JP2002128921A - Prepreg for preventing different levels, manufacturing method of tubular body using the same and tubular body - Google Patents
Prepreg for preventing different levels, manufacturing method of tubular body using the same and tubular bodyInfo
- Publication number
- JP2002128921A JP2002128921A JP2000330059A JP2000330059A JP2002128921A JP 2002128921 A JP2002128921 A JP 2002128921A JP 2000330059 A JP2000330059 A JP 2000330059A JP 2000330059 A JP2000330059 A JP 2000330059A JP 2002128921 A JP2002128921 A JP 2002128921A
- Authority
- JP
- Japan
- Prior art keywords
- prepreg
- tubular body
- sheet
- preventing
- layer
- 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
- 230000003405 preventing effect Effects 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 42
- 238000000465 moulding Methods 0.000 claims abstract description 36
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims description 8
- 239000012783 reinforcing fiber Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 abstract description 14
- 239000004744 fabric Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 8
- 239000004917 carbon fiber Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 229920006300 shrink film Polymers 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 101150042515 DA26 gene Proteins 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000012779 reinforcing material 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
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はシートワインド成形
による表面が平滑なＦＲＰ製管状体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP tubular body having a smooth surface formed by sheet wind molding.
【０００２】[0002]
【従来の技術】従来、ガラス繊維、炭素繊維等を強化材
とし、合成樹脂をマトリックスとしたＦＲＰ製成形物は
スポーツ用品、自動車用品を含め広く使用されている。
特に釣竿やゴルフシャフト等の用途ではＦＲＰ製管状物
が用いられている。これらは、主にシートワインド成形
や、フィラメントワインド成形により製造される。しか
しながら、シートワインド成形によるＦＲＰ製管状物
は、シートの巻き始めや巻き終いの影響で管状物表面に
段差が生じるという問題があり、これを解決するために
種々検討がなされている。2. Description of the Related Art Conventionally, molded products made of FRP using glass fiber, carbon fiber or the like as a reinforcing material and a synthetic resin as a matrix have been widely used, including sports goods and automobile goods.
In particular, FRP tubular articles are used for applications such as fishing rods and golf shafts. These are mainly manufactured by sheet wind molding or filament wind molding. However, the FRP tubular article formed by sheet wind molding has a problem that a step is formed on the tubular article surface due to the influence of the start and end of winding of the sheet, and various studies have been made to solve this problem.
【０００３】成形された管状物表面の凹凸において凸
部を除去してから表面に樹脂を塗布する方法。この場
合、凸部を除去する際に補強繊維を切断するなどして強
度が低下する問題が生じる[0003] A method of applying a resin to the surface of a formed tubular object after removing the protrusions on the surface. In this case, there is a problem that the strength is reduced by cutting the reinforcing fiber when removing the convex portion.
【０００４】成型された管状物の表面に、段差がなく
なるように樹脂を塗布し硬化成形する方法（樹脂による
穴埋めの方法）。この場合、樹脂塗布工程や硬化成形工
程が増えるなど作業効率が非常に悪くなる。[0004] A method in which a resin is applied to the surface of a molded tubular article so as to eliminate a step and cured and molded (a method of filling the hole with the resin). In this case, the work efficiency becomes extremely poor, such as an increase in the resin coating step and the curing molding step.
【０００５】ワインド用のシートに低目付のシートを
用いて幾層も巻き付け段差を目立たなくする方法。この
場合、コスト高になるだけでなく薄物を扱うため作業性
が悪いという問題が生じる。[0005] A method in which a low-weight sheet is used as a wind sheet to wind up a plurality of layers to make the step less noticeable. In this case, there arises a problem that not only the cost is increased but also the workability is poor because thin materials are handled.
【０００６】管状物の巻き終端部の外側に段差部を被
覆するようにテープ状プリプレグを重合接着する方法
（特公平５−４４９１０号）。この場合、段差部を被覆
するため、段差は少なくなるものの解消にはならないと
いう問題がある。A method in which a tape-shaped prepreg is polymerized and bonded so as to cover a stepped portion outside a winding end portion of a tubular material (Japanese Patent Publication No. 5-44910). In this case, since the step portion is covered, there is a problem that the step is reduced but not eliminated.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、上述したよ
うな従来技術の問題を解消すべく、管状成形物の凸部を
除去することによる管状物の強度低下、成形における工
程の繁雑さ、材料の取り扱い性等の作業効率の低下を招
くことがないような、管状物の段差防止用材料（プリプ
レグ）を提供することを目的とする。また、段差のない
表面が平滑な、且つ偏肉や層乱れのないＦＲＰ製管状物
を提供することを目的とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention is intended to reduce the strength of a tubular article by removing the convex portion of the tubular article, to complicate the molding process, An object of the present invention is to provide a material (prepreg) for preventing a step of a tubular object, which does not cause a decrease in work efficiency such as handleability of the material. It is another object of the present invention to provide an FRP tubular article having a smooth surface without steps and free from uneven thickness and layer disturbance.
【０００８】[0008]
【課題を解決するための手段】上記目的を鑑みて、本発
明は以下の構成からなる。 （１）織物プリプレグであって、樹脂含有率５０〜９０
ｗｔ％、厚み０．０４〜０．１０ｍｍであることを特徴
と段差防止用プリプレグ。 （２）織物プリプレグの強化繊維が無機または有機繊維
であることを特徴とする請求項１記載の段差防止用プリ
プレグ （３）シートワインド成形により成形された管状体であ
って、最内層、または／および、最外層に請求項１およ
び請求項２記載の段差防止用プリプレグによる層を形成
したことを特徴とする表面が平滑な管状体。 （４）プリプレグシートの端部が管状体の厚さ方向に重
ならないように周方向にずらして積層させるシートワイ
ンド成形法による管状物の成形方法において、該積層さ
せるプリプレグシートの巻回両端部に、幅２〜２０ｍｍ
の請求項１および請求項２記載の段差防止用プリプレグ
を突き合わせるように配すること特徴とする管状体の成
形方法。 （５）プリプレグシートの端部が管状体の厚さ方向に重
ならないように周方向に半周分ずらして積層させるシー
トワインド成形法による管状物の成形方法において、該
積層させるプリプレグシートの巻回両端部に、幅２〜２
０ｍｍの請求項１および請求項２記載の段差防止用プリ
プレグを突き合わせるように配すること特徴とする管状
体の成形方法。 （６）請求項４または５記載の成形法により成形された
表面が平滑な管状体。SUMMARY OF THE INVENTION In view of the above objects, the present invention has the following arrangement. (1) A woven prepreg having a resin content of 50 to 90
A prepreg for preventing a step, wherein the prepreg has a wt% and a thickness of 0.04 to 0.10 mm. (2) The step-preventing prepreg according to claim 1, wherein the reinforcing fiber of the woven prepreg is an inorganic or organic fiber. (3) A tubular body formed by sheet wind molding, wherein the innermost layer or / 3. A tubular body having a smooth surface, wherein a layer made of the step-preventing prepreg according to claim 1 is formed on the outermost layer. (4) In the method of forming a tubular article by a sheet wind molding method in which the ends of the prepreg sheet are laminated while being shifted in the circumferential direction so that the ends of the prepreg sheet do not overlap in the thickness direction of the tubular body, , Width 2-20mm
3. A method for forming a tubular body, comprising arranging the prepregs for preventing steps according to claim 1 and 2 against each other. (5) In a method for forming a tubular article by a sheet wind molding method in which the ends of the prepreg sheet are shifted by half a circumference in the circumferential direction so that the ends of the prepreg sheet do not overlap in the thickness direction of the tubular body, the winding ends of the laminated prepreg sheet In the part, width 2 to 2
3. A method for forming a tubular body, comprising disposing the step-preventing prepreg according to claim 1 to have a diameter of 0 mm. (6) A tubular body having a smooth surface formed by the molding method according to claim 4 or 5.
【０００９】本発明の段差防止用プリプレグは樹脂含有
率５０〜９０ｗｔ％と高含有率であるため、これを配す
ると成形時に樹脂がフローすることにより、プリプレグ
シートの巻始めや、巻き終いの段差部が解消され、表面
が滑らかになるだけでなく、偏肉やシート層の乱れが防
止できる。Since the prepreg for preventing a step according to the present invention has a high resin content of 50 to 90% by weight, the resin flows when it is formed, so that the prepreg sheet starts and ends when the prepreg sheet is wound. The step is eliminated, and not only the surface becomes smooth, but also uneven thickness and disturbance of the sheet layer can be prevented.
【００１０】また、成形物の内面や表面のボイド発生防
止効果もある。さらには、成形物表面の研磨補修が不要
なため強化繊維の切断等もなく機械強度の高い管状物を
も提供することができる。[0010] Further, there is an effect of preventing the occurrence of voids on the inner surface and the surface of the molded product. Further, a tubular article having high mechanical strength can be provided without the need to grind and repair the surface of the molded article and without cutting the reinforcing fibers.
【００１１】[0011]
【本発明の実施の形態】本発明の段差防止用プリプレグ
に用いる織物プリプレグとは、強化繊維織物に硬化剤を
含む樹脂を含浸させたもので、その製法は乾式法や湿式
法と限定するものではないが、樹脂含浸率が高く、寸法
安定性の優れたプリプレグを製造する上でホットメルト
法が好ましい。BEST MODE FOR CARRYING OUT THE INVENTION The woven prepreg used in the prepreg for preventing a step according to the present invention is obtained by impregnating a reinforcing fiber woven fabric with a resin containing a curing agent, and its production method is limited to a dry method or a wet method. However, the hot melt method is preferable for producing a prepreg having a high resin impregnation rate and excellent dimensional stability.
【００１２】本発明における段差防止用プリプレグのマ
トリックス樹脂は、エポキシ樹脂等の熱硬化性樹脂であ
るが、好ましくは、シートワインド成形で用いるプリプ
レグのマトリックス樹脂と同成分の樹脂を用いること
が、一体成形での相溶性の面からよい。The matrix resin of the prepreg for preventing a step in the present invention is a thermosetting resin such as an epoxy resin. Preferably, a resin having the same component as the matrix resin of the prepreg used for sheet wind molding is used. Good in terms of compatibility in molding.
【００１３】本発明の段差防止用プリプレグの樹脂含有
率は５０〜９０ｗｔ％である。５０ｗｔ％未満である
と、成形時の樹脂フローが少なくなり段差防止効果を妨
げる問題が生じる。また９０ｗｔ％超であると、成形時
の樹脂のフローが多くなり炉落ち等の問題を生じる可能
性があり好ましくない。The resin content of the step preventing prepreg of the present invention is 50 to 90 wt%. If the content is less than 50 wt%, the resin flow during molding is reduced, and there is a problem that the step prevention effect is hindered. On the other hand, if the content is more than 90 wt%, the flow of the resin at the time of molding is increased, and there is a possibility that a problem such as a furnace drop may occur.
【００１４】段差防止用プリプレグの厚みは０．０４〜
０．１０ｍｍである。段差防止用プリプレグは、シート
ワインド成形用プリプレグの厚みの段差を防止する補助
材のため、シートワインド成形用プリプレグの厚みより
薄いことが望ましい。段差防止用プリプレグの厚みは
０．０４未満であると、シートが薄過ぎるため段差防止
効果が出にくくなる。また、０．１０ｍｍ超であるとワ
インドするシートより厚くなる場合があり、段差防止を
妨げるため好ましくない。The thickness of the prepreg for preventing step difference is 0.04 to
0.10 mm. The step-preventing prepreg is desirably thinner than the sheet-wind-forming prepreg because it is an auxiliary material for preventing a step in the thickness of the sheet-wind-forming prepreg. If the thickness of the step preventing prepreg is less than 0.04, the sheet is too thin, so that the step preventing effect is hardly obtained. On the other hand, if it is more than 0.10 mm, the sheet may be thicker than the sheet to be wound, which is not preferable because it hinders the prevention of steps.
【００１５】本発明の段差防止用プリプレグに用いる強
化繊維は、炭素繊維、ガラス繊維、アラミド繊維等の強
化繊維が用いられる。また、織物の形態は平織、綾織，
朱子織等の２軸織物が開繊性の面から好ましい。As the reinforcing fibers used in the prepreg for preventing a step according to the present invention, reinforcing fibers such as carbon fibers, glass fibers, and aramid fibers are used. In addition, the form of the fabric is plain weave, twill weave,
A biaxial woven fabric such as satin weave is preferred from the viewpoint of openability.
【００１６】本発明のプリプレグシートの端部とは、管
状体の軸方向に延びる巻始め及び巻終いの端部をいう。
プリプレグシートは管状体の厚さ方向に重ならないよう
に周方向にずらして積層し、ずらし具合は積層枚数にも
よるが、周方向に半周分、１／３周分等、プリプレグを
積層・巻回した管状体の断面が断面中心に対称になるよ
うにずらすことが管状体の段差や偏肉を抑制するために
好ましい。The ends of the prepreg sheet of the present invention are the ends of the start and end of the tubular body that extend in the axial direction.
The prepreg sheets are laminated while being shifted in the circumferential direction so that they do not overlap in the thickness direction of the tubular body. Depending on the number of sheets to be shifted, the prepreg sheets may be stacked and wound in half or one-third of the circumference in the circumferential direction. It is preferable to shift the cross section of the turned tubular body so as to be symmetrical with respect to the center of the section in order to suppress the step and uneven thickness of the tubular body.
【００１７】また、バイアスプリプレグを積層する場合
は、半周ずらすことが好ましく、特にバイアスプリプレ
グの上に一方向プリプレグを巻き付ける場合は、バイア
スシート巻き終い端部に連続してまたは半周ずらして巻
き付けることが対称性の点で好ましい。但し、ＵＤ層を
複数分割して巻き付ける場合は１／３、１／４周ずらし
て段差を最小限にする。When laminating the bias prepregs, it is preferable to shift the prepregs by half a turn. In particular, when winding the unidirectional prepregs on the bias prepregs, the prepregs should be continuously or half-shifted around the end end of the bias sheet winding. Is preferred in terms of symmetry. However, when the UD layer is divided into a plurality of pieces and wound, the steps are shifted by ３ or 周 to minimize the level difference.
【００１８】次に、本発明の段差防止用プリプレグを用
いたシートワインド成形による管状体の成形方法につい
て説明する。Next, a method for forming a tubular body by sheet wind molding using the prepreg for preventing a step according to the present invention will be described.
【００１９】本発明の段差防止用プリプレグを用いる成
形方法は、段差防止用プリプレグを（１）パターンカッ
トしたものを最内層、最外層、または両層に用いる場
合、（２）スリットテープ状のプリプレグを用いる場
合、（３）中間層に部分的に用いる場合、等がある。な
お、本発明の段差防止用プリプレグを用いたシートワイ
ンド成形による管状体の成形方法はこれらの場合に限定
するものではない。The molding method using the step-preventing prepreg according to the present invention comprises: (1) a step-preventing prepreg which is cut in a pattern and used as the innermost layer, the outermost layer, or both layers; (2) a slit tape-shaped prepreg; Is used, and (3) a case where the intermediate layer is partially used. The method for forming a tubular body by sheet wind molding using the prepreg for preventing a step according to the present invention is not limited to these cases.
【００２０】各成形方法について説明する。Each molding method will be described.
【００２１】（１）の成形方法は、まず本発明の段差防
止用プリプレグを最内層、最外層の１ｐｌｙ長にパター
ンカットしたものを用意し、マンドレルに最内層用段差
防止用プリプレグを巻き付ける。次に、中間層のプリプ
レグシートを必要分巻き付ける。ここで、中間層は成形
物の用途に応じ、バイアスプリプレグや一方向性プリプ
レグを単独または組合わせて用いることができる。例え
ばゴルフシャフトの場合は、中間層（内側）バイアスプ
リプレグと中間層（外側）一方向性プリプレグを組合わ
せて用いるのが適している。また、釣竿の場合は中間層
に一方向性プリプレグを用いることが適する。一方向性
プリプレグを巻き付けた後、最外層用段差防止用プリプ
レグを巻き付ける。このとき、最内層および最外層は１
ｐｌｙ長にカットしたものなので、端部は突き合わせと
なる。最後にテープ状収縮フィルムを螺旋状に巻き付
け、加熱硬化させ、放冷後テープ状収縮フィルムをはが
し管状体を得る。図１は（１）成形法により作製した管
状体の断面図である。最内層1と最外層2に段差防止用プ
リプレグを配して成形したため、管状物の表面は平滑と
なる。In the molding method (1), first, the step prevention prepreg of the present invention is prepared by pattern-cutting the innermost layer and the outermost layer into a 1 ply length, and the innermost layer step prevention prepreg is wound around a mandrel. Next, the prepreg sheet of the intermediate layer is wound as required. Here, as the intermediate layer, a bias prepreg or a unidirectional prepreg can be used alone or in combination depending on the use of the molded product. For example, in the case of a golf shaft, it is suitable to use a combination of an intermediate layer (inside) bias prepreg and an intermediate layer (outside) unidirectional prepreg. In the case of a fishing rod, it is suitable to use a unidirectional prepreg for the intermediate layer. After winding the unidirectional prepreg, the outermost layer step preventing prepreg is wound. At this time, the innermost layer and the outermost layer are 1
Since it is cut to the ply length, the ends are abutted. Finally, the tape-shaped shrinkable film is spirally wound, cured by heating, and allowed to cool. Then, the tape-shaped shrinkable film is peeled off to obtain a tubular body. FIG. 1 is a cross-sectional view of the tubular body produced by the (1) molding method. Since the step preventing prepreg is arranged on the innermost layer 1 and the outermost layer 2 and molded, the surface of the tubular article becomes smooth.
【００２２】（２）の成形方法は、段差用プリプレグの
スリット状テープをマンドレルに螺旋状にオーバーラッ
プしないように巻き付ける。スリット状テープの幅は２
〜２０ｍｍの範囲で一定幅のものが好ましい。次に、中
間層のプリプレグシートを必要分巻き付ける。ここで、
中間層は成形物の用途に応じ、バイアスプリプレグや一
方向性プリプレグを単独または組合わせて用いることが
できる。中間層を巻き付けた後、最外層に段差防止用プ
リプレグのスリット状テープを螺旋状にオーバーラップ
しないように巻き付ける。最後にテープ状収縮フィルム
を螺旋状に巻き付け、加熱硬化させ、放冷後テープ状収
縮フィルムをはがし、管状体を得る。In the forming method (2), the slit tape of the step prepreg is wound around the mandrel so as not to spirally overlap. The width of the slit tape is 2
Those having a constant width in the range of ２０20 mm are preferred. Next, the prepreg sheet of the intermediate layer is wound as required. here,
As the intermediate layer, a bias prepreg or a unidirectional prepreg can be used alone or in combination depending on the use of the molded product. After the intermediate layer is wound, a slit tape of a prepreg for preventing a step is wound around the outermost layer so as not to overlap spirally. Finally, the tape-shaped shrink film is spirally wound, heated and cured, and allowed to cool, and then the tape-shaped shrink film is peeled off to obtain a tubular body.
【００２３】（３） 図２は（３）の成形方法を用いる
場合の展開図である。この成形方法は、まず、段差防止
用プリプレグのスリット状テープ6をマンドレル11に軸
方向に貼り付け、次いでバイアスプリプレグ層9、一方
向性プリプレグ層10を順に積層しマンドレルに巻き付け
る。ここでは中間層はバイアスプリプレグ層9および一
方向性プリプレグ層10である。その後、最外層に段差防
止用ブリプレグを、１ｐｌｙ相当長にパターンカットし
たものの場合は上述の成形方法（１）、スリット状テー
プをの場合は成形方法（２）の要領で巻付ける。最後に
テープ状収縮フィルムを螺旋状に巻き付け加熱硬化さ
せ、放冷後テープ状収縮フィルムをはがし、管状体を得
る方法である。(3) FIG. 2 is a development view when the molding method of (3) is used. In this molding method, first, a slit-shaped tape 6 of a prepreg for preventing a step is stuck on a mandrel 11 in an axial direction, and then a bias prepreg layer 9 and a unidirectional prepreg layer 10 are sequentially laminated and wound around the mandrel. Here, the intermediate layers are a bias prepreg layer 9 and a unidirectional prepreg layer 10. Thereafter, the step-preventing prepreg is wound around the outermost layer in the same manner as in the molding method (1) described above in the case of a pattern cut to a length of 1 ply, and in the case of a slit tape, in the manner described in the molding method (2). Finally, the tape-shaped shrink film is spirally wound and heated and cured, and after cooling, the tape-shaped shrink film is peeled off to obtain a tubular body.
【００２４】特徴とするところは予め作製しておくバイ
アスプリプレグ層9や一方向性プリプレグ層10の各層に
おいて、構成するプリプレグシートの端部に段差防止用
プリプレグのスリット状テープ（7、8）を付き合わせる
ように配置しておくことである。また、バイアスプリプ
レグ層と一方向性プリプレグ層の順序や交互に積層する
等の組合わせは管状体の設計条件により、適宜選択でき
る。段差防止用プリプレグを配したシートを巻付け硬化
するため、段差防止用プリプレグの樹脂がフローし、点
線で示す三角部に樹脂が廻りシート段差が微少になり、
段差部でのシートの乱れが防止できるものとなる。Characteristically, in each of the bias prepreg layer 9 and the unidirectional prepreg layer 10 which are prepared in advance, a slit-shaped tape (7, 8) of a prepreg for preventing a step is provided at an end of a prepreg sheet to be constituted. It is to arrange so that they may associate. The combination of the bias prepreg layer and the unidirectional prepreg layer, such as the order and alternate lamination, can be appropriately selected depending on the design conditions of the tubular body. In order to wind and cure the sheet on which the prepreg for preventing steps is wound and hardened, the resin of the prepreg for preventing steps flows, and the resin turns around the triangular portion indicated by the dotted line, and the sheet step becomes small,
The disturbance of the sheet at the step can be prevented.
【００２５】図３、図４は（３）の成形方法を用いる場
合の他の展開図の一例である。図５は、図３の展開図に
より成形した管状体の中間層の概略断面図である。FIGS. 3 and 4 are examples of other developments when the molding method (3) is used. FIG. 5 is a schematic cross-sectional view of the intermediate layer of the tubular body formed according to the developed view of FIG.
【００２６】このようにして成形された管状体表面は段
差が無く偏肉やシート層の乱れのないため、表面状態が
極めて平滑な成形物がが得られる。本発明でいう表面が
平滑な成形物とは、プリプレグシートの巻始め巻き終い
の影響による管状体の軸方向にのびる段差があらわれな
い成形物をいう。なお、成形方法はこれらに限定するも
のではなく、これらの成形方法を組合せて用いたり、応
用して用いることが可能である。Since the surface of the thus formed tubular body has no steps and no uneven thickness and no disturbance of the sheet layer, a molded product having an extremely smooth surface can be obtained. The molded product having a smooth surface in the present invention means a molded product in which a step extending in the axial direction of the tubular body due to the influence of the beginning and end of winding of the prepreg sheet does not appear. Note that the molding method is not limited to these, and these molding methods can be used in combination or applied.
【００２７】[0027]
【実施例】（実施例１） 段差防止用プリプレグの製造 ビスフェノールＡ系エポキシ樹脂を主成分とする樹脂フ
ィルム上に、経糸、緯糸がガラス繊維からなる平織物
（繊維重量：２４g/m2）を重ね合わせ、約80℃で加熱加
圧し、織物プリプレグを得た。この織物プリプレグの樹
脂含有率は７０％、厚みは０．０８ｍｍであった。EXAMPLES Example 1 Production of Prepreg for Preventing Steps On a resin film containing bisphenol A-based epoxy resin as a main component, a plain woven fabric (fiber weight: 24 g / m 2 ) composed of glass fibers of warp and weft is used. They were superposed and heated and pressed at about 80 ° C. to obtain a woven prepreg. This woven prepreg had a resin content of 70% and a thickness of 0.08 mm.
【００２８】（実施例２） 成形方法（１）の場合 実施例１で得た段差防止用プリプレグ（厚み：０．０８
ｍｍ、樹脂含有率：７０％）をマンドレルに１ｐｌｙ巻
回する。その上に炭素繊維からなるエポキシ樹脂系一方
向プリプレグ（炭素繊維：ベスファイトＨＴＡ−２４Ｋ
((東邦レーヨン製))、繊維目付125g/m2、ＲＣ 30%、厚
さ 0.115mm）を２ｐｌｙ相当になるように繊維軸に対し
＋４５゜、-４５°方向に裁断し、マンドレルに対し半
周ずらし±４５゜となるように貼り合わせ、巻回する。
更に、一方向プリプレグの繊維方向をマンドレル軸に沿
うように３ｐｌｙ巻回させる。最外層には実施例１で得
た段差防止用プリプレグを１ｐｌｙ巻回し、収縮テープ
にてテーピングし、加熱硬化を行った。出来上がった管
状体は、周方向でのプリプレグの巻端部により段差は無
く、ボイド傷のない表面状態が極めて平滑な成形物を得
た。(Example 2) In the case of the molding method (1) The prepreg for preventing a level difference obtained in Example 1 (thickness: 0.08)
mm, resin content: 70%) around the mandrel. An epoxy resin-based unidirectional prepreg made of carbon fiber (carbon fiber: Vesfite HTA-24K)
((Toho Rayon)), fiber weight 125g / m 2 , RC 30%, thickness 0.115mm) is cut in + 45 ° and -45 ° directions to the fiber axis so as to be equivalent to 2 ply, and it is a half circumference to the mandrel Paste and wind so that the displacement is ± 45 °.
Furthermore, 3 ply winding is performed so that the fiber direction of the unidirectional prepreg is along the mandrel axis. On the outermost layer, the step-preventing prepreg obtained in Example 1 was wound 1 ply, taped with a shrink tape, and heat-cured. The finished tubular body did not have a step due to the winding end portion of the prepreg in the circumferential direction, and a molded product having a very smooth surface without any void damage was obtained.
【００２９】（実施例３） 成形方法（１）（２）
（３）を組み合わせた場合 ＜最外層に１ply、最内層にスリットテープ、中間層端
部にスリットテープを用いる例＞実施例１で得た段差防
止用プリプレグ（厚み：０．０８ｍｍ、樹脂含有率：７
０％）を、幅８ｍｍのスリット状テープに切断したもの
を、マンドレルに螺旋状に隙間なく巻き付け最内層とし
た。次いで、炭素繊維からなるエポキシ樹脂系一方向プ
リプレグ（炭素繊維：ベスファイトＨＴＡ−２４Ｋ((東
邦レーヨン製))、繊維目付125g/m2、ＲＣ30%、厚さ0.11
5mm）の±４５°層を２ｐｌｙ分パターンカットしたも
のと、炭素繊維からなるエポキシ樹脂系一方向プリプレ
グ（炭素繊維：ベスファイトＨＴＡ−２４Ｋ((東邦レー
ヨン製))、繊維目付100g/m2、ＲＣ30%、厚さ0.092mm）
の０°層３ｐｌｙ分パターンカットしたものをマンドレ
ルに対し半周分ずれるように積層し、±４５°層の巻終
い端部と０°層の巻始め端部に、実施例１で得た段差防
止用プリプレグを幅８ｍｍにしたスリット状プリプレグ
を突き合わせるように配置し、先のスリット状テープが
巻付けられているマンドレルにこの積層されたプリプレ
グをバイアス層が内側になるように巻付ける。次いで、
実施例１で得た段差防止用プリプレグを１ｐｌｙ分パタ
ーンカットしたものを０°層のプリプレグと突合わせる
よう配置し巻き付け、収縮テープにてテーピングし、加
熱硬化を行った。出来上がった管状体は、周方向でのプ
リプレグの巻端部により段差は無く、ボイド傷のない表
面状態が極めて平滑な成形物を得た。(Example 3) Forming method (1) (2)
When (3) is combined <Example in which 1 ply is used for the outermost layer, a slit tape is used for the innermost layer, and a slit tape is used for the end portion of the intermediate layer> The prepreg for preventing step difference obtained in Example 1 (thickness: 0.08 mm, resin content) : 7
0%) was cut into a slit-shaped tape having a width of 8 mm and spirally wound around a mandrel without a gap to form an innermost layer. Next, an epoxy resin unidirectional prepreg made of carbon fiber (carbon fiber: Vesfight HTA-24K (manufactured by Toho Rayon)), fiber weight 125 g / m 2 , RC 30%, thickness 0.11
5 mm) ± 45 ° layer cut by 2 ply pattern, epoxy resin unidirectional prepreg made of carbon fiber (carbon fiber: Vesfite HTA-24K ((Toho Rayon)), fiber weight 100 g / m 2 , RC30%, thickness 0.092mm)
The pattern cut by 3 ply of the 0 ° layer is laminated so as to be shifted by half a circle with respect to the mandrel, and the step difference obtained in Example 1 is provided at the winding end of the ± 45 ° layer and the winding start end of the 0 ° layer. The prevention prepreg is arranged so as to abut a slit-shaped prepreg having a width of 8 mm, and the laminated prepreg is wound around the mandrel around which the slit tape is wound so that the bias layer is on the inside. Then
The step-preventing prepreg obtained in Example 1 was pattern-cut by 1 ply, placed so as to abut against a 0 ° layer prepreg, wound, taped with a shrink tape, and heat-cured. The finished tubular body did not have a step due to the winding end portion of the prepreg in the circumferential direction, and a molded product having a very smooth surface without any void damage was obtained.
【００３０】[0030]
【発明の効果】本発明によれば、プリプレグシートの巻
始めや、巻き終いの段差部が解消された表面が平滑な管
状体を研磨補修や樹脂塗装に頼らずに提供できる。ま
た、偏肉やシート層の乱れが防止でき、成形物の内面や
表面のボイド発生がないの機械的特性に優れた管状体が
得られる。According to the present invention, it is possible to provide a tubular body having a smooth surface in which a step portion at the beginning and end of winding of a prepreg sheet is eliminated without relying on polishing and repair or resin coating. In addition, it is possible to prevent uneven thickness and disturbance of the sheet layer, and to obtain a tubular body having no mechanical voids on the inner surface or the surface of the molded product and having excellent mechanical properties.
【図１】本発明による管状体の断面図FIG. 1 is a sectional view of a tubular body according to the present invention.
【図２】本発明による管状体の展開図FIG. 2 is an expanded view of a tubular body according to the present invention.
【図３】本発明による管状体の展開図FIG. 3 is a development view of a tubular body according to the present invention.
【図４】本発明による管状体の展開図FIG. 4 is an expanded view of a tubular body according to the present invention.
【図５】本発明による管状体の中間層部分の断面図。FIG. 5 is a sectional view of an intermediate layer portion of the tubular body according to the present invention.
１：最内層 ２：最外層 ３：中間層（内側） ４：中間層（外側） ５：突き合わせ端部 ６、７，８，１２：段差防止用プリプレグ ９：中間層（バイアス層） １０：中間層（一方向性層） １１：マンドレル 1: innermost layer 2: outermost layer 3: intermediate layer (inside) 4: intermediate layer (outside) 5: butt end portion 6, 7, 8, 12: prepreg for preventing step difference 9: intermediate layer (bias layer) 10: intermediate Layer (unidirectional layer) 11: Mandrel
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２９Ｌ 23:00 Ｃ０８Ｌ 63:00 Ｃ０８Ｌ 63:00 Ｂ２９Ｃ 67/14 Ｂ Ｆターム(参考） 3H111 AA01 BA15 BA34 CA03 CB05 CB14 CB29 DA26 DB19 DB27 EA17 4F072 AA04 AA07 AB02 AB09 AB10 AB28 AD28 AG03 AG16 AG20 AG22 AH06 AJ01 AJ04 AK02 AK05 AK11 AL03 4F205 AA36 AD16 AD18 AD19 AD25 AG08 HA02 HA23 HA33 HA35 HA45 HB01 HC02 HC05 HC14 HC16 HC17 HG03 HG05 HK04 HK05 HL02 HL12 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B29L 23:00 C08L 63:00 C08L 63:00 B29C 67/14 B F-term (Reference) 3H111 AA01 BA15 BA34 CA03 CB05 CB14 CB29 DA26 DB19 DB27 EA17 4F072 AA04 AA07 AB02 AB09 AB10 AB28 AD28 AG03 AG16 AG20 AG22 AH06 AJ01 AJ04 AK02 AK05 AK11 AL03 4F205 AA36 AD16 AD18 AD19 AD25 AG08 HA02 HA23 HA33 HA35 HC05 HC04 HC05 HC05 HC05 HC05 HC
Claims (6)
〜９０ｗｔ％、厚み０．０４〜０．１０ｍｍであること
を特徴と段差防止用プリプレグ。1. A woven prepreg, having a resin content of 50.
A prepreg for preventing a step, wherein the prepreg has a thickness of 0.04 to 90 wt% and a thickness of 0.04 to 0.10 mm.
機繊維であることを特徴とする請求項１記載の段差防止
用プリプレグ2. The step-preventing prepreg according to claim 1, wherein the reinforcing fibers of the woven prepreg are inorganic or organic fibers.
体であって、最内層、または／および、最外層に請求項
１または請求項２記載の段差防止用プリプレグによる層
を形成したことを特徴とする表面が平滑な管状体。3. A tubular body formed by sheet wind molding, wherein a layer made of the step-preventing prepreg according to claim 1 or 2 is formed on the innermost layer and / or the outermost layer. A tubular body with a smooth surface.
向に重ならないように周方向にずらして積層させるシー
トワインド成形法による管状物の成形方法において、該
積層させるプリプレグシートの巻回両端部に、幅２〜２
０ｍｍの請求項１および請求項２記載の段差防止用プリ
プレグを突き合わせるように配すること特徴とする管状
体の成形方法。4. A method for forming a tubular article by a sheet wind molding method in which the ends of a prepreg sheet are laminated while being shifted in the circumferential direction so as not to overlap in the thickness direction of the tubular body. In the part, width 2 to 2
3. A method for forming a tubular body, comprising disposing the step-preventing prepreg according to claim 1 to have a diameter of 0 mm.
向に重ならないように周方向に半周分ずらして積層させ
るシートワインド成形法による管状物の成形方法におい
て、該積層させるプリプレグシートの巻回両端部に、幅
２〜２０ｍｍの請求項１および請求項２記載の段差防止
用プリプレグを突き合わせるように配すること特徴とす
る管状体の成形方法。5. A method for forming a tubular article by a sheet wind molding method in which the ends of the prepreg sheets are shifted by half a circumference in a circumferential direction so that the ends of the prepreg sheets do not overlap in the thickness direction of the tubular body. 3. A method for forming a tubular body, comprising: arranging the prepreg for preventing a step according to claim 1 having a width of 2 to 20 mm at both ends of the turn.
された表面が平滑な管状体。6. A tubular body having a smooth surface formed by the molding method according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000330059A JP2002128921A (en) | 2000-10-30 | 2000-10-30 | Prepreg for preventing different levels, manufacturing method of tubular body using the same and tubular body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000330059A JP2002128921A (en) | 2000-10-30 | 2000-10-30 | Prepreg for preventing different levels, manufacturing method of tubular body using the same and tubular body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002128921A true JP2002128921A (en) | 2002-05-09 |
Family
ID=18806639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000330059A Pending JP2002128921A (en) | 2000-10-30 | 2000-10-30 | Prepreg for preventing different levels, manufacturing method of tubular body using the same and tubular body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002128921A (en) |
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|---|---|---|---|---|
| JP2015534912A (en) * | 2012-10-22 | 2015-12-07 | アッシュ・ウー・エフ | Self-lubricating articulation elements made of composite materials and operation under high dynamic loads |
| WO2016147646A1 (en) * | 2015-03-19 | 2016-09-22 | 東レ株式会社 | Sheet-shaped reinforced fiber substrate, preform, and fiber reinforced plastic molded article |
| CN107614579A (en) * | 2015-05-22 | 2018-01-19 | 株式会社神户制钢所 | Banding prepreg and fibre strengthening formed body |
| JP2019193979A (en) * | 2018-05-01 | 2019-11-07 | 藤倉コンポジット株式会社 | Frp cylinder and method for producing the same |
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2000
- 2000-10-30 JP JP2000330059A patent/JP2002128921A/en active Pending
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| JP2015534912A (en) * | 2012-10-22 | 2015-12-07 | アッシュ・ウー・エフ | Self-lubricating articulation elements made of composite materials and operation under high dynamic loads |
| RU2719817C2 (en) * | 2015-03-19 | 2020-04-23 | Торэй Индастриз, Инк. | Sheet base material from reinforcing fiber, workpiece and molded product from fiber-reinforced resin |
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| JPWO2016147646A1 (en) * | 2015-03-19 | 2017-12-28 | 東レ株式会社 | Sheet-like reinforced fiber substrate, preform, and fiber-reinforced resin molded product |
| US10493657B2 (en) | 2015-03-19 | 2019-12-03 | Toray Industries, Inc. | Sheet-like reinforcing fiber base material, preform and fiber-reinforced resin molded product |
| WO2016147646A1 (en) * | 2015-03-19 | 2016-09-22 | 東レ株式会社 | Sheet-shaped reinforced fiber substrate, preform, and fiber reinforced plastic molded article |
| KR102496240B1 (en) | 2015-03-19 | 2023-02-06 | 도레이 카부시키가이샤 | Sheet-like reinforced fiber substrates, preforms, and fiber-reinforced resin molded products |
| CN107614579A (en) * | 2015-05-22 | 2018-01-19 | 株式会社神户制钢所 | Banding prepreg and fibre strengthening formed body |
| EP3299408A4 (en) * | 2015-05-22 | 2018-10-31 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Tape-shaped prepreg and fiber-reinforced molded object |
| CN107614579B (en) * | 2015-05-22 | 2021-02-19 | 株式会社神户制钢所 | Tape-shaped prepreg and fiber-reinforced molded article |
| JP2019193979A (en) * | 2018-05-01 | 2019-11-07 | 藤倉コンポジット株式会社 | Frp cylinder and method for producing the same |
| WO2020026795A1 (en) | 2018-07-30 | 2020-02-06 | 株式会社豊田自動織機 | Frp tubular body and method for manufacturing frp tubular body |
| JPWO2020026795A1 (en) * | 2018-07-30 | 2021-08-02 | 株式会社豊田自動織機 | Manufacturing method of FRP tubular body and FRP tubular body |
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