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JP2005324340A - Fiber-reinforced plastic and method for producing the same - Google Patents

Fiber-reinforced plastic and method for producing the same Download PDF

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JP2005324340A
JP2005324340A JP2004142108A JP2004142108A JP2005324340A JP 2005324340 A JP2005324340 A JP 2005324340A JP 2004142108 A JP2004142108 A JP 2004142108A JP 2004142108 A JP2004142108 A JP 2004142108A JP 2005324340 A JP2005324340 A JP 2005324340A
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fiber reinforced
reinforced resin
discontinuous
resin sheet
sheet
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JP5153052B2 (en
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Masatoshi Kobayashi
正俊 小林
Daiki Moriizumi
大樹 森泉
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/302—Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination
    • 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
    • B29C70/081—Combinations of fibres of continuous or substantial length and short fibres

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

Abstract

【課題】 強度が高く、かつ、所要部位における成形能が高い繊維強化プラスチックを提供する。
【解決手段】 強度を優先する部位に、連続繊維を補強材とする連続繊維強化樹脂シート２を配置し、成形能を優先する部位に、不連続繊維を補強材とする不連続繊維強化樹脂３を配置して、必要な強度を得ながら、必要な部位における成形を可能とする。
【選択図】 図１
PROBLEM TO BE SOLVED: To provide a fiber reinforced plastic having high strength and high molding ability at a required part.
SOLUTION: A continuous fiber reinforced resin sheet 2 using continuous fibers as a reinforcing material is disposed at a site giving priority to strength, and a discontinuous fiber reinforced resin 3 using a discontinuous fiber as a reinforcing material at a site giving priority to molding ability. To obtain the required strength while enabling molding at the required site.
[Selection] Figure 1

Description

本発明は、繊維強化プラスチックに関し、特に、繊維強化樹脂シートを積層させた繊維強化プラスチックおよび、その製造方法に関する。   The present invention relates to a fiber reinforced plastic, and more particularly, to a fiber reinforced plastic in which a fiber reinforced resin sheet is laminated and a manufacturing method thereof.

繊維強化プラスチックは、エポキシやポリカーボネートなどをマトリックス（母材）として、炭素繊維、ガラス繊維などの各種繊維で強化した材料である。この繊維強化プラスチックは、比強度、比剛性が高いため、軽量かつ高強度が要求される自動車部品、航空機部品、電気機器部品などに幅広く使用されている。   The fiber reinforced plastic is a material reinforced with various fibers such as carbon fiber and glass fiber using epoxy or polycarbonate as a matrix (base material). Since this fiber reinforced plastic has high specific strength and specific rigidity, it is widely used for automobile parts, aircraft parts, electrical equipment parts and the like that are required to be lightweight and have high strength.

繊維強化プラスチックの製造方法としては、例えば、ガラスクロスなどの補強材に熱硬化性樹脂を均等に含浸させ、乾燥させたプリプレグ（繊維強化樹脂シート）を製作し、これを複数積層した後に、加圧加熱して所要の形状に一体化する積層成形法や、内部に強化繊維材を配置した型に液状の熱硬化性樹脂を注入し、加熱硬化させるＲＴＭ（レジン・トランスファー・モールディング）法が知られている。   As a method for producing fiber reinforced plastic, for example, a reinforcing material such as glass cloth is uniformly impregnated with a thermosetting resin, and a dried prepreg (fiber reinforced resin sheet) is manufactured. There are known the laminated molding method that integrates to the required shape by pressure heating, and the RTM (resin transfer molding) method that injects a liquid thermosetting resin into a mold with a reinforcing fiber material inside and heat cures it. It has been.

このような繊維強化プラスチックでは、補強材として連続繊維を用いた場合、連続繊維の長手方向での強度、靱性が高いため、より高強度、軽量化が要求される部材に用いられる。その一方、連続繊維の長手方向と直交する方向では、強度、靱性が低く、機械的特性に異方性を有すると言える。このような異方性を緩和するために、例えば、連続繊維を補強材とする連続繊維強化樹脂シートの間に、一方向に配向された短繊維を補強材とする短繊維強化樹脂シートを介在させたものが知られている（例えば、特許文献１参照。）。
特公平３−６５７７１号公報 In such a fiber reinforced plastic, when continuous fibers are used as a reinforcing material, the strength and toughness in the longitudinal direction of the continuous fibers are high, so that they are used for members that require higher strength and light weight. On the other hand, in the direction orthogonal to the longitudinal direction of the continuous fiber, it can be said that the strength and toughness are low and the mechanical properties are anisotropic. In order to alleviate such anisotropy, for example, a short fiber reinforced resin sheet with a short fiber oriented in one direction as a reinforcing material is interposed between continuous fiber reinforced resin sheets with a continuous fiber as a reinforcing material. What was made to do is known (for example, refer patent document 1).
Japanese Examined Patent Publication No. 3-65771

ところで、繊維強化プラスチックを自動車部品（ボンネット、ルーフ等）などの素材として用い、所望の形状に成形（塑性変形）しようとする場合、連続繊維を補強材とする繊維強化プラスチックでは、成形能が繊維の配向に依存するため、複雑な変形をさせることができない。このため、複雑形状の部位（成形能を優先する部位）には、繊維強化プラスチック（シート材）を所定の大きさ、形状に切断し、これを変形可能な範囲で所定形状に成形し、これらをいくつか配置して全体として所定の（複雑）形状にする、という方法をとらなければならない。このため、成形の稼働費がかさむのみならず、材料の連続性が失われていた。   By the way, when fiber reinforced plastics are used as materials for automobile parts (bonnets, roofs, etc.) and are intended to be molded (plastically deformed) into a desired shape, fiber reinforced plastics with continuous fibers as a reinforcing material have a molding ability of fibers. Since it depends on the orientation of the film, it cannot be complicatedly deformed. For this reason, fiber reinforced plastic (sheet material) is cut into a predetermined size and shape in a complicated shape part (a part giving priority to molding ability), and this is molded into a predetermined shape within a deformable range. It is necessary to take a method in which several are arranged to form a predetermined (complex) shape as a whole. For this reason, not only was the operating cost of the molding increased, but the continuity of the material was lost.

そこで本発明は、強度が高く、かつ、所要部位における成形能が高い繊維強化プラスチックを提供することを目的とする。   Accordingly, an object of the present invention is to provide a fiber reinforced plastic having high strength and high molding ability at a required portion.

上記目的を達成するために請求項１に記載の発明は、繊維状の補強材に樹脂を含浸させた繊維強化樹脂シートを複数積層した繊維強化プラスチックであって、強度を優先する部位に、連続繊維を補強材とする連続繊維強化樹脂シートを配置し、成形能を優先する部位に、不連続繊維を補強材とする不連続繊維強化樹脂を配置したことを特徴としている。
（作用）
強度を優先する部位には、強度が高い連続繊維強化樹脂シートが配置されているため、所望の強度が得られる。また、成形能を優先する部位には、変形しやすい不連続繊維強化樹脂が配置されているため、製品の設計（所望）形状が複雑な場合であっても、この形状に合わせて成形することができる。 In order to achieve the above object, the invention described in claim 1 is a fiber reinforced plastic obtained by laminating a plurality of fiber reinforced resin sheets obtained by impregnating a fibrous reinforcing material with a resin, and is continuously provided at a site where strength is given priority. the continuous fiber-reinforced resin sheet that the fibrous reinforcing material is placed, the site priority molding ability, is characterized in that a discontinuous fiber reinforced resin which discontinuous fiber and the reinforcing member.
(Function)
Since a continuous fiber reinforced resin sheet having a high strength is disposed at a site where strength is prioritized, a desired strength can be obtained. In addition, because discontinuous fiber reinforced resin that is easy to deform is placed in the site where priority is given to moldability, even if the design (desired) shape of the product is complicated, it can be molded according to this shape Can do.

また、請求項２に記載の発明は、積層された連続繊維強化樹脂シートの少なくとも１シートを他のシートよりも短くして、積層断面端部に凹部を設け、不連続繊維強化樹脂を積層断面端部に配置するとともに、凹部に不連続繊維強化樹脂を配置させたことを特徴としている。
（作用）
積層断面端部の凹部に不連続繊維強化樹脂が配置されるため、連続繊維強化樹脂シートと不連続繊維強化樹脂との密着性が向上する。
また、請求項３に記載の発明は、積層された連続繊維強化樹脂シートに、不連続繊維を補強材とする不連続繊維強化樹脂を介在させたことを特徴としている。
（作用）
連続繊維強化樹脂シート層に、機械的特性が等方である不連続繊維強化樹脂が介在されているため、繊維強化プラスチックの機械的特性の異方性が緩和される。 In the invention according to claim 2, at least one of the laminated continuous fiber reinforced resin sheets is made shorter than the other sheets, a recess is provided at the end of the laminated cross section, and the discontinuous fiber reinforced resin is laminated in the laminated cross section. While disposing at the end, discontinuous fiber reinforced resin is disposed in the recess.
(Function)
Since discontinuous fiber reinforced resin is arrange | positioned at the recessed part of a lamination | stacking cross section edge part, the adhesiveness of a continuous fiber reinforced resin sheet and discontinuous fiber reinforced resin improves.
The invention according to claim 3, the laminated continuous fiber-reinforced resin sheet is characterized in that by interposing a discontinuous fiber reinforced resin which discontinuous fiber and the reinforcing member.
(Function)
Since the discontinuous fiber reinforced resin having isotropic mechanical properties is interposed in the continuous fiber reinforced resin sheet layer, the anisotropy of the mechanical properties of the fiber reinforced plastic is alleviated.

請求項１に記載の発明によれば、繊維強化プラスチックの強度を高くしつつ、所望の部位における成形能を高めることができる。このため、従来のように、繊維強化プラスチックを所定の大きさ、形状に切断、成形し、これら配置するという多工程が必要なくなり、稼働費が軽減される。また、従来、複雑形状で高強度を要する部材（製品）に対しては金属材料を用いていたのを、本繊維強化プラスチックに置き換えることができ、軽量化が図れる。
請求項２に記載の発明によれば、連続繊維強化樹脂シートと不連続繊維強化樹脂との密着性が向上し、成形（変形）が大きい場合でも、連続繊維強化樹脂シートと不連続繊維強化樹脂との剥離を抑制することができる。
請求項３に記載の発明によれば、機械的特性の異方性が緩和されるため、複数の方向に対する強度が必要な部材に対しても、この繊維強化プラスチックを用いることができる。 According to the first aspect of the present invention, it is possible to increase the molding ability at a desired site while increasing the strength of the fiber-reinforced plastic. This eliminates the need for multiple steps of cutting, forming, and arranging the fiber-reinforced plastic into a predetermined size and shape as in the prior art, thereby reducing operating costs. Conventionally, a metal material for a member (product) that has a complicated shape and requires high strength can be replaced with the present fiber reinforced plastic, and the weight can be reduced.
According to the invention described in claim 2, even when the adhesion between the continuous fiber reinforced resin sheet and the discontinuous fiber reinforced resin is improved and the molding (deformation) is large, the continuous fiber reinforced resin sheet and the discontinuous fiber reinforced resin are used. Peeling can be suppressed.
According to the invention described in claim 3, since the anisotropy of the mechanical properties is relaxed, this fiber reinforced plastic can be used even for members that require strength in a plurality of directions.

以下、本発明を図示の実施形態に基づいて説明する。
〈実施形態１〉
図１は、本実施形態に係わる繊維強化プラスチック１の製造工程を示す工程概略図である。この製造工程は、連続繊維強化樹脂シート２と不連続繊維強化樹脂シート３とを配置、積層する配置工程（図１（ａ））と、金型８のキャビティー８ｃ内で連続繊維強化樹脂シート２と不連続繊維強化樹脂シート３とを加圧し、成型するプリフォーム工程（図１（ｂ））と、最終形状を有するキャビティー９ａ内で連続繊維強化樹脂シート２と不連続繊維強化樹脂シート３とを成型し、硬化または固化させる定形化工程（図１（ｃ））とから構成される。
本実施形態では、図２に示すように、連続繊維強化樹脂シート２は略正方形で、一方向に連続繊維を配向させ、これに樹脂を含浸させて加圧したものである。また、不連続繊維強化樹脂シート３は長方形で、ランダムに不連続繊維を配向させ、これに樹脂を含浸させて加圧したものである。これら連続繊維および不連続繊維としては、炭素繊維、ガラス繊維、アルミナ繊維などが挙げられるが、これに限らず、いかなる繊維であってもよい。また、樹脂（マトリックス）としては、ナイロン６／６、ポリカーボネートなどの熱可塑性樹脂、あるいは、ポリエステル、エポキシなどの熱硬化性樹脂のいずれであってもよい。
まず、配置工程において、図２に示すように、連続繊維強化樹脂シート２を中央部に配置し、その４辺に不連続繊維強化樹脂シート３を配置して、これらをローラなどで加圧する。これにより、連続繊維強化樹脂シート２と不連続繊維強化樹脂シート３とが一体化し、混合シート４が得られる。そして、この混合シート４を複数積層する。このとき、図１（ａ）に示すように、隣接する上下の連続繊維強化樹脂シート２の繊維方向が直交するように積層する。これにより、直交方向連続繊維として、直交する２方向での機械的特性などが等しくなるようになっている。なお、連続繊維強化樹脂シート２の繊維方向をすべて同一方向とする一方向連続繊維としてもよく、また、繊維方向を多数の角度に配置する（例えば、４５度毎）多方向連続繊維としてもよい。
このように本実施形態では、４つの不連続繊維強化樹脂シート３を連続繊維強化樹脂シート２の４辺にそれぞれ配置させているが、図３に示すように、環状の不連続繊維強化樹脂シート５を製作し、この環内に連続繊維強化樹脂シート２を配置させて、混合シート４としてもよい。 Hereinafter, the present invention will be described based on the illustrated embodiments.
<Embodiment 1>
FIG. 1 is a process schematic diagram showing the manufacturing process of the fiber reinforced plastic 1 according to the present embodiment. In this manufacturing process, the continuous fiber reinforced resin sheet 2 and the discontinuous fiber reinforced resin sheet 3 are disposed and laminated (FIG. 1A), and the continuous fiber reinforced resin sheet is formed in the cavity 8c of the mold 8. 2 and the discontinuous fiber reinforced resin sheet 3 are pressed and molded (FIG. 1B), and the continuous fiber reinforced resin sheet 2 and the discontinuous fiber reinforced resin sheet are formed in the cavity 9a having the final shape. 3 and a stiffening step (FIG. 1 (c)) for curing or solidifying.
In this embodiment, as shown in FIG. 2, the continuous fiber reinforced resin sheet 2 is substantially square, in which continuous fibers are oriented in one direction, impregnated with resin, and pressed. The discontinuous fiber reinforced resin sheet 3 is rectangular, and is formed by orienting discontinuous fibers at random, impregnating the resin with this, and pressurizing the discontinuous fibers. Examples of these continuous fibers and discontinuous fibers include carbon fibers, glass fibers, and alumina fibers, but are not limited thereto, and any fibers may be used. The resin (matrix) may be any of thermoplastic resins such as nylon 6/6 and polycarbonate, or thermosetting resins such as polyester and epoxy.
First, in the arranging step, as shown in FIG. 2, the continuous fiber reinforced resin sheet 2 is arranged at the center, the discontinuous fiber reinforced resin sheet 3 is arranged on the four sides thereof, and these are pressed with a roller or the like. Thereby, the continuous fiber reinforced resin sheet 2 and the discontinuous fiber reinforced resin sheet 3 are integrated, and the mixed sheet 4 is obtained. A plurality of the mixed sheets 4 are laminated. At this time, as shown to Fig.1 (a), it laminate | stacks so that the fiber direction of the adjacent upper and lower continuous fiber reinforced resin sheet 2 may orthogonally cross. As a result, the mechanical characteristics in the two orthogonal directions are equal as the orthogonal continuous fibers. In addition, it is good also as a unidirectional continuous fiber which makes all the fiber directions of the continuous fiber reinforced resin sheet 2 the same direction, and it is good also as a multi-directional continuous fiber which arrange | positions a fiber direction in many angles (for example, every 45 degree | times). .
As described above, in this embodiment, the four discontinuous fiber reinforced resin sheets 3 are arranged on the four sides of the continuous fiber reinforced resin sheet 2, respectively, but as shown in FIG. 5 may be manufactured, and the continuous fiber reinforced resin sheet 2 may be disposed in the ring to form the mixed sheet 4.

また、本実施形態では、混合シート４を積層させているが、連続繊維強化樹脂シート２のみを積層し、この積層した連続繊維強化樹脂シート２の四方に、不連続繊維強化樹脂を配置してもよい。すなわち、図４に示すように、積層した連続繊維強化樹脂シート２の四方に、ブロック状の不連続繊維強化樹脂体６を配置させたり、あるいは、図５に示すように、環状の不連続繊維強化樹脂体７の環内に、積層した連続繊維強化樹脂シート２を配置させてもよい。   Moreover, in this embodiment, although the mixed sheet 4 is laminated | stacked, only the continuous fiber reinforced resin sheet 2 is laminated | stacked, discontinuous fiber reinforced resin is arrange | positioned in the four sides of this laminated | stacked continuous fiber reinforced resin sheet 2. Also good. That is, as shown in FIG. 4, block-like discontinuous fiber reinforced resin bodies 6 are arranged on all sides of the laminated continuous fiber reinforced resin sheet 2, or as shown in FIG. 5, annular discontinuous fibers The laminated continuous fiber reinforced resin sheet 2 may be disposed in the ring of the reinforced resin body 7.

なお、図１５は、混合シート４の積層状態（図１（ａ））をより解りやすくするために、積層状態を拡大した模式図（イメージ図）であり、この図１５で図示す連続繊維、不連続繊維、およびシート境は、他の図においても適用される。   FIG. 15 is a schematic diagram (image diagram) in which the lamination state is enlarged in order to make the lamination state (FIG. 1 (a)) of the mixed sheet 4 easier to understand. Continuous fiber and sheet borders are also applied in other figures.

次に、プリフォーム工程の準備として、図１（ｂ）に示すように、積層した混合シート４を、金型８のキャビティー（成型部）８ｃ内に配置する。このキャビティー８ｃの平面形状は混合シート４よりも大きく、また、型締めした際のキャビティー８ｃの深さは、積層した混合シート４の高さよりも浅く設定されている。これにより、型締めした際に、混合シート４が圧縮されるとともに、混合シート４中の樹脂、不連続繊維が流動し、キャビティー８ｃ内に充填されるようになっている。
続いて、プリフォーム工程において、金型８の上型８ａと下型８ｂとを閉じ、混合シート４を加圧する。これにより混合シート４内の繊維および樹脂は、金型のキャビティー８ｃに沿って変形（流動）し、キャビティー８ｃの形状に成型される。この際、連続繊維（連続繊維強化樹脂シート２）の変形、流動は少なく、型締め方向に圧縮される。一方、不連続繊維（不連続繊維強化樹脂シート３）および樹脂は、水平方向（型締め方向と直交する方向）を含むあらゆる方法に変形、流動し、キャビティー８ｃ内に充填されていく。すなわち、樹脂に覆われた連続繊維の周囲を不連続繊維が囲むように、キャビティー８ｃの形状に沿って成型される。
なお、プリフォーム工程後または後述する定形化工程後において、連続繊維強化樹脂シート２および不連続繊維強化樹脂シート３は、すでに独立したシート状を呈していないが、説明の便宜上、適宜、連続繊維強化樹脂シート２および不連続繊維強化樹脂シート３として説明する。 Next, as a preparation for the preform process, as shown in FIG. 1B, the laminated mixed sheet 4 is placed in the cavity (molding portion) 8 c of the mold 8. The planar shape of the cavity 8c is larger than that of the mixed sheet 4, and the depth of the cavity 8c when the mold is clamped is set to be shallower than the height of the stacked mixed sheets 4. Thus, upon clamping, with mixed sheet 4 is compressed, the resin in the mixed sheet 4, discontinuous fibers to flow, and is filled into the cavity 8c.
Subsequently, in the preform process, the upper mold 8a and the lower mold 8b of the mold 8 are closed, and the mixed sheet 4 is pressurized. Thereby, the fibers and the resin in the mixed sheet 4 are deformed (flowed) along the cavity 8c of the mold, and are molded into the shape of the cavity 8c. At this time, the continuous fiber (continuous fiber reinforced resin sheet 2) is less deformed and flows, and is compressed in the mold clamping direction. On the other hand, the discontinuous fiber (discontinuous fiber reinforced resin sheet 3) and the resin are deformed and flow in any method including the horizontal direction (direction orthogonal to the clamping direction), and are filled in the cavity 8c. That is, it is molded along the shape of the cavity 8c so that the discontinuous fibers surround the continuous fibers covered with the resin.
Note that the continuous fiber reinforced resin sheet 2 and the discontinuous fiber reinforced resin sheet 3 are not already in the form of independent sheets after the preforming process or after the shaping process described later. It demonstrates as the reinforced resin sheet 2 and the discontinuous fiber reinforced resin sheet 3. FIG.

このプリフォーム工程における加圧力は、通常１ＭＰａ以下とするが、後述する定形化工程に悪影響（形状不良、硬化、固化不良など）を与えない範囲において、１ＭＰａ以上であってもよい。また、混合シート４（樹脂シート２，３）の温度（材料温度）および金型温度は、次のとおりとする。   The applied pressure in this preforming process is usually 1 MPa or less, but may be 1 MPa or more as long as it does not adversely affect the shaping process described later (shape failure, curing, solidification failure, etc.). The temperature (material temperature) and mold temperature of the mixed sheet 4 (resin sheets 2 and 3) are as follows.

混合シート４内の樹脂が熱硬化性樹脂の場合には、材料温度および金型温度を室温とする。ただし、後述する定形化工程に悪影響を与えない範囲において、樹脂が硬化する温度まで加熱してもよい。
また、混合シート４内の樹脂が結晶性熱可塑性樹脂の場合、初期（本工程開始前）の材料温度を融点以上とし（ヒータなどで加熱）、金型温度を融点以下とする。さらに、非結晶性熱可塑性樹脂の場合、初期の材料温度をガラス転移点以上とし、金型温度をガラス転移点以下とする。
次に、定形化工程の準備として、図１（ｃ）に示すように、プリフォーム工程で得られた被プリフォーム体（加圧成型された積層混合シート４）を最終金型９内に配置する。この最終金型９のキャビティー９ａの形状は、最終製品の形状になっている。 When the resin in the mixed sheet 4 is a thermosetting resin, the material temperature and the mold temperature are set to room temperature. However, you may heat to the temperature which resin hardens | cures in the range which does not have a bad influence on the shaping process mentioned later.
When the resin in the mixed sheet 4 is a crystalline thermoplastic resin, the initial material temperature (before starting this process) is set to the melting point or higher (heated by a heater or the like), and the mold temperature is set to the melting point or lower. Furthermore, in the case of an amorphous thermoplastic resin, the initial material temperature is set to the glass transition point or higher, and the mold temperature is set to the glass transition point or lower.
Next, as shown in FIG. 1 (c), the preform body (pressure-molded laminated mixed sheet 4) obtained in the preform process is placed in the final mold 9 as preparation for the shaping process. To do. The shape of the cavity 9a of the final mold 9 is the shape of the final product.

続いて、定形化工程において、最終金型９の加圧力を上昇させるとともに、温度調整を行って、キャビティー９ａ内で樹脂を硬化または固化させ、定形化する。すなわち、本実施形態では、加圧力を１〜１０ＭＰａに上昇させ、材料温度および金型温度を次のとおりとする。
混合シート４（樹脂シート２，３）内の樹脂が熱硬化性樹脂の場合には、初期（本工程開始前）の材料温度を室温とし、金型温度を樹脂の熱硬化反応が可能な温度とする。ただし、材料温度は、定形化に悪影響を与えない範囲において、樹脂が硬化する温度まで加熱してもよい。
また、混合シート４内の樹脂が結晶性熱可塑性樹脂の場合、初期の材料温度を融点以上とし、金型温度を融点以下とする。さらに、非結晶性熱可塑性樹脂の場合、初期の材料温度をガラス転移点以上とし、金型温度をガラス転移点以下とする。
この定形化工程によって、混合シート４内の連続繊維、不連続繊維および樹脂がキャビティー９ａの形状に成型されるとともに、この形状に固定化される。また、この工程によって、混合シート４同士（連続繊維強化樹脂シート２、２同士、不連続繊維強化樹脂シート３、３同士および、連続繊維強化樹脂シート２と不連続繊維強化樹脂シート３）が完全に圧着され、全体が一体化される。そして、金型９を開けて繊維強化プラスチック１を取り出す。
このようにして製造された繊維強化プラスチック１の平面形状は、図６（ａ）に示すように、中央部に連続繊維（連続繊維強化樹脂シート２）が配置され、この連続繊維を取り囲むように不連続繊維（不連続繊維強化樹脂シート３）が配置されたものとなる。また、繊維強化プラスチック１の断面形状は、図６（ｂ）に示すように、連続繊維の両端部に不連続繊維が配置され、連続繊維と不連続繊維とは混合されていない。
このような繊維強化プラスチック１を素材として用いて、例えば、中央部には強度が優先され、端部には成形能が優先される製品を製作する場合、中央部には強度が高い連続繊維（連続繊維強化樹脂シート２）が配置されているため、所望の強度が得られる。また、端部には成形（変形）しやすい不連続繊維（不連続繊維強化樹脂シート３）が配置されているため、製品の設計形状が複雑な場合であっても成形可能となる。従って、従来のように、複雑形状の部位に、繊維強化プラスチックを所定の大きさ、形状に切断、成形し、これらを配置するという多工程が必要ない。 Subsequently, in the standardization step, the pressure of the final mold 9 is increased and the temperature is adjusted, and the resin is cured or solidified in the cavity 9a to be standardized. That is, in this embodiment, the applied pressure is increased to 1 to 10 MPa, and the material temperature and the mold temperature are as follows.
When the resin in the mixed sheet 4 (resin sheets 2 and 3) is a thermosetting resin, the initial material temperature (before starting this process) is set to room temperature, and the mold temperature is a temperature at which the resin can be thermoset. And However, the material temperature may be heated to a temperature at which the resin cures within a range that does not adversely affect the shaping.
When the resin in the mixed sheet 4 is a crystalline thermoplastic resin, the initial material temperature is set to the melting point or higher and the mold temperature is set to the melting point or lower. Furthermore, in the case of an amorphous thermoplastic resin, the initial material temperature is set to the glass transition point or higher, and the mold temperature is set to the glass transition point or lower.
By this shaping step, the continuous fibers, discontinuous fibers, and resin in the mixed sheet 4 are molded into the shape of the cavity 9a and fixed to this shape. Also, by this step, mixed sheet 4 together (continuous fiber-reinforced resin sheets 2 and 2 together, discontinuous fiber reinforced resin sheet 3,3 to each other and the continuous fiber-reinforced resin sheet 2 and the discontinuous fiber-reinforced resin sheet 3) it is completely The whole is integrated. And the metal mold | die 9 is opened and the fiber reinforced plastic 1 is taken out.
As shown in FIG. 6A, the planar shape of the fiber reinforced plastic 1 manufactured in this way is such that a continuous fiber (continuous fiber reinforced resin sheet 2) is disposed at the center and surrounds the continuous fiber. Discontinuous fibers (discontinuous fiber reinforced resin sheet 3) are arranged. Further, as shown in FIG. 6B, the cross-sectional shape of the fiber reinforced plastic 1 is such that discontinuous fibers are arranged at both ends of the continuous fibers, and the continuous fibers and the discontinuous fibers are not mixed.
Using such a fiber-reinforced plastic 1 as a material, for example, the intensity has priority in the central portion, if the end portion to manufacture a product forming ability is prioritized, the central portion to the high strength continuous fiber ( Since the continuous fiber reinforced resin sheet 2) is disposed, a desired strength can be obtained. In addition, since discontinuous fibers (discontinuous fiber reinforced resin sheet 3) that are easy to be formed (deformed) are arranged at the end, it is possible to mold even when the design shape of the product is complicated. Therefore, unlike the prior art, there is no need for a multi-step process in which a fiber-reinforced plastic is cut into a predetermined size and shape, shaped, and placed in a complex shape.

ところで、本実施形態では、連続繊維強化樹脂シート２の四方に不連続繊維強化樹脂シート３を配置しているが、必ずしも四方に配置する必要はなく、成形能を優先する部位のみに不連続繊維強化樹脂シート３を配置するようにすればよい。   By the way, in this embodiment, although the discontinuous fiber reinforced resin sheet 3 is arrange | positioned at the four sides of the continuous fiber reinforced resin sheet 2, it is not necessarily arrange | positioned at four sides and a discontinuous fiber is only given to the site | part which gives priority to a moldability. The reinforced resin sheet 3 may be disposed.

また、繊維材および樹脂材が成型しやすい場合などには、プリフォーム工程は必ずしも要せず、配置工程の後に定形化工程を直接行ってもよい。   In addition, when the fiber material and the resin material are easy to mold, the preforming process is not necessarily required, and the shaping process may be performed directly after the arranging process.

さらに、積層された連続繊維強化樹脂シート２の間に発砲コアを挟み、断熱性、耐衝撃性に優れた繊維強化プラスチック１にすることもできる。
〈実施形態２〉
本実施形態における繊維強化プラスチック１１は、図７に示すように、積層された連続繊維強化樹脂シート２，１２の一部２が他のシート１２よりも短くされ、これによって積層断面端部に凹部１１ａが設けられている点で、上記の実施形態１と構成が異なる。
この繊維強化プラスチック１１の製造方法は、以下のとおりである。
まず、図８に示すように、実施形態１で説明したような方法により混合シート４を製作するとともに、この混合シート４と同じ表面積の連続繊維強化樹脂シート１２を製作する（混合シート４中の樹脂シート２は、樹脂シート１２よりも短い）。次に、混合シート４を少なくとも１枚、連続繊維強化樹脂シート１２で挟み、図９に示すように、これを金型８のキャビティー８ｃ内に配置する。これにより、積層断面端部（外周断面）に連続繊維強化樹脂シートの凹部１１ａが形成される。続いて、上記の実施形態１と同様にして、プリフォーム工程および定形化工程を行う。
このプリフォーム工程および定形化工程において、混合シート４中の不連続繊維強化樹脂３がキャビティー８ｃ内を流動し、連続繊維強化樹脂シート１２の外周端部（積層断面端部）とキャビティー８ｃとの隙間に充填される。この結果、図７（ｂ）に示すように、凹部１１ａに不連続繊維強化樹脂３ａが充填され、かつ、連続繊維強化樹脂シート１２の外周端部に不連続繊維強化樹脂３ｂが配置された状態となる。
このように、積層断面端部の凹部１１ａに不連続繊維強化樹脂３ａが充填されているため、連続繊維強化樹脂シート２，１２とその外周端部に位置する不連続繊維強化樹脂３ｂとの密着性が向上する。このため、この繊維強化プラスチック１１を素材とする製品の形状が複雑な（変形が大きい）場合でも、連続繊維強化樹脂シート２，１２と不連続繊維強化樹脂３との剥離が抑制される。 Furthermore, a fired core can be sandwiched between the laminated continuous fiber reinforced resin sheets 2 to make the fiber reinforced plastic 1 excellent in heat insulation and impact resistance.
<Embodiment 2>
Fiber reinforced plastic 11 in the present embodiment, as shown in FIG. 7, part 2 of the laminated continuous fiber-reinforced resin sheet 2, 12 is shorter than the other sheets 12, which by the recess in the laminated section end The configuration differs from the first embodiment in that 11a is provided.
The manufacturing method of this fiber reinforced plastic 11 is as follows.
First, as shown in FIG. 8, the mixed sheet 4 is manufactured by the method described in the first embodiment, and the continuous fiber reinforced resin sheet 12 having the same surface area as the mixed sheet 4 is manufactured (in the mixed sheet 4). The resin sheet 2 is shorter than the resin sheet 12). Next, at least one mixed sheet 4 is sandwiched between continuous fiber reinforced resin sheets 12, and this is placed in a cavity 8c of a mold 8 as shown in FIG. Thereby, the recessed part 11a of a continuous fiber reinforced resin sheet is formed in a lamination | stacking cross section edge part (periphery cross section). Subsequently, the preforming process and the shaping process are performed in the same manner as in the first embodiment.
In the preforming step and the shaping step, the discontinuous fiber reinforced resin 3 in the mixed sheet 4 flows in the cavity 8c, and the outer peripheral end (laminated cross-sectional end) of the continuous fiber reinforced resin sheet 12 and the cavity 8c. It is filled in the gap. As a result, as shown in FIG. 7B, the recess 11 a is filled with the discontinuous fiber reinforced resin 3 a and the discontinuous fiber reinforced resin 3 b is disposed at the outer peripheral end of the continuous fiber reinforced resin sheet 12. It becomes.
As described above, since the concave portion 11a at the end of the laminated cross section is filled with the discontinuous fiber reinforced resin 3a, the continuous fiber reinforced resin sheets 2 and 12 and the discontinuous fiber reinforced resin 3b located at the outer peripheral end thereof are closely attached. Improves. For this reason, even when the shape of the product made from the fiber reinforced plastic 11 is complicated (large deformation), the separation between the continuous fiber reinforced resin sheets 2 and 12 and the discontinuous fiber reinforced resin 3 is suppressed.

ところで、本実施形態では、繊維強化プラスチック１１の平面形状が略正方形で、外周端部が垂直であるが、これに限らず、あらゆる形状に適用できる。例えば、図１０（ａ）に示すように、金型のキャビティーＣの平面形状を二等辺角形とし、図１０（ｂ）に示すように、この二等辺角形の頂角部の断面形状（型閉じした際の断面形状）を２つの傾斜面による鋭角とする。また、連続繊維強化樹脂シート１３の平面形状をキャビティーＣと略相似とし、頂角部に切り欠き１３ａを設けとともに、図１０（ｂ）に示すように、この切り欠き１３ａの断層部に不連続繊維強化樹脂１４を挟む。そして、プリフォーム工程および定形化工程を行うと、図１１に示すように、キャビティーＣの頂角部に不連続繊維強化樹脂１４が充填され、その平面形状および断面形状が、ともに鋭角（二等辺角形）となる。   By the way, in this embodiment, although the planar shape of the fiber reinforced plastic 11 is a substantially square and an outer peripheral edge part is perpendicular | vertical, it is applicable not only to this but to all shapes. For example, as shown in FIG. 10 (a), the planar shape of the cavity C of the mold is an isosceles square, and as shown in FIG. 10 (b), the cross-sectional shape (mold) of the apex portion of the isosceles The cross-sectional shape when closed is defined as an acute angle by two inclined surfaces. Further, the planar shape of the continuous fiber reinforced resin sheet 13 is substantially similar to that of the cavity C, and a notch 13a is provided at the apex corner, and the notch 13a is not formed in the notch 13a as shown in FIG. 10 (b). The continuous fiber reinforced resin 14 is sandwiched. Then, when the preforming step and the shaping step are performed, as shown in FIG. 11, the apex angle portion of the cavity C is filled with the discontinuous fiber reinforced resin 14, and the planar shape and the cross-sectional shape are both acute angles (two Isosceles).

このように、金型のキャビティー形状、連続繊維強化樹脂シートの形状および不連続繊維強化樹脂の配置を調整することで、所望の形状を有し、かつ、所望の部位に不連続繊維強化樹脂を配置させた繊維強化プラスチックを製造することができる。
〈実施形態３〉
本実施形態における繊維強化プラスチック２１は、図１２に示すように、積層された連続繊維強化樹脂シート２２に不連続繊維強化樹脂シート２３が介在している点で、上記の実施形態１と構成が異なる。
この繊維強化プラスチック２１の製造方法は、以下のとおりである。
図１３に示すように、少なくとも１枚の不連続繊維強化樹脂シート２３を連続繊維強化樹脂シート２２で挟み、これを金型８のキャビティー８ｃ内に配置する。続いて、上記の実施形態１と同様にして、プリフォーム工程および定形化工程を行う。
このプリフォーム工程および定形化工程において、不連続繊維強化樹脂シート２３が連続繊維強化樹脂シート２２から押し出され、キャビティー８ｃ内を流動し、連続繊維強化樹脂シート２２の外周端部（積層断面端部）とキャビティー８ｃとの隙間に充填される。この結果、図１２（ｂ）に示すように、不連続繊維強化樹脂シート２３の一部２３ａが連続繊維強化樹脂シート２２に挟まれ、かつ、連続繊維強化樹脂シート２２の外周端部（四方）に不連続繊維強化樹脂２３ｂが配置された状態となる。
このように、連続繊維強化樹脂シート２２層に、機械的特性が等方である不連続繊維強化樹脂２３ａが介在されているため、繊維強化プラスチック２１の機械的特性の異方性が緩和される。このため、複数の方向に対する強度が必要な部材に対しても、この繊維強化プラスチック２１を用いることができる。また、上記の実施形態１，２のように混合シート４などを製作する必要がなく、連続繊維強化樹脂シート２２で不連続繊維強化樹脂シート２３を挟むだけなので、製造工数が低減される。 Thus, by adjusting the cavity shape of the mold, the shape of the continuous fiber reinforced resin sheet, and the arrangement of the discontinuous fiber reinforced resin, the discontinuous fiber reinforced resin has a desired shape and is located at a desired site. Can be manufactured.
<Embodiment 3>
As shown in FIG. 12, the fiber reinforced plastic 21 in the present embodiment has the same configuration as that of the first embodiment in that the discontinuous fiber reinforced resin sheet 23 is interposed in the laminated continuous fiber reinforced resin sheet 22. Different.
The manufacturing method of this fiber reinforced plastic 21 is as follows.
As shown in FIG. 13, at least one discontinuous fiber reinforced resin sheet 23 is sandwiched between continuous fiber reinforced resin sheets 22, and this is placed in the cavity 8 c of the mold 8. Subsequently, the preforming process and the shaping process are performed in the same manner as in the first embodiment.
In the preforming step and the shaping step, the discontinuous fiber reinforced resin sheet 23 is extruded from the continuous fiber reinforced resin sheet 22, flows in the cavity 8c, and the outer peripheral end portion (lamination cross-sectional end of the continuous fiber reinforced resin sheet 22). Part) and the cavity 8c. As a result, as shown in FIG. 12 (b), a part 23 a of the discontinuous fiber reinforced resin sheet 23 is sandwiched between the continuous fiber reinforced resin sheets 22, and the outer peripheral end (four sides) of the continuous fiber reinforced resin sheet 22. In this state, the discontinuous fiber reinforced resin 23b is disposed.
As described above, since the discontinuous fiber reinforced resin 23a having isotropic mechanical properties is interposed in the continuous fiber reinforced resin sheet 22 layer, the anisotropy of the mechanical properties of the fiber reinforced plastic 21 is reduced. . For this reason, this fiber reinforced plastic 21 can be used also for members that require strength in a plurality of directions. Further, it is not necessary to manufacture the mixed sheet 4 or the like as in the first and second embodiments, and the discontinuous fiber reinforced resin sheet 23 is simply sandwiched between the continuous fiber reinforced resin sheets 22, so that the number of manufacturing steps is reduced.

なお、本実施形態では、不連続繊維強化樹脂シート２３を連続繊維強化樹脂シート２２層に介在させているが、ブロック状の不連続繊維強化樹脂体を連続繊維強化樹脂シート２２層に介在させてもよい。
〈実施形態４〉
本実施形態における繊維強化プラスチック３１は、図１４（ｂ）に示すように、積層された連続繊維強化樹脂シート３２の上面端縁部に、不連続繊維強化樹脂３３が配置されている。
この繊維強化プラスチック３１の製造方法は、以下のとおりである。 In this embodiment, the discontinuous fiber reinforced resin sheet 23 is interposed in the continuous fiber reinforced resin sheet 22 layer, but a block-like discontinuous fiber reinforced resin body is interposed in the continuous fiber reinforced resin sheet 22 layer. Also good.
<Embodiment 4>
In the fiber reinforced plastic 31 in the present embodiment, as shown in FIG. 14B, the discontinuous fiber reinforced resin 33 is disposed at the upper edge portion of the laminated continuous fiber reinforced resin sheet 32.
The manufacturing method of this fiber reinforced plastic 31 is as follows.

すなわち、図１４（ａ）に示すように、連続繊維強化樹脂シート３２を積層し、この積層した連続繊維強化樹脂シート３２の上面で、成形能が優先される端縁部に、不連続繊維強化樹脂３３を載置する。不連続繊維強化樹脂３３は、シート状のものを積層したものでもよく、またブロック状の樹脂体でもよい。また、載置する部位は、全端縁部（全周）でもよく、一部の端縁部でもよい。
これを金型のキャビティー内に配置して、上記の実施形態１と同様にして、プリフォーム工程および定形化工程を実施する。この際、金型３４の上型（図１４（ｂ）では、定形化工程での金型を示す）には、不連続繊維強化樹脂３３が配置された位置に相応する部位に、丸みを帯びた凹部３４ａが形成されており、この凹部３４ａによって、不連続繊維強化樹脂３３が丸みを帯びた凸状に形成されるようになっている。 That is, as shown in FIG. 14 (a), by laminating a continuous fiber-reinforced resin sheet 32, the upper surface of the continuous fiber-reinforced resin sheet 32 which is the laminated, the edge portions forming ability is prioritized, reinforcing discontinuous fibers Resin 33 is placed. The discontinuous fiber reinforced resin 33 may be a laminate of sheet-like materials or a block-like resin body. Further, the part to be placed may be the entire edge (entire circumference) or a part of the edge.
This is placed in the cavity of the mold, and the preforming process and the shaping process are performed in the same manner as in the first embodiment. At this time, the upper die of the die 34 (FIG. 14B shows the die in the shaping step) is rounded at a portion corresponding to the position where the discontinuous fiber reinforced resin 33 is arranged. A concave portion 34a is formed, and the discontinuous fiber reinforced resin 33 is formed in a rounded convex shape by the concave portion 34a.

ところで、例えば、自動車のボンネットの端部は、人が手で触れても滑らかな触感が得られるように、または、隣接する他のパネル部品との建て付け性を向上させるなどのために、丸みを帯びた形状に形成されている。そして、従来このような形状に形成する場合、連続繊維強化樹脂シートは成形能が低いため、完全に折り曲げることができず、定形化工程後に別工程等で、人手によって丸みを付けたい端部に樹脂を載置して丸みをつけていた。   By the way, for example, the end of the hood of an automobile is rounded so that a smooth tactile sensation can be obtained even if it is touched by a human hand, or to improve the installation property with other adjacent panel parts. It is formed in a tinged shape. And when forming into such a shape conventionally, since the continuous fiber reinforced resin sheet has low molding ability, it cannot be bent completely, and at the end part where it is desired to be manually rounded in a separate process after the shaping process. The resin was placed and rounded.

これに対し本実施形態では、上記のように、所望の端部に不連続繊維強化樹脂３３を配置し、プリフォーム工程および定形化工程を経ることで、端部に丸みを帯びた凸部を有する繊維強化プラスチック３１を成形することがきで、従来のように、別工程で凸部を設ける必要がない。   On the other hand, in the present embodiment, as described above, discontinuous fiber reinforced resin 33 is disposed at a desired end portion, and a rounded convex portion is formed at the end portion through the preforming step and the shaping step. It is possible to form the fiber reinforced plastic 31 that is included, and there is no need to provide a convex portion in a separate process as in the prior art.

実施形態１に係わる繊維強化プラスチックの製造工程を示す概略断面図であり、（ａ）は配置工程で混合シートを複数積層した状態を示し、（ｂ）はプリフォーム工程でキャビティー内に積層混合シートを配置した状態を示し、（ｃ）は定形化工程で積層混合シートを加圧している状態を示す。It is a schematic sectional drawing which shows the manufacturing process of the fiber reinforced plastic concerning Embodiment 1, (a) shows the state which laminated | stacked multiple mixing sheets at the arrangement | positioning process, (b) laminated and mixed in the cavity at the preform process. The state which has arrange | positioned the sheet | seat is shown, (c) shows the state which is pressing the lamination | stacking mixing sheet | seat at the shaping process. 実施形態１における第１の混合シートの製作方法を示す斜視図。FIG. 3 is a perspective view showing a method for producing a first mixed sheet in the first embodiment. 実施形態１における第２の混合シートの製作方法を示す斜視図。FIG. 5 is a perspective view showing a method for producing a second mixed sheet in the first embodiment. 実施形態１における第１の不連続繊維強化樹脂体の配置方法を示す斜視図。The perspective view which shows the arrangement | positioning method of the 1st discontinuous fiber reinforced resin body in Embodiment 1. FIG. 実施形態１における第２の不連続繊維強化樹脂体の配置方法を示す斜視図。The perspective view which shows the arrangement | positioning method of the 2nd discontinuous fiber reinforced resin body in Embodiment 1. FIG. 実施形態１に係わる繊維強化プラスチックの平面図（ａ）とＡ−Ａ断面図（ｂ）。The top view (a) and AA sectional drawing (b) of the fiber reinforced plastic concerning Embodiment 1. FIG. 実施形態２に係わる繊維強化プラスチックの平面図（ａ）とＡ−Ａ断面図（ｂ）。The top view (a) and AA sectional drawing (b) of the fiber reinforced plastic concerning Embodiment 2. FIG. 実施形態２における連続繊維強化樹脂シートと混合シートとの積層方法を示す斜視図。The perspective view which shows the lamination | stacking method of the continuous fiber reinforced resin sheet and mixed sheet in Embodiment 2. FIG. 実施形態２において、キャビティー内に連続繊維強化樹脂シートと混合シートとを配置した状態を示す断面図。Sectional drawing which shows the state which has arrange | positioned the continuous fiber reinforced resin sheet and the mixing sheet in the cavity in Embodiment 2. FIG. 実施形態２において、第２の形状を形成するためのキャビティーおよび連続繊維強化樹脂シートの平面図（ａ）とＡ−Ａ断面図（ｂ）。In Embodiment 2, the top view (a) and AA sectional drawing (b) of the cavity for forming a 2nd shape, and a continuous fiber reinforced resin sheet. 実施形態２において、第２の形状を有する繊維強化プラスチックの平面図（ａ）とＡ−Ａ断面図（ｂ）。In Embodiment 2, the top view (a) and AA sectional drawing (b) of the fiber reinforced plastic which has a 2nd shape. 実施形態３に係わる繊維強化プラスチックの平面図（ａ）とＡ−Ａ断面図（ｂ）。The top view (a) and AA sectional drawing (b) of the fiber reinforced plastic concerning Embodiment 3. FIG. 実施形態３において、キャビティー内に連続繊維強化樹脂シートと不連続繊維強化樹脂シートとを配置した状態を示す断面図。In Embodiment 3, sectional drawing which shows the state which has arrange | positioned the continuous fiber reinforced resin sheet and the discontinuous fiber reinforced resin sheet in the cavity. 実施形態４に係わる繊維強化プラスチックの製造工程を示す概略断面図であり、（ａ）は積層した連続繊維強化樹脂シートの上面端縁部に不連続繊維強化樹脂を載置した状態を示し、（ｂ）は定形化工程終了後に金型を開いた状態を示す。It is a schematic sectional drawing which shows the manufacturing process of the fiber reinforced plastic concerning Embodiment 4, (a) shows the state which mounted the discontinuous fiber reinforced resin in the upper surface edge part of the laminated | stacked continuous fiber reinforced resin sheet, b) shows a state in which the mold is opened after completion of the shaping step. 実施形態１において、混合シート４を積層した状態を示す模式断面図。In Embodiment 1, the schematic cross section which shows the state which laminated | stacked the mixing sheet 4. As shown in FIG.

符号の説明Explanation of symbols

１ 繊維強化プラスチック
２ 連続繊維強化樹脂シート
３ 不連続繊維強化樹脂シート
４ 混合シート
８ 金型
８ｃ キャビティー
９ 最終金型
９ａ キャビティー

DESCRIPTION OF SYMBOLS 1 Fiber reinforced plastic 2 Continuous fiber reinforced resin sheet 3 Discontinuous fiber reinforced resin sheet 4 Mixed sheet 8 Mold 8c Cavity 9 Final mold 9a Cavity

Claims (6)

繊維状の補強材に樹脂を含浸させた繊維強化樹脂シートを複数積層した繊維強化プラスチックであって、
強度を優先する部位に、連続繊維を補強材とする連続繊維強化樹脂シートを配置し、成形能を優先する部位に、不連続繊維を補強材とする不連続繊維強化樹脂を配置した、
ことを特徴とする繊維強化プラスチック。 A fiber reinforced plastic in which a plurality of fiber reinforced resin sheets impregnated with resin in a fibrous reinforcing material are laminated,
A continuous fiber reinforced resin sheet with a continuous fiber as a reinforcing material is arranged at a site giving priority to strength, and a discontinuous fiber reinforced resin with a discontinuous fiber as a reinforcing material is arranged at a site giving priority to molding ability.
Fiber reinforced plastic characterized by that. 積層された前記連続繊維強化樹脂シートの少なくとも１シートを他のシートよりも短くして、積層断面端部に凹部を設け、前記不連続繊維強化樹脂を前記積層断面端部に配置するとともに、前記凹部に前記不連続繊維強化樹脂を配置させた、
ことを特徴とする請求項１に記載の繊維強化プラスチック。 The laminated on at least 1 sheet of the continuous fiber-reinforced resin sheet was shorter than the other sheets, a concave portion is provided in the stacking section ends, with placing the discontinuous fiber-reinforced resin in the stacking section end, the The discontinuous fiber reinforced resin is disposed in the recess,
The fiber-reinforced plastic according to claim 1. 積層された前記連続繊維強化樹脂シートに、不連続繊維を補強材とする不連続繊維強化樹脂を介在させた、
ことを特徴とする請求項１または２に記載の繊維強化プラスチック。 In the laminated continuous fiber reinforced resin sheet, a discontinuous fiber reinforced resin having a discontinuous fiber as a reinforcing material is interposed,
The fiber-reinforced plastic according to claim 1 or 2. 積層された前記連続繊維強化樹脂シートの端縁部の少なくとも一部に、前記不連続繊維強化樹脂を配置させた、
ことを特徴とする請求項１に記載の繊維強化プラスチック。 The discontinuous fiber reinforced resin is disposed on at least a part of an edge portion of the laminated continuous fiber reinforced resin sheet,
The fiber-reinforced plastic according to claim 1. 連続繊維を補強材とする連続繊維強化樹脂シートを複数積層して一体化させる繊維強化プラスチックの製造方法であって、
前記連続繊維強化樹脂シートの一部に、不連続繊維を補強材とする不連続繊維強化樹脂を配置する配置工程と、
型のキャビティー内で前記連続繊維強化樹脂シートと前記不連続繊維強化樹脂とを加圧し、硬化または固化させて、前記キャビティーの形状に固定化する定形化工程とを有する、
ことを特徴とする繊維強化プラスチックの製造方法。 A method for producing a fiber reinforced plastic in which a plurality of continuous fiber reinforced resin sheets having a continuous fiber as a reinforcing material are laminated and integrated,
Arranging the discontinuous fiber reinforced resin with discontinuous fibers as a reinforcing material in a part of the continuous fiber reinforced resin sheet;
A step of pressurizing the continuous fiber reinforced resin sheet and the discontinuous fiber reinforced resin in a cavity of a mold, curing or solidifying, and fixing to the shape of the cavity;
A method for producing a fiber reinforced plastic characterized by the above. 前記配置工程と前記定形化工程との間に、前記連続繊維強化樹脂シートと前記不連続繊維強化樹脂とを加圧して前記キャビティーの形状に近い形状に成型するプリフォーム工程を設けた、
ことを特徴とする請求項５に記載の繊維強化プラスチックの製造方法。

Between the placement step and the stylization step, a preform step was provided in which the continuous fiber reinforced resin sheet and the discontinuous fiber reinforced resin were pressed to form a shape close to the shape of the cavity.
The method for producing a fiber-reinforced plastic according to claim 5.

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