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WO2002058915A1 - Materiau de noyau pour structure composite en resine renforcee par des fibres et procede de production d'une structure composite en resine renforcee par des fibres a l'aide de ce materiau - Google Patents

Materiau de noyau pour structure composite en resine renforcee par des fibres et procede de production d'une structure composite en resine renforcee par des fibres a l'aide de ce materiau Download PDF

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Publication number
WO2002058915A1
WO2002058915A1 PCT/JP2002/000539 JP0200539W WO02058915A1 WO 2002058915 A1 WO2002058915 A1 WO 2002058915A1 JP 0200539 W JP0200539 W JP 0200539W WO 02058915 A1 WO02058915 A1 WO 02058915A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
composite structure
core material
liquid resin
resin composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2002/000539
Other languages
English (en)
Japanese (ja)
Inventor
Nobuhiro Imamura
Yoshihiro Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaneka Corp
Original Assignee
Kaneka Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaneka Corp filed Critical Kaneka Corp
Priority to JP2002559232A priority Critical patent/JPWO2002058915A1/ja
Priority to KR1020027009337A priority patent/KR20020086473A/ko
Publication of WO2002058915A1 publication Critical patent/WO2002058915A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • 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
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
    • B29C70/547—Measures for feeding or distributing the matrix material in the reinforcing structure using channels or porous distribution layers incorporated in or associated with the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/086—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of pure plastics material, e.g. foam layers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary

Definitions

  • the present invention relates to a fiber-reinforced resin composite structure (hereinafter, referred to as a “FRP (Fiber Reinforced Plastic) composite structure”) widely used as a material for ships, vehicles, marine buoyant bodies, pools, aircraft, wind power blades, and the like.
  • FRP Fiber Reinforced Plastic
  • the present invention relates to a core material used in (1) and a method for producing an FRP composite structure using the core material for an FRP structure.
  • a vacuum-assisted resin transfer method using a vacuum bag is known.
  • a reinforcing fiber layer made of glass fiber or the like is covered with a vacuum bag made of a synthetic resin or the like, a liquid resin such as a burester resin or an unsaturated polyester resin is supplied from one side of the vacuum bag, and the other side is vacuumed.
  • the air in the bag is sucked by a vacuum pump to impregnate the reinforcing fiber layer with the liquid resin, and then the liquid resin is cured to produce the FRP composite structure.
  • Japanese Patent Application Laid-Open No. 10-504501 discloses a separation sheet having a large number of dot-like or pentagon-like projections formed on a surface of a reinforcing fiber layer. It is described that a gap between adjacent protrusions on a release sheet is used as a flow path for distributing a liquid resin.
  • Japanese Patent Application Laid-Open No. 2000-501609 describes that a reinforcing fiber layer is disposed on the surface of a core material made of a foamed resin or the like, and the reinforcing fiber layer is formed by a vacuum auxiliary resin transfer method.
  • a slit groove
  • a slit for distributing the liquid resin is formed on the surface of the core material, or a slit is formed on the surface of the core material. It is described that a plurality of projecting distribution media is provided or a metal woven skin sheet having a large number of raised portions is used.
  • the liquid resin it was difficult to distribute the liquid resin evenly and simply by forming a slit on the surface of the core material. For example, if a residual air layer is formed in the vacuum bag during vacuum suction by the vacuum assisted resin transfer method, the air layer blocks the flow of the liquid resin by the slit, so that other liquid layers are formed. If the resin flow passage is not formed, the liquid resin will not be distributed to the portion of the core material on the vacuum suction side from the remaining air layer.
  • the liquid resin that flows in the slit and is distributed to the reinforcing fiber layer remains in the slit after being distributed and is cured, but the liquid resin is slightly cured by the curing.
  • Shrink The shrinkage of the portion corresponding to the slit becomes larger than the surface of the core material by the depth of the slit, and as a result, the FRP composite structure On the surface of the body, there was a problem that fine lines (small irregularities called so-called print-through) occurred along the slits, and the appearance was impaired.
  • liquid resins such as butyl ester resin and unsaturated polyester resin may erode the core material. When the liquid resin flows through the slit, it erodes the core material to soften the core material, As a result of, for example, expanding the slot width, the above-mentioned dents become more prominent.
  • An object of the present invention is to provide a core material for an FRP composite structure capable of uniformly and quickly distributing a liquid resin, and a method for producing an FRP composite structure using the core material. .
  • the present invention is a core material for an FRP composite structure, which has a slit on the surface and a through hole penetrating in a thickness direction.
  • a reinforcing fiber layer is disposed on the surface of the core material, and when the reinforcing fiber layer is impregnated with the liquid resin by the vacuum assisted resin transfer method, the liquid resin passes through the slits on the surface of the core material.
  • the liquid resin flows between the opposing surfaces of the core material through the through holes, so that the liquid resin flows more smoothly.
  • the liquid resin is uniformly and rapidly distributed to the reinforcing fiber layer on each surface of the core material.
  • the quality of the FRP composite structure can be improved, and the time required for manufacturing the FRP composite structure can be reduced.
  • the work of providing slits and through holes in the core material is performed using a rotary saw or an electric drill. Since it can be performed relatively easily, there is no need to manufacture core materials, and there is no need to prepare separate members such as conventional release sheets for distributing the liquid resin, resulting in a reduction in manufacturing costs. Can be done.
  • the slit has a width of approximately 0.5 to 2 mm, a depth of approximately 1 to 4 times the width, and a pitch of approximately 10 to 10 O. mm. If the size and pitch of the slit are within the above ranges, the flow of the liquid resin at the time of vacuum suction is performed smoothly, and the amount of resin remaining in the slit after the production of the FRP composite structure is properly adjusted. Range, and the weight of the FRP composite structure can be reduced.
  • the size of the slit is smaller than the above lower limit or the pitch is larger than the above upper limit, the flow rate of the liquid resin during production of the FRP composite structure is undesirably reduced.
  • the size of the slit is larger than the above upper limit or the pitch is smaller than the above lower limit, the amount of resin remaining in the slit after the production of the FRP composite structure becomes excessive, that is, However, the amount of the liquid resin used in the production becomes excessive and the weight of the FRP composite structure increases, which is not preferable.
  • the size of the slit is larger than the above upper limit, the unevenness may be formed on the surface of the FRP composite structure to deteriorate the appearance, which is not preferable.
  • the weight of the FRP composite structure may increase.
  • the cross-sectional area of the slit is larger than when the slit has a substantially rectangular cross-section.
  • the amount of resin remaining in the slit after the production of the FRP composite structure is reduced. Therefore, liquid trees at the time of production It has the advantage of reducing the cost by reducing the amount of fat used and reducing the weight of the FRP composite structure. Also, there is an advantage that the above-mentioned uneven pattern generated on the surface of the FRP composite structure due to contraction of the liquid resin is suppressed.
  • the diameter of the through hole is approximately 1 to 4 mm, and the pitch is approximately 20 to 200 mm. If the diameter and pitch of the through holes are within the above ranges, the flow of the liquid resin through the through holes during the production of the FRP composite structure is smoothly performed, and the amount of the liquid resin remaining in the through holes after the production is reduced. There is an advantage that the FRP composite structure can be reduced in weight so that it is not excessively large.
  • the diameter of the through hole near the end is expanded. This facilitates the flow of the liquid resin from the surface of the core material into the through hole during the manufacture of the FRP composite structure, and further facilitates the flow of the liquid resin through the through hole.
  • an end of the through-hole communicates with the slit. This allows the liquid resin to move from the through hole to the slit or from the slit to the through hole during the production of the FRP composite structure, so that the distribution of the liquid resin to each part of the reinforcing fiber layer as a whole is further improved. It will be done smoothly.
  • the core material for an FRP composite structure according to the present invention has the above-mentioned slits along at least two directions on the surface, and the above-mentioned slits are provided at the intersections of the slits in different directions from each other.
  • the ends of the through holes communicate with each other.
  • the core material for an FRP composite structure according to the present invention comprises a hard plastic. It is made of a plastic foam or wood, and it is particularly preferable that the hard plastic foam is a hard vinyl chloride foam.
  • a hard plastic foam is a relatively inexpensive and lightweight core material.
  • a plastic material is used, sufficient strength can be imparted to the FRP composite structure by using a rigid plastic foam.
  • rigid vinyl chloride-based foams are not easily attacked by liquid resin (vinyl ester resin, unsaturated polyester resin, etc.) impregnated in the reinforcing fiber layer during the production of the FRP composite structure. Performance can be improved.
  • the method for producing an FRP composite structure comprises disposing a reinforcing fiber layer along the surface of the core material for an FRP composite structure, and further comprising disposing the reinforcing fiber layer and the core material for the FRP composite structure.
  • the air in the synthetic resin film is sucked by a vacuum pump, and the liquid resin is passed through the slits and through holes of the core material for the FRP composite structure to each part of the reinforcing fiber layer.
  • the reinforcing fiber layer is impregnated with the liquid resin, and then the liquid resin is cured.
  • the synthetic resin film is a nylon film.
  • an end of the liquid resin supply pipe is connected to an end of the slit, and the supply of the liquid resin is performed from an end of the slit. It is particularly preferable to increase the cross-sectional area at least in the vicinity of the end portion.
  • a part of the liquid resin passes through the slit.
  • the fiber is distributed substantially uniformly over the entire area of the fiber reinforced layer covering the surface of the core material provided with the slit, and is impregnated over substantially the entire area of the fiber reinforced layer.
  • Another part of the liquid resin is sent to the other surface of the core material through the through-hole and distributed to almost the entire area of the fiber reinforced layer covering the other surface through slits on this other surface.
  • the fiber reinforcing layer is impregnated.
  • the liquid resin can be easily distributed to substantially the entire region of the fiber reinforcing layer only by supplying the liquid resin to the end of the slit.
  • the liquid resin can smoothly flow into the slit from the supply pipe having a larger cross-sectional area than the slit.
  • the slit receiving the liquid resin is supplied to each part of the fiber reinforcing layer. This has the advantage that the liquid resin is quickly distributed.
  • a liquid resin supply pipe is arranged between the reinforcing fiber layer and the synthetic resin film in a width direction of the reinforcing fiber layer, and the liquid resin is supplied to the reinforcing fiber layer from a plurality of positions of the supply pipe.
  • the supply pipe is a spiral pipe having a gap for supplying a liquid resin along its longitudinal direction, or a perforated pipe having holes for discharging the liquid resin in its longitudinal direction. It is a tube.
  • the liquid resin is an unsaturated polyester resin or a bullet ester resin.
  • the liquid resin is contained in the unsaturated polyester resin or the vinyl ester resin.
  • the styrene monomer content is 20 to 40% by weight. / 0 is particularly preferred.
  • the content of the styrene monomer in the unsaturated polyester resin is, for example, about 45%, the fluidity of the unsaturated polyester resin is high, and the unsaturated polyester resin can be rapidly distributed to the fiber reinforcing layer.
  • the erosion of the core material increases.
  • by controlling the content of the styrene monomer to preferably 20 to 40% by weight, more preferably 25 to 35% by weight erosion of the core material by the unsaturated polyester or vinyl ester resin is suppressed. Therefore, there is an advantage that the surface property of the FRP composite structure can be improved, and the unsaturated polyester or vinyl ester resin can be distributed quickly.
  • the air in the synthetic resin film is sucked from near one end of the core for the FRP composite structure, and the liquid resin is supplied from near the other end to near one end of the core for the FRP composite structure. It is preferable to perform the steps sequentially.
  • the suction force is effectively applied to the area where the liquid resin is supplied at each point in time, and the liquid resin is applied over substantially the entire area of the core material. Almost uniformly distributed to the fiber reinforcement layer.
  • the liquid resin when the liquid resin is simultaneously supplied to the entire area of the core material, the liquid resin can be uniformly distributed to the fiber reinforcing layer in the vicinity of one end of the core material for performing the vacuum suction. In the vicinity, it is difficult to distribute the liquid resin uniformly because it is hindered by the liquid resin during that time and the suction effect by vacuum suction is not sufficient.
  • the air sucked from the inside of the synthetic resin film is passed through the liquid resin trap, and the separated liquid resin is returned to the liquid resin to be distributed to each part of the reinforcing fiber layer.
  • surplus liquid resin can be reused, and FRP composite structures can be manufactured at lower cost. It is possible to do.
  • the liquid resin is distributed to each part of the reinforcing fiber layer while sucking the air in the synthetic resin film, a residual air layer generated between the reinforcing fiber layer and the synthetic resin film is removed. It is preferable that a needle-shaped suction nozzle is penetrated to remove by suction, and thereafter, the perforation hole formed in the synthetic resin film is sealed by the suction nozzle.
  • the residual air layer prevents impregnation of the reinforcing fiber layer with the liquid resin and causes defects in the FRP composite structure in which no resin is present. There is an advantage that it can be prevented.
  • the reinforcing fiber layer is a glass fiber layer
  • the glass fiber layer is formed of a first glass fiber layer made of only glass fiber extending in one direction and a glass fiber layer extending in another direction substantially orthogonal to the one direction. It must be formed by laminating a second glass fiber layer consisting only of extended glass fiber, be composed of chopped strand mat, or be composed of continuous stainless steel mat Particularly preferred.
  • the glass fiber layer a first glass fiber layer made of only glass fiber extending in one direction, and a second glass fiber layer made of only glass fiber extending in another direction substantially orthogonal to the one direction
  • the liquid resin flows in only one direction in the first glass fiber layer, and the other liquid flows in the second glass fiber layer.
  • the liquid resin quickly spreads throughout the glass fiber layer.
  • a chopped strand mat is used for the above glass fiber layer, the rigidity per thickness of the glass fiber layer is increased, and continuous strand is used.
  • the use of mat has the advantage that the flow of the liquid resin in the glass fiber layer becomes faster and the impregnation time of the liquid resin is further reduced.
  • FIG. 1 is a plan view showing a core material for an FRP composite structure according to a first embodiment.
  • FIG. 2 is an enlarged perspective sectional view showing a part of the core material.
  • FIG. 3 is an enlarged partial cross-sectional view taken along the line III-III of FIG.
  • FIG. 4 is an enlarged partial sectional view showing a modification of the slit.
  • FIG. 5 is a plan view showing a manufacturing facility for manufacturing an FRP composite structure using the above core material.
  • FIG. 6 is a partially enlarged sectional view taken along the line VI-VI of FIG.
  • FIG. 7 is a partially enlarged sectional view corresponding to FIG. 6 and showing a state in which the liquid resin is distributed.
  • FIG. 8 is a partially enlarged sectional view showing a modification of the manufacturing equipment of the above embodiment.
  • FIG. 9 is an enlarged partial cross-sectional view showing a dent formed along the slit.
  • FIG. 10 is a sectional view showing a schematic structure of a filter for separating a liquid resin.
  • FIG. 11 is a schematic diagram showing a circuit for returning the liquid resin separated using the filter to a supply device.
  • FIG. 12 is a schematic perspective view showing an external configuration of the suction nozzle.
  • FIG. 13 is a partial perspective sectional view showing the configuration of the slit tube.
  • FIG. 14 is a partial perspective sectional view showing a configuration of a perforated pipe.
  • FIG. 15 is a schematic diagram showing an apparatus for manufacturing an FRP composite structure in Examples 2 to 5 and Comparative Examples 2 to 4.
  • FIG. 1 is a plan view of a core material 1 (hereinafter simply referred to as a core material 1) for an FRP composite structure
  • FIG. 2 is an enlarged perspective view of the core material 1 showing the vicinity of an upper left corner in FIG. It is sectional drawing.
  • the core material 1 is formed in a substantially rectangular parallelepiped shape as a whole, and a plurality of vertical slits 2 and a plurality of horizontal slits 3 intersect each other on an upper surface which is one surface of the core material 1. It is formed as follows.
  • a plurality of vertical slits 2 and a plurality of horizontal slits 3 are formed on the lower surface which is the other surface of the core material 1 at positions corresponding to the slits 2 and 3 on the upper surface side. .
  • These slits 2 and 3 are provided, for example, by shaving the surface of the core 1 with a predetermined width and depth using a rotary saw blade (not shown) after the core 1 is formed.
  • a through hole 4 having a substantially circular cross section is connected to an electric drill (not shown) so as to connect some of the intersections of the slits 2 and 3 corresponding to each other on the upper surface and the lower surface. It is formed by piercing the core material 1 by using a hole.
  • the slits 2 and 3 are provided with a fiber-reinforcing layer (not shown) along the upper surface and the lower surface of the core material 1, respectively.
  • a flow path is formed in which the liquid resin flows along the upper surface and the lower surface of the core 1, and the through hole 4 allows the liquid resin to have a lower degree of vacuum on either the upper surface or the lower surface of the core 1.
  • a flow path from the side to the side with the higher degree of vacuum is formed.
  • FIG. 3 is an enlarged sectional partial view including the slit 3 along the line III-III in FIG.
  • the slits 2 and 3 have a rectangular cross section. If the width W or depth D of the slits 2 and 3 is too small, or the pitch P1, P If 2 is too large, the liquid resin cannot smoothly flow through the slits 2 and 3 during production of the FRP composite structure by the vacuum assisted resin transfer method, which is not preferable.
  • the smoother the flow of the liquid resin during the above manufacturing there is a problem that the amount of resin remaining in the slits 2 and 3 after the production increases, the production cost increases, and the weight of the FRP composite structure increases.
  • the depth of the slits 2 and 3 increases, the liquid resin in the slits 2 and 3 hardens and shrinks.
  • the FRP composite structure A dent S along the slit 3 occurs on the surface of the FRP composite, and the appearance of the FRP composite structure is impaired.
  • stress may be concentrated on the wire S, and there is a concern that the rigidity of the ERP composite structure may be reduced.
  • the core material 1 may be eroded by the styrene monomer in the liquid resin.
  • the core material 1 is softened or the widths and depths of the slits 2 and 3 are increased, so that the above-mentioned problem is remarkably exhibited.
  • the width of each slit 2 and 3 is approximately 0.5 to 2 mm, the depth is approximately 1 to 4 times the width, and the pitches P 1 and P 2 are 10 to 1 O Om m More preferably, the width is approximately 0.7 to 1.5 mm, the depth is approximately 1.3 to 3 times the width, and the pitches Pl and P2 are approximately 20 to 70 mm.
  • the through hole 4 has a diameter of about 1 to 4 mm, and the vertical and horizontal pitches P 3 and P 4 of about 20 to 20 Omm, and more preferably, The diameter is approximately 1.5 to 3 mm, the pitches P3 and P4 are approximately 40 to 140 mm, and most preferably, the diameter is approximately 2 to 2.5 mm and the pitches P3 and P4 are approximately 60 to 140 mm. It shall be 100 mm.
  • the end of the through-hole 4 shown in FIGS. 1 and 2 is connected to the intersection of the two-way slits 2 and 3 so that the liquid between the through-hole 4 and the two-way slits 2 and 3 is formed.
  • the resin can be moved, but the end of the through hole 4 may be connected to only one of the slits 2 or 3 in one direction.
  • the diameter of the through hole 4 is constant, but the diameter near the end of the through hole 4 communicating with the slits 2 and 3 is, for example, a tapered cross section near the end.
  • the continuous expansion as described above allows the liquid resin to move smoothly between the through hole 4 and the slits 2 and 3.
  • the slits 2 and 3 may have a substantially V-shaped cross section instead of a rectangular cross section.
  • the cross-sectional area of the slits 2 and 3 is about 1/2 of that of the rectangular cross section.
  • the thickness T of the core material 1 may be determined according to the thickness dimension of the FRP composite structure to be manufactured, and the longitudinal and lateral dimensions L 1 and L 2 of the core material 1 are also the same as those of the FRP composite structure. And the lateral direction.
  • the FRP composite structure is large, for example, in which at least one of the vertical or horizontal dimensions L1 and L2 is about 200 mm or more, as described later, a plurality of core materials are used.
  • One may be arranged vertically or horizontally to form one FRP composite structure.
  • the longitudinal and lateral dimensions L 1 and L 2 of the core material 1, which is a constituent unit can be set to, for example, about 500 to 200 mm.
  • the manufacturing equipment 5 includes a molding die 6 made of fiber reinforced resin (FRP) or the like.
  • the shape of the molding die 6 is determined according to the product shape.Here, for example, in order to use the FRP composite structure in a substantially rectangular parallelepiped shape, the planar shape of the molding die 6 is set to be substantially rectangular. I have.
  • FIG. 6 which is an enlarged cross-sectional view taken along the line VI—VI in FIG. 5, a rising portion 7 is provided on the periphery of the molding die 6, and the upper surface of the rising portion 7 is provided on the upper surface.
  • a groove 7a is formed.
  • the groove 7a is filled with a putty 8 (adhesive) made of polyester or the like.
  • the putty 8 is adapted to adsorb so that the peripheral portion of the synthetic resin film 10 used at the time of vacuum suction can be peeled off.
  • the peripheral portion of the synthetic resin film 10 can be sealed using a double-sided adhesive tape instead of the putty 8.
  • a plurality of liquid resin supply devices 11 each composed of a tub or the like in which the liquid resin is stored are arranged on the side of the molding die 6.
  • Each feeder 11 has multiple feeders.
  • One end of the supply pipe 12 is connected, and an on-off valve 13 is attached to each supply pipe 12.
  • Each feed pipe 12 extends to one end in the width direction (upper end in FIG. 5) in the molding die 6, and the other end of each feed pipe 12 has a spiral pipe 14 (supply pipe). ) Is connected at one end.
  • each spiral tube 14 extends along the width direction of the mold 6, and the other end is located at the other end in the width direction within the mold 6.
  • the spiral tube 14 is, for example, a spirally wound metal wire rod 14a, and has a small gap 14 for allowing the liquid resin to leak out. b around the metal wire rod 14a. That is, the spiral tube 14 does not have such a large elasticity as a coil spring, but has a shape in which the gap between the spiral wires in the coil spring is formed extremely small.
  • the size of the gap 14b is such that when the liquid resin is sent from one end to the other end in the spiral tube 14, the amount of liquid resin leakage per unit length of the spiral tube 14 is It is set so that it is almost uniform over the entire area in the longitudinal direction of 14.
  • the pitch P5 of the adjacent spiral tubes 14 is, for example, about 300 to 100 mm, and more preferably about 400 to 600 mm.
  • FIG. 10 is a cross-sectional view showing a schematic configuration of the filter 16. As shown in the figure, the filter 16 has a so-called trap-like configuration.
  • a suction pipe 15 is inserted into the vacuum chamber 16 with its tip directed downward, and a vacuum pipe 161, which communicates with the vacuum pump 20, has a tip near the upper end. It is introduced to become.
  • the positions and directions of the tips of the suction pipe 15 and the vacuum pipe 16 are not limited to the above, but the liquid resin sucked from the suction pipe 15 into the vacuum chamber 160 is scattered or the like, and the vacuum is generated. It is preferable that the positional relationship is set so that it is not sucked into the pipe 16 1.
  • a drain tube 162 for flowing out the liquid resin stored in the vacuum chamber 160 is inserted so that its tip is near the bottom of the vacuum chamber 160.
  • the drain tube 162 is provided with a valve A, and the liquid resin sucked together with air from the suction tube 15 is stored in a vacuum chamber 160, and then the valve A is opened. Thereby, it is possible to flow out from the drain tube 16 2 as appropriate.
  • a valve B for returning the pressure in the vacuum chamber 160 to the atmospheric pressure is provided above the vacuum chamber 160. By closing the valve B during suction and opening it after vacuum suction, the reduced pressure in the vacuum chamber 160 can be quickly returned to the atmospheric pressure.
  • a pump or the like is provided if necessary to allow the liquid resin stored in the vacuum chamber 160 to flow out of the drain tube 162.
  • suction pipe 15 is branched and inserted into a pair of filters 16A and 16B, respectively, and the vacuum inserted into each filter 16A and 16B.
  • the pipes 161 are appropriately joined to communicate with the vacuum pump 20.
  • an on-off valve 163 will be provided for each suction pipe 15, vacuum pipe 161, and drain pipe 162.
  • each on-off valve 16 3 By operating each on-off valve 16 3 as appropriate, one of the filters 16 A and 16 B is used to separate the liquid resin that is sucked in by being mixed with air, and is placed in the vacuum chamber 160.
  • the liquid resin When the liquid resin is stored in a predetermined amount or more, operate each on-off valve 16 3 to switch to use the other of the filter 16 A or the filter 16 B, and switch to vacuum.
  • the discharged liquid resin is discharged into the supply device 11. By repeating this, the liquid resin can be trapped in the filters 16A and 16B without interrupting the production of the FRP composite structure, and the liquid resin can be reused.
  • a vinyl ester resin or an unsaturated polyester resin can be used as the liquid resin.
  • unsaturated polyester resins are preferable because they are relatively inexpensive and can secure the strength of the FRP composite structure after production.
  • the Bier ester resin is more expensive than the unsaturated polyester resin, it has an advantage that it is relatively easy to suppress the uneven pattern generated on the surface of the FRP composite structure. It is a preferred resin in that the surface properties of the body can be improved.
  • the core material 1 is more likely to be eroded as the styrene monomer content increases, whereas if the content is low, the viscosity of the liquid resin increases and the fluidity deteriorates. Therefore, emphasis is placed on the surface properties of the FRP composite structure.
  • the content of the styrene monomer is preferably about 20 to 40% by weight, particularly preferably 25 to 35% by weight.
  • Wood such as hard plastic foam or pulsar can be used as the core material 1.
  • the use of a rigid plastic foam makes it easier to secure the strength of the FRP composite structure after production than a soft plastic foam, and the core has a shape corresponding to the shape of the FRP composite structure to be produced. There is an advantage that the material 1 can be easily formed.
  • a rigid plastic foam a rigid chloride foam, a rigid urethane foam, a rigid acrylic foam, etc. can be used.
  • Crosslinked hard vinyl chloride foams which are difficult to form, are preferred.
  • Examples of the synthetic resin film 10 include a nylon film, a polyvinyl alcohol resin, a Teflon film (trade name: tetrafluoroethylene resin), a butyl rubber film, and the like. Nylon films, which are relatively inexpensive and hardly cause tearing, are particularly suitable.
  • a manufacturing procedure of the FRP composite structure will be described.
  • Each of the feed pipes 12 has flexibility, and although not shown, each feed pipe 12 is bent so that the spiral pipe 14 can be taken out of the molding die 6.
  • the periphery of the synthetic resin film 10 is separated from the putty 8 and the synthetic resin film 10 is removed from the mold 6 and, if necessary, each spiral tube 14 is formed into a mold 6.
  • a fiber reinforcing layer 21 made of glass fiber or the like on the lower surface side is laid on the mold 6.
  • the core material 1 having the slits 2 and 3 and the through hole 4 is disposed on the fiber reinforcing layer 21.
  • the core material 1 having the slits 2 and 3 and the through hole 4 is disposed on the fiber reinforcing layer 21.
  • a plurality of cores 1 are arranged in the vertical or horizontal direction.
  • the fiber reinforcing layer 22 on the upper surface side is laid on the core material 1.
  • each spiral tube 14 is set at the position shown in FIG. 5, and the spiral tubes 14 are arranged on the fiber reinforcing layer 22 so as to extend over substantially the entire region in the width direction of the mold 6.
  • the upper part of the molding die 6 is covered with a synthetic resin film 10 and the peripheral portion of the synthetic resin film 10 is adhered to the putty 8, and the fiber reinforcing layers 21, 22, the core material 1 therebetween, and each spiral The tube 14 is sealed between the mold 6 and the synthetic resin film 10.
  • FIG. 6 shows this state. In FIG. 6, for convenience, the number of the through holes 4 per one core material 1 is shown smaller than that in FIG.
  • each feed pipe 12 and each suction pipe 15 are drawn out from the gap between the molding die 6 and the synthetic resin film 10 to the outside.
  • the synthetic resin film 10 adheres tightly to the periphery of the mold 6 and the surfaces of the feed pipe 12 and the suction pipe 15, air leaks from the periphery of the feed pipe 12 and the suction pipe 15 to the outside.
  • the liquid resin is supplied to the spiral pipe 14 of (1) via the feed pipe 12.
  • the supply device 11 closest to the other end in the longitudinal direction is driven, and the on-off valve 13 of the supply pipe 12 connected to the spiral pipe 14 at the position (1) may be opened.
  • the spiral tube 1 at the position (1) is drawn according to the suction force.
  • the liquid resin 23 leaked from the gap 14 of 4 is impregnated in the fiber reinforcing layer 22 around the spiral tube 14 and the liquid resin 23 that has passed through the fiber collecting layer 22 in the thickness direction is formed. It flows into the slits 2 and 3 on the upper surface side of the core material 1.
  • the liquid resin 23 flowing into the slits 2 and 3 flows through the slits 2 and 3 due to the suction force described above, and further overflows from the slits 2 and 3 into the fiber reinforcing layer 22. Then, the fiber reinforcing layer 22 in the region not yet impregnated with the liquid resin 23 is impregnated.
  • a part of the liquid resin 23 in the slits 2 and 3 flows into the through-hole 4, flows downward in the through-hole 4, and the slits 2 and 3 on the lower surface side of the core material 1. Flows into.
  • the liquid resin 23 flows through the slits 2 and 3 on the lower surface side, and overflows from the slits 2 and 3 into the fiber reinforcing layer 21 to be impregnated in the fiber reinforcing layer 21.
  • the degree of impregnation of the liquid resin 23 into the fiber reinforcing layers 22 and 21 depends on the fiber reinforcement on the surface side.
  • the state in which the layer 22 is impregnated with the liquid resin 23 can be grasped by visual observation through the synthetic resin film 10.
  • the liquid resin 23 is sequentially supplied from the spiral tube 14 on the other end (the left end in FIG.
  • the suction force of the vacuum pump 20 can be effectively applied to the periphery of the portion where the liquid resin is being supplied at that time, and as a result, air
  • the liquid resin 23 can be uniformly impregnated into substantially the entire area of the fiber reinforcing layers 22 and 21 without leaving any layers.
  • the suction nozzle 24 is a needle-shaped tube having a tip cut at an acute angle.
  • the suction nozzle 24 is provided, for example, at a tip of a syringe 25 communicating with a suction pump or the like, and can suck air from the tip of the suction nozzle 24. It has become something.
  • the suction pump and the like and the syringe 25 are connected to each other by a flexible tube or the like having a required length, and the suction nozzle 24 and the syringe 25 are placed on the mold 6. Preferably, it can be easily moved to a desired position. Further, it is preferable to provide a filter or the like in the syringe 25 in order to prevent the liquid resin from flowing into the suction pump or the like.
  • the air layer remains when the liquid resin is supplied, first, the position of the air layer is checked from above the synthetic resin film 10. Since the synthetic resin film 10 is transparent, the air layer can be easily visually confirmed.
  • the suction nozzle 24 is pierced through the synthetic resin film 10 with respect to the air layer, and the tip of the suction nozzle 24 is positioned in the air layer. Then, a suction pump or the like is operated to operate the tip of the suction nozzle 24. Suction residual air. After all the remaining air is sucked, the suction nozzle 24 is pulled out, and the hole created by the penetration is sealed with an adhesive tape or the like. Thus, when the liquid resin was supplied The air layer can be removed.
  • the liquid resin After impregnating the entire area of the fiber reinforced layers 22 and 21 with the liquid resin, the liquid resin is cured so that the fiber reinforced layers 22 and 21 and the cured resin are integrated, and The resin containing the fiber reinforcing layers 22 and 21 is joined to the core 1 to complete the FRP composite structure.
  • core materials 1 When a plurality of core materials 1 are used, adjacent core materials 1 are also integrated with the above resin. This state is shown in FIG.
  • an on-off valve 13 is provided for each feed pipe 12 so that the on / off of the liquid resin supply can be controlled for each spiral pipe 14 so that the suction effect is individual.
  • the supply and the supply of the liquid resin may be controlled by each individual supply device 11.
  • the on-off valve 13 for each feed pipe 12 is not required, so the number of parts can be reduced, the time required for impregnation of the liquid resin can be shortened, and the effect of uniformly impregnating the liquid resin can be obtained. Does not drop much.
  • the spiral resin 14 is used to supply the liquid resin, so that the liquid resin can be supplied substantially uniformly over the entire area of the spiral tube 14 in the longitudinal direction.
  • a slit pipe 26 or a perforated pipe 27 can also be used.
  • the slit pipe 26 is formed by arranging circumferential slit holes 261 on a side peripheral surface of a pipe body 260.
  • the perforated pipe 27 has a plurality of through-holes 271, which are formed on the side peripheral surface of the pipe 27.
  • the width of the slit hole 261, the diameter of the through hole 271, and the distance between the slit holes 261, for example, are the same as the pitches P1 and P2 of the slits 2 and 3 of the core material 1, and the liquid resin It is preferable to set the amount of leakage so as to be substantially uniform over the entire area in the longitudinal direction. Further, the feed pipe 12 is extended so as to extend over the entire area in the width direction of the molding die 6, and the feed pipe 12 is connected to the pipe body. The functions of 260 and 270 may be combined. In this manner, the liquid resin can be supplied onto the fiber reinforcing layer 22 from the slit hole 261 or the through hole 271.
  • the bifurcated end 12a may be connected to the end of the slit 2 in one direction on the upper surface and the lower surface of the core material 1, and the liquid resin may be supplied from the end of the slit 2.
  • the liquid resin will diffuse into the fiber reinforcing layer 22 and the like via the slit 2, but since the cross-sectional area of the slit 2 is usually smaller than the cross-sectional area of the feed pipe 12 By gradually increasing the width and depth near the end 2 a of the slit 2 connected to the feed pipe 12, the cross-sectional area near the end of the slit 2 is almost the same as that of the feed pipe 12. Extension is preferred.
  • the spiral pipe described above can be obtained.
  • the supply efficiency of the liquid resin is substantially the same as that in the case where the liquid resin is supplied from above the fiber reinforcing layer 22 by using 14 or the like.
  • the fiber reinforcing layers 22 and 21 are glass fiber layers
  • a first glass fiber layer composed of only glass fibers extending in one direction for example, in the longitudinal direction of the mold 6
  • a second glass fiber layer made of only glass fibers extending in the other direction substantially perpendicular to the one direction for example, the width direction of the molding die 6
  • the fiber reinforcing layers 22 and 21 are formed.
  • the liquid resin is impregnated into the first glass fiber layer, the liquid resin flows smoothly in the longitudinal direction of the molding die 6 along the direction of the glass fiber in the first glass fiber layer, and the glass resin flows in the second glass fiber layer.
  • the above-mentioned fiber reinforcing layers 22 and 21 are formed into a sheet by processing glass fiber cut to a predetermined length into a sheet-like strand mat, and a continuous fiber having no glass fiber directionality.
  • a strand mat or a combination thereof can also be used. If chopped strand mat is used, the rigidity per thickness increases, and if continuous strand mat is used, the flow of the liquid resin in the fiber reinforcement layers 22 and 21 becomes even faster, and the liquid The resin impregnation time is further reduced.
  • the slits 2 and 3 are provided in the two directions of the upper surface and the lower surface of the core material 1.
  • the slits 2 and 3 may be provided in three or more directions.
  • a diagonal slit can be formed in addition to the vertical and horizontal slits shown in FIGS. 1 and 2. In this case, the flow of the liquid resin through the slit is performed more smoothly.
  • the slits 2 and 3 are provided only on the upper surface and the lower surface of the core material 1 which is the main surface (the surface having a large surface area) of the FRP composite structure to be manufactured.
  • the fiber reinforced layer was placed only on the upper and lower surfaces of the core material 1, but instead of this, slits 2 and 3 were also provided on the side surface of the core material 1, and the core located at the peripheral edge of the FRP composite structure A fiber reinforcing layer may be provided on the side surface of the material 1.
  • the side slits 2 and 3 of the core 1 located at a portion other than the periphery of the FRP composite structure have the same function as the through-hole 4.
  • the core material 1 has a substantially rectangular parallelepiped shape, but the shape of the core material 1 can be arbitrarily changed according to the shape of the FRP composite structure to be manufactured. Since the thickness of the fiber reinforcing layers 22 and 21 is substantially constant, the core 1 is usually What is necessary is just to make the FRP composite structure one size smaller and have a similar shape.
  • the cores 1 arranged in each part may have different shapes according to the shape of the FRP composite structure.
  • a through-hole 4 of 5 mm was formed.
  • the vertical and horizontal pitches P 3 and P 4 of the through holes 4 are each 70 mm.
  • the molding die 6 has a rectangular shape when viewed from above, and the area of the portion where the fiber reinforcement layers 21 and 22 are laid on the inner side of the raised portion 7 is 200 One having a size of 0 mm ⁇ 250 mm was used.
  • the fiber reinforcing layer 21 is laid in the above-mentioned mold 6, a plurality of cores 1 of the above-mentioned size are laid out on the fiber reinforcing layer 21 in rows and columns, and the fiber reinforcing layer 22 is placed on these cores 1.
  • the core material 1 obtained by cutting the core material 1 so as to have a width of approximately 1 Z2 was arranged.
  • the fiber reinforcing layers 21 and 22 five glass mats each having a basis weight of 450 g / m 2 were laminated and used. Was.
  • the upper part of the mold 6 was covered with a nip film 10 having a thickness of about 50 ⁇ , and then, from the left end side in FIG.
  • An unsaturated polyester resin (liquid resin) having a styrene monomer content of 45% by weight was sequentially supplied using a spiral tube 14. The time required for the unsaturated polyester resin to reach the entire surface of the mold 6 was approximately 3 hours. After the impregnation of the unsaturated polyester resin was completed, the curing reaction was completed and the nylon film 10 was released. The unsaturated polyester resin was uniformly dispersed, and the FRP composite structure had a good appearance without air layers. I got
  • the unsaturated polyester resin flows only from the upper surface side to the lower surface side through a small gap at the abutting portion of the adjacent core material 1, so that the unsaturated polyester resin
  • the time required for the resin to spread over substantially the entire surface of the molding die 6 was approximately 5 hours, which was much longer than in Example 1.
  • the unsaturated polyester resin was interrupted in some places, and an air layer was observed.
  • the slit pipe 26 is formed by using a motorized band saw on the circumferential surface of the tubular chloride biel pipe at circumferential intervals of 1 mm in width at intervals of 35 mm.
  • a rectangular glass mat large enough to lay one core material 1 is used, and the fiber reinforcing layer 21 is spread over the mold 6, and the fiber reinforcing layer 21 is placed on the fiber reinforcing layer 21.
  • the above core material 1 was laid, and a fiber reinforcing layer 22 was laid on the core material 1.
  • two chopped strand mats having a basis weight of 450 g / m 2 were laminated and used.
  • the upper portion of the mold 6 was covered with a nylon film 10 having a thickness of about 50, and the peripheral portion was sealed with a double-sided adhesive tape 28 as shown in FIG.
  • the unsaturated polyester resin having a styrene monomer content of 45% by weight was sequentially drawn from the left end side in FIG. 15 using the slit tube 26 while performing suction by the vacuum pump 20.
  • Example 2 100 parts by weight of an unsaturated polyester resin having a styrene monomer content of 30% by weight (Example 3) 1 part by weight of a curing agent MEK peroxide was added to 100 parts by weight. Supplied things.
  • the FRP composite structure was formed in the same manner as in Example 3 except that two layers of continuous strand mat of ASO gZm 2 were used as the fiber reinforcing layers 21 and 22. Obtained.
  • the content of the styrene monomer is 3 0 wt 0/0 of unsaturated polyester resin
  • the time required to reach the entire surface of the mold 6 was 7 minutes.
  • the unevenness pattern that appeared on the surface corresponding to the slits 2 and 3 of the FRP composite structure and the so-called print-through degree were visually observed. The results are shown in Table 1.
  • Mer content the content of the styrene monomer in the unsaturated polyester resin used as the liquid resin weight 0/0 c supply time showed: minutes an unsaturated polyester resin used as the liquid resin is spread over the entire surface of the mold Shown in units.
  • Example 4 the supply time of the unsaturated polyester resin was shortened by using continuous strand mat for the fiber reinforcing layers 22 and 21.
  • An FRP composite structure was obtained in the same manner as in Example 2 except that a vinyl ester resin having a styrene monomer content of 40% by weight was used as the liquid resin.
  • An FRP composite structure was manufactured in the same manner as in Example 2 except that the upper part of the mold 6 was covered with a polyethylene film having a thickness of about 5 O ⁇ m. However, about one minute after the start of vacuum suction, the polyethylene film broke, and the subsequent steps could not be continued.
  • the on-off valve 16 3 on the filter 16 A side is opened and the unsaturated polyester resin having a styrene monomer content of 30% by weight is sucked by the vacuum pump 20.
  • close the on-off valve 16 3 on the filter 16 A side open the on-off valve 16 3 on the filter 16 B side, and switch to suction from the filter 16 B side.
  • the valve A After opening the valve B of the filter 16 A to return the pressure in the vacuum chamber 160 to atmospheric pressure, the valve A is opened and the above unsaturated gas trapped in the filter 16 A from the drain tube 16 2 The polyester resin was fed back, mixed with the unsupplied unsaturated polyester resin, and supplied again from the slit tube 26.
  • the recycled unsaturated polyester resin can be used for the production of an FRP composite structure in the same manner as the unsupplied unsaturated polyester resin, and an FRP composite structure equivalent to that of Example 3 above was obtained.
  • the fiber reinforcing layer 21, the plurality of core materials 1, and the fiber reinforcing layer 22 are sequentially laid in the mold 6, and the upper portion of the mold 6 has a thickness of about 50. / _im of nylon finolem 10 and supplied an unsaturated polyester resin having a styrene monomer content of 45% by weight. At this time, the remaining air layer generated between the fiber reinforcing layer 22 and the nylon film 10 was suctioned and removed using the suction nozzle 24 shown in FIG.
  • the remaining air layer portion is made of the unsaturated polyester resin.
  • Fiber reinforcement layer 21 before resin impregnation Color was approximately 10 to 30 awake.
  • the suction nozzle 24 was inserted into the remaining air layer visually confirmed by penetrating the nylon film 10 at the corresponding location, and suction was removed. The suction time required to remove the residual air layer was within about 1 minute.
  • the present invention provides a core material for an FRP composite structure in which the flow of the liquid resin is smoothly performed, and the liquid resin is uniformly and rapidly distributed to the reinforcing fiber layer laminated on the surface of the core material. This is useful as a method for manufacturing a core material for an FRP composite structure, which can improve the quality of the body and reduce the time required for manufacturing the FRP composite structure.

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  • Moulding By Coating Moulds (AREA)

Abstract

Cette invention se rapporte à un matériau de noyau pour une structure composite en résine renforcée par des fibres, ce matériau se caractérisant en ce qu'il comporte des fentes (2, 3) sur sa surface et également des trous traversants (4) qui le traversent dans le sens de l'épaisseur. Le placement d'une couche de fibres de renforcement sur la surface de ce matériau de noyau et l'imprégnation de la couche de fibres de renforcement par une résine liquide au moyen de la technique de transfert de résine assisté par le vide permet à la résine liquide d'être répartie uniformément et rapidement dans la couche de fibres de renforcement présente sur chaque surface de ce matériau de noyau, ce qui a pour conséquence l'amélioration de la qualité de la structure composite FRP (plastique renforcé par des fibres) qui en résulte, la réduction du temps requis pour la production de cette structure et la réduction de ses coûts de production.
PCT/JP2002/000539 2001-01-26 2002-01-24 Materiau de noyau pour structure composite en resine renforcee par des fibres et procede de production d'une structure composite en resine renforcee par des fibres a l'aide de ce materiau Ceased WO2002058915A1 (fr)

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JP2002559232A JPWO2002058915A1 (ja) 2001-01-26 2002-01-24 繊維強化樹脂複合構造体用芯材、及びそれを用いた繊維強化樹脂複合構造体の製造方法
KR1020027009337A KR20020086473A (ko) 2001-01-26 2002-01-24 섬유강화수지 복합구조체용 코어재 및 그것을 사용한섬유강화수지 복합구조체의 제조방법

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JP2006130733A (ja) * 2004-11-04 2006-05-25 Yokohama Rubber Co Ltd:The 繊維強化樹脂成形物の製造方法
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EP1990178A1 (fr) 2007-05-07 2008-11-12 Siemens Aktiengesellschaft Procédé de production de structures stratifiées renforcées par des fibres
NL1036212C2 (nl) * 2008-11-19 2010-05-21 Fibercore Europ B V Werkwijze voor het vervaardigen van een paneel, alsmede kern daarvoor.
CN102745247A (zh) * 2012-07-18 2012-10-24 奇瑞汽车股份有限公司 车顶棚
JP2012236304A (ja) * 2011-05-11 2012-12-06 Universal Shipbuilding Corp Ｆｒｐ構造体の製造方法及び製造装置
WO2012163690A1 (fr) * 2011-05-27 2012-12-06 Gurit (Uk) Ltd Âme de mousse pour objet stratifié composite, et son procédé de fabrication
CN103587130A (zh) * 2013-10-15 2014-02-19 南京航空航天大学 微波固化纤维增强树脂基复合材料构件的方法及装置
ITTV20130043A1 (it) * 2013-04-03 2014-10-04 Enrico Pillon Metodo di produzione di un pannello da tamponamento per porte e serramenti similari
CN106079485A (zh) * 2016-07-27 2016-11-09 江苏恒神股份有限公司 新型碳纤维织物定型装置及工艺
GB2550357A (en) * 2016-05-16 2017-11-22 Hexcel Reinforcements Uk Ltd Moulding materials
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EP3812140A1 (fr) * 2019-10-24 2021-04-28 Diab International AB Composants sandwich composites

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JP2005335242A (ja) * 2004-05-27 2005-12-08 Toho Tenax Co Ltd サンドイッチ積層板の製造方法
CN100395096C (zh) * 2004-07-28 2008-06-18 上特技材有限公司 一种玻璃纤维强化塑胶复合结构体的制造方法
JP2006130733A (ja) * 2004-11-04 2006-05-25 Yokohama Rubber Co Ltd:The 繊維強化樹脂成形物の製造方法
JP2008265108A (ja) * 2007-04-18 2008-11-06 Toyota Motor Corp 繊維強化プラスチック
EP1990178A1 (fr) 2007-05-07 2008-11-12 Siemens Aktiengesellschaft Procédé de production de structures stratifiées renforcées par des fibres
NL1036212C2 (nl) * 2008-11-19 2010-05-21 Fibercore Europ B V Werkwijze voor het vervaardigen van een paneel, alsmede kern daarvoor.
WO2010059048A3 (fr) * 2008-11-19 2010-09-16 Fibercore Europe B.V. Procédé de production d'un panneau et d'une âme pour celui-ci
CN102256772A (zh) * 2008-11-19 2011-11-23 纤维核心Ip公司 板件制造方法及其模芯
EA033650B1 (ru) * 2008-11-19 2019-11-13 Fibercore Ip Bv Способ изготовления панели и панель, изготовленная этим способом
US10245765B2 (en) 2008-11-19 2019-04-02 Fibercore Ip B.V. Method of producing a panel and a core therefor
CN102256772B (zh) * 2008-11-19 2014-10-22 纤维核心Ip公司 板件制造方法及其模芯
AU2009318212B2 (en) * 2008-11-19 2015-03-12 Fibercore Ip B.V. Method of producing a panel and a core therefor
US9314977B2 (en) 2008-11-19 2016-04-19 Fibercore Ip B.V. Method of producing a panel and a core therefor
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JP2012236304A (ja) * 2011-05-11 2012-12-06 Universal Shipbuilding Corp Ｆｒｐ構造体の製造方法及び製造装置
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