JPH09262832A - Prepreg - Google Patents
PrepregInfo
- Publication number
- JPH09262832A JPH09262832A JP9764396A JP9764396A JPH09262832A JP H09262832 A JPH09262832 A JP H09262832A JP 9764396 A JP9764396 A JP 9764396A JP 9764396 A JP9764396 A JP 9764396A JP H09262832 A JPH09262832 A JP H09262832A
- Authority
- JP
- Japan
- Prior art keywords
- prepreg
- layer
- weight
- fiber
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、強化繊維とマトリ
ックス樹脂とを含むプリプレグに関する。さらに詳しく
は、巻き付け作業性にすぐれた、低樹脂含有率で軽量、
高強度の、とくにＦＲＰ管状体成形用に用いて好適なプ
リプレグに関するものである。TECHNICAL FIELD The present invention relates to a prepreg containing reinforcing fibers and a matrix resin. More specifically, it has excellent winding workability, low resin content and light weight,
The present invention relates to a prepreg having high strength, which is suitable for forming a FRP tubular body.
【０００２】[0002]
【従来の技術】繊維強化プリプレグは、ゴルフシャフ
ト、釣竿、バトミントンシャフトやテニスラケットのフ
レームなどの成形品の中間素材として、スポーツ、レジ
ャー用途に広く利用されるようになってきている。近
年、ゴルフシャフト、釣竿などでさらに軽量化するため
に、樹脂含有率の低いプリプレグが開発されてきてい
る。2. Description of the Related Art Fiber-reinforced prepregs have been widely used in sports and leisure applications as intermediate materials for molded articles such as golf shafts, fishing rods, badminton shafts and tennis racket frames. In recent years, prepregs having a low resin content have been developed in order to further reduce the weight of golf shafts, fishing rods, and the like.
【０００３】繊維強化プリプレグを使用し管状体成形物
を作る際には、たとえば、プリプレグを強化繊維配向方
向が９０度の角度で交差するように積層し、芯体に貼り
付け、重ね巻きし加熱、硬化させて目的の成形品を得
る。その際のプリプレグの強化繊維は、管状体の軸方向
や周方向に沿って配置され、軸方向に延びる繊維は管状
体の主として曲げ強さを担い、周方向に延びる繊維は主
として管状体の潰れを防止する役目をする。通常軽量化
のために、周方向の繊維の量は必要最小限にとどめるの
で、使用するプリプレグとしては軸方向に使用するプリ
プレグよりも小さい繊維目付のものを通常使用する。そ
のため、その周方向用プリプレグは薄く破損しやすいの
で、予め軸方向に使用するプリプレグに貼り付けたもの
を用いている。これをプリプライドプリプレグと称し、
この形態で商品化されている。When a tubular molded product is produced using a fiber-reinforced prepreg, for example, the prepregs are laminated so that the orientation directions of the reinforcing fibers intersect at an angle of 90 degrees, and the prepreg is attached to a core body, and the core body is wrapped and heated. Then, it is cured to obtain the desired molded product. The reinforcing fibers of the prepreg at that time are arranged along the axial direction or the circumferential direction of the tubular body, the fibers extending in the axial direction mainly bear the bending strength of the tubular body, and the fibers extending in the circumferential direction mainly collapse the tubular body. To prevent this. Usually, in order to reduce the weight, the amount of fibers in the circumferential direction is kept to a necessary minimum, so that the prepreg to be used is usually one having a fiber basis weight smaller than that of the prepreg used in the axial direction. Therefore, since the circumferential prepreg is thin and easily damaged, the prepreg used in advance in the axial direction is used. This is called a prepreg prepreg,
It is commercialized in this form.
【０００４】上記のようなプリプライドプリプレグで
は、使用するプリプレグ材が樹脂含有率の低いものであ
る場合には、プリプレグ材の表面の樹脂量が少ないため
接着力が不足し、部分的にプリプレグ材同士が剥がれる
ことがある。樹脂含有率の高い繊維強化プリプレグ材で
は樹脂が多いためプリプレグ材同士の接着性は良く、こ
のような問題はほとんど発生しない。このような剥離が
発生した繊維強化プリプレグを芯体に巻き付けると、皺
が発生したり、繊維乱れが発生する原因となり、得られ
る成形品の強度低下や品位不良等の問題を招く。そのた
めに、管状体の軸方向に使用するプリプレグは軽量化で
きても、管状体の周方向に使用するプリプレグは樹脂含
有率を低くできなかった。また、小さい繊維目付のプリ
プレグを製造する際には、樹脂含有率が低いと強化繊維
の糸拡げが困難であり、均一で平滑なプリプレグができ
ないという問題もあった。In the prepreg prepreg as described above, when the prepreg material to be used has a low resin content, the adhesive force is insufficient due to the small amount of resin on the surface of the prepreg material, and the prepreg material is partially They may come off. Since the fiber-reinforced prepreg material having a high resin content contains a large amount of resin, the adhesiveness between the prepreg materials is good, and such a problem hardly occurs. When the fiber-reinforced prepreg in which such peeling has occurred is wound around the core body, it causes wrinkles and fiber disorder, which causes problems such as reduction in strength and poor quality of the obtained molded product. Therefore, even though the prepreg used in the axial direction of the tubular body can be made lightweight, the prepreg used in the circumferential direction of the tubular body cannot reduce the resin content. In addition, when producing a prepreg having a small fiber weight, if the resin content is low, it is difficult to spread the reinforcing fibers, and there is a problem that a uniform and smooth prepreg cannot be obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記の問題点
に鑑みてなされたもので、プリプレグ材同士の剥がれの
ない、取扱い性良好な樹脂含有率の低いプリプレグを提
供し、一層軽量化されたＦＲＰ管状体の成形を可能にす
ることを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a prepreg having a low resin content, which is easy to handle, with no peeling between prepreg materials, and is further reduced in weight. The purpose is to enable the molding of a FRP tubular body.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明のプリプレグは、強化繊維とマトリックス樹
脂とを含む２層構成のプリプレグであって、第１の層が
繊維目付５０〜３００ｇ／ｍ2 、樹脂含有率１３〜２７
重量％の範囲にあり、第２の層が繊維目付５〜５０ｇ／
ｍ2 、樹脂含有率１７〜３３重量％の範囲にあり、第１
の層における強化繊維と第２の層における強化繊維とが
８５〜９０度の範囲の角度で、好ましくは８８〜９０度
の範囲の角度で交差するように積層されていることを特
徴とするものからなる。In order to solve the above problems, the prepreg of the present invention is a prepreg having a two-layer structure containing reinforcing fibers and a matrix resin, and the first layer has a fiber basis weight of 50 to 300 g. / M 2 , resin content rate 13 to 27
The weight ratio is in the range, and the second layer has a fiber areal weight of 5 to 50 g /
m 2 , the resin content is in the range of 17 to 33% by weight,
The reinforcing fibers in the layer and the reinforcing fibers in the second layer are laminated so as to intersect at an angle in the range of 85 to 90 degrees, preferably at an angle in the range of 88 to 90 degrees. Consists of.
【０００７】[0007]
【発明の実施の形態】本発明のプリプレグは、強化繊維
とマトリックス樹脂とを含むプリプレグ材が８５〜９０
度の範囲の交差角で、好ましくは８８〜９０度の範囲の
交差角で積層されている２層構造からなる。BEST MODE FOR CARRYING OUT THE INVENTION In the prepreg of the present invention, a prepreg material containing reinforcing fibers and a matrix resin is 85-90.
It consists of a two-layer structure laminated at an intersection angle in the range of degrees, preferably in the range of 88 to 90 degrees.
【０００８】本発明において用いられる強化繊維として
は、ガラス繊維、アラミド繊維、金属繊維、炭素繊維な
どを例示できるが、成形品となした場合に、とくに優れ
た機械的特性と軽量化効果を示すことから炭素繊維や黒
鉛繊維を用いることが好ましい。炭素繊維や黒鉛繊維と
しては、ポリアクリロニトリル系やピッチ系などの炭素
繊維や黒鉛繊維を用いることができる。Examples of the reinforcing fiber used in the present invention include glass fiber, aramid fiber, metal fiber, carbon fiber and the like, but when formed into a molded product, they exhibit particularly excellent mechanical properties and a weight saving effect. Therefore, it is preferable to use carbon fiber or graphite fiber. As the carbon fiber or graphite fiber, polyacrylonitrile-based or pitch-based carbon fiber or graphite fiber can be used.
【０００９】また、本発明において用いられるマトリッ
クス樹脂としては、熱可塑性樹脂や熱硬化性樹脂が用い
られるが好適にはエポキシ樹脂が使用できる。エポキシ
樹脂としては、例えばビスフェノールＡ型エポキシ樹
脂、フェノールノボラック型エポキシ樹脂、クレゾール
ノボラック型エポキシ樹脂、グリシジルアミン型エポキ
シ樹脂、脂環式エポキシ樹脂、ウレタン変性エポキシ樹
脂、ブロム化ビスフェノールＡ型エポキシ樹脂など各種
のエポキシ樹脂を使用することができる。これらのエポ
キシ樹脂は、単独または２種類以上を併用して使用する
ことができ、さらに液状のものから固体状のものまで使
用することができる。通常、エポキシ樹脂には硬化剤が
加えられている一液硬化型のものが用いられることが多
い。硬化剤としてはとくに限定されるものではないが保
存性の面で潜在型の硬化剤が好ましい。潜在型の硬化剤
の例としてはジシアンジアミド等のグアニジン系のもの
が好適に使用される。Further, as the matrix resin used in the present invention, a thermoplastic resin or a thermosetting resin is used, but an epoxy resin can be preferably used. Examples of the epoxy resin include bisphenol A type epoxy resin, phenol novolac type epoxy resin, cresol novolac type epoxy resin, glycidyl amine type epoxy resin, alicyclic epoxy resin, urethane modified epoxy resin, and brominated bisphenol A type epoxy resin. Epoxy resin can be used. These epoxy resins can be used alone or in combination of two or more kinds, and can be used in liquid form to solid form. Usually, a one-component curing type epoxy resin to which a curing agent is added is often used. The curing agent is not particularly limited, but a latent type curing agent is preferable in terms of storability. As an example of the latent curing agent, a guanidine-based curing agent such as dicyandiamide is preferably used.
【００１０】本発明のプリプレグにおいては、第１の層
は、その繊維配向方向を管状体の軸方向に沿う方向に配
する層として好適であり、第２の層は、その繊維配向方
向を管状体の周方向に沿う方向に配する層として好適で
ある。In the prepreg of the present invention, the first layer is suitable as a layer whose fiber orientation direction is arranged along the axial direction of the tubular body, and the second layer has a fiber orientation direction thereof which is tubular. It is suitable as a layer arranged in the direction along the circumferential direction of the body.
【００１１】本発明のプリプレグにおける第１の層に用
いるプリプレグ材の繊維目付は５０〜３００ｇ／ｍ2 の
範囲にあり、好ましくは８０〜２５０ｇ／ｍ2 、さらに
好ましくは１００〜２００ｇ／ｍ2 の範囲にある。樹脂
含有率は１３〜２７重量％の範囲にあり、好ましくは１
５〜２５重量％、さらに好ましくは１７〜２３重量％の
範囲のものである。繊維目付が５０ｇ／ｍ2 未満では、
管状体の軸方向に必要量の繊維を提供するためには多数
回巻き付けなければならず、円周方向に使用するプリプ
レグの量が増えて成形体の重量が増し好ましくない。３
００ｇ／ｍ2 を越える場合には、プリプレグの製造の際
に繊維量が多すぎて樹脂の含浸斑が起き、良好な品質、
品位のプリプレグとすることができない。[0011] Fibers basis weight of the prepreg material used for the first layer in the prepreg of the present invention is in the range of 50 to 300 g / m 2, preferably 80~250g / m 2, more preferably from 100 to 200 g / m 2 In range. The resin content is in the range of 13 to 27% by weight, preferably 1
It is in the range of 5 to 25% by weight, more preferably 17 to 23% by weight. When the fiber areal weight is less than 50 g / m 2 ,
In order to provide the required amount of fibers in the axial direction of the tubular body, a large number of windings are required, and the amount of prepreg used in the circumferential direction increases, which unfavorably increases the weight of the molded body. 3
If it exceeds 00 g / m 2 , the amount of fibers is too large during the production of the prepreg, and unevenness of resin impregnation occurs, resulting in good quality,
It cannot be a quality prepreg.
【００１２】また、樹脂含有率が１３重量％未満では樹
脂量が少なすぎて良好な品質、品位のプリプレグとする
ことができず、２７重量％を越える場合には成形体の軽
量化効果が損なわれる。If the resin content is less than 13% by weight, the amount of the resin is too small to obtain a prepreg of good quality and quality. If it exceeds 27% by weight, the effect of reducing the weight of the molded product is impaired. Be done.
【００１３】第２の層に用いるプリプレグの繊維目付は
５〜５０ｇ／ｍ2 の範囲にあり、好ましくは７〜４５ｇ
／ｍ2 、さらに好ましくは１０〜４０ｇ／ｍ2 の範囲に
ある。樹脂含有率は１７〜３３重量％の範囲にあり、好
ましくは２０〜３２重量％、さらに好ましくは２７〜３
０重量％の範囲にある。繊維目付が５ｇ／ｍ2 未満では
管状体の周方向に必要量の繊維を提供するためには多数
回巻き付けなければならず、軸方向に使用するプリプレ
グの量が増えて成形体の重量が増し好ましくない。５０
ｇ／ｍ2 を越える場合には繊維量が多すぎて樹脂の含浸
斑が起き、良好な品質、品位のプリプレグとすることが
できない。The fiber basis weight of the prepreg used for the second layer is in the range of 5 to 50 g / m 2 , preferably 7 to 45 g.
/ M 2 , more preferably 10 to 40 g / m 2 . The resin content is in the range of 17 to 33% by weight, preferably 20 to 32% by weight, more preferably 27 to 3%.
It is in the range of 0% by weight. If the fiber areal weight is less than 5 g / m 2, it must be wound many times to provide the required amount of fibers in the circumferential direction of the tubular body, and the amount of prepreg used in the axial direction increases and the weight of the molded body increases. Not preferable. 50
If it exceeds g / m 2 , the amount of fibers is too large to cause resin impregnation unevenness, and a prepreg of good quality and quality cannot be obtained.
【００１４】また樹脂含有率が１７重量％未満では樹脂
量が少なすぎて良好な品質、品位のプリプレグとするこ
とができず、また第１層と積層貼着ができなくなる。３
３重量％を越える場合には本来の目的である成形体の軽
量化が達成できない。If the resin content is less than 17% by weight, the amount of resin is too small to provide a prepreg of good quality and quality, and the first layer cannot be laminated and attached. 3
If it exceeds 3% by weight, the original purpose of reducing the weight of the molded article cannot be achieved.
【００１５】また、本発明における強化繊維としては、
その繊維束が一方向に引き揃えられたものの他、織物、
マットなどの形態をとり得るが、プリプレグの樹脂含有
率を低いものとするためには、繊維束が一方向に引き揃
えられたもの、第１、第２の層につまり一方向性プリプ
レグシートを用いることが好ましい。Further, as the reinforcing fiber in the present invention,
In addition to those whose fiber bundles are aligned in one direction, woven fabrics,
Although it may be in the form of a mat or the like, in order to reduce the resin content of the prepreg, a fiber bundle in which the fiber bundles are aligned in one direction, that is, a unidirectional prepreg sheet is used in the first and second layers. It is preferable to use.
【００１６】かかる場合に、繊維束の幅と厚みの比は５
〜２００、好ましくは８〜１５０、さらに好ましくは１
０〜１２０の範囲とすることが望ましい。この比が５未
満ではプリプレグ化する工程で繊維束が拡がりにくく、
得られるプリプレグに割れが発生したり、マトリックス
樹脂が繊維束の内部にまで含浸しにくい場合がある。一
方、繊維束の幅と厚みの比が２００を越える繊維束は実
際上得ることが困難である場合もある。ここで、繊維束
の幅Ｄ（ｍｍ）は実測により得られるものであり、繊維
束の厚みｔ（ｍｍ）は次式で求められる値である。 ｔ＝（ｆ×ｄ）／（Ｄ／ｄ） ここで、ｆは繊維束のフィラメント数、ｄ（ｍｍ）は単
繊維径を表す。In such a case, the width-to-thickness ratio of the fiber bundle is 5
-200, preferably 8-150, more preferably 1
It is desirable to set it in the range of 0 to 120. If this ratio is less than 5, the fiber bundle is difficult to spread in the step of forming prepreg,
In some cases, the resulting prepreg may be cracked or the matrix resin may be difficult to impregnate into the fiber bundle. On the other hand, it may be practically difficult to obtain a fiber bundle in which the width-thickness ratio of the fiber bundle exceeds 200. Here, the width D (mm) of the fiber bundle is obtained by actual measurement, and the thickness t (mm) of the fiber bundle is a value obtained by the following equation. t = (f × d) / (D / d) Here, f represents the number of filaments in the fiber bundle, and d (mm) represents the single fiber diameter.
【００１７】さらに、本発明のプリプレグにおいては、
第１の層に使用している強化繊維の弾性率が第２の層に
使用している強化繊維の弾性率より高いことが好まし
い。このようにすることにより、成形される管状体の軸
方向に対する曲げ弾性率等を効果的に向上できる。Further, in the prepreg of the present invention,
The elastic modulus of the reinforcing fibers used in the first layer is preferably higher than the elastic modulus of the reinforcing fibers used in the second layer. By doing so, it is possible to effectively improve the bending elastic modulus and the like of the molded tubular body in the axial direction.
【００１８】[0018]
【実施例】以下、本発明を実施例によってさらに具体的
に説明する。なお、本実施例中のプリプレグの評価法は
次の通りである。 （１）巻き付け性 第１の層と第２の層が８８〜９０度の交差角で積層、貼
着されたプリプレグ材を第１の層の繊維方向に幅１００
ｍｍ長さ３００ｍｍにカットし、プリプレグを直径１５
ｍｍ、長さ５００ｍｍの円筒芯体に手で巻き付ける。巻
き付け後、プリプレグに皺、または凸部、第１の層と第
２の層の剥がれが出るか否かを目視で観察する。EXAMPLES The present invention will be described in more detail below with reference to examples. In addition, the evaluation method of the prepreg in this example is as follows. (1) Windability The prepreg material in which the first layer and the second layer are laminated and attached at a crossing angle of 88 to 90 degrees has a width of 100 in the fiber direction of the first layer.
mm Cut to 300 mm in length and prepreg has a diameter of 15
mm and 500 mm in length, manually wound around a cylindrical core. After wrapping, it is visually observed whether or not wrinkles or protrusions on the prepreg and peeling of the first layer and the second layer appear on the prepreg.
【００１９】（２）４点曲げ測定方法 図１に示すように、長さ８５０ｍｍ、内径１５ｍｍφの
円筒試料１を使用し、支点２間距離Ｌ＝７５０ｍｍ、圧
子３間距離ｌ＝２００ｍｍとし、負荷速度は５ｍｍ／分
で測定した。円筒の曲げ強さは以下の式で算出した。 曲げ強さ＝最大曲げモーメント（Ｍ）／断面係数（Ｚ） Ｍ＝曲げ荷重×（Ｌ−ｌ）／４ Ｚ＝π／３２×（円筒外径4 −円筒内径4 ）／外径(2) Four-point bending measurement method As shown in FIG. 1, a cylindrical sample 1 having a length of 850 mm and an inner diameter of 15 mmφ was used, and the distance L between the fulcrums 2 was 750 mm and the distance l between the indenters 3 was 1 mm. The speed was measured at 5 mm / min. The bending strength of the cylinder was calculated by the following equation. Bending strength = Maximum bending moment (M) / Section modulus (Z) M = Bending load × (L−1) / 4 Z = π / 32 × (Cylinder outer diameter 4 -Cylinder inner diameter 4 ) / Outer diameter
【００２０】実施例１ “エピコート”８２８（ビスフェノールＡグリシジルエ
ーテル（エポキシ当量１８９）：油化シェル・エポキシ
（株）製）１６０重量部および“エピコート”１００１
（ビスフェノールＡグリシジルエーテル（エポキシ当量
４８５）：油化シェル・エポキシ（株）製）４０重量部
とジシアンジアミド５重量部および３（３，４−ジクロ
ロフェニル）−１，１−ジメチル尿素５重量部とを均一
に混合し、一液硬化型エポキシ樹脂組成物を得た。この
一液硬化型エポキシ樹脂組成物を離型紙にコーティング
して、樹脂フィルムを作製する。この樹脂フィルムの長
手方向と大略平行に、均一な張力で、繊維束の幅と厚み
の比が２０である“トレカ”Ｍ６０ＪＢ−６Ｋ（東レ
（株）製）の炭素繊維束を引き揃えた後、ホットローラ
間に通し含浸させると同時にＢステージ化して幅６００
ｍｍの繊維目付１２５ｇ／ｍ2 、樹脂含有率１９重量％
の第１層用の炭素繊維強化プリプレグ材を作製した。同
様な方法で“トレカ”Ｍ４０ＪＢ−３Ｋ（東レ（株）
製）の炭素繊維束を用い繊維目付３０ｇ／ｍ2 、樹脂含
有率３０重量％の第２層用の炭素繊維強化プリプレグ材
を作製した。この第１層と第２層を９０度の交差角で積
層し、直径２０ｃｍの金属ロールとゴムロールで挟み、
線圧１ｋｇ／ｃｍ、金属ロール加熱温度６０℃でロール
掛けし貼着して繊維強化樹脂管状体成形用プリプレグを
得た。このプリプレグの巻き付け性は良好であった。直
径１５ｍｍ、長さ１ｍの芯体に第２層を下向きにして２
回巻き付け、その上にポリエステルテープを巻き付け固
定し、硬化炉で１３０℃の温度で加熱硬化させ、炭素繊
維強化樹脂管状体を得た。管状体を４点曲げテストをし
たところ破壊強度５２ｋｇｆ／ｍｍ2 であった。Example 1 160 parts by weight of "Epicoat" 828 (bisphenol A glycidyl ether (epoxy equivalent: 189): Yuka Shell Epoxy Co., Ltd.) and "Epicoat" 1001
(Bisphenol A glycidyl ether (epoxy equivalent 485): manufactured by Yuka Shell Epoxy Co., Ltd.) 40 parts by weight, 5 parts by weight of dicyandiamide and 5 parts by weight of 3 (3,4-dichlorophenyl) -1,1-dimethylurea The mixture was uniformly mixed to obtain a one-component curing type epoxy resin composition. A resin film is prepared by coating release paper with the one-component curing type epoxy resin composition. After aligning the carbon fiber bundles of "Torayca" M60JB-6K (manufactured by Toray Industries, Inc.) having a width-thickness ratio of the fiber bundle of 20 with a uniform tension and substantially parallel to the longitudinal direction of the resin film. , Impregnating it through hot rollers, and at the same time converting to B stage and width 600
mm fiber weight 125 g / m 2 , resin content 19% by weight
A carbon fiber reinforced prepreg material for the first layer was prepared. In the same way, "Torayca" M40JB-3K (Toray Industries, Inc.)
A carbon fiber reinforced prepreg material for the second layer having a fiber basis weight of 30 g / m 2 and a resin content of 30% by weight was prepared using the carbon fiber bundle of (made by Japan). The first layer and the second layer are laminated at a crossing angle of 90 degrees and sandwiched between a metal roll and a rubber roll having a diameter of 20 cm,
A linear pressure of 1 kg / cm and a metal roll heating temperature of 60 ° C. were applied and rolled to obtain a fiber-reinforced resin tubular body forming prepreg. The winding property of this prepreg was good. 2 mm layer with a diameter of 15 mm and a core length of 1 m
It was wound around once, a polyester tape was wound around it and fixed, and heated and cured at a temperature of 130 ° C. in a curing oven to obtain a carbon fiber reinforced resin tubular body. When the tubular body was subjected to a 4-point bending test, the breaking strength was 52 kgf / mm 2 .
【００２１】実施例２ 第１の層のプリプレグの炭素繊維束を“トレカ”Ｍ５５
ＪＢ−６Ｋ（東レ（株）製）とし樹脂含有率を２２重量
％とした以外は、実施例１と同様にしてプリプレグ材を
作製した。得られたプリプレグ材において、巻き付け性
評価結果は良好であり、管状体を４点曲げテストしたと
ころ破壊強度５７ｋｇｆ／ｍｍ2 であった。Example 2 A carbon fiber bundle of the prepreg of the first layer was made into "Torayca" M55.
A prepreg material was produced in the same manner as in Example 1 except that JB-6K (manufactured by Toray Industries, Inc.) was used and the resin content was 22% by weight. The obtained prepreg material had a good winding property evaluation result, and when the tubular body was subjected to a four-point bending test, the breaking strength was 57 kgf / mm 2 .
【００２２】比較例１ 第２の層のプリプレグの樹脂含有率を１２重量％とした
以外は、実施例１と同様にしてプリプレグ材を作製し
た。得られたプリプレグ材の巻き付け性は悪く、巻き付
け直後に第１層と第２層が剥離を起こし、成形に適さな
いプリプレグ材であった。直径１５ｍｍ、長さ１ｍの芯
体に第２層を下向きにして２回巻き付けようとしたが、
皺が発生し終端が剥離していたので、巻き付けに非常に
時間がかかりポリエステルテープを巻き付けた際に炭素
繊維が切損したため外観の悪い管状体となり実用に向か
なかった。Comparative Example 1 A prepreg material was produced in the same manner as in Example 1 except that the resin content of the prepreg of the second layer was 12% by weight. The obtained prepreg material had a poor winding property, and the first layer and the second layer were separated immediately after winding, and the prepreg material was not suitable for molding. I tried to wind it around the core with a diameter of 15 mm and a length of 1 m twice with the second layer facing downward.
Since wrinkles were generated and the end was peeled off, it took a very long time to wind the carbon fiber, and when the polyester tape was wound, the carbon fiber was cut off, resulting in a tubular body having a poor appearance and not suitable for practical use.
【００２３】比較例２ 第２の層のプリプレグの樹脂含有率を４０重量％とした
以外は、実施例１と同様にしてプリプレグ材を作製し
た。巻き付け性は良好であったが、このプリプレグを用
いても管状体成形物の軽量化はできなかった。Comparative Example 2 A prepreg material was produced in the same manner as in Example 1 except that the resin content of the prepreg of the second layer was 40% by weight. The wrapping property was good, but the use of this prepreg could not reduce the weight of the tubular molded product.
【００２４】比較例３ 第１の層のプリプレグの樹脂含有率を１０重量％、第２
の層のプリプレグの樹脂含有率を１０重量％とした以外
は実施例１と同様にしてプリプレグ材を作製したが第１
の層と第２の層がすぐに剥離し、積層貼着できなかっ
た。Comparative Example 3 The resin content of the prepreg of the first layer was 10% by weight,
A prepreg material was produced in the same manner as in Example 1 except that the resin content of the prepreg of the layer was set to 10% by weight.
The layer and the second layer were immediately peeled off, and the laminate could not be attached.
【００２５】比較例４ 第１の層のプリプレグの樹脂含有率を４０重量％、第２
の層のプリプレグの樹脂含有率を２７重量％とした以外
は、実施例１と同様にしてプリプレグ材を作製した。巻
き付け性は良好であったが、樹脂量が多すぎて、このプ
リプレグを用いても管状体成形物の軽量化はできなかっ
た。Comparative Example 4 The resin content of the prepreg of the first layer was 40% by weight,
A prepreg material was produced in the same manner as in Example 1 except that the resin content of the prepreg of the layer was 27% by weight. The wrapping property was good, but the amount of resin was too large, and it was not possible to reduce the weight of the tubular body molded product using this prepreg.
【００２６】[0026]
【発明の効果】本発明のプリプレグによれば、第１の層
と第２の層の繊維目付と樹脂含有率の範囲を特定するこ
とにより、プリプレグの樹脂含有率が低いにもかかわら
ず、プリプレグ材同士の剥離がなく、芯体へ巻き付ける
場合の作業性に優れたプリプライドプリプレグとするこ
とができ、それを用いて管状体成形物の軽量化を促進で
きるという効果を与える。EFFECTS OF THE INVENTION According to the prepreg of the present invention, the range of the fiber basis weight and the resin content of the first layer and the second layer is specified, so that the prepreg is low in spite of the low resin content of the prepreg. It is possible to obtain a prepreg prepreg which is excellent in workability when wound around a core body without peeling of materials from each other, and by using the prepreg prepreg, it is possible to reduce the weight of the tubular body molded article.
【図１】４点曲げ測定方法を示す概略構成図である。FIG. 1 is a schematic configuration diagram showing a four-point bending measurement method.
１ 円筒試料 ２ 支点 ３ 圧子 1 Cylindrical sample 2 Support 3 Indenter
Claims (7)
層構成のプリプレグであって、第１の層が繊維目付５０
〜３００ｇ／ｍ2 、樹脂含有率１３〜２７重量％の範囲
にあり、第２の層が繊維目付５〜５０ｇ／ｍ2 、樹脂含
有率１７〜３３重量％の範囲にあり、第１の層における
強化繊維と第２の層における強化繊維とが８５〜９０度
の範囲の角度で交差するように積層されていることを特
徴とするプリプレグ。1. A resin containing reinforcing fibers and a matrix resin.
A prepreg having a layer structure, wherein the first layer has a fiber areal weight 50.
-300 g / m 2 , the resin content is in the range of 13 to 27% by weight, the second layer is in the range of 5 to 50 g / m 2 of fiber areal weight and the resin content is in the range of 17 to 33% by weight, and the first layer is The prepreg characterized in that the reinforcing fiber in (4) and the reinforcing fiber in the second layer are laminated so as to intersect at an angle in the range of 85 to 90 degrees.
層における強化繊維とが８８〜９０度の範囲の角度で交
差するように積層されている、請求項１のプリプレグ。2. The prepreg according to claim 1, wherein the reinforcing fibers in the first layer and the reinforcing fibers in the second layer are laminated so as to intersect with each other at an angle in the range of 88 to 90 degrees.
プレグシートからなる、請求項１または２のプリプレ
グ。3. The prepreg according to claim 1, wherein the first layer and the second layer are unidirectional prepreg sheets.
率が第２の層に使用している強化繊維の弾性率より高
い、請求項１ないし３のいずれかに記載のプリプレグ。4. The prepreg according to claim 1, wherein the elastic modulus of the reinforcing fibers used in the first layer is higher than the elastic modulus of the reinforcing fibers used in the second layer.
る、請求項１ないし４のいずれかに記載のプリプレグ。5. The prepreg according to claim 1, wherein the matrix resin is an epoxy resin.
強化繊維が炭素繊維または黒鉛繊維である、請求項１な
いし５のいずれかに記載のプリプレグ。6. The prepreg according to claim 1, wherein the reinforcing fibers used in the first layer and the second layer are carbon fibers or graphite fibers.
請求項１ないし６のいずれかに記載のプリプレグ。7. It is used for forming a tubular body,
The prepreg according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9764396A JPH09262832A (en) | 1996-03-27 | 1996-03-27 | Prepreg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9764396A JPH09262832A (en) | 1996-03-27 | 1996-03-27 | Prepreg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09262832A true JPH09262832A (en) | 1997-10-07 |
Family
ID=14197811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9764396A Pending JPH09262832A (en) | 1996-03-27 | 1996-03-27 | Prepreg |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09262832A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016097661A (en) * | 2014-11-26 | 2016-05-30 | 株式会社 サン・テクトロ | Carbon fiber-reinforced plastic material and prepreg molded product manufacturing method using the same |
| US20180117431A1 (en) * | 2016-10-28 | 2018-05-03 | Karsten Manufacturing Corporation | Diameter profiled golf club shaft to reduce drag |
-
1996
- 1996-03-27 JP JP9764396A patent/JPH09262832A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016097661A (en) * | 2014-11-26 | 2016-05-30 | 株式会社 サン・テクトロ | Carbon fiber-reinforced plastic material and prepreg molded product manufacturing method using the same |
| US20180117431A1 (en) * | 2016-10-28 | 2018-05-03 | Karsten Manufacturing Corporation | Diameter profiled golf club shaft to reduce drag |
| US10272304B2 (en) * | 2016-10-28 | 2019-04-30 | Karsten Manufacturing Corporation | Diameter profiled golf club shaft to reduce drag |
| US10758796B2 (en) | 2016-10-28 | 2020-09-01 | Karsten Manufacturing Corporation | Diameter profiled golf club shaft to reduce drag |
| US11918873B2 (en) | 2016-10-28 | 2024-03-05 | Karsten Manufacturing Corporation | Diameter profiled golf club shaft to reduce drag |
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