JP2002248694A - Method for molding fiber reinforced composite material - Google Patents
Method for molding fiber reinforced composite materialInfo
- Publication number
- JP2002248694A JP2002248694A JP2001050505A JP2001050505A JP2002248694A JP 2002248694 A JP2002248694 A JP 2002248694A JP 2001050505 A JP2001050505 A JP 2001050505A JP 2001050505 A JP2001050505 A JP 2001050505A JP 2002248694 A JP2002248694 A JP 2002248694A
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- reinforced composite
- molding
- fiber
- partially impregnated
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000000465 moulding Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 title claims abstract description 22
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 19
- 239000012783 reinforcing fiber Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 30
- 239000011347 resin Substances 0.000 description 30
- 239000011159 matrix material Substances 0.000 description 13
- 239000011800 void material Substances 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 102100034871 C-C motif chemokine 8 Human genes 0.000 description 1
- 102100031005 Epididymal sperm-binding protein 1 Human genes 0.000 description 1
- 101000946794 Homo sapiens C-C motif chemokine 8 Proteins 0.000 description 1
- 101001063556 Homo sapiens Epididymal sperm-binding protein 1 Proteins 0.000 description 1
- 101000984186 Homo sapiens Leukocyte immunoglobulin-like receptor subfamily B member 4 Proteins 0.000 description 1
- 102100025578 Leukocyte immunoglobulin-like receptor subfamily B member 4 Human genes 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 210000003660 reticulum Anatomy 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、部分含浸プリプレ
グを用いた繊維強化複合材料の成形方法に関し、とく
に、高い生産性をもって繊維強化複合材料を成形するこ
とが可能な成形方法に関する。The present invention relates to a method for molding a fiber-reinforced composite material using a partially impregnated prepreg, and more particularly to a molding method capable of molding a fiber-reinforced composite material with high productivity.
【０００２】[0002]
【従来の技術】繊維強化複合材料の成形法の一つとし
て、強化繊維基材にマトリックス樹脂を含浸させた中間
体であるプリプレグを用いる方法がある。プリプレグの
形態にはシート状と紐（あるいはテープ）状の２種があ
るが、シート状のプリプレグの方が多く用いられてい
る。このような成形法を用いる具体的な用途としては、
航空機部材、船舶部材、風車ブレード、ゴルフシャフ
ト、釣り竿、ラケットなどがある。2. Description of the Related Art As one method of molding a fiber-reinforced composite material, there is a method of using a prepreg, which is an intermediate obtained by impregnating a matrix resin into a reinforcing fiber base material. There are two types of prepregs, a sheet type and a string (or tape) type, and the sheet type prepreg is more often used. Specific applications using such a molding method include:
There are aircraft members, ship members, windmill blades, golf shafts, fishing rods, rackets, and the like.
【０００３】従来のシート状プリプレグは、ほとんどが
マトリックス樹脂を強化繊維に完全に含浸したものが使
われてきた。しかし、最近では、強化繊維にマトリック
ス樹脂を部分的に含浸したプリプレグを用いる成形方法
が提案されている。以後部分的に含浸したプリプレグの
ことを「部分含浸プリプレグ」と呼ぶ。その代表的な構
成は、強化繊維層／マトリックス樹脂層の２層から成る
もの、マトリックス樹脂層／強化繊維層／マトリックス
樹脂層の３層からなるもの、強化繊維層／マトリックス
樹脂層／強化繊維層の３層からなるものの３種である。
国際公開特許WO00/27632号公報に具体例が記載されてい
る。Most of the conventional sheet prepregs have been completely impregnated with a matrix resin in a reinforcing fiber. However, recently, a molding method using a prepreg in which a reinforcing fiber is partially impregnated with a matrix resin has been proposed. Hereinafter, the prepreg partially impregnated is referred to as “partially impregnated prepreg”. Typical configurations are those composed of two layers of reinforcing fiber layer / matrix resin layer, those composed of three layers of matrix resin layer / reinforced fiber layer / matrix resin layer, reinforcing fiber layer / matrix resin layer / reinforced fiber layer. These are three types of three layers.
A specific example is described in WO 00/27632.
【０００４】この部分含浸プリプレグを用いた成形方法
として、国際公開特許WO 00/27632号公報には、ツール
面（下型）の上に該部分含浸プリプレグをレイアップ
し、真空フィルムとシーリング材でバギングした後、加
熱硬化し、続いて得られた製品を脱型する方法が記載さ
れている。しかしこの方法は、真空フィルムとシーリン
グ材でバギングする工程において、熟練した作業者が大
変長い時間をかけているなど、成形サイクルが長くなる
ため大量生産には不向きである。使用する型の形状が複
雑になれば、更に時間がかかることは言うまでもない。[0004] As a molding method using the partially impregnated prepreg, WO 00/27632 discloses a method in which the partially impregnated prepreg is laid up on a tool surface (lower die), and a vacuum film and a sealing material are used. A method is described in which after bagging, heat curing and subsequent demolding of the resulting product. However, this method is not suitable for mass production due to a long molding cycle, such as a skilled worker taking a very long time in the step of bagging with a vacuum film and a sealing material. Needless to say, it takes more time if the shape of the mold used is complicated.
【０００５】また、真空フィルムを簡易上型として用い
る場合、真空フィルムと成形品の間に隙間が生じ、該隙
間部がボイドになったり、あるいは樹脂リッチ部分とな
ったりし、所望の成形品を得ることが難しい。さらにこ
のようなボイドや樹脂リッチ部分は、外力が加わったと
き破壊の開始点となるので、機械的物性の低下を招くお
それがある。When a vacuum film is used as a simple upper mold, a gap is formed between the vacuum film and the molded product, and the gap becomes a void or a resin-rich portion. Difficult to get. Further, such voids and resin-rich portions serve as starting points of destruction when an external force is applied, and thus may cause deterioration in mechanical properties.
【０００６】さらに、成形する最終形状が複雑であれば
あるほど、真空フィルムでバギングする際フィルムにし
わが寄るため、得られる製品の表面にしわの跡が残り、
表面意匠上問題があった。Further, the more complicated the final shape to be molded, the more the film becomes wrinkled when bagging with a vacuum film, so that traces of wrinkles remain on the surface of the obtained product,
There was a problem in the surface design.
【０００７】またこの方法では、一度使用した真空フィ
ルムとシーリング材を再利用することが出来ないので、
成形ごとに多量のゴミを出すことになり、環境に良くな
く、かつ、経済性が悪いことが指摘される。Further, in this method, it is not possible to reuse the vacuum film and the sealing material which have been used once.
It is pointed out that a large amount of trash is discharged for each molding, which is not good for the environment and economical.
【０００８】[0008]
【発明が解決しようとする課題】本発明の課題は、ボイ
ドが少なく、表面意匠性に優れた大面積の成形品を生産
性良く製造することができる、部分含浸プリプレグを用
いた繊維強化複合材料の成形方法を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a fiber-reinforced composite material using a partially impregnated prepreg, which is capable of producing a large-area molded product having little voids and excellent surface design with high productivity. To provide a molding method.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に、本発明に係る繊維強化複合材料の成形方法は、上下
型を使って繊維強化複合材料を成形するに際し、得よう
とする成形品の最終形状を内面に有している上下型の間
に、部分含浸プリプレグを配置した後、該上下型を閉
じ、続いて該上下型内を減圧することを特徴とする方法
からなる。Means for Solving the Problems In order to solve the above-mentioned problems, a method for molding a fiber-reinforced composite material according to the present invention is a method for molding a fiber-reinforced composite material using an upper and lower mold. After the partially impregnated prepreg is placed between the upper and lower molds having the final shape on the inner surface, the upper and lower molds are closed, and then the inside of the upper and lower molds is depressurized.
【００１０】[0010]
【発明の実施の形態】以下に、本発明について、望まし
い実施の形態とともに詳細に説明する。本発明において
は上下型を用いて繊維強化複合材料を成形する。用いる
上下型としては、金属製型、樹脂製型、シリコン製型の
いずれでもよいが、実質的に型の内面が得ようとする成
形品の最終形状を有していなければならない。型の内面
が得ようとする成形品の最終形状を有していないと、型
と型内部に配置する部分含浸プリプレグとの間に隙間が
生じ、所望の成形品を得ることが出来ない。すなわち部
分含浸プリプレグに使用されているマトリックス樹脂量
が少ないと、該隙間部がボイドとなり、マトリックス樹
脂量が多いと該隙間部が樹脂リッチ部分となってしま
う。このような、ボイドや樹脂リッチ部分が内在する成
形品は、その成形品に外力が加わったとき、該ボイドや
樹脂リッチ部分が破壊の開始点となり、機械物性の低下
を招き問題となる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with preferred embodiments. In the present invention, the fiber reinforced composite material is molded using the upper and lower molds. The upper and lower molds to be used may be any of a metal mold, a resin mold, and a silicon mold, but they must have substantially the final shape of the molded article to be obtained on the inner surface of the mold. If the inner surface of the mold does not have the final shape of the molded article to be obtained, a gap is formed between the mold and the partially impregnated prepreg disposed inside the mold, and a desired molded article cannot be obtained. That is, if the amount of the matrix resin used in the partially impregnated prepreg is small, the gap becomes a void, and if the amount of the matrix resin is large, the gap becomes a resin-rich portion. In such a molded article having a void or a resin-rich portion therein, when an external force is applied to the molded article, the void or the resin-rich portion serves as a starting point of destruction, which causes a problem of deteriorating mechanical properties.
【００１１】また、このような成形方法では、部分含浸
プリプレグを型内に配置する以外の工程を機械化するこ
とが出来るため、大量生産する場合、機械化するのにか
かる費用以上に成形コストを安価にすることが可能とな
る。また、今回真空フィルムの代わりに使用した上型
は、複数回使用可能であり、環境に優しく、かつ、経済
性も向上する。In addition, in such a molding method, steps other than disposing the partially impregnated prepreg in the mold can be mechanized. Therefore, when mass-produced, the molding cost is lower than the cost required for mechanization. It is possible to do. In addition, the upper mold used in place of the vacuum film this time can be used a plurality of times, which is environmentally friendly and improves the economic efficiency.
【００１２】本発明において使用する部分含浸プリプレ
グの強化繊維としては、ガラス繊維、アラミド繊維、炭
素繊維、ボロン繊維などが好ましく用いられる。複数種
の強化繊維を組み合わせて用いてもよい。強化繊維の形
態は、シード状であれば、あらゆる公知の形態が可能
で、織物、ニット、マット、ステッチドファブリックな
どが好ましく用いられる。As the reinforcing fibers of the partially impregnated prepreg used in the present invention, glass fibers, aramid fibers, carbon fibers, boron fibers and the like are preferably used. A plurality of types of reinforcing fibers may be used in combination. As for the form of the reinforcing fiber, any known form is possible as long as it is in a seed form, and a woven fabric, a knit, a mat, a stitched fabric and the like are preferably used.
【００１３】本発明における部分含浸プリプレグに用い
るマトリックス樹脂としては、熱硬化性樹脂、熱可塑性
樹脂のいずれも用いることができる。As the matrix resin used in the partially impregnated prepreg in the present invention, either a thermosetting resin or a thermoplastic resin can be used.
【００１４】熱硬化性樹脂としては、未硬化のあるいは
半硬化した一液型樹脂が用いることができる。特にエポ
キシ樹脂、フェノール樹脂、シアネート樹脂、ビスマレ
イミド樹脂などが好ましく用いられる。As the thermosetting resin, an uncured or semi-cured one-pack type resin can be used. Particularly, epoxy resin, phenol resin, cyanate resin, bismaleimide resin and the like are preferably used.
【００１５】熱可塑性樹脂としては、アクリル樹脂、ポ
リオレフィン、ポリアミド、ポリエステル、ポリカーボ
ネート、ポリウレタン、ポリイミド、ポリスルホン、ポ
リフェニレンスルフィド、ポリエーテルエーテルケトン
などが好ましく用いられる。As the thermoplastic resin, acrylic resin, polyolefin, polyamide, polyester, polycarbonate, polyurethane, polyimide, polysulfone, polyphenylene sulfide, polyether ether ketone, and the like are preferably used.
【００１６】本発明の部分含浸プリプレグを用いた繊維
強化複合材料の成形方法では、上下型の間に部分含浸プ
リプレグを配置した後、該上下型を閉じ、続いて、該上
下型内を減圧して、部分含浸プリプレグ内に内包してい
る空気を脱気する。減圧方法としては真空ポンプ等を利
用することが出来る。減圧時の圧力としては−０．１Ｍ
Ｐａまで減圧すれば最も良いが、−０．０４ＭＰａ以下
まで減圧すれば、基材に内在する空気を十分に除去する
ことが出来る。減圧時の圧力が−０．０４ＭＰａより大
きいと、得られる成形品の中にボイドが残留してしま
い、良好な成形品を得ることが出来ない。また、成形品
に外力が加わったとき、該ボイドが破壊の開始点とな
り、機械物性の低下を招き問題である。さらにこのよう
な減圧により表面ボイドも同時に減り、意匠性に優れた
成形品を得ることが出来る。In the method of molding a fiber-reinforced composite material using the partially impregnated prepreg according to the present invention, after disposing the partially impregnated prepreg between the upper and lower molds, the upper and lower molds are closed, and then the pressure in the upper and lower molds is reduced. To degas the air contained in the partially impregnated prepreg. A vacuum pump or the like can be used as a decompression method. The pressure during depressurization is -0.1M
It is best to reduce the pressure to Pa, but if the pressure is reduced to -0.04 MPa or less, the air existing in the substrate can be sufficiently removed. If the pressure at the time of decompression is larger than -0.04 MPa, voids will remain in the obtained molded product, and a good molded product cannot be obtained. Further, when an external force is applied to the molded product, the void becomes a starting point of destruction, which causes a problem that mechanical properties deteriorate. Furthermore, the surface voids are simultaneously reduced by such reduced pressure, and a molded product having excellent design properties can be obtained.
【００１７】本発明においては、型内を減圧して脱気し
た後、部分含浸プリプレグの余分な樹脂を絞り出し、得
られる成形品の強化繊維体積含有率を高くするために、
０．３ＭＰａ以上１５ＭＰａ以下の圧力を得ようとする
成形品に加えることが好ましい。加える圧力が０．３Ｍ
Ｐａより小さいと、部分含浸プリプレグの余分な樹脂を
絞り出すことが出来ず、１５ＭＰａより大きいと強化繊
維が潰されてしまい、十分な機械物性を発現できない。
０．５ＭＰａ以上１０ＭＰａ以下の圧力であればさらに
好ましい。上型に外力を与える方法としては、クランプ
による締め付け、油圧プレス、エアー圧プレス、水圧プ
レス、上型の自重を利用する方法など様々な方法がある
が、成形品に圧力が伝われば、いかなる方法であっても
構わない。In the present invention, after the inside of the mold is depressurized and degassed, excess resin in the partially impregnated prepreg is squeezed out, and in order to increase the reinforcing fiber volume content of the obtained molded article,
It is preferable to apply the pressure to a molded product in which a pressure of 0.3 MPa to 15 MPa is to be obtained. 0.3M applied pressure
If it is smaller than Pa, the excess resin of the partially impregnated prepreg cannot be squeezed out, and if it is larger than 15 MPa, the reinforcing fibers are crushed, and sufficient mechanical properties cannot be exhibited.
More preferably, the pressure is 0.5 MPa or more and 10 MPa or less. There are various methods for applying external force to the upper mold, such as clamping with a clamp, hydraulic press, pneumatic press, hydraulic press, and the method of using the weight of the upper mold, but any method can be used if pressure is transmitted to the molded product. It does not matter.
【００１８】本発明において、下型が非可撓性であり、
上型が可撓性であると、成形時加える圧力が製品全体に
わたり均一に負荷されるので好ましい。特に部分含浸プ
リプレグにおいては、マトリックス樹脂の分布がミクロ
的には不均一であるため、上型が変形可能であることに
より、減圧時に該上型が変形して、マトリックス樹脂を
均一に分散させる効果が顕著となる。ここで言う可撓性
とは、手の力で、撓ませることが出来る程度の特性を言
う。具体的には、ゴム質材であることが好ましい。上下
型とも非可撓性であると、成形品に加わる圧力が偏圧力
になることがあるため、得られた成形品の強化繊維の体
積含有率が場所によって異なり、品質が安定しないとい
う問題がある。さらに、強化繊維の体積含有率が違う、
すなわち樹脂の体積含有率が異なるため、樹脂の硬化収
縮ならびに熱膨張に起因する、成形品表面の凸凹（うね
り）が発生するため好ましくない。In the present invention, the lower mold is inflexible,
It is preferable that the upper mold is flexible because the pressure applied during molding is uniformly applied over the entire product. In particular, in the partially impregnated prepreg, since the distribution of the matrix resin is microscopically non-uniform, the upper mold can be deformed, so that the upper mold is deformed when depressurized, and the matrix resin is uniformly dispersed. Is remarkable. The term "flexibility" as used herein refers to a characteristic that can be flexed by hand force. Specifically, it is preferably a rubber material. If both the upper and lower molds are inflexible, the pressure applied to the molded product may be biased. is there. Furthermore, the volume content of the reinforcing fibers is different,
That is, since the volume content of the resin is different, unevenness (undulation) of the molded product surface due to curing shrinkage and thermal expansion of the resin occurs, which is not preferable.
【００１９】本発明で用いる部分含浸プリプレグは、強
化繊維体積含有量が３５〜６５％であるのが好ましい。
強化繊維体積含有量が３５％未満であると、得られた成
形品の機械物性発現率が低下するので好ましくなく、６
５％を超えると、成形品の表面に未含浸部分が出来るな
ど、意匠性の理由から好ましくない。さらに好ましくは
４５〜６０％の範囲である。The partially impregnated prepreg used in the present invention preferably has a reinforcing fiber volume content of 35 to 65%.
When the volume content of the reinforcing fibers is less than 35%, the mechanical property expression rate of the obtained molded article is reduced, which is not preferable.
If it exceeds 5%, unimpregnated portions are formed on the surface of the molded product, which is not preferable for reasons of design. More preferably, it is in the range of 45 to 60%.
【００２０】本発明の繊維強化複合材料の成形方法は、
比較的面積の大きい（たとえば、１ｍ2 以上の）板状の
複合材料の成形に適しており、航空機のフェアリングや
自動車の外板（ボンネットやフェンダー）、および自動
車の構造部材（フレーム、シャフト、サスペンション）
の製造に好適である。The method for molding the fiber-reinforced composite material of the present invention comprises:
It is suitable for forming plate-shaped composite materials having a relatively large area (for example, 1 m 2 or more), and is used for aircraft fairings and automobile skins (bonnets and fenders), and automobile structural members (frames, shafts, suspension)
It is suitable for the production of
【００２１】[0021]
【実施例】以下の原料を加熱混合して一液型エポキシ樹
脂組成物を調製した。 “エポトート”YD-128（東都化成（株）製エポキシ樹脂） ６４重量部 “エピコート”1007 （ジャパン・エポキシ・レジン社製エポキシ樹脂） ３６重量部 ジシアンジアミド ３重量部 “オミキュア”94 ２重量部EXAMPLES The following materials were mixed under heating to prepare a one-pack type epoxy resin composition. "Epototo" YD-128 (Epoxy resin manufactured by Toto Kasei) 64 parts by weight "Epicoat" 1007 (Epoxy resin manufactured by Japan Epoxy Resin) 36 parts by weight Dicyandiamide 3 parts by weight "Omicure" 94 2 parts by weight
【００２２】このエポキシ樹脂を離型紙上に320g/m2の
目付になるよう300mmの幅でコーティングして樹脂フィ
ルムを作成した。コーティング面にポリエステルフィル
ムを被覆して巻き取った。This epoxy resin was coated on a release paper with a width of 300 mm so as to have a basis weight of 320 g / m 2 to prepare a resin film. The coated surface was covered with a polyester film and wound up.
【００２３】目付190g/m2の炭素繊維平織クロス（“ト
レカ”CO7373、東レ（株）製）を1m×1mの正方形に切り
出した。切り出した炭素繊維クロス上に樹脂フィルムの
ポリエチレンフィルムをはぎ取って、アイロンで軽く押
さえた後離型紙をはぎ取った。もう一枚の炭素繊維クロ
スを被せ、室温、大気圧で圧着して強化繊維層／マトリ
ックス樹脂層／強化繊維層からなる部分含浸プリプレグ
を得た。A carbon fiber plain woven cloth having a basis weight of 190 g / m 2 (“Treca” CO7373, manufactured by Toray Industries, Inc.) was cut into a 1 mx 1 m square. The polyethylene film of the resin film was peeled off on the cut carbon fiber cloth, and the release paper was peeled off after pressing lightly with an iron. Another carbon fiber cloth was covered and pressed at room temperature and atmospheric pressure to obtain a partially impregnated prepreg composed of a reinforcing fiber layer / a matrix resin layer / a reinforcing fiber layer.
【００２４】図１、２に示すように、得られた部分含浸
プリプレグ３を４枚、アルミ製の下型１に積層し、さら
に部分含浸プリプレグ３上にピールプライ５（ナイロン
製織布）を積層した。このとき該上下型内を均一に減圧
するため、ピールプライ５と真空吸引ライン８が接触し
ていることが重要である。その後、内面が最終形状を有
するとともに可撓性を有する、厚さ３mmのシリコン製上
型２で閉型した後、ロータリー真空ポンプにて型内を−
０．０８ＭＰａまで減圧し、部分含浸プリプレグ３の脱
気を行った。このとき、上型２の周囲上に真空引き用補
助おもり４をセットした。As shown in FIGS. 1 and 2, four of the obtained partially impregnated prepregs 3 are laminated on an aluminum lower mold 1, and a peel ply 5 (a nylon woven fabric) is further laminated on the partially impregnated prepreg 3. did. At this time, it is important that the peel ply 5 and the vacuum suction line 8 are in contact with each other in order to uniformly reduce the pressure in the upper and lower molds. After that, the inner surface is closed with a 3 mm thick silicon upper mold 2 having a final shape and flexibility, and then the inside of the mold is reduced with a rotary vacuum pump.
The pressure was reduced to 0.08 MPa, and the partially impregnated prepreg 3 was degassed. At this time, an auxiliary weight 4 for evacuation was set around the upper mold 2.
【００２５】次に、上下型を圧力チャンバー６内に移動
し、その圧力チャンバー６内にエアー注入孔７を介して
エアーを注入することで、成形体に２ＭＰａの圧力を加
え、続いて、圧力チャンバー６内の温度を赤外線ヒータ
ー（図示略）で85℃にし、１２時間硬化した。Next, the upper and lower molds are moved into the pressure chamber 6 and air is injected into the pressure chamber 6 through the air injection holes 7 to apply a pressure of 2 MPa to the molded body. The temperature in the chamber 6 was set to 85 ° C. by an infrared heater (not shown), and curing was performed for 12 hours.
【００２６】得られた成形体は、周辺部、中央部とも２
％未満のボイド率であり、繊維体積含有率はどの部分も
５０〜５５％の範囲に入っていた。また、得られた成形
体表面を目視で観察したところ、表面ボイドもなく、顔
がゆがみ無く写っていた。なお、シリコン製上型２は、
成形後も損傷はなく、再利用が可能であった。[0026] The obtained molded body was 2 parts at both the peripheral part and the central part.
% Void fraction and the fiber volume content was in the range of 50-55% for all parts. In addition, when the surface of the obtained molded body was visually observed, there was no surface void and the face was imaged without distortion. In addition, the upper mold 2 made of silicon
There was no damage after molding, and it could be reused.
【００２７】[0027]
【発明の効果】以上説明したように、本発明に係る繊維
強化複合材料の成形方法によれば、ボイドが少なく、表
面意匠性に優れた大面積の成形品を生産性良く成形する
ことが出来る。As described above, according to the method of molding a fiber-reinforced composite material according to the present invention, a large-area molded article having few voids and excellent surface design can be molded with high productivity. .
【図１】本発明の実施例における成形の様子を示す、成
形装置の概略縦断面図である。FIG. 1 is a schematic longitudinal sectional view of a molding apparatus showing a state of molding in an embodiment of the present invention.
【図２】図１の装置の部分概略平面図である。FIG. 2 is a partial schematic plan view of the apparatus of FIG. 1;
１ アルミ製下型 ２ シリコン製上型 ３ 部分含浸プリプレグ ４ 真空引き用補助おもり ５ ピールプライ ６ 圧力チャンバー ７ エアー注入孔 ８ 真空吸引ライン Reference Signs List 1 lower mold made of aluminum 2 upper mold made of silicon 3 partially impregnated prepreg 4 auxiliary weight for evacuation 5 peel ply 6 pressure chamber 7 air injection hole 8 vacuum suction line
フロントページの続き Ｆターム(参考） 4F205 AA21 AA39 AC03 AD16 AG03 AH18 AH31 AJ02 AJ03 AJ05 AK04 AM28 AM32 AR02 HA08 HA14 HA24 HA33 HA34 HA35 HA45 HB01 HC05 HC06 HC07 HC14 HC16 HC17 HE12 HF30 HK03 HK31 HL24 HM18 HT02 HT13 Continued on front page F-term (reference) 4F205 AA21 AA39 AC03 AD16 AG03 AH18 AH31 AJ02 AJ03 AJ05 AK04 AM28 AM32 AR02 HA08 HA14 HA24 HA33 HA34 HA35 HA45 HB01 HC05 HC06 HC07 HC14 HC16 HC17 HE12 HF30 HK03 HK31 HL24 HM18 HT18 HT24
Claims (4)
するに際し、得ようとする成形品の最終形状を内面に有
している上下型の間に、部分含浸プリプレグを配置した
後、該上下型を閉じ、続いて該上下型内を減圧すること
を特徴とする、繊維強化複合材料の成形方法。When forming a fiber reinforced composite material using an upper and lower mold, a partially impregnated prepreg is placed between an upper and lower mold having the final shape of a molded article to be obtained on an inner surface thereof. A method for molding a fiber-reinforced composite material, comprising closing the upper and lower molds and then reducing the pressure in the upper and lower molds.
ＭＰａ以上１５ＭＰａ以下の圧力を、得ようとする成形
品に加えることを特徴とする、請求項１記載の繊維強化
複合材料の成形方法。2. Applying an external force to the upper mold,
The method for molding a fiber-reinforced composite material according to claim 1, wherein a pressure of not less than MPa and not more than 15 MPa is applied to a molded product to be obtained.
あることを特徴とする、請求項１または２記載の繊維強
化複合材料の成形方法。3. The method for molding a fiber-reinforced composite material according to claim 1, wherein the lower mold is inflexible and the upper mold is flexible.
量が３５〜６５％であることを特徴とする、請求項１〜
３のいずれかに記載の繊維強化複合材料の成形方法。4. The partially impregnated prepreg having a reinforcing fiber volume content of 35 to 65%.
3. The method for molding a fiber-reinforced composite material according to any one of the above items 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050505A JP2002248694A (en) | 2001-02-26 | 2001-02-26 | Method for molding fiber reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050505A JP2002248694A (en) | 2001-02-26 | 2001-02-26 | Method for molding fiber reinforced composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002248694A true JP2002248694A (en) | 2002-09-03 |
Family
ID=18911447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001050505A Pending JP2002248694A (en) | 2001-02-26 | 2001-02-26 | Method for molding fiber reinforced composite material |
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| Country | Link |
|---|---|
| JP (1) | JP2002248694A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172180A (en) * | 2003-12-15 | 2005-06-30 | Yamagami Material Technologies Inc | Method of manufacturing structure of fiber-reinforced plastic |
| JP2010507504A (en) * | 2006-10-23 | 2010-03-11 | コンストリュクシオン・アンデュストリエル・ド・ラ・メディテラネ・セーエヌイーエム | Composite tool for molding cylinder shapes |
| JP2019516592A (en) * | 2016-05-24 | 2019-06-20 | ゼネラル・エレクトリック・カンパニイ | System and method for forming laminate material |
| WO2022190669A1 (en) * | 2021-03-09 | 2022-09-15 | 帝人株式会社 | Method for producing molded body |
| JP2023042641A (en) * | 2021-09-15 | 2023-03-28 | トヨタ自動車株式会社 | Method for manufacturing joint component containing fiber reinforced resin |
| US11691356B2 (en) | 2021-02-08 | 2023-07-04 | General Electric Company | System and method for forming stacked materials |
-
2001
- 2001-02-26 JP JP2001050505A patent/JP2002248694A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172180A (en) * | 2003-12-15 | 2005-06-30 | Yamagami Material Technologies Inc | Method of manufacturing structure of fiber-reinforced plastic |
| JP2010507504A (en) * | 2006-10-23 | 2010-03-11 | コンストリュクシオン・アンデュストリエル・ド・ラ・メディテラネ・セーエヌイーエム | Composite tool for molding cylinder shapes |
| JP2019516592A (en) * | 2016-05-24 | 2019-06-20 | ゼネラル・エレクトリック・カンパニイ | System and method for forming laminate material |
| US10780614B2 (en) | 2016-05-24 | 2020-09-22 | General Electric Company | System and method for forming stacked materials |
| US11691356B2 (en) | 2021-02-08 | 2023-07-04 | General Electric Company | System and method for forming stacked materials |
| WO2022190669A1 (en) * | 2021-03-09 | 2022-09-15 | 帝人株式会社 | Method for producing molded body |
| JP2023042641A (en) * | 2021-09-15 | 2023-03-28 | トヨタ自動車株式会社 | Method for manufacturing joint component containing fiber reinforced resin |
| JP7655165B2 (en) | 2021-09-15 | 2025-04-02 | トヨタ自動車株式会社 | Method for manufacturing a joined part including fiber-reinforced resin |
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