JPH044143A - Carbon fiber reinforced composite material - Google Patents
Carbon fiber reinforced composite materialInfo
- Publication number
- JPH044143A JPH044143A JP10445290A JP10445290A JPH044143A JP H044143 A JPH044143 A JP H044143A JP 10445290 A JP10445290 A JP 10445290A JP 10445290 A JP10445290 A JP 10445290A JP H044143 A JPH044143 A JP H044143A
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- epoxy resin
- carbon fiber
- reinforced composite
- fiber reinforced
- 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
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000011208 reinforced composite material Substances 0.000 title claims abstract description 10
- 239000003822 epoxy resin Substances 0.000 claims abstract description 33
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 7
- 239000011159 matrix material Substances 0.000 abstract description 5
- 238000010030 laminating Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 10
- 239000003733 fiber-reinforced composite Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は人工衛星等の宇宙＃Ｉ遺物、航空機、自動車、
レジャー用品などの楕遺体に用いる炭素繊維強化複合材
料に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to space #I relics such as artificial satellites, aircraft, automobiles,
This invention relates to carbon fiber-reinforced composite materials used for elliptical bodies such as leisure goods.
炭素繊維をベースにした１ｍ維強化複合材料（ＣＦＲＰ
）は、比強度や比弾性率の面で、他の強化繊維であるガ
ラス、アラミドおよびボロン繊維などを用いた繊維強化
複合材料よりも優れており、航空宇宙、自動車、レジャ
ー用品などの構造材料として幅広く用いられるようにな
ってきている。1m fiber-reinforced composite material (CFRP) based on carbon fiber
) is superior to fiber-reinforced composite materials using other reinforcing fibers such as glass, aramid, and boron fibers in terms of specific strength and specific modulus, and is suitable for structural materials such as aerospace, automobiles, and leisure goods. It has come to be widely used as a
ＣＦＲＰのなかで現在主流となっているのが、炭素繊維
をエポキシ樹脂で固型化した複合材料である。エポキシ
樹脂を用いたＣＦＲＰは、半硬化のフレキシブルな状態
で積層し焼き固めるという一体成形が可能であるため、
複雑な形状の楕遺物を容易に作製できること、さらには
耐熱性に優れているなどの特長を有する。The currently mainstream CFRP is a composite material made of carbon fibers solidified with epoxy resin. CFRP using epoxy resin can be integrally formed by laminating and baking in a semi-hardened and flexible state.
It has features such as being able to easily produce elliptical artifacts with complex shapes and having excellent heat resistance.
炭素繊維自体の性能が高まるにつれて、エポキシ樹脂の
脆性的特性が問題になっている。エポキシ樹脂をマトリ
ックスにするＣＦＲＰに引張り、繰り返し、衝撃などの
荷重を加えた場合、最初に樹脂の破壊が生じ、前記破壊
がＣＦＲＰ全体の破壊を引起こす、このため、炭素繊維
自体の強度を高めても、ＣＦＲＰの強度はそれ程増加し
ない。As the performance of carbon fiber itself increases, the brittle properties of epoxy resins become a problem. When a load such as tension, repetition, impact, etc. is applied to CFRP that uses epoxy resin as a matrix, the resin first breaks down, and this destruction causes the entire CFRP to break. Therefore, the strength of the carbon fiber itself is increased. However, the strength of CFRP does not increase that much.
例えば、高強度繊維トレカＴ８００ （東し株式会社
製）をベースにした擬似等方性構成のＣＦＲＰでは、引
張り破断伸びが１．５％と、繊維自体の破断伸びの１．
９％よりも小さな値となっている。また、前記複合材料
では、伸びが１％の状態で９０゜と４５°の層間に顕著
な剥離が生じており、この段階で構造材料としての使用
は難しいことを示している。For example, CFRP with a quasi-isotropic structure based on the high-strength fiber Torayca T800 (manufactured by Toshi Co., Ltd.) has a tensile elongation at break of 1.5%, which is 1.5% of the elongation at break of the fiber itself.
This value is smaller than 9%. Furthermore, in the composite material, significant peeling occurred between the layers at 90° and 45° at an elongation of 1%, indicating that it is difficult to use it as a structural material at this stage.
また、エポキシ樹脂の脆性的特性はＣＦＲＰの強度特性
のばらつきを大きくするため、構造物設計時の安全率を
低下させるという問題があった。Furthermore, the brittle characteristics of the epoxy resin increase the variation in the strength characteristics of the CFRP, resulting in a problem of lowering the safety factor when designing a structure.
これら問題を解決する目的で、マトリックス樹脂に靭性
の大きな熱可塑性樹脂を使用し、ＣＦＲＰの強度特性を
向上させる試みが検討されている。In order to solve these problems, attempts are being made to improve the strength characteristics of CFRP by using a thermoplastic resin with high toughness as the matrix resin.
これは、耐熱性に優れた熱可塑性樹脂であるポリエーテ
ルエーテルゲトン樹脂（ＰＥＥＫ）やポリエーテルサル
ホン樹脂（ＰＥＥ）をマトリックス樹脂に用いるもので
ある。しかし、このような熱可塑性樹脂の適用は、ＣＦ
ＲＰの強度特性を向上できるものの、成形温度が非常に
高くなり現有の設備では成形できないばかりでなく、プ
リプレグシートのフレキシビリティがエポキシ樹脂ベー
スのものに比較して乏しく複雑な形状の構造物が作製し
器いなどの問題点があり効果的でない。This uses polyether ether getone resin (PEEK) or polyether sulfone resin (PEE), which are thermoplastic resins with excellent heat resistance, as the matrix resin. However, the application of such thermoplastic resins
Although it is possible to improve the strength properties of RP, the molding temperature is extremely high, making it impossible to mold with existing equipment, and the flexibility of prepreg sheets is poor compared to epoxy resin-based ones, resulting in complex-shaped structures. It is not effective due to problems such as lack of equipment.
本発明は前記課題を解決するものであり、その目的とす
るところは従来のＣＦＲＰの成形方法で機械的強度に優
れた炭素繊維強化複合材料を提供することにある。The present invention is intended to solve the above problems, and its purpose is to provide a carbon fiber reinforced composite material with excellent mechanical strength using a conventional CFRP molding method.
前記目的を達成するため、本発明に係る炭素繊維強化複
合材料においては、カーボン繊維をエポキシ樹脂に充填
した複合材料層と、ポリエチレングリコール、ポリプロ
ピレングリコール、液状ゴムなどの可撓性付与剤を添加
したエポキシ樹脂層との組合せによる炭素繊維強化複合
材料であって、前記複合材料層とエポキシ樹脂層とは積
層一体化されたものである。In order to achieve the above object, the carbon fiber reinforced composite material according to the present invention includes a composite material layer in which carbon fibers are filled in an epoxy resin, and a flexibility imparting agent such as polyethylene glycol, polypropylene glycol, or liquid rubber is added. A carbon fiber reinforced composite material in combination with an epoxy resin layer, wherein the composite material layer and the epoxy resin layer are laminated and integrated.
本発明の炭素繊維強化複合材料では、層間にポリエチレ
ングリコール、ポリプロピレングリコール、液状ゴムな
どの可撓性付与剤を添加したエポキシ樹脂層を設けであ
る。前記エポキシ樹脂は可撓性付与剤の添加により、マ
トリックス樹脂に用いているエポキシ樹脂よりも大きな
破断伸びを示す、このため、複合材料の層間破壊靭性を
高めることが可能となり、層間剥離などの損傷の進展が
抑制され、引張り強度、疲労強度などの機械的強度を改
善できる。In the carbon fiber reinforced composite material of the present invention, an epoxy resin layer containing a flexibility imparting agent such as polyethylene glycol, polypropylene glycol, or liquid rubber is provided between the layers. By adding a flexibility imparting agent, the epoxy resin exhibits a larger elongation at break than the epoxy resin used for the matrix resin. Therefore, it is possible to increase the interlaminar fracture toughness of the composite material and prevent damage such as delamination. This suppresses the development of mechanical properties, and improves mechanical strength such as tensile strength and fatigue strength.
以下に、本発明を図によって説明する。 In the following, the present invention will be explained with reference to the drawings.
第１図は本発明に係る繊維強化複合材料を示す断面図で
ある。FIG. 1 is a sectional view showing a fiber reinforced composite material according to the present invention.
図において実施例は、一方向に引き揃えた高強度繊維ト
レカＴ８００ （東し株式会社製）とエポキシ樹脂と
からなる複合材料層１をＯｏ、±４５゜９０°の方向に
並べた擬似等方性の積層板の４５°と９０°層間にエポ
キシ樹脂フィルム２を設けである。In the example shown in the figure, a composite material layer 1 made of high-strength fiber trading card T800 (manufactured by Toshi Co., Ltd.) aligned in one direction and an epoxy resin is arranged in a direction of Oo, ±45° and 90° to create a pseudo-isotropic structure. An epoxy resin film 2 was provided between the 45° and 90° layers of the laminate.
ここで用いたエポキシ樹脂フィルム２は＃ ２５００エ
ポキシ樹脂（東し株式会社製）に可視性付与剤ポリエチ
レングリコールを６０重１部充填したものである。成形
は、半硬化状の複合材料層１とエポキシ樹脂フィルム２
とを積層し、オートクレーブで加熱加圧硬化させること
により行った。The epoxy resin film 2 used here was made of #2500 epoxy resin (manufactured by Toshi Co., Ltd.) filled with 60 parts by weight of polyethylene glycol as a visibility imparting agent. The molding process consists of a semi-cured composite material layer 1 and an epoxy resin film 2.
This was done by laminating them and curing them under heat and pressure in an autoclave.
第２図に、エポキシ樹脂フィルム２を０°と４５°の層
間に設けた本発明の繊維強化複合材料の断面を、第３図
に、エポキシ樹脂フィルム２を９０°層間に設けた本発
明の繊維強化複合材料の断面を、第４図に、エポキシ樹
脂フィルム２を全層間に設けた本発明の繊維強化複合材
料の断面をそれぞれ示す。Fig. 2 shows a cross section of the fiber reinforced composite material of the present invention in which the epoxy resin film 2 is provided between the 0° and 45° layers, and Fig. 3 shows the cross section of the fiber reinforced composite material of the present invention in which the epoxy resin film 2 is provided between the 90° layers. FIG. 4 shows a cross section of a fiber reinforced composite material of the present invention in which an epoxy resin film 2 is provided between all layers.
表１に、第１図〜第４図に示す各実施例の複合材料と、
エポキシ樹脂フィルム２を設けていない従来の複合材料
の引張り破断荷重を示す、試験は、２５市幅の短冊状試
験片を用いて行った。表１より明らかなように、本発明
の繊維強化複合材料は、従来のものに比較して、大きな
破断強度か得られている。また、強度のばらつきを表す
変動係数も小さくなっており、信頼性が向上しているこ
とがわかる。Table 1 shows the composite materials of each example shown in FIGS. 1 to 4,
A test showing the tensile breaking load of a conventional composite material without the epoxy resin film 2 was conducted using a strip-shaped test piece with a width of 25 cm. As is clear from Table 1, the fiber-reinforced composite material of the present invention has a greater breaking strength than the conventional material. Furthermore, the coefficient of variation, which represents variations in strength, has also become smaller, indicating that reliability has improved.
（以下余白）
表 １
第５図に、第１図に示す実施例の複合材料と、エポキシ
樹脂フィルム２を設けていない従来の複合材料との疲労
寿命を示す。試験は、引張り一引張りの繰り返し荷重を
加え行った。縦軸は静的引張強度を基準にし算出した応
力比、横軸は破断回数をそれぞれ表す０図より明らかな
とおり、本発明の疲労寿命が長いことが分かる。(Margin below) Table 1 FIG. 5 shows the fatigue life of the composite material of the example shown in FIG. 1 and the conventional composite material without the epoxy resin film 2. The test was conducted by applying a repeated load of one tension to another. As is clear from the diagram, the vertical axis represents the stress ratio calculated based on the static tensile strength, and the horizontal axis represents the number of fractures, the fatigue life of the present invention is long.
以上のように本発明によれば、従来の成形法で機械的強
度に優れた炭素繊維強化複合材料を実現することか可能
となる。また、強度のばらつきを小さくできるため、宇
宙航空関連等横道体の信頼性を向上できる効果を有する
ものである。As described above, according to the present invention, it is possible to realize a carbon fiber reinforced composite material with excellent mechanical strength using a conventional molding method. Furthermore, since variations in strength can be reduced, it has the effect of improving the reliability of crossroads such as those related to aerospace.
第１図〜第４図は本発明に係る炭素繊維強化複合材料を
示す断面図、第５図は第１図に示す実施例の複合材料と
従来の複合材料の疲労寿命を示す図である。
■・・・高強度炭素繊維トレカ’ｌ’８００とエポキシ
樹脂からなる複合材料層
２・・・エポキシ樹脂フィルム
特許出願人 日本電気株式会社1 to 4 are cross-sectional views showing the carbon fiber reinforced composite material according to the present invention, and FIG. 5 is a diagram showing the fatigue life of the composite material of the embodiment shown in FIG. 1 and the conventional composite material. ■Composite material layer 2 consisting of high-strength carbon fiber trading card 'l'800 and epoxy resin...Epoxy resin film patent applicant NEC Corporation
Claims (1)
層と、ポリエチレングリコール、ポリプロピレングリコ
ール、液状ゴムなどの可撓性付与剤を添加したエポキシ
樹脂層との組合せによる炭素繊維強化複合材料であって
、 前記複合材料層とエポキシ樹脂層とは積層一体化された
ものであることを特徴とする炭素繊維強化複合材料。(1) A carbon fiber reinforced composite material made of a combination of a composite material layer in which carbon fibers are filled in an epoxy resin and an epoxy resin layer to which a flexibility imparting agent such as polyethylene glycol, polypropylene glycol, or liquid rubber is added, A carbon fiber reinforced composite material, characterized in that the composite material layer and the epoxy resin layer are integrally laminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10445290A JPH044143A (en) | 1990-04-20 | 1990-04-20 | Carbon fiber reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10445290A JPH044143A (en) | 1990-04-20 | 1990-04-20 | Carbon fiber reinforced composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH044143A true JPH044143A (en) | 1992-01-08 |
Family
ID=14381016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10445290A Pending JPH044143A (en) | 1990-04-20 | 1990-04-20 | Carbon fiber reinforced composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH044143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016120785A1 (en) * | 2015-01-28 | 2016-08-04 | Composite Research S.R.L. | A panel made of composite material having a layered structure |
-
1990
- 1990-04-20 JP JP10445290A patent/JPH044143A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016120785A1 (en) * | 2015-01-28 | 2016-08-04 | Composite Research S.R.L. | A panel made of composite material having a layered structure |
| US10583638B2 (en) | 2015-01-28 | 2020-03-10 | Composite Research S.R.L. | Panel made of composite material having a layered structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Timmerman et al. | Matrix and fiber influences on the cryogenic microcracking of carbon fiber/epoxy composites | |
| KR930003894B1 (en) | Novel prepregs, composite molded bodies, and methods for producing composite molded bodies | |
| JP5736560B2 (en) | Laminated molded body | |
| CN102498173B (en) | Binder composition, reinforcing-fiber base material, preform, fiber-reinforced composite material, and manufacturing method therefor | |
| Beckermann | Nanofiber interleaving veils for improving the performance of composite laminates | |
| Ikbal et al. | Effect of hybrid ratio and laminate geometry on compressive properties of carbon/glass hybrid composites | |
| Subhedar et al. | Effect of fibre orientation on mechanical properties of carbon fibre composites | |
| EP2447308A2 (en) | Composite compositions | |
| Amar et al. | A comparative study on the properties of carbon fiber-reinforced polymer composites developed by hand layup and vacuum bagging molding techniques | |
| JP4107475B2 (en) | Reinforcing fibers for fiber reinforced composites | |
| KR101884606B1 (en) | Epoxy resin composition for fiber reinforced composite with high impact resistance and high strength | |
| Wang et al. | Impact behavior of hybrid-fiber and hybrid-matrix composites | |
| JPH044143A (en) | Carbon fiber reinforced composite material | |
| JPH044107A (en) | Prepreg sheet of carbon fiber reinforced composite material | |
| Randjbaran et al. | Experimental Study of the Influence of Stacking Order of the Fibrous Layers on Laminated Hybrid Composite Plates Subjected to Compression Loading | |
| JPH04267139A (en) | Carbon fiber reinforced composite material prepreg sheet | |
| Yi et al. | Preform-based toughening technology for RTMable high-temperature aerospace composites | |
| JP2010059300A (en) | Carbon fiber reinforced composite material and method for producing the same | |
| JPH044144A (en) | Carbon fiber reinforced composite material | |
| Ridlwan et al. | Mechanical properties of sandwich composite using glass fiber reinforced polymer as a skin and 3D printed polylactic acid as a core | |
| Lee et al. | Static behavior characteristics of hybrid composites with nonwoven carbon tissue | |
| Lee et al. | Mechanical properties and failure mechanism of the polymer composite with 3-dimensionally stitched woven fabric | |
| JP5239350B2 (en) | Prepreg and fiber reinforced composite materials | |
| JPH04251715A (en) | Manufacture of carbon fiber reinforced composite material | |
| WO2024176998A1 (en) | Frp |