JPH0737080B2 - Method for producing composite molded article composed of thermoplastic resin and reinforcing fiber - Google Patents
Method for producing composite molded article composed of thermoplastic resin and reinforcing fiberInfo
- Publication number
- JPH0737080B2 JPH0737080B2 JP61088125A JP8812586A JPH0737080B2 JP H0737080 B2 JPH0737080 B2 JP H0737080B2 JP 61088125 A JP61088125 A JP 61088125A JP 8812586 A JP8812586 A JP 8812586A JP H0737080 B2 JPH0737080 B2 JP H0737080B2
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- reinforcing fiber
- molded article
- composite molded
- 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.)
- Expired - Fee Related
Links
- 229920005992 thermoplastic resin Polymers 0.000 title claims description 17
- 239000012783 reinforcing fiber Substances 0.000 title claims description 10
- 239000002131 composite material Substances 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000009954 braiding Methods 0.000 claims description 2
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 239000000835 fiber Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- -1 polybutylene terephthalate Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 description 3
- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004962 Polyamide-imide Substances 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 238000009730 filament winding Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002312 polyamide-imide Polymers 0.000 description 2
- 229920001230 polyarylate Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920006380 polyphenylene oxide Polymers 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 238000012369 In process control Methods 0.000 description 1
- 240000007182 Ochroma pyramidale Species 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229920006038 crystalline resin Polymers 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 （利用分野） 本発明は熱可塑性樹脂と補強繊維とからなる複合成形品
の製造方法に関し、更に詳しくはパイプ，ロッドなどを
成形する新規な製造方法に係る。TECHNICAL FIELD The present invention relates to a method for manufacturing a composite molded article composed of a thermoplastic resin and a reinforcing fiber, and more particularly to a novel manufacturing method for molding pipes, rods and the like.
（従来技術） 従来、繊維強化プラスチック（以下FRPという）で作ら
れたパイプ等は補強繊維としてガラス繊維、カーボン繊
維、アラミド繊維が用いられ、マトリックス樹脂として
不飽和ポリエステル、ビニルエステル、エポキシ等の熱
可塑性樹脂をもって作られている。そして一般にはパイ
プ等はいわゆるフィラメントワインディング法によって
回転するマンドレル表面に樹脂、助剤などを含浸したフ
ィラメント（繊維）を巻きつけ、その後これを加熱して
樹脂を硬化させるものである。(Prior Art) Conventionally, pipes and the like made of fiber reinforced plastic (hereinafter referred to as FRP) use glass fibers, carbon fibers, and aramid fibers as reinforcing fibers, and heat of unsaturated polyester, vinyl ester, epoxy, etc. as matrix resin. Made with plastic resin. In general, a pipe or the like is formed by winding a filament (fiber) impregnated with a resin, an auxiliary agent, etc. around a rotating mandrel surface by a so-called filament winding method, and then heating this to cure the resin.
しかしながら、熱可塑性樹脂を用いるこの方法は、使用
される樹脂中に硬化剤、触媒、モノマー、或いは溶剤が
配合されており、この配合された液状樹脂の可使時間の
管理、粘度の管理或いはモノマー、溶剤の揮散など液状
樹脂の取扱いに関連して多くの問題を有しており、又硬
化時においても硬化時間が長く生産性が極めて悪いもの
となる。However, in this method using a thermoplastic resin, a curing agent, a catalyst, a monomer, or a solvent is mixed in the resin to be used, and the control of the pot life of the liquid resin thus mixed, the management of the viscosity, or the monomer is performed. However, there are many problems associated with the handling of liquid resins, such as the evaporation of solvents, and the curing time is long even during curing, resulting in extremely poor productivity.
（本発明の目的） 本発明はこのような従来技術による不具合点を解決し、
生産性のすぐれた新規なFRP成形体の製造方法を提供す
るにある。(Object of the Present Invention) The present invention solves the above-mentioned problems caused by the conventional technique,
Another object of the present invention is to provide a method for producing a novel FRP molded product having excellent productivity.
（本発明の構成） 即ち、本発明の要旨は、マンドレル上に熱可塑性樹脂を
含浸した補強繊維を巻付け或いは編上げて予備成形体を
作る工程と、この予備成形体を前記熱可塑性樹脂の軟化
温度以上に加熱する工程と、この加熱された予備成形体
を金型内で加圧しながら冷却する工程とからなる熱可塑
性樹脂と補強繊維とからなる複合成形品の製造方法に係
るものである。(Structure of the present invention) That is, the gist of the present invention is to wind or knit a reinforcing fiber impregnated with a thermoplastic resin on a mandrel to make a preformed body, and to soften the thermoplastic resin from the preformed body. The present invention relates to a method for producing a composite molded article composed of a thermoplastic resin and a reinforcing fiber, which includes a step of heating the preformed body at a temperature equal to or higher than a temperature and a step of cooling the heated preform while pressurizing it in a mold.
本発明で使用される熱可塑性樹脂としては、ポリアミ
ド、ポリブチレンテレフタレート、ポリカーボネート、
ポリフェニレンオキサイド、ポリフェニレンスルフィ
ド、ポリスルホン、ポリエーテルスルホン、ポリエーテ
ルエーテルケトン、ポリアリレート、ポリアミドイミ
ド、液晶ポリマー、ポリオキシベンゾイルなどがある。
これらの熱可塑性樹脂は溶融状態で補強繊維上に供給さ
れ加圧ローラーあるいは加圧ベルトで繊維間に含浸され
連続して引き出される。得られる熱可塑性樹脂を含浸し
た繊維は、シート状、リボン状、或いはストランド状で
ある。As the thermoplastic resin used in the present invention, polyamide, polybutylene terephthalate, polycarbonate,
There are polyphenylene oxide, polyphenylene sulfide, polysulfone, polyether sulfone, polyether ether ketone, polyarylate, polyamideimide, liquid crystal polymer, polyoxybenzoyl and the like.
These thermoplastic resins are supplied in a molten state onto the reinforcing fibers, impregnated between the fibers by a pressure roller or a pressure belt, and continuously withdrawn. The fiber impregnated with the thermoplastic resin obtained is in the form of a sheet, a ribbon, or a strand.
本発明で用いられる樹脂はそのままで或いは変性して適
当な溶媒に溶かした溶液として補強繊維上に供給するこ
とも出来る。この場合には、含浸シートは、引きつづき
乾燥ゾーンで脱溶媒される。The resin used in the present invention may be supplied to the reinforcing fiber as it is or as a solution obtained by modifying it and dissolving it in an appropriate solvent. In this case, the impregnated sheet is subsequently desolvated in the drying zone.
本発明で用いられる補強繊維としては、ガラス繊維、カ
ーボン繊維、ボロン繊維、アラミド繊維、セラミック系
繊維或いはこれらの複合繊維などであり、クロス或いは
フィラメントで上記熱可塑性樹脂含浸に供される。The reinforcing fibers used in the present invention are glass fibers, carbon fibers, boron fibers, aramid fibers, ceramic fibers, or composite fibers thereof, and are used for impregnating the thermoplastic resin with a cloth or filament.
次に本発明の製造方法について工程順に従って説明す
る。第１の工程は、マンドレルの上に熱可塑性樹脂を含
浸した繊維を巻き付け或いは編上げて予備成形体をつく
る工程である。この工程においては、通常のフィラメン
トワインディング装置、ブレーダー、或いはシートワイ
ンディング装置が使用される。またこの工程において
は、巻き付け部分或いは編上げ部分を局所的に加熱する
ことにより、繊維を柔軟化し巻き付け易くしたり、巻き
付けられた繊維のバラケを防止することが行われる。マ
ンドレルとしては、金属、ゴム等やバルサ材、合成樹脂
発泡体などが使われる。Next, the manufacturing method of the present invention will be described in the order of steps. The first step is a step of winding or braiding fibers impregnated with a thermoplastic resin on a mandrel to form a preform. In this process, a normal filament winding device, a braider, or a sheet winding device is used. Further, in this step, locally heating the wound portion or the braided portion softens the fibers to facilitate winding, and prevents the wound fibers from being scattered. As the mandrel, metal, rubber, balsa material, synthetic resin foam or the like is used.
本発明の第２の工程は、前記の第１工程で得られた予備
成形体を前記熱可塑性樹脂の軟化温度以上に加熱する工
程である。軟化温度は樹脂の種類により異なり、例えば
ポリアミドは250℃、ポリブチレンテレフタレート220
℃、ポリカーボネート150℃、ポリフェニレンオキサイ
ド140℃、ポリフェニレンスルフィド260℃、ポリスルホ
ン180℃、ポリエーテルスルホン220℃、ポリエーテルエ
ーテルケトン290℃、ポリアリレート180℃、ポリアミド
イミド280℃、液晶ポリマー360℃、ポリオキシベンゾイ
ル300℃以上の温度とする。加熱の方法は特に限定され
ず例えば遠赤外ヒーター、赤外ランプ熱風式オーブンな
どが用いられる。尚本工程の加熱工程を金型において実
施することも出来る。The second step of the present invention is a step of heating the preform obtained in the first step above the softening temperature of the thermoplastic resin. The softening temperature depends on the type of resin, for example, polyamide is 250 ° C, polybutylene terephthalate 220
℃, polycarbonate 150 ℃, polyphenylene oxide 140 ℃, polyphenylene sulfide 260 ℃, polysulfone 180 ℃, polyether sulfone 220 ℃, polyether ether ketone 290 ℃, polyarylate 180 ℃, polyamide imide 280 ℃, liquid crystal polymer 360 ℃, polyoxy Benzoyl 300 ℃ or more. The heating method is not particularly limited, and for example, a far infrared heater, an infrared lamp hot air oven, or the like is used. The heating step of this step can also be carried out in a mold.
本発明第３の工程は、加熱された予備成形体を金型内に
て加圧しながら冷却する工程である。この工程に於ける
金型の温度は、樹脂の軟化温度以下である。金型の温度
は低ければそれだけ樹脂の冷却固化速度が速くなり成形
時間が短縮されるが結晶性の樹脂に対しては結晶化度を
上げる為に急激な冷却を避けるなど使用する樹脂に応じ
て適宜最適温度が選ばれる。冷却時間は、樹脂の種類、
金型の温度によって異なるが通常30秒から５分ぐらいで
あるが熱可塑性樹脂に比べサイクルタイムは短かい。The third step of the present invention is a step of cooling the heated preform while pressurizing it in the mold. The temperature of the mold in this step is below the softening temperature of the resin. If the mold temperature is lower, the cooling and solidifying speed of the resin will be faster and the molding time will be shortened, but for crystalline resin, avoid rapid cooling to increase the crystallinity. The optimum temperature is appropriately selected. The cooling time depends on the type of resin,
Although it depends on the mold temperature, it usually takes 30 seconds to 5 minutes, but the cycle time is shorter than that of thermoplastic resin.
本発明においては、得られた成形体の寸法安定性や耐熱
性を向上する目的に熱処理を行なうことも出来る。In the present invention, heat treatment may be performed for the purpose of improving the dimensional stability and heat resistance of the obtained molded product.
（実施例） 熱可塑性樹脂としてポリフェニレンスルフィドを含浸し
た炭素繊維ロービング（3K）を用いた。また芯金として
は長さ1000mm、外径30mmの金属製の円筒を用いた。この
芯金を赤外ランプで加熱しながら毎分50回転の速さで回
転させ、前記したロービングを巻角度±45°で厚みが約
2mmになるまで巻きつけた。得られた筒状成形品を芯金
ごと加熱炉に入れ、280℃で10分加熱した後、加熱炉よ
り取り出し50℃の金型に入れ加圧冷却した。２分後型よ
り取出し芯金を引き抜くと平滑な表面を有するパイプが
得られた。(Example) Carbon fiber roving (3K) impregnated with polyphenylene sulfide was used as a thermoplastic resin. A metal cylinder having a length of 1000 mm and an outer diameter of 30 mm was used as the core metal. While rotating this core metal with an infrared lamp, rotate it at a speed of 50 rotations per minute, and the roving described above with a winding angle of ± 45 ° and a thickness of about
I wound it up to 2 mm. The obtained cylindrical molded product was placed in a heating furnace together with the cored bar, heated at 280 ° C. for 10 minutes, taken out of the heating furnace, placed in a mold at 50 ° C. and cooled under pressure. After 2 minutes, the core metal was taken out from the mold and the pipe having a smooth surface was obtained.
（効果） 本発明は上記構成から成り本発明の方法によれば寸法精
度にすぐれ、強度の大きい複合体を生産性良く製造する
ことが出来る。本発明で得られるパイプやロッドは、耐
食性、軽量化、絶縁性、断熱性を要求される用途に有用
に供される。(Effect) According to the method of the present invention having the above-mentioned structure, a composite having excellent dimensional accuracy and high strength can be manufactured with high productivity. INDUSTRIAL APPLICABILITY The pipe and rod obtained by the present invention are usefully provided for applications requiring corrosion resistance, weight reduction, insulation and heat insulation.
勿論本発明の特徴は工程管理上にも大きく表われ、熱硬
化樹脂にみられるような可使時間の管理、粘度の管理、
更には溶剤の揮散などの管理には力を注がなくてよいメ
リットもある。Of course, the features of the present invention are also greatly expressed in process control, such as pot life control, viscosity control, as seen in thermosetting resins.
Furthermore, there is an advantage that it is not necessary to focus on management such as volatilization of the solvent.
Claims (1)
強繊維を巻付け或いは編上げて予備成形体を作る工程
と、前記工程で得られた予備成形体を前記熱可塑性樹脂
の軟化温度以上に加熱する工程と、この加熱された予備
成形体を金型内にて加圧しながら冷却する工程とからな
る熱可塑性樹脂と補強繊維との複合成形品の製造方法。1. A step of winding or braiding a reinforcing fiber impregnated with a thermoplastic resin on a mandrel to form a preform, and heating the preform obtained in the step above a softening temperature of the thermoplastic resin. And a step of cooling the heated preform while pressurizing the heated preform in a mold, thereby producing a composite molded article of a thermoplastic resin and reinforcing fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61088125A JPH0737080B2 (en) | 1986-04-18 | 1986-04-18 | Method for producing composite molded article composed of thermoplastic resin and reinforcing fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61088125A JPH0737080B2 (en) | 1986-04-18 | 1986-04-18 | Method for producing composite molded article composed of thermoplastic resin and reinforcing fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62244622A JPS62244622A (en) | 1987-10-26 |
| JPH0737080B2 true JPH0737080B2 (en) | 1995-04-26 |
Family
ID=13934188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61088125A Expired - Fee Related JPH0737080B2 (en) | 1986-04-18 | 1986-04-18 | Method for producing composite molded article composed of thermoplastic resin and reinforcing fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737080B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308567A (en) * | 2004-04-22 | 2005-11-04 | Systec:Kk | Temperature-indicating molded article and its manufacturing method |
| JP5119697B2 (en) * | 2007-03-20 | 2013-01-16 | 東レ株式会社 | Manufacturing method of fiber reinforced composite material |
| JP5655386B2 (en) * | 2010-06-10 | 2015-01-21 | トヨタ自動車株式会社 | Manufacturing method of fiber reinforced plastic molding |
-
1986
- 1986-04-18 JP JP61088125A patent/JPH0737080B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62244622A (en) | 1987-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |