aluminum alloy, iron, alloy steel such as stainless steel or invar, for example. However, it may be made of fiber reinforced resin or glass. Moreover, these can be comprised with a heat insulating material instead of such a non-insulating material.
- the heat insulating material is not particularly limited, but the thermal conductivity is preferably 0.3 W / (m ⁇ K) or less, more preferably 0.2 W / (m ⁇ K), and most preferably 0.1 W / (m -K) The following materials are preferable.
- the thing with a small volume specific heat is preferable, for example, the material below aluminum is preferable.
- the thing with a small heat capacity is preferable, for example, the material below aluminum is preferable.
- a polymer film having a heat-resistant surface and a foam inside can be used.
- the flat fiber base material 1 is arrange
- fibers for fiber reinforced resin such as glass fiber, carbon fiber, and aramid fiber can be widely used. Parts such as jigs and nuts may be attached to the fiber base 1 as necessary.
- position mold release materials (illustration omitted), such as a peel ply, between the core 13 and the fiber base material 1 as needed.
- the surface of the core 13 may be released from the mold.
- a structure for fixing the fiber base material 1 at a predetermined position may be provided in the core and the mold that are in contact with the fiber base material 21. For example, in FIG.
- the upper mold 11 a, the lower mold 11 b, or the core 13 may be provided. If the fiber base material 1 is arrange
- step 120 for injecting a resin material into the cavity 12 is performed.
- a resin material is injected into the cavity 12 from the injector 16 or the like through the resin injection port 15a.
- the resin material may be preheated before injection.
- the resin material includes a resin flow path between the end portion of the core 13 and the lower mold 11b, a resin flow path between the upper mold 11a and the lower mold 11b, and the fiber base 1, and the core 13 and the fiber base.
- the two cavities 12a and 12b are quickly filled by flowing in the mold 11 through the resin flow path between the two. If necessary, a resin flow path through which a resin material flows may be provided in each part of the upper mold 11a, the lower mold 11b, and the core 13.
- the two cavities 12a and 12b have a flat cross section and are arranged so as to overlap with each other, so that the resin material can be easily filled in the two cavities 12a and 12b. And a resin material impregnates the fiber base material 1 each arrange
- the vacuum pipe may be closed and pressurized by a mechanism for injecting the resin material, for example, the injector 16 or the like. By applying pressure with the injector 16 or the like, the impregnation of the resin material can be promoted. Further, after filling the cavity 12 with the resin material, the suction port 15b may be closed as necessary, and the pressure in the cavity 12 may be increased by the pressure from the resin injection port 15a (step 122).
- the applied pressure is preferably 3 atm or more, more preferably 5 atm or more, and most preferably 10 atm or more.
- the upper limit of the pressure in the cavity 14 is not particularly limited, but is preferably 100 atm or less.
- step 130 for curing the injected resin material is performed.
- Curing is performed by applying heat or heat and ultraviolet light (UV) or both according to the resin material to be used.
- the application of heat can be performed by a heating function provided in, for example, a press 14 or a heater incorporated in a forming jig.
- UV irradiation can be performed by a UV lamp (not shown) or the like.
- the two cavities 12a and 12b into which the resin material is injected have a flat cross section and are arranged so as to overlap with each other, so that heating, time control and management for curing can be easily performed. Can do.
- the product including the fiber reinforced resin is taken out from the mold 11.
- the mold 11 has a complicated structure for molding two products, but the two cavities 12a and 12b are connected via a core 13 that is removed from the upper mold 11a and the lower mold 11b. Since it is formed, the mold 11 can be easily cleaned.
- the resin material to be used is not particularly limited, but a chain curable resin composition is preferably used.
- “Chain-curing type resin composition” means curing by irradiation of energy rays such as heat and UV, and during curing, curing reaction heat is generated, and the curing reaction is chained by this curing reaction heat. The curing reaction heat is continuously generated and the curing reaction proceeds in a chain by self-generated heat of the curing reaction without irradiation of energy rays regardless of the presence or absence of the energy ray shielding substance in the composition.
- a chain curable resin composition for example, a photopolymerization resin component such as a photopolymerizable oligomer or a photopolymerizable monomer, a photopolymerization initiator, and a light / polymer that initiates polymerization with both light and heat.
- blended the polymerization initiator component which consists of a binary system which uses a thermal polymerization initiator as a component can be used.
- the photopolymerizable resin component cationic resins are preferable, epoxy resins are more preferable, alicyclic epoxy resins, glycidyl ether type epoxy resins, and epoxidized polyolefin resins are more preferable.
- photopolymerization initiator diazonium salts, iodonium salts, pyridinium salts, phosphonium salts, sulfonium salts, iron-allene compounds and sulfonic acid esters are preferred.
- photo / thermal polymerization initiator aryl sulfonium salts are preferred.
- the polymerization initiator component is preferably contained in an amount of 0.5 to 6.0 parts by weight with respect to 100 parts by weight of the photopolymerizable resin component.
- the weight ratio of photo / thermal polymerization initiator / photopolymerization initiator is preferably 1 to 4.
- a chain curable resin composition for example, a resin in which a photopolymerization initiator component and a curing agent component used for curing the photopolymerizable resin component at room temperature or heat are mixed with a photopolymerizable resin component
- a composition can also be used (Japanese Patent Laid-Open No. 2001-89639, Japanese Patent No. 4108084, Japanese Patent No. 4241721).
- an epoxy resin having a cyclic ether structure in the molecular structure is preferable as the photopolymerizable resin component.
- the photopolymerization initiator component is preferably an iron-allene compound or a sulfonium salt.
- An acid anhydride is preferred as the curing agent component.
- the curing agent component is preferably blended at a ratio of 0.1 to 1.4 mol with respect to 1 mol of the photopolymerizable resin component. Further, the photopolymerization initiator component is preferably blended at a ratio of 0.1 to 6.0 parts by weight with respect to 100 parts by weight of the total weight of other components other than the photopolymerization initiator component in the resin composition.
- a chain-curable resin composition for example, it contains an alicyclic epoxy compound having two cyclohexene oxides in the molecule and a modified bisphenol A type epoxy resin, and the content of the alicyclic epoxy compound is A resin composition of 25 to 90% by mass when the total of the two components is 100% by mass, an alicyclic epoxy compound having two cyclohexene oxides in the molecule, a modified bisphenol A type epoxy resin,
- a resin composition containing a liquid bisphenol-type epoxy resin and having an alicyclic epoxy compound content of 25 to 90% by mass when the total of the three components is 100% by mass can be used ( JP 2011-079989 A).
- a chain curing reaction can be caused and the resin material in the mold 11 can be cured. Even if the core 13 has a shape in which it is difficult to uniformly apply energy for curing to the entire resin material, the chain curing reaction proceeds in a chain due to the self-generated heat, so the resin can be formed in a short time. Curing of the entire material can be completed.
- the curing time varies depending on the size of the molding object, the plate thickness, the type of resin, and the like. For example, in the case of a general CFRP having a length and width of 1 m and a thickness of about 2 mm, curing is started from the start of chain curing.
- the curing may be performed until the resin material can be handled. For example, handling is possible if the cured resin material containing the fiber substrate maintains its shape at room temperature. When the chain curing reaction is completed, the chain curing resin composition is cured to such a state that it can be handled.
- step 130 of curing the injected resin material is performed.
- the curing in the curing step 130 includes semi-curing.
- “semi-cured” is a state in which the resin material is solidified, but the crosslinking reaction has not been completely completed, and is cured to a state where it can be handled. .
- the resin material may be completely cured in this curing step 130.
- the temperature when heat is used in the curing step 130 varies depending on the composition of the resin material and the catalyst used, but is preferably, for example, 80 ° C. to 250 ° C., more preferably 110 ° C. or higher, and even more preferably 150 ° C. or higher.
- the temperature control of the resin material in hardening can be easily performed by using a non-insulating material for the mold 11 and the core 13.
- step 140 After the curing step 130, a step 140 of taking out the core and the fiber reinforced resin from the mold is performed.
- step 132 which cools a shaping
- cooling equipment such as water cooling (not shown) can be used.
- a curable resin or a thermoplastic resin can be used in addition to the chain curable resin composition.
- the curable resin for example, epoxy resin, phenol resin, bismaleimide resin, polyimide resin, unsaturated polyester resin, benzoxazine resin, or the like can be used.
- the curable resin is heated in the curing step 130, it is preferably in the range of 100 to 350 ° C., depending on the composition.
- a thermoplastic resin PPS, PEEK, PEKK, PEK, PI, PEI, PA etc. can be used, for example.
- the molding die 11 is not limited to the embodiment of FIG. 4, and the structures of the embodiments shown in FIGS. 5 to 9 can be employed.
- the molding die 21 has four cavity portions 22a to 22d having a flat cross section overlapped via three cores 23 between the upper die 21a and the lower die 21b. It is formed. Even when the four cavity portions 22a to 22d are formed in this way, the resin material flows through the resin flow path between the end portion of the core 23 and the lower mold 21b, and in parallel in the four cavity portions 22a to 22d. Meet promptly. And since the resin material easily impregnates the four fiber base materials 2 arranged in each cavity part, even four products can be simultaneously and easily molded simultaneously.
- the number of products to be molded at the same time is not particularly limited, but if the distance between heaters or the water cooling mechanism is too large, the efficiency of heating and cooling will decrease and unevenness will increase, so it will be appropriate for the product.
- a distance is preferred.
- the distance between the heaters is preferably within 1 m, and more preferably within 50 cm.
- the molding die 31 has a shape in which a plurality of overlapping cavity portions 32a to 32b are curved in a waveform in its cross section. Even in such a curved shape, the resin material easily fills the inside of the plurality of cavities 32a to 32c and impregnates the disposed fiber base material 3 as in the flat shape. The effect of can be obtained.
- a plurality of cavity portions 42a to 42b having a shape whose cross section is bent into a hat shape are formed. Even in such a shape, the resin material easily fills the plurality of cavities 42a to 42c and impregnates the disposed fiber base material 4 as in the flat shape, and therefore has the same effect as the flat shape. Can be obtained.
- a plurality of cavity portions 52a to 52b having a shape whose cross section is bent into an N-shape are formed. Even in such a shape, the resin material easily fills the plurality of cavities 52a to 52c and impregnates the arranged fiber base 5 as in the flat shape. Can be obtained.
- a plurality of cavity portions 62a to 62b having a shape whose cross section is bent into a V shape are formed. Even in such a shape, since the resin material easily fills the plurality of cavities 62a to 62c and impregnates the arranged fiber base 6 as in the flat shape, the same effect as the flat shape is obtained. Can be obtained.
- the molding die 71 used in the present embodiment includes an upper die 71 a, a lower die 71 b, and a first core 73.
- Two cavities 72a and 72b having the shape of the composite material to be molded are formed inside the mold and the first core.
- the mold 71 includes a second core 74 having a weight-reducing core of the composite material to be molded having substantially the same shape as a portion adjacent to the fiber reinforced resin.
- the second core 74 is disposed in a position corresponding to the weight-reducing core of the composite material to be molded in each of the cavity portions 72a and 72b.
- the second core 74 is fixed at a predetermined position by the structure of the upper mold 71a, the lower mold 71b, the first core 73, a jig, or the like.
- the fiber base material 7 is arrange
- a release material (not shown) such as a peel ply may be disposed between the second core 74 and the fiber base material 7.
- the surface of the second core 74 may be released.
- a step 120 of injecting a resin material into the cavity is performed.
- step 112 which decompresses the inside of a shaping
- the inside of the cavity is preferably decompressed to a vacuum state.
- step 114 of drying the fiber base material in the mold is performed as necessary. Drying can be performed by heating the mold 71 with the press 14 as described above. Moreover, you may heat the shaping
- the decompression step 112 may be performed after the drying step 114. If necessary, the resin material may be preheated before injection.
- each cavity 72 The resin material injected into each cavity 72 is impregnated into each fiber substrate 7. At this time, the resin material is pressurized as necessary. Thereby, the impregnation of the resin material can be promoted.
- the suction port 15b may be closed and the pressure in the cavity 72 may be increased by the pressure from the resin injection port 15a (step 112 in FIG. 1).
- the mold 71 may be further tightened using the press 14 as necessary.
- step 130 of curing the injected resin material is performed.
- the curing in the curing step 130 includes semi-curing.
- the resin material may be completely cured in this curing step 130.
- a step 140 of taking out two types of cores and fiber reinforced resin from the mold is performed.
- the upper mold 71a is removed, the mold 71 is opened, and the cured resin containing the fiber base material molded by the mold 71, that is, the fiber reinforced resin and the second core 74 are taken out. Then, the fiber reinforced resin and the second core 74 are separated. When the peel ply is arranged between them, the peel ply is also separated.
- step 122 which cools the shaping
- step 210 is performed in which the honeycomb material and the fiber reinforced resin are arranged in the mold.
- the honeycomb material 8b is disposed at the position where the second core in the mold 71 is disposed
- the fiber reinforced resin 8a is disposed at the position where the fiber base material is disposed.
- the resin material is not limited to the honeycomb material 8b, and a foamed resin body such as Lohacell (registered trademark) may be used as long as it is a lightweight core that can reduce the weight of the composite to be molded.
- a film adhesive (not shown) may be disposed between the honeycomb material 8b and the fiber reinforced resin 8a.
- an epoxy resin adhesive or the like can also be used.
- the same resin composition as what was used for the resin material can be used as an adhesive agent, for example, you may use the chain-curing-type resin composition mentioned above.
- the upper die 71a and the lower die 71b are closed. After closing the mold, if necessary, the mold 71 is sandwiched by the press 14 positioned outside the upper mold 71a and the lower mold 71b, and pressure is applied from the outside.
- a step 212 of evacuating the inside of the mold is performed as necessary.
- the evacuation can be performed by depressurizing the inside of the mold 71 to a vacuum state using the vacuum pump 18.
- Step 220 for integrating the honeycomb material and the fiber reinforced resin is performed.
- the fiber reinforced resin 8a since the fiber reinforced resin 8a has already been cured in the curing step 130, even if the fiber reinforced resin 8a is in direct contact with and integrated with the honeycomb material 8b, the resin remains in the holes on the surface of the honeycomb material 8b. Inflow can be prevented.
- the integration can be performed, for example, by heating the forming die 71 with a heater (not shown) incorporated in the press 14 or the forming die 10.
- a heater not shown
- the honeycomb material 8b and the fiber reinforced resin 8a can be bonded and integrated by heating until the fiber reinforced resin 8a is completely cured.
- an adhesive if it is a thermosetting adhesive, the honeycomb material 8b and the fiber reinforced resin 8a can be bonded and integrated by heating to a temperature higher than the curing temperature of the adhesive. Further, this heating can simultaneously perform post-curing of the fiber reinforced resin in a semi-cured state and curing of the adhesive, thereby improving the adhesion quality and shortening the production time.
- the adhesive is not a thermosetting type, the honeycomb material and the fiber reinforced resin can be bonded and integrated without any particular heating.
- the integration accuracy of the composite material can be further increased.
- the integration accuracy of the composite material can be increased.
- the heating temperature in the integration step 220 is preferably equal to or higher than the glass transition temperature of the fiber reinforced resin 8a.
- the resin component of the fiber reinforced resin 8a is softened. Therefore, the surface of the fiber reinforced resin 8a is deformed according to the shape of the honeycomb material 8b, and the molding accuracy of the composite material can be improved. it can. From this viewpoint, it is preferable to use a resin composition having a glass transition temperature of preferably 80 to 200 ° C., more preferably 80 to 150 ° C., as the semi-cured fiber reinforced resin 8a.
- step 230 is performed to take out the composite material from the mold.
- the upper die 71a is opened, and as shown in FIG. 12, two composite materials 8 having a three-layer structure including a core layer of the honeycomb material 8b and two layers of fiber reinforced resin 8a sandwiching the core layer from both sides are formed from the molding die. It can be taken out.
- the composite material 8 since the composite material 8 only includes an adhesive as necessary in addition to the fiber reinforced resin 8a and the honeycomb material 8b, the weight of the composite material does not increase.
- the fiber reinforced resin 8a is molded by using the molding die 71 for molding the composite material in steps 110 to 140, the dimensions are stable, it is easy to fit the honeycomb material 8b, and the composite material has high molding accuracy.
- the material 8 can be obtained. Furthermore, by adopting such an RTM molding method, it can be produced at a higher rate than the molding method using a prepreg.
- the composite material 8 having a three-layer structure in which the honeycomb material 8b is sandwiched between two fiber reinforced resins 8a from both sides is shown.
- the present invention is not limited to this.
- a composite material in which one fiber-reinforced resin is adjacent to one surface of the honeycomb material can also be manufactured. It is also possible to manufacture a composite material having a multi-layer structure in which the entire circumference of the honeycomb material is covered with a fiber reinforced resin.
- the composite material 8 is manufactured using the second core 74 having the same overall shape as the honeycomb material 8b.
- the present invention is not limited to this.
- a composite material can be manufactured using a core including a portion having the same shape as the honeycomb material. In this case, among the positions where the core is disposed, the honeycomb material is disposed at the position of the portion having the same shape as the honeycomb material, and a hollow member or a solid member is disposed at the remaining core portion. Place. Thereby, the composite material provided with the honeycomb material, the hollow or solid member, and the fiber reinforced resin adjacent to these can be obtained.
- a composite material can be manufactured using a core in which the honeycomb material includes a portion having substantially the same shape as a portion adjacent to the fiber reinforced resin.
- the composite material formed by the forming die 91 includes the thick honeycomb material 8d, and the fiber reinforced resins 8c and 8e of the composite material are molded.
- the thickness of the second core 84 is set to the thickness of the second core 84 while maintaining the surface of the second core 84 substantially the same shape as the portion where the honeycomb material is adjacent to the fiber reinforced resin. Make it thinner than 8d.
- the angle between the two fiber reinforced resins molded in the molding die 81 is set to two layers of fibers in the composite material. The angle between the reinforced resins can be changed.
- the size of the second core 84 smaller than that of the honeycomb material 8d, it is possible to reduce energy required for molding the fiber reinforced resin in the molding die 81, and to cure the step 130 or the like.
- the temperature inside the mold 81 can be easily controlled, and the second core 84 can be easily handled.
- the upper mold and the lower mold have the product molding surface directly, but the present invention is not limited to this.
- the third core 85 adjacent to the upper mold 81a or the lower mold 81b may have a molding surface of the product to be molded.
- a frame mold 81d having a cylindrical shape may be provided between the upper mold 81a and the lower mold 81b.
- the third core 85 is preferably fixed to the upper mold 81a or the lower mold 81b, or preferably integrated with the upper mold 81a or the lower mold 81b.
- the third core 85 As a method of fixing the third core 85 to the upper mold 81a or the lower mold 81b, for example, a bolt or a pin (not shown) is provided between the joint surfaces of the third core 85 and the upper mold 81a or the lower mold 81b. You may combine directly. Alternatively, the third core 85 may be fixed to the frame mold 81d.
- FIG. 14 shows a film-like adhesive 8f that is disposed as necessary between the honeycomb material 8d and the fiber reinforced resins 8c and 8e in the molding die 91 for molding the composite material.
- the molding die 81 used in the series of steps 110 to 140 for molding the fiber reinforced resin and the molding die 91 used in the integration step 220 are a frame.
- the heights of the molds 81d and 91d are different.
- the molding die 81 used in steps 110 to 140 and the molding die 91 used in step 220 are the first medium.
- the shapes of the children 83 and 93 are different.
- the widths of the upper molds 81a and 91a and the lower molds 81b and 91b are different, but in the molding molds 81 and 91, the fourth core is disposed adjacent to the frame molds 81d and 91d.
- the upper molds 81a and 91a and the lower molds 81b and 91b can have the same width.
- the honeycomb material 8d may have substantially the same shape as the portion adjacent to the fiber reinforced resins 8c and 8e.
- the second core 87 sandwiched between the two fiber reinforced resins to be molded has substantially the same shape as the portion where the honeycomb material 8d is adjacent to the other fiber reinforced resin, and is made of the composite material. It also has a molding surface.
- the composite material is manufactured by integrating the honeycomb material and the fiber reinforced resin using the molding die 91.
- the present invention is not limited to this, and FIG.
- the honeycomb material 8d and the fiber reinforced resins 8c and 8e are arranged at predetermined positions and sealed in a bag 100 made of a sheet-like or film-like material, and an oven or an autoclave or the like ( Even if this bag is heated by (not shown), a composite material in which the honeycomb material 8d and the fiber reinforced resins 8c and 8e are integrated can be manufactured.
- the fiber reinforced resins 8c and 8e sealed in the bag 100 are molded by a molding die using a core having a portion in which the honeycomb material 8d has substantially the same shape as a portion adjacent to the fiber reinforced resin. Therefore, a composite material having a predetermined shape can be obtained without using a molding die when integrating with the honeycomb material 8d.
- the bag 100 may be sealed via a lower mold 101 and a sealing material 102 as shown in FIG. Further, if necessary, a core having a molding surface of the composite material used in the molding die, in this case, the third core 85 may be disposed on the lower die 101, or the core 85 is integrated with the lower die 101. What you did is fine.
- a composite material including a honeycomb material and a hollow or solid member can be obtained as in the case of integration using a mold.
- the shape is not limited to the case where the entire core has the same shape as the entire honeycomb material, and the core only needs to have a portion having the same shape as the portion adjacent to the fiber reinforced resin.
- a heating function can be provided by providing a heater or the like (not shown) in the core. Thereby, heating of the mold in the drying step 114 and heating of the resin material in the curing step 130 can be promoted.
- a cooling function can be provided by providing water cooling, a Peltier element, etc. in a core. Thereby, cooling of the shaping
- the second cores 74 and 84 of the molds 71 and 81 are expanded or contracted by heating or the like between the placement step 110 and the curing step 130, and have substantially the same shape as the lightweight core. But you can.
- such an expansion function and a contraction function can be imparted by forming the core using a metal having a high linear expansion coefficient such as aluminum, rubber, a silicon bag, or the like.
- a part of the core may be melted to have substantially the same shape as the lightweight core.
- a material of the part where such dissolution occurs for example, a water-soluble resin, a wax packed with a film, or the like can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
8 複合材
8a、8c、8e 繊維強化樹脂
8b、8d ハニカム材
10 RTM成形装置
11、21、31、41、51、61、71、81、91 成形型
11a、21a、31a、41a、51a、61a、71a、81a、91a 上型
11b、21b、31b、41b、51b、61b、71b、81b、91b 下型
12、22、32、42、52、62、72、82 キャビティ
13、23、33、43、53、63 中子
14 プレス
15a 樹脂注入口
15b 吸引口
16 インジェクタ
17 真空ライン
18 真空ポンプ
19 真空トラップ
73、83、93 第1の中子
74、84、87、94 第2の中子
85、88、95 第3の中子
86 第4の中子
100 バッグ
101 下型
102 シール材
Claims (9)
- 繊維強化樹脂を備える扁平形状の製品を少なくとも2つ製造する方法であって、
前記少なくとも2つの製品の前記扁平形状を有する少なくとも2つのキャビティ部が、中子を介して重なるように形成される成形型を用意するステップと、
前記成形型の前記少なくとも2つのキャビティ部に、繊維基材をそれぞれ配置するステップと、
前記成形型内に樹脂材を注入して、前記繊維基材にこの樹脂材を含浸するステップと、
前記樹脂材を硬化して、前記少なくとも2つの製品を形成するステップと
を含む方法。 - 前記少なくとも2つの製品が、実質的に同一の形状を有する請求項1に記載の方法。
- 前記樹脂材として、連鎖硬化型の樹脂組成物を用いる請求項1又は2に記載の方法。
- 前記製品が、軽量化コアと、前記軽量化コアの表面の少なくとも一部に隣接して前記繊維強化樹脂を備える複合材である請求項1~3のいずれか一項に記載の方法。
- 前記繊維基材の配置ステップが、前記各キャビティ内に、前記軽量化コアが前記繊維強化樹脂と隣接する部分と実質的に同一の形状を有する部分を備える第2の中子と、この第2の中子に隣接して繊維基材を配置することを含み、
前記製品の形成ステップが、前記樹脂材を硬化した後、
前記成形型で成型した前記繊維基材を含む硬化樹脂を、前記第2の中子と分離するステップと、
前記軽量化コアを、前記繊維基材を含む硬化樹脂と一体化し、前記複合材を形成するステップと
を更に含む請求項4に記載の方法。 - 前記複合材の形成ステップが、前記軽量化コアを、前記第2の中子を配置した位置であって前記軽量化コアと実質的に同一の形状を有する部分の位置で、前記繊維基材を含む硬化樹脂と一体化することを含む請求項5に記載の方法。
- 繊維強化樹脂を備える扁平形状の製品を少なくとも2つ製造する装置であって、
前記少なくとも2つの製品の前記扁平形状を有する少なくとも2つのキャビティ部内に、繊維基材をそれぞれ配置した後、樹脂材を注入し、前記繊維基材にこの樹脂材を含浸し、硬化することで、前記繊維強化樹脂を形成する成形型と、
前記少なくとも2つのキャビティ部が重なるように、前記少なくとも2つのキャビティ部の間に介して位置する中子と
を備える装置。 - 前記製品が、軽量化コアと、前記軽量化コアの表面の少なくとも一部に隣接して前記繊維強化樹脂を備える複合材であって、
前記キャビティ内に、前記軽量化コアが前記繊維強化樹脂と隣接する部分と実質的に同一の形状を有する部分を具備する第2の中子を更に備える請求項7に記載の装置。 - 前記第2の中子が、前記キャビティ内において、前記複合材における前記軽量化コアの位置に、前記軽量化コアと実質的に同一の形状を有する部分が配置される請求項8に記載の装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US14/130,193 US20140138872A1 (en) | 2011-07-21 | 2012-07-11 | Method and device configured to produce at least two products including fiber reinforced resin |
CN201280035862.7A CN103687708A (zh) | 2011-07-21 | 2012-07-11 | 制造至少两个具有纤维强化树脂的产品的方法及装置 |
BR112014001153A BR112014001153A2 (pt) | 2011-07-21 | 2012-07-11 | método e dispositivo configurado para produzir pelo menos dois produtos incluindo resina de fibra reforçada |
EP12814531.5A EP2735416A1 (en) | 2011-07-21 | 2012-07-11 | Method and device for producing at least two products including fiber-reinforced resin |
CA2842036A CA2842036A1 (en) | 2011-07-21 | 2012-07-11 | Method and device configured to produce at least two products including fiber reinforced resin |
RU2014101453/05A RU2014101453A (ru) | 2011-07-21 | 2012-07-11 | Способ и устройство для изготовления по меньшей мере двух изделий, содержащих волоконно-армированную смолу |
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JP2011159883A JP2013022835A (ja) | 2011-07-21 | 2011-07-21 | 繊維強化樹脂を備える製品を少なくとも2つ製造する方法および装置 |
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EP (1) | EP2735416A1 (ja) |
JP (1) | JP2013022835A (ja) |
CN (1) | CN103687708A (ja) |
BR (1) | BR112014001153A2 (ja) |
CA (1) | CA2842036A1 (ja) |
RU (1) | RU2014101453A (ja) |
TW (1) | TW201307027A (ja) |
WO (1) | WO2013011885A1 (ja) |
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CN105670012A (zh) * | 2014-11-21 | 2016-06-15 | 台山市爱达电器厂有限公司 | 一种耐冲击的树脂产品及其加工方法 |
BR112017015847B1 (pt) | 2015-02-27 | 2022-05-24 | Huntsman Advanced Materials Licensing (Switzerland) Gmbh | Processo para a preparação de um artigo compósito reforçado com fibras |
JP2016196060A (ja) * | 2015-04-03 | 2016-11-24 | 津田駒工業株式会社 | 工作機械又は工作機械関連装置用の部品、及びその製造方法 |
FR3059267B1 (fr) * | 2016-11-28 | 2019-01-25 | Safran Aircraft Engines | Dispositif et procede de controle de la temperature |
CN108656419B (zh) * | 2018-05-30 | 2023-06-16 | 山东蒂德精密机床有限公司 | 矿物铸件变温养护系统及其工作方法 |
FR3085131B1 (fr) * | 2018-08-27 | 2020-11-13 | Safran | Procede de mise en forme par compactage d'une preforme fibreuse pour la fabrication d'une piece en materiau composite |
JP7040425B2 (ja) * | 2018-11-29 | 2022-03-23 | トヨタ自動車株式会社 | 高圧タンクの製造方法 |
FR3089854B1 (fr) * | 2018-12-18 | 2022-02-04 | Saint Gobain Performance Plastics France | Procede de preparation d’un materiau composite sous forme de sandwich |
JP7161399B2 (ja) * | 2018-12-28 | 2022-10-26 | 株式会社Subaru | 樹脂含浸測定装置 |
CN112212964B (zh) * | 2019-07-12 | 2021-10-01 | 清华大学 | 光声传感器、光声探测系统、方法、装置及存储介质 |
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JP2013022835A (ja) | 2013-02-04 |
US20140138872A1 (en) | 2014-05-22 |
EP2735416A1 (en) | 2014-05-28 |
CN103687708A (zh) | 2014-03-26 |
CA2842036A1 (en) | 2013-01-24 |
RU2014101453A (ru) | 2015-07-27 |
BR112014001153A2 (pt) | 2017-06-13 |
TW201307027A (zh) | 2013-02-16 |
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