JPH05177722A - Structure of composite fiber reinforced resin tube and its manufacture - Google Patents
Structure of composite fiber reinforced resin tube and its manufactureInfo
- Publication number
- JPH05177722A JPH05177722A JP3346395A JP34639591A JPH05177722A JP H05177722 A JPH05177722 A JP H05177722A JP 3346395 A JP3346395 A JP 3346395A JP 34639591 A JP34639591 A JP 34639591A JP H05177722 A JPH05177722 A JP H05177722A
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- fiber reinforced
- outer cylinder
- cylindrical body
- cylinder
- 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
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、複合繊維強化樹脂管
の構造及びその製造方法に係わり、更に詳しくは耐衝撃
性及びエネルギー吸収性能に優れた複合構造の繊維強化
樹脂管の構造及びそ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 structure of a composite fiber reinforced resin pipe and a method for manufacturing the same, and more particularly to a structure of a fiber reinforced resin pipe having a composite structure excellent in impact resistance and energy absorption performance and its manufacture. It is about the method.
【０００２】[0002]
【従来の技術】従来、ガラスファイバー，カーボンファ
イバー等の熱硬化樹脂管の曲げ衝撃性を改善すべく、熱
硬化樹脂管の表面に可撓性繊維強化樹脂材料、例えば、
エポキシ／ポリエステル繊維，エポキシ／高密度ポリエ
チレン繊維またはエポキシ／ケブラー繊維等を被覆強化
していた。2. Description of the Related Art Conventionally, in order to improve the bending impact of a thermosetting resin tube such as a glass fiber or a carbon fiber, a flexible fiber reinforced resin material such as
Epoxy / polyester fiber, epoxy / high-density polyethylene fiber or epoxy / Kevlar fiber was coated and reinforced.
【０００３】[0003]
【課題を解決するための手段】然しながら、上記のよう
な構造の樹脂管の場合、繊維自体に可撓性があってもマ
トリックス樹脂としてのエポキシ樹脂やビニルエステル
樹脂がタフネス性に乏しいため、衝撃性の改善には差ほ
ど効果が得られなかった。この発明は、かかる従来の課
題に着目して案出されたもので、内筒に剛性，構造強度
を持たせると共に、外筒には耐外傷性及び靭性に優れた
二重構造の筒状体とすることが出来る複合繊維強化樹脂
管の構造及びその製造方法を提供することを目的とする
ものである。However, in the case of a resin pipe having the above structure, the epoxy resin or vinyl ester resin as the matrix resin has poor toughness even if the fiber itself is flexible, and It was not so effective in improving sex. The present invention has been devised in view of the above-mentioned conventional problems, and the inner cylinder has rigidity and structural strength, and the outer cylinder has a double-structured cylindrical body excellent in scratch resistance and toughness. It is an object of the present invention to provide a structure of a composite fiber reinforced resin pipe that can be manufactured as follows and a method for manufacturing the same.
【０００４】[0004]
【課題を解決するための手段】この発明は、上記目的を
達成するため、繊維強化樹脂を素材とする内筒と、この
内筒を挿入した外筒とを一体的に成形して成る複合繊維
強化樹脂管の構造であって、前記内筒を繊維強化熱硬化
性樹脂材料で構成すると共に、外筒を繊維強化熱可塑性
樹脂材料で構成したことを要旨とするものである。In order to achieve the above object, the present invention is a composite fiber obtained by integrally molding an inner cylinder made of a fiber reinforced resin and an outer cylinder into which the inner cylinder is inserted. The gist of the structure of the reinforced resin pipe is that the inner cylinder is made of a fiber reinforced thermosetting resin material and the outer cylinder is made of a fiber reinforced thermoplastic resin material.
【０００５】[0005]
【発明の作用】この発明は、上記のように構成され、繊
維強化熱可塑性樹脂材料により成形したプリプレグシー
トをマンドレルに巻付けて外筒を成形し、繊維強化熱硬
化性樹脂材料により成形したプリプレグシートをマンド
レルに巻付けて内筒を成形し、前記外筒に内筒を挿入し
た後、この二重構造の筒状体を成形型内に挿入し、更に
筒状体を構成する内筒の内部から内圧をかけた状態で加
熱硬化させることにより、二重構造の筒状体を成形する
ことにより、内筒に剛性，構造強度を持たせると共に、
外筒には耐外傷性及び靭性に優れた二重構造の筒状体と
することが出来るものである。The present invention is constructed as described above, and a prepreg sheet formed of a fiber reinforced thermoplastic resin material is wound around a mandrel to form an outer cylinder, and a prepreg formed of a fiber reinforced thermosetting resin material. A sheet is wound around a mandrel to form an inner cylinder, and after inserting the inner cylinder into the outer cylinder, the double-structured cylindrical body is inserted into a molding die, and the inner cylinder constituting the cylindrical body is further inserted. By heat-curing with internal pressure applied from the inside to form a double-structured cylindrical body, the inner cylinder has rigidity and structural strength, and
The outer cylinder can be made into a double-structured cylindrical body having excellent trauma resistance and toughness.
【０００６】[0006]
【発明の実施例】以下、添附図面に基づいて、この発明
の実施例を説明する。図１の（ａ）または（Ａ）〜
（ｇ）は、この発明を実施した複合繊維強化樹脂管の製
造工程を示す説明図であって、図１の（ａ）〜図１の
（ｃ）は、繊維強化熱可塑性樹脂材料により成形したプ
リプレグシートをマンドレルに巻付けて外筒を成形する
成形工程の説明図、図１の（Ａ）〜図１の（Ｃ）は、繊
維強化熱硬化性樹脂材料により成形したプリプレグシー
トをマンドレルに巻付けて内筒を成形する成形工程の説
明図である。Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 (a) or (A) of FIG.
(G) is explanatory drawing which shows the manufacturing process of the composite fiber reinforced resin pipe which implemented this invention, (a) of FIG. 1- (c) of FIG. 1 was shape | molded by the fiber reinforced thermoplastic resin material. An explanatory view of a forming step of forming an outer cylinder by winding a prepreg sheet around a mandrel, and (A) to (C) of FIG. 1 show a prepreg sheet formed of a fiber reinforced thermosetting resin material and wound around a mandrel. It is explanatory drawing of the forming process which attaches and forms an inner cylinder.
【０００７】まず、外筒の製造工程を説明すると、図１
の（ａ）に示すようなガラスファイバー，カーボンファ
イバー等の熱可塑性樹脂のプリプレグシート１を、図１
の（ｂ）に示すようにマンドレル２に巻付けて筒状に形
成し、マンドレル２を引き抜いて図１の（ｃ）に示すよ
うに熱可塑性樹脂の外筒３を形成する。一方、内筒の製
造工程を説明すると、図１の（Ａ）に示すようなガラス
ファイバー，カーボンファイバー等の熱硬化性樹脂のプ
リプレグシート１を、図１の（Ｂ）に示すようにマンド
レル２に巻付けて筒状に形成し、マンドレル２を引き抜
いて図１の（Ｃ）に示すように熱硬化性樹脂の内筒４を
形成する。First, the manufacturing process of the outer cylinder will be described with reference to FIG.
As shown in FIG. 1 (a), a prepreg sheet 1 made of a thermoplastic resin such as glass fiber or carbon fiber is shown in FIG.
1 (b), the mandrel 2 is wrapped around to form a tubular shape, and the mandrel 2 is pulled out to form an outer cylinder 3 of a thermoplastic resin as shown in FIG. 1 (c). On the other hand, to explain the manufacturing process of the inner cylinder, a prepreg sheet 1 made of a thermosetting resin such as glass fiber or carbon fiber as shown in FIG. 1 (A) and a mandrel 2 as shown in FIG. 1 (B) are used. Then, the mandrel 2 is pulled out to form an inner cylinder 4 made of a thermosetting resin as shown in FIG. 1 (C).
【０００８】このように、外筒３と内筒４とを別々に成
形して組み付ける場合、外筒３と内筒４との樹脂硬化温
度が一定の場合に行なうものである。次に、図１の
（ｄ）に示すように、外筒３を内筒４に挿入し、この
時、外筒３と内筒４との間には、若干の間隙があっても
良い。このように組み付けた二重筒状体５を、図１の
（ｅ）に示すように所定形状の成形型６（外型）の一端
側からその内部に挿入または嵌込み、二重筒体５の内面
側にバルブ７を備えるゴムブラダー８を挿入し、図１の
（ｅ）に示すように成形型６の他端側を蓋部材９により
閉鎖した状態で、前記ゴムブラダー８のバルブ７からブ
ラダー８内にエアーを供給して膨張させる。As described above, the outer cylinder 3 and the inner cylinder 4 are separately molded and assembled when the resin curing temperatures of the outer cylinder 3 and the inner cylinder 4 are constant. Next, as shown in FIG. 1 (d), the outer cylinder 3 is inserted into the inner cylinder 4, and at this time, there may be a slight gap between the outer cylinder 3 and the inner cylinder 4. The double cylindrical body 5 thus assembled is inserted or fitted into the molding die 6 (outer mold) having a predetermined shape from one end side thereof as shown in FIG. A rubber bladder 8 having a valve 7 is inserted into the inner surface of the rubber bladder 8, and the other end of the molding die 6 is closed by a lid member 9 as shown in FIG. Inflate air to expand.
【０００９】そして、上記のように二重筒状体５の内面
側に内圧をかけた状態で、この成形型６と共に図示しな
い加熱オーブンに入れ、加熱硬化させると、外筒３を内
筒４との境界部分の樹脂が溶解して一体的になり、この
二重筒状体５を硬化した後に二重筒状体５を脱型させる
ことにより、外筒３と内筒４とが一体化した二重筒状体
５ａを成形することが出来るものである（図１の
（ｇ））。Then, with the inner pressure applied to the inner surface side of the double-cylindrical body 5 as described above, it is placed in a heating oven (not shown) together with the molding die 6 and cured by heating. The resin in the boundary portion between the outer cylinder 3 and the inner cylinder 4 is melted and integrated, and the double cylinder 5 is demolded after the double cylinder 5 is cured. The double cylindrical body 5a can be molded ((g) in FIG. 1).
【００１０】以上のように、この発明の実施例では、繊
維強化熱可塑性樹脂材料により成形したプリプレグシー
ト１をマンドレル２に巻付けて外筒３を成形し、繊維強
化熱硬化性樹脂材料により成形したプリプレグシート１
をマンドレル２に巻付けて内筒４を成形し、前記外筒３
に内筒４を挿入した後、この二重構造の筒状体５を成形
型６内に挿入し、更に筒状体５を構成する内筒４の内部
から内圧をかけた状態で加熱硬化させることにより、二
重構造の筒状体５を成形することにより、内筒４に剛
性，構造強度を持たせると共に、外筒３には耐外傷性及
び靭性に優れた二重構造の筒状体とすることが出来るも
のである。As described above, in the embodiment of the present invention, the prepreg sheet 1 formed of the fiber reinforced thermoplastic resin material is wound around the mandrel 2 to form the outer cylinder 3, and the prepreg sheet 1 is formed of the fiber reinforced thermosetting resin material. Prepreg sheet 1
Is wound around the mandrel 2 to form the inner cylinder 4, and the outer cylinder 3
After inserting the inner cylinder 4 into the mold, the double-structured cylindrical body 5 is inserted into the molding die 6, and is further heated and hardened under internal pressure applied from the inside of the inner cylinder 4 constituting the cylindrical body 5. Thus, by molding the double-structured tubular body 5, the inner cylinder 4 has rigidity and structural strength, and the outer barrel 3 has a double-structured tubular body excellent in external damage resistance and toughness. Can be.
【００１１】なお、上記の実施例では、外筒３と内筒４
との樹脂硬化温度が同じ場合の成形工程について説明し
たが、外筒３の樹脂硬化温度が高い場合には、外筒３を
成形型６内に挿入してブラダー８により内圧をかけた状
態で加熱硬化させることにより外筒３を成形しておく。
そして、この外筒３を外型として内筒４を挿入し、内圧
をかけて加熱硬化させることにより、上記のような二重
構造の複合管を製造することが出来るものである。In the above embodiment, the outer cylinder 3 and the inner cylinder 4 are arranged.
The molding process in the case where the resin curing temperature is the same as that of the above, but when the resin curing temperature of the outer cylinder 3 is high, the outer cylinder 3 is inserted into the molding die 6 and the inner pressure is applied by the bladder 8. The outer cylinder 3 is molded by heating and curing.
Then, the outer cylinder 3 is used as an outer mold, the inner cylinder 4 is inserted, and an inner pressure is applied to heat and cure the inner cylinder 4, whereby the above-described double-structured composite pipe can be manufactured.
【００１２】[0012]
【発明の効果】この発明は、上記のように繊維強化熱可
塑性樹脂材料により成形したプリプレグシートをマンド
レルに巻付けて外筒を成形し、繊維強化熱硬化性樹脂材
料により成形したプリプレグシートをマンドレルに巻付
けて内筒を成形し、前記外筒に内筒を挿入した後、この
二重構造の筒状体を成形型内に挿入し、更に筒状体を構
成する内筒の内部から内圧をかけた状態で加熱硬化させ
ることにより、二重構造の筒状体を成形することによ
り、内筒に剛性，構造強度を持たせると共に、外筒には
耐外傷性及び靭性に優れた二重構造の筒状体を成形で
き、これによりエネルギー吸収に優れた複合構造体を成
形でき、また小石等による耐ピッチング性にも優れるの
で、自転車のフレーム用チューブや自動車のドライブシ
ャフト等、衝撃を受け易い用途に最適なものである。As described above, according to the present invention, the prepreg sheet formed of the fiber reinforced thermoplastic resin material as described above is wound around the mandrel to form the outer cylinder, and the prepreg sheet formed of the fiber reinforced thermosetting resin material is formed into the mandrel. After winding the inner cylinder to form an inner cylinder and inserting the inner cylinder into the outer cylinder, the double-structured cylindrical body is inserted into the molding die, and the inner pressure is applied from the inside of the inner cylinder forming the cylindrical body. By heat-curing in a state of being applied, a double-structured tubular body is formed to give the inner cylinder rigidity and structural strength, and the outer cylinder has a double-layer structure with excellent trauma resistance and toughness. It is possible to form a cylindrical body with a structure, which makes it possible to form a composite structure that excels in energy absorption. Also, because it has excellent pitting resistance due to pebbles, etc., it can be impacted by shocks such as bicycle frame tubes and automobile drive shafts. It is the best thing to have applications.
【図１】図１の（ａ）または（Ａ）〜（ｇ）は、この発
明を実施した複合繊維強化樹脂管の製造工程を示す説明
図であって、図１の（ａ）〜図１の（ｃ）は、繊維強化
熱可塑性樹脂材料により成形したプリプレグシートをマ
ンドレルに巻付けて外筒を成形する成形工程の説明図、
図１の（Ａ）〜図１の（Ｃ）は、繊維強化熱硬化性樹脂
材料により成形したプリプレグシートをマンドレルに巻
付けて内筒を成形する成形工程の説明図である。図１の
（ｄ）は外筒に内筒を挿入した状態を示す二重筒状体の
斜視図、図１の（ｅ）は成形型内に二重筒状体を挿入
し、その内部からブラダーにより加圧する工程を示す説
明図、図１の（ｆ）は成形型内に二重筒状体を挿入し、
オーブンに入れて加熱加圧する工程の説明図である。図
１の（ｇ）は加熱硬化後の二重筒状態の斜視図である。1 (a) or (A) to (g) is an explanatory view showing a manufacturing process of a composite fiber reinforced resin pipe in which the present invention is carried out, and FIGS. (C) is an explanatory view of a molding step of forming an outer cylinder by winding a prepreg sheet formed of a fiber reinforced thermoplastic resin material around a mandrel,
1 (A) to 1 (C) are explanatory views of a forming process in which a prepreg sheet formed of a fiber-reinforced thermosetting resin material is wound around a mandrel to form an inner cylinder. FIG. 1D is a perspective view of the double-cylindrical body showing a state in which the inner cylinder is inserted into the outer cylinder, and FIG. 1E is a perspective view of the double-cylindrical body inserted into the molding die from the inside. An explanatory view showing a step of pressurizing with a bladder, FIG. 1 (f) shows that a double cylindrical body is inserted into a molding die,
It is explanatory drawing of the process of putting in an oven and heating and pressurizing. FIG. 1G is a perspective view of the double-cylinder state after heat curing.
１ プリプレグシート ２ マン
ドレル ３ 外筒 ４ 内筒 ５，５ａ 二重筒状体 ６ 成形
型（外型） ８ ゴムブラダー ９ 蓋部
材1 Prepreg Sheet 2 Mandrel 3 Outer Cylinder 4 Inner Cylinder 5, 5a Double Cylindrical Body 6 Mold (Outer Mold) 8 Rubber Bladder 9 Lid Member
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 23:22 4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI technical display location B29L 23:22 4F
Claims (2)
内筒を挿入した外筒とを一体的に成形して成る複合繊維
強化樹脂管の構造であって、前記内筒を繊維強化熱硬化
性樹脂材料で構成すると共に、外筒を繊維強化熱可塑性
樹脂材料で構成したことを特徴とする複合繊維強化樹脂
管の構造。1. A structure of a composite fiber reinforced resin pipe formed by integrally molding an inner cylinder made of a fiber reinforced resin and an outer cylinder into which the inner cylinder is inserted, wherein the inner cylinder is fiber reinforced. A structure of a composite fiber reinforced resin pipe, characterized in that it is made of a thermosetting resin material and an outer cylinder is made of a fiber reinforced thermoplastic resin material.
たプリプレグシートをマンドレルに巻付けて外筒を成形
し、繊維強化熱硬化性樹脂材料により成形したプリプレ
グシートをマンドレルに巻付けて内筒を成形し、前記外
筒に内筒を挿入した後、この二重構造の筒状体を成形型
内に挿入し、更に筒状体を構成する内筒の内部から内圧
をかけた状態で加熱硬化させることにより、二重構造の
筒状体を成形することを特徴とする複合繊維強化樹脂管
の製造方法。2. A prepreg sheet formed of a fiber reinforced thermoplastic resin material is wound around a mandrel to form an outer cylinder, and a prepreg sheet formed of a fiber reinforced thermosetting resin material is wound around a mandrel to form an inner cylinder. Then, after inserting the inner cylinder into the outer cylinder, this double-structured cylindrical body is inserted into the molding die, and is further heated and hardened under internal pressure applied from the inside of the inner cylinder forming the cylindrical body. Thus, a method for producing a composite fiber-reinforced resin pipe, characterized in that a tubular body having a double structure is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3346395A JPH05177722A (en) | 1991-12-27 | 1991-12-27 | Structure of composite fiber reinforced resin tube and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3346395A JPH05177722A (en) | 1991-12-27 | 1991-12-27 | Structure of composite fiber reinforced resin tube and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05177722A true JPH05177722A (en) | 1993-07-20 |
Family
ID=18383137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3346395A Pending JPH05177722A (en) | 1991-12-27 | 1991-12-27 | Structure of composite fiber reinforced resin tube and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05177722A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000024989A (en) * | 1998-10-07 | 2000-05-06 | 토니헬샴 | Composite cylinder and method for manufacturing thereof |
| KR100711596B1 (en) * | 2006-02-22 | 2007-04-27 | (주) 한국절연물산 | Method for preparing insulating pipe coated with epoxy and insulating pipe using the method |
| CN103863486A (en) * | 2012-12-11 | 2014-06-18 | 源民安企业股份有限公司 | Shock-absorption bicycle frame and production method thereof |
| CN104691026A (en) * | 2013-12-09 | 2015-06-10 | 周中哲 | Composite tube for support structure and method of making same |
| US9566748B2 (en) | 2013-12-09 | 2017-02-14 | National Applied Research Laboratories | FRP composite wrapped grooved-wall lining tubular structure, and method of manufacturing |
| CN113103617A (en) * | 2021-03-25 | 2021-07-13 | 上海迪诺克新材料科技有限公司 | Composite material forming method combining thermoplastic material and thermosetting material |
-
1991
- 1991-12-27 JP JP3346395A patent/JPH05177722A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000024989A (en) * | 1998-10-07 | 2000-05-06 | 토니헬샴 | Composite cylinder and method for manufacturing thereof |
| KR100711596B1 (en) * | 2006-02-22 | 2007-04-27 | (주) 한국절연물산 | Method for preparing insulating pipe coated with epoxy and insulating pipe using the method |
| CN103863486A (en) * | 2012-12-11 | 2014-06-18 | 源民安企业股份有限公司 | Shock-absorption bicycle frame and production method thereof |
| CN104691026A (en) * | 2013-12-09 | 2015-06-10 | 周中哲 | Composite tube for support structure and method of making same |
| US9566748B2 (en) | 2013-12-09 | 2017-02-14 | National Applied Research Laboratories | FRP composite wrapped grooved-wall lining tubular structure, and method of manufacturing |
| CN113103617A (en) * | 2021-03-25 | 2021-07-13 | 上海迪诺克新材料科技有限公司 | Composite material forming method combining thermoplastic material and thermosetting material |
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