JPH0516251A - Manufacture of fiber-reinforced plastic molded form - Google Patents
Manufacture of fiber-reinforced plastic molded formInfo
- Publication number
- JPH0516251A JPH0516251A JP3175341A JP17534191A JPH0516251A JP H0516251 A JPH0516251 A JP H0516251A JP 3175341 A JP3175341 A JP 3175341A JP 17534191 A JP17534191 A JP 17534191A JP H0516251 A JPH0516251 A JP H0516251A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- fiber
- resin composition
- defoaming
- resin
- 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
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は繊維強化プラスチック成
形品の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber reinforced plastic molded product.
【0002】[0002]
【従来の技術】ガラス繊維強化材と不飽和ポリエステル
樹脂を複合した繊維強化プラスチック(以下FRPと略
す)は住宅資材、舟艇、工業機材、電気部品、自動車部
品等広く使用されており、FRPは現代生活には不可欠
の材料になっている。FRP製品を生産するための成形
法は、ハンドレイアップ法、スプレイアップ法等の手作
業による方法とSMC法、FW法、連続法などの機械成
形法がある。2. Description of the Related Art Fiber reinforced plastics (hereinafter abbreviated as FRP), which is a composite of glass fiber reinforced material and unsaturated polyester resin, are widely used in housing materials, boats, industrial equipment, electric parts, automobile parts, etc. It has become an essential material for daily life. As a molding method for producing an FRP product, there are a manual method such as a hand lay-up method and a spray-up method, and a mechanical molding method such as an SMC method, a FW method and a continuous method.
【0003】[0003]
【発明が解決しようとする課題】ハンドレイアップ法で
は、型の面にガラス繊維とポリエステル樹脂を手作業で
積層し、ガラス繊維にポリエステル樹脂を含浸させ脱泡
した後、硬化させ、型より硬化物を抜き出し成形品を得
る。またスプレイアップ法では、スプレイアップ機を用
いてガラスロービングを切断しながらポリエステル樹脂
と共に型の面に吹き付け、更に脱泡ロールを用いて手作
業で脱泡した後硬化させ型より硬化物を抜き出し成形品
を得る。ハンドレイアップ法およびスプレイアップ法の
いずれの成形法においても、脱泡ロールを用いての脱泡
作業が必要である。この脱泡作業にはかなりの労力を必
要とし、またこの脱泡作業が十分でないと満足する成形
品が得られない。In the hand lay-up method, glass fiber and polyester resin are manually laminated on the surface of the mold, and the glass fiber is impregnated with the polyester resin, defoamed and then cured, and then cured from the mold. The product is extracted to obtain a molded product. In the spray-up method, the glass roving is cut using a spray-up machine and sprayed onto the surface of the mold together with the polyester resin, and then defoaming roll is used to manually defoam and cure, and the cured product is extracted from the mold. Get the goods. Both of the hand lay-up method and the spray-up method require defoaming work using a defoaming roll. This defoaming work requires considerable labor, and if this defoaming work is not sufficient, a satisfactory molded product cannot be obtained.
【0004】[0004]
【課題を解決するための手段】本発明は、ハンドレイア
ップ法、スプレイアップ法等における脱泡作業工程を省
力化しFRP成形品をハンドレイアップ法、スプレイア
ツプ法等で成形する際の脱泡作業をなくしたFRP成形
品の製造方法を提供するものである。DISCLOSURE OF THE INVENTION The present invention reduces the defoaming work process in the hand lay-up method, spray-up method and the like, and de-foams when molding an FRP molded product by the hand-lay-up method, spray-up method or the like. It is intended to provide a method for manufacturing an FRP molded product that eliminates the work.
【0005】本発明は、多数の小孔を有する型の一方の
側を減圧状態に保ち、該小孔から大気を吸引しつつ、型
の大気に接する面を繊維強化材で覆いながらまたは繊維
強化材を型に吸い付けた状態で、樹脂組成物を吹き付け
または散布し、繊維強化材に樹脂組成物を含浸させ硬化
させるFRP成形品の製造方法に関する。According to the present invention, one side of a mold having a large number of small holes is kept in a decompressed state, air is sucked from the small holes, and the surface of the mold in contact with the atmosphere is covered with a fiber reinforcing material or is fiber reinforced. The present invention relates to a method for producing an FRP molded product in which a resin composition is sprayed or sprayed in a state where the material is sucked into a mold to impregnate the resin composition into a fiber reinforced material and then cured.
【0006】本発明においては、多数の小孔を有する型
の一方の側を減圧状態に保ち、該小孔から大気を吸引し
つつ、型の大気に接する面を繊維強化材で覆いながらま
たは繊維強化材を型に吸い付けた状態で、樹脂組成物を
吹き付けまたは散布する。型の一方側は減圧状態にある
ため、吹き付けまたは散布された樹脂組成物は繊維強化
材に自動的に含浸脱泡され、その後硬化される。このよ
うに減圧状態を利用して繊維強化材に樹脂組成物を含浸
脱泡させるため、従来のハンドレイアップ法、スプレイ
アップ法等の際の、繊維強化材に樹脂組成物を含浸し、
脱泡ロールを用いて脱泡させる脱泡作業が省略できる。In the present invention, one side of a mold having a large number of small holes is kept in a depressurized state, air is sucked from the small holes, and the surface of the mold in contact with the atmosphere is covered with a fiber reinforcing material, or the fiber is The resin composition is sprayed or sprayed while the reinforcing material is sucked onto the mold. Since one side of the mold is in a reduced pressure state, the resin composition sprayed or sprinkled is automatically impregnated and defoamed into the fiber reinforcement, and then cured. As described above, in order to impregnate and defoam the resin composition into the fiber reinforcement by utilizing the reduced pressure state, the conventional hand lay-up method, the spray-up method, etc., the fiber reinforcement is impregnated with the resin composition,
The defoaming work of defoaming using a defoaming roll can be omitted.
【0007】以下、本発明を図面に従って更に詳しく説
明する。図1は本発明の一実施例図である。ここで1は
多数の小孔2を有する成形型、3は成形型1を減圧状態
に保つための減圧装置、7はスプレイガン、10は繊維
強化材の一種であるガラスロービング、12は樹脂液、
13は硬化剤を示す。6はガラスロービング10を50
mm程度のガラスチョップ11にカットするためのカッ
ターである。本発明において使用する成形型1は成形さ
れる所定の形状を有し、小孔2の開孔率は約50%程度
でパンチングメタル製またはFRP製が好適に使用でき
る。減圧装置3としては一般的な吸引ファンが使用でき
る。5は減圧状態を計測する圧力ゲージである。型面に
供給された繊維強化材や樹脂を吸い付け保持し、また樹
脂の含浸脱泡をするためには型の一方の面を100〜4
00mmHg程度の減圧状態に保つことが好ましい。1
00mHg未満では吸引、保持が十分でなく、また40
0mHgを超えると吸引され過ぎて、樹脂を供給時に小
孔を通じて樹脂が型の内部に入り込んでしまう場合があ
る。吸引する大気の量は型の表面積に比例するので適宜
最適な減圧状態を保持するために減圧調整用ダンパー4
を吸引ファンに設置している。The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention. Here, 1 is a mold having a large number of small holes 2, 3 is a depressurizing device for keeping the mold 1 in a depressurized state, 7 is a spray gun, 10 is glass roving which is a kind of fiber reinforcement, and 12 is a resin liquid. ,
Reference numeral 13 represents a curing agent. 6 is glass roving 10 50
It is a cutter for cutting into glass chops 11 of about mm. The molding die 1 used in the present invention has a predetermined shape to be molded, and the aperture ratio of the small holes 2 is about 50%, and punching metal or FRP can be preferably used. A general suction fan can be used as the decompression device 3. Reference numeral 5 is a pressure gauge for measuring the reduced pressure state. To absorb and hold the fiber reinforcement or resin supplied to the mold surface, and to impregnate and defoam the resin, one surface of the mold is 100 to 4
It is preferable to maintain a reduced pressure state of about 00 mmHg. 1
If it is less than 00 mHg, suction and retention are insufficient, and 40
If it exceeds 0 mHg, it may be sucked too much, and the resin may enter the inside of the mold through the small holes when the resin is supplied. Since the amount of atmospheric air to be sucked is proportional to the surface area of the mold, the pressure reducing damper 4 should be used in order to maintain an optimal pressure reduction state.
Is installed on the suction fan.
【0008】次に本発明に使用する材料について説明す
る。本発明に用いる繊維強化材としてはガラス繊維、カ
ーボン繊維、アラミド繊維などが用いられ、特に制限は
ない。また繊維強化材の状態はマット状、クロス状、連
続繊維状、ロービング状などいずれの状態でも使用可能
である。また本発明に使用する樹脂は不飽和ポリエステ
ル樹脂、エポキシ樹脂等の熱硬化性樹脂があげられる。
これらの樹脂には、促進剤、硬化剤、必要に応じて充填
剤、着色剤、揺変剤等を加えて使用される。本発明に使
用する樹脂組成物は、適当な粘度、揺変度および硬化性
を有する必要がある。樹脂組成物の粘度は10ポアズ以
下が望ましい。粘度が高すぎると繊維強化材への樹脂の
含浸が悪くなり、減圧力だけでは脱泡するのが困難にな
る。垂直面を有する成形品には、樹脂の垂直面からの垂
れ落ちを防止するために揺変度1〜5(25℃、BL
型、6/60rpm)を有する樹脂組成物を用いるのが
好ましい。硬化は常温硬化型、中温硬化型および高温硬
化型の何れの適用も可能である。ハンドレイアップ法、
スプレイアツプ法等と同様に常温硬化型の硬化剤を添加
して使用する常温硬化型が一般的である。Next, the materials used in the present invention will be described. As the fiber reinforcing material used in the present invention, glass fiber, carbon fiber, aramid fiber or the like is used, and there is no particular limitation. Further, the fiber reinforcing material can be used in any state such as mat, cloth, continuous fiber or roving. Examples of the resin used in the present invention include thermosetting resins such as unsaturated polyester resin and epoxy resin.
To these resins, an accelerator, a curing agent, and if necessary, a filler, a coloring agent, a thixotropic agent, etc. are used. The resin composition used in the present invention needs to have appropriate viscosity, thixotropy and curability. The viscosity of the resin composition is preferably 10 poise or less. If the viscosity is too high, the impregnation of the resin into the fiber reinforcement will be poor, and it will be difficult to degas only by the decompression force. A molded product having a vertical surface has a degree of fluctuation of 1 to 5 (25 ° C, BL to prevent dropping of the resin from the vertical surface).
It is preferable to use a resin composition having a mold, 6/60 rpm). As for curing, any of room temperature curing type, medium temperature curing type and high temperature curing type can be applied. Hand layup method,
As in the spray-up method and the like, a room temperature-curing type is generally used in which a room-temperature curing type curing agent is added and used.
【0010】次に繊維強化材と樹脂の型上面への供給方
法について図1に従い説明する。本発明においては、ま
ず減圧状態にある型1の上面に繊維強化材を供給する。
図1の例においては繊維強化材としてガラスロービング
を使用し型1の上方に設置されているカッター6により
ガラスロービング10を50mm程度のガラスチョップ
11にカットしながら型1の上面に供給する。50mm
程度にカットされたガラスチョツプ11は型1の内面が
減圧吸引状態になつているため型の上面に保持される。
ガラスロービングは適当の長さにカットしてもよく、ま
たカットせず連続的に供給してもよい。またロービング
の代わりにチョップドストランドマット、コンテニアス
マット、ガラスクロス、ロービングクロス等の形状のも
のを型の上面に供給してもよい。またこれらの材料を組
み合わせ使用することも可能である。次に樹脂組成物の
供給法について説明する。樹脂液12は硬化剤13と共
にスプレイガン7によって混合された樹脂組成物14と
してガラスチョップ11の上に供給される。図1におい
ては樹脂組成物をスプレイガンを使用して吹き付け供給
しているがハンドレイアップ法で使用するモヘヤロール
を用いて樹脂を供給してもよく、またこれらを組み合わ
せてもよい。本発明においては供給された樹脂組成物が
減圧状態の型内面に向かって繊維強化材に含浸脱泡され
ながら浸透するので、繊維強化材をまず型に供給し、次
に樹脂組成物を繊維強化材の上に供給するのを原則とす
るがこれを繰り返したり、また繊維強化材と樹脂組成物
を同時に供給するなどしてもよい。繊維強化材のガラス
ロービングをカットしながら供給し、更に樹脂組成物を
スプレイ供給するにはスプレイアップ法で使用されるス
プレイアップ機をそのまま利用できる。Next, a method of supplying the fiber reinforcement and the resin to the upper surface of the mold will be described with reference to FIG. In the present invention, first, the fiber reinforcement is supplied to the upper surface of the mold 1 in a reduced pressure state.
In the example of FIG. 1, glass roving is used as a fiber reinforcement, and the glass roving 10 is cut into glass chops 11 of about 50 mm by a cutter 6 installed above the mold 1 and supplied to the upper surface of the mold 1. 50 mm
The glass chop 11 cut to some extent is held on the upper surface of the mold because the inner surface of the mold 1 is in a vacuum suction state.
The glass roving may be cut to an appropriate length, or may be continuously supplied without being cut. Instead of roving, chopped strand mat, continuous mat, glass cloth, roving cloth, or the like may be supplied to the upper surface of the mold. It is also possible to use these materials in combination. Next, the method of supplying the resin composition will be described. The resin liquid 12 is supplied onto the glass chop 11 as the resin composition 14 mixed with the curing agent 13 by the spray gun 7. In FIG. 1, the resin composition is sprayed and supplied by using a spray gun, but the resin may be supplied by using a mohair roll used in the hand layup method, or these may be combined. In the present invention, since the supplied resin composition penetrates into the mold in a depressurized state while being impregnated and defoamed into the fiber reinforcement, the fiber reinforcement is first supplied to the mold, and then the resin composition is fiber-reinforced. In principle, it is supplied onto the material, but this may be repeated, or the fiber reinforced material and the resin composition may be supplied simultaneously. To supply while cutting the glass roving of the fiber reinforcement and further to spray-supply the resin composition, the spray-up machine used in the spray-up method can be used as it is.
【0011】[0011]
【実施例】以下、本発明の実施例を図1に従って説明す
る。図1の設備及び材料の具体的仕様を次のようにして
実施した。 1.設備の仕様 (1)型:寸法 幅×長さ×高さ=1000×1000
×1000mm :材質 パンチドメタル製 :開孔率 50% :表面積 約5m2 (2)減圧装置(排気ファン) :排気能力 200m3/min (3)樹脂、繊維強化材の供給装置 図1に示す樹脂組成物及び繊維強化材の供給部分はスプ
レイアップ機を使用し実施した。 スプレイアツプ機:(株)東技研製DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The specific specifications of the equipment and materials of FIG. 1 were implemented as follows. 1. Equipment specifications (1) Type: dimensions Width x length x height = 1000 x 1000
× 1000mm: Material Punched metal: Open area ratio 50%: Surface area approx. 5m 2 (2) Pressure reducing device (exhaust fan): Exhaust capacity 200m 3 / min (3) Supply device for resin and fiber reinforced material Fig. 1 The supply portion of the resin composition and the fiber reinforcement was carried out using a spray-up machine. Spray up machine: manufactured by Togiken Co., Ltd.
【0012】2.使用材料 (1)繊維強化材 ガラスロービング:RS−240F−114AJ(日東
紡績株式会社製) (2)不飽和ポリエステル樹脂:ポリセット5595A
PT−S(日立化成工業株式会社製) (3)硬化剤:パーメックN(日本油脂株式会社製)2. Materials used (1) Fiber reinforced material Glass roving: RS-240F-114AJ (manufactured by Nitto Boseki Co., Ltd.) (2) Unsaturated polyester resin: Polyset 5595A
PT-S (manufactured by Hitachi Chemical Co., Ltd.) (3) Hardener: Permec N (manufactured by NOF Corporation)
【0013】3.成形法 型の表面にフッ素系離型剤(フレコートFRP:HYS
OL AERROSPACE & INDUSTRIA
L PRODUCTS DIVISION)を塗布し離
型処理をする。次に減圧装置を運転し、減圧調整用ダン
パーを250mmHgに調節した。次にスプレイアップ
機を使用してガラスロービングを50mmにカットしな
がら型の表面に約12kgを均一に吹き付けた(ガラス
チョップの吐出能力を3kg/minに調節した)。次
にスプレイアップ機を使用して樹脂液に硬化剤を混合し
ながら型表面のガラスチョップの上に吹き付けた(吹き
付け量 24kg、また硬化剤混合割合 1.0重量
%、組成物の吐出量 約6kg/minになるようスプ
レイアップ機を調節した)。樹脂組成物の吹き付け後約
5分でガラスチョップに樹脂組成物が含浸し、脱泡され
た状態になった。この時点で減圧調整用ダンパーを50
mmHgに調節した。更に常温で5分放置後樹脂の硬化
が開始した。全体に樹脂が硬化した時点で減圧装置の排
気ファンの運転を停止した。更に20分常温放置して硬
化させ離型して図2に示すFRP成形品(厚さは約4.
6mm、数字の単位はmmである)を得た。3. Molding method Fluorine-based release agent (Frecoat FRP: HYS
OL AEROSPACE & INDUSTRIA
L PRODUCTS DIVISION) is applied and mold release processing is performed. Next, the decompression device was operated to adjust the decompression adjusting damper to 250 mmHg. Next, about 12 kg was uniformly sprayed onto the surface of the mold while the glass roving was cut into 50 mm by using a spray-up machine (the discharge capacity of the glass chop was adjusted to 3 kg / min). Next, using a spray-up machine, the resin liquid was mixed with the curing agent and sprayed onto the glass chops on the mold surface (spraying amount: 24 kg, curing agent mixing ratio: 1.0% by weight, composition discharge amount: approx. The spray-up machine was adjusted to 6 kg / min). Approximately 5 minutes after spraying the resin composition, the glass chop was impregnated with the resin composition and became in a defoamed state. At this point, set the decompression adjustment damper to 50
It was adjusted to mmHg. Further, after standing at room temperature for 5 minutes, curing of the resin started. The operation of the exhaust fan of the decompression device was stopped when the resin was completely cured. Further, it is left at room temperature for 20 minutes to cure and release, and then the FRP molded product shown in FIG. 2 (thickness is about 4.
6 mm, the unit of numbers is mm).
【0014】[0014]
【発明の効果】本発明のFRP成形品の製造方法におい
ては、減圧状態を利用して繊維強化材に樹脂組成物を含
浸脱泡させるため、従来のハンドレイアップ法、スプレ
イアツプ法等で行われる繊維強化材に樹脂を含浸し、脱
泡ロールを用いて脱泡させる脱泡作業が省略できる。ま
た、脱泡が短時間に出来るので樹脂の硬化時間の短い樹
脂の使用が可能となり、脱型までの時間が短縮でき、従
来のハンドレイ法、スプレイアップ法等に比較し、省力
化と生産性の向上が可能である。In the method for producing an FRP molded product of the present invention, the fiber reinforced material is impregnated and degassed by utilizing the reduced pressure state. Therefore, the conventional hand layup method, spray up method or the like is used. It is possible to omit the defoaming work of impregnating the fiber reinforcement with a resin and defoaming it using a defoaming roll. Also, since defoaming can be done in a short time, it is possible to use a resin with a short curing time of the resin, the time until demolding can be shortened, and labor saving and productivity are improved as compared with the conventional handlay method, spray up method, etc. Can be improved.
【図1】本発明の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.
【図2】本発明の実施例で得た成形品の略図である。FIG. 2 is a schematic view of a molded product obtained in an example of the present invention.
1 成形型 2 小孔 3 減圧装置 4 減圧調整用ダンパー 5 圧力ゲージ 6 カッター 7 スプレイガン 10 ガラスロービング 11 ガラスチョップ 12 樹脂液 13 硬化剤 14 樹脂組成物 1 Mold 2 Small hole 3 Pressure reducing device 4 Pressure reducing adjustment damper 5 Pressure gauge 6 Cutter 7 Spray gun 10 Glass roving 11 Glass chop 12 Resin liquid 13 Curing agent 14 Resin composition
Claims (1)
状態に保ち、該小孔から大気を吸引しつつ、型の大気に
接する面を繊維強化材で覆いながらまたは繊維強化材を
型に吸い付けた状態で、樹脂組成物を吹き付けまたは散
布し、繊維強化材に樹脂組成物を含浸させ硬化させるこ
とを特徴とする繊維強化プラスチック成形品の製造方
法。Claim: What is claimed is: 1. One side of a mold having a large number of small holes is kept in a depressurized state, and while sucking air from the small holes, the surface of the mold which is in contact with the atmosphere is covered with a fiber reinforced material. A method for producing a fiber-reinforced plastic molded article, which comprises spraying or spraying a resin composition while impregnating the fiber reinforcement with a mold and impregnating the resin composition with the resin composition to cure the resin composition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3175341A JPH0516251A (en) | 1991-07-16 | 1991-07-16 | Manufacture of fiber-reinforced plastic molded form |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3175341A JPH0516251A (en) | 1991-07-16 | 1991-07-16 | Manufacture of fiber-reinforced plastic molded form |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0516251A true JPH0516251A (en) | 1993-01-26 |
Family
ID=15994371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3175341A Pending JPH0516251A (en) | 1991-07-16 | 1991-07-16 | Manufacture of fiber-reinforced plastic molded form |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0516251A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010510086A (en) * | 2006-11-18 | 2010-04-02 | ベントレー モーターズ リミテッド | Mold product and manufacturing method thereof |
KR102537759B1 (en) * | 2022-10-24 | 2023-06-02 | (주)제이엠지테크 | Butterfly valve and manufacturing method thereof |
-
1991
- 1991-07-16 JP JP3175341A patent/JPH0516251A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010510086A (en) * | 2006-11-18 | 2010-04-02 | ベントレー モーターズ リミテッド | Mold product and manufacturing method thereof |
US8591781B2 (en) | 2006-11-18 | 2013-11-26 | Bentley Motors Limited | Moulded product and method of producing it |
KR102537759B1 (en) * | 2022-10-24 | 2023-06-02 | (주)제이엠지테크 | Butterfly valve and manufacturing method thereof |
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