JP2015054468A - Fiber-reinforced resin composite material and automobile member - Google Patents
Fiber-reinforced resin composite material and automobile member Download PDFInfo
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- JP2015054468A JP2015054468A JP2013189940A JP2013189940A JP2015054468A JP 2015054468 A JP2015054468 A JP 2015054468A JP 2013189940 A JP2013189940 A JP 2013189940A JP 2013189940 A JP2013189940 A JP 2013189940A JP 2015054468 A JP2015054468 A JP 2015054468A
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- 239000000463 material Substances 0.000 title claims abstract description 46
- 239000000805 composite resin Substances 0.000 title claims description 43
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 33
- 239000004917 carbon fiber Substances 0.000 claims abstract description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003365 glass fiber Substances 0.000 claims abstract description 28
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims description 39
- 239000011342 resin composition Substances 0.000 abstract 2
- 230000000052 comparative effect Effects 0.000 description 9
- 229920002239 polyacrylonitrile Polymers 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000004148 curcumin Substances 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
Description
本発明は、繊維強化樹脂複合材及び自動車用部材に関する。 The present invention relates to a fiber reinforced resin composite material and an automobile member.
従来、繊維強化樹脂複合材（ＦＲＰ：Fiber Reinforced Plastics）は、航空機、自動車、船舶等の構造用部材として広く用いられている。
繊維強化樹脂複合材は、炭素繊維束やガラス繊維束等の無機物系強化繊維束を縦横に配して織り込んだ織物に、エポキシ樹脂等の樹脂を含浸硬化させて形成される。繊維強化樹脂複合材を構成する無機物系強化繊維束は、複数の繊維が撚り合わされて構成される。
Conventionally, fiber reinforced resin composites (FRP: Fiber Reinforced Plastics) have been widely used as structural members for aircraft, automobiles, ships, and the like.
The fiber reinforced resin composite material is formed by impregnating and curing a resin such as an epoxy resin in a woven fabric in which inorganic reinforced fiber bundles such as carbon fiber bundles and glass fiber bundles are arranged vertically and horizontally. The inorganic-based reinforcing fiber bundle constituting the fiber-reinforced resin composite material is configured by twisting a plurality of fibers.
このような繊維強化樹脂複合材としては、例えば、炭素繊維束とフェノール樹脂を含み、更にガラス繊維等の補強繊維束が炭素繊維束に対して所定の体積含有率で含有されていることにより、線膨張係数を所定の値とした繊維強化樹脂複合材が提供されている（例えば、特許文献１参照）。線膨張係数を所定の値とすることで、当該繊維強化樹脂複合材と、金属やコンクリート等との間における線膨張係数差を小さくし、繊維強化樹脂複合材及び金属やコンクリート等からなる構造体に寸法誤差が生じることを抑制している。なお、炭素繊維束は複数の炭素繊維フィラメントが撚り合わされてなり、ガラス繊維束は複数のガラス繊維フィラメントが撚り合わされてなる。 As such a fiber reinforced resin composite material, for example, including a carbon fiber bundle and a phenol resin, and further containing a reinforcing fiber bundle such as glass fiber at a predetermined volume content with respect to the carbon fiber bundle, A fiber reinforced resin composite material having a predetermined linear expansion coefficient is provided (for example, see Patent Document 1). By setting the linear expansion coefficient to a predetermined value, the difference in linear expansion coefficient between the fiber reinforced resin composite material and metal, concrete, or the like is reduced, and the structure made of fiber reinforced resin composite material, metal, concrete, or the like. The occurrence of dimensional errors is suppressed. The carbon fiber bundle is formed by twisting a plurality of carbon fiber filaments, and the glass fiber bundle is formed by twisting a plurality of glass fiber filaments.
しかしながら、上記した従来の技術における繊維強化樹脂複合材によれば、炭素繊維束とガラス繊維束とが併用されていることで耐久性が向上しているが、連続使用されることにより徐々に強度の劣化が生じ、場合によっては破壊が生じてしまうおそれがあった。これは、使用時に繊維強化樹脂複合材が外部環境に晒されることで、炭素繊維束とガラス繊維束との線膨張係数差によって各強化繊維束と樹脂との間に発生する局所的応力が不均一となり、これが繰り返されることで各強化繊維束と樹脂との間に剥離が発生してしまうことに起因するものと推定される。 However, according to the above-described fiber reinforced resin composite material in the prior art, the durability is improved by using the carbon fiber bundle and the glass fiber bundle in combination, but the strength is gradually increased by continuous use. There was a possibility that the deterioration of the material occurred, and in some cases, destruction occurred. This is because when the fiber reinforced resin composite is exposed to the external environment during use, the local stress generated between each reinforced fiber bundle and the resin due to the difference in linear expansion coefficient between the carbon fiber bundle and the glass fiber bundle is reduced. It is presumed to be caused by the occurrence of separation between each reinforcing fiber bundle and the resin by becoming uniform and repeating.
したがって、本発明の課題は、強化繊維束と樹脂との間に局所的応力が発生することを抑制し、耐久性に優れる繊維強化樹脂複合材及びそれを用いた自動車用部材を提供することである。 Accordingly, an object of the present invention is to provide a fiber-reinforced resin composite material that suppresses the occurrence of local stress between the reinforcing fiber bundle and the resin and is excellent in durability, and an automotive member using the same. is there.
以上の課題を解決するため、請求項１に記載の発明は、
複数の強化繊維束に樹脂が含浸された繊維強化樹脂複合材であって、
前記強化繊維束は、炭素繊維フィラメントとガラス繊維フィラメントとが撚り合わされてなることを特徴とする。
In order to solve the above problems, the invention described in claim 1
A fiber reinforced resin composite material in which a plurality of reinforcing fiber bundles are impregnated with resin,
The reinforcing fiber bundle is characterized in that carbon fiber filaments and glass fiber filaments are twisted together.
また、請求項２に記載の発明は、自動車用部材であって、
請求項１に記載の繊維強化樹脂複合材からなることを特徴とする。
The invention according to claim 2 is an automotive member,
It consists of the fiber reinforced resin composite material of Claim 1.
本発明によれば、繊維強化樹脂複合材を構成する強化繊維束が、炭素繊維フィラメントとガラス繊維フィラメントとが撚り合わされて構成されているので、繊維強化樹脂複合材内で強化繊維束と樹脂との間に局所的応力が発生することを抑制し、耐久性に優れる繊維強化樹脂複合材を提供することができる。 According to the present invention, the reinforcing fiber bundle constituting the fiber reinforced resin composite material is configured by twisting the carbon fiber filament and the glass fiber filament, so that the reinforcing fiber bundle and the resin are combined in the fiber reinforced resin composite material. It is possible to provide a fiber-reinforced resin composite material that suppresses the occurrence of local stress during the period and is excellent in durability.
以下、本発明とその構成要素、及び本発明を実施するための形態・態様について詳細な説明をする。なお、本願において、数値範囲を表す「〜」は、その前後に記載される数値を下限値及び上限値として含む意味で使用している。 Hereinafter, the present invention, its components, and modes and modes for carrying out the present invention will be described in detail. In addition, in this application, "-" showing a numerical range is used by the meaning containing the numerical value described before and behind that as a lower limit and an upper limit.
本発明の繊維強化樹脂複合材は、複数の強化繊維束と、当該強化繊維束に含浸される樹脂とから構成されている。 The fiber reinforced resin composite material of the present invention is composed of a plurality of reinforcing fiber bundles and a resin impregnated in the reinforcing fiber bundles.
本発明に係る強化繊維束は、炭素繊維フィラメントとガラス繊維フィラメントとが撚り合わされて構成されているものである。この強化繊維束は、炭素繊維フィラメント及びガラス繊維フィラメントが、例えば、合わせて数百本〜数万本撚り合わされて構成されている。ガラス繊維フィラメントは、炭素繊維フィラメントに対して重量比で１〜９９％程度含まれている。 The reinforcing fiber bundle according to the present invention is constituted by twisting carbon fiber filaments and glass fiber filaments. This reinforcing fiber bundle is constituted by twisting several hundred to several tens of thousands of carbon fiber filaments and glass fiber filaments in total. The glass fiber filament is contained in an amount of about 1 to 99% by weight with respect to the carbon fiber filament.
炭素繊維フィラメントとしては、例えば、ポリアクリロニトリル（ＰＡＮ）系、ピッチ系、レーヨン系等、いずれの炭素繊維フィラメントであっても使用することができる。これらの中では、ＰＡＮ系炭素繊維フィラメントが生産性及び入手容易性の観点から好ましい。
炭素繊維フィラメントの径は、繊維強化樹脂複合材の用途に応じて適宜変更され得るが、例えば、５〜７μｍのものが好ましい。
As the carbon fiber filament, any carbon fiber filaments such as polyacrylonitrile (PAN), pitch, and rayon can be used. Among these, PAN-based carbon fiber filaments are preferable from the viewpoints of productivity and availability.
Although the diameter of a carbon fiber filament can be suitably changed according to the use of a fiber reinforced resin composite material, the thing of 5-7 micrometers is preferable, for example.
ガラス繊維フィラメントとしては、例えば、アルカリ含有率１％以下のホウケイ酸ガラスから作製されるＥガラスの繊維、又は高強度、高弾性率の無アルカリアルミのケイ酸塩ガラスであるＳガラスの繊維等、いずれのガラス繊維フィラメントであっても使用することができる。
ガラス繊維フィラメントの径は、繊維強化樹脂複合材の用途に応じて適宜変更され得るが、例えば、１０〜２４μｍのものが好ましい。
Examples of the glass fiber filament include an E glass fiber prepared from a borosilicate glass having an alkali content of 1% or less, or an S glass fiber that is a high-strength, high-modulus non-alkali aluminum silicate glass. Any glass fiber filament can be used.
Although the diameter of a glass fiber filament can be suitably changed according to the use of a fiber reinforced resin composite material, a thing of 10-24 micrometers is preferable, for example.
本発明に係る強化繊維束を形成する方法としては、例えば、複数の炭素繊維フィラメントが撚り合わされてなる炭素繊維束を開繊し、開繊された複数の炭素繊維フィラメントにガラス繊維フィラメントを加えて、再びこれらを撚り合わせて紡糸することによって強化繊維束を形成する方法が好適に用いられる。ここで、開繊とは、複数のフィラメントから構成される繊維束をほぐしてばらけさせ、幅方向にほぼ均一に分散させることをいう。このような開繊及び紡糸の方法については、従来公知のいずれの手法を適用しても良い。 As a method for forming a reinforcing fiber bundle according to the present invention, for example, a carbon fiber bundle formed by twisting a plurality of carbon fiber filaments is opened, and glass fiber filaments are added to the opened carbon fiber filaments. A method of forming a reinforcing fiber bundle by twisting and spinning these again is preferably used. Here, the term “opening” means that a fiber bundle composed of a plurality of filaments is loosened and dispersed, and is dispersed substantially uniformly in the width direction. Any conventionally known technique may be applied to such a method of opening and spinning.
上記した強化繊維束に含浸される樹脂としては、従来公知のものが用いられ、例えば、不飽和ポリエステル樹脂、ビニルエステル樹脂、エポキシ樹脂、フェノール樹脂、シアネート樹脂及びビスマレイミド樹脂等が挙げられる。 Conventionally known resins are used as the resin impregnated in the reinforcing fiber bundle, and examples thereof include unsaturated polyester resins, vinyl ester resins, epoxy resins, phenol resins, cyanate resins, and bismaleimide resins.
以上、上記した実施形態によれば、複数の強化繊維束に樹脂が含浸された繊維強化樹脂複合材であって、強化繊維束は、炭素繊維フィラメントとガラス繊維フィラメントとが撚り合わされてなるので、繊維強化樹脂複合材を構成する強化繊維束同士の線膨張係数差がなく、外部環境の変化により強化繊維束と樹脂との間で局所的応力が発生することを抑制できる。これにより、長期間に亘る使用に対して優れた耐久性を有する繊維強化樹脂複合材を提供することができる。
また、強化繊維束の一部にガラス繊維フィラメントが用いられているため、ガラス繊維フィラメントと比較して高コストな炭素繊維フィラメントの使用量を低減することができ、繊維強化樹脂複合材のコストを低減することができる。
As described above, according to the embodiment described above, a fiber reinforced resin composite material in which a plurality of reinforcing fiber bundles are impregnated with resin, and the reinforcing fiber bundle is formed by twisting carbon fiber filaments and glass fiber filaments, There is no difference in linear expansion coefficient between the reinforcing fiber bundles constituting the fiber reinforced resin composite material, and it is possible to suppress the occurrence of local stress between the reinforcing fiber bundle and the resin due to a change in the external environment. Thereby, the fiber reinforced resin composite material which has the outstanding durability with respect to the use over a long period of time can be provided.
In addition, since glass fiber filaments are used in a part of the reinforcing fiber bundle, it is possible to reduce the amount of high-cost carbon fiber filaments used compared to glass fiber filaments, and to reduce the cost of the fiber reinforced resin composite material. Can be reduced.
以上のように、本発明の繊維強化樹脂複合材は、耐久性に優れ、かつ低コストであるため、様々な構造体の材料として用いることができ、例えば、軽量で高強度であることが要求される自動車用部材として用いることができる。より具体的には、例えば、自動車の内装材や外装材等として用いることが好適である。 As described above, the fiber-reinforced resin composite material of the present invention is excellent in durability and low in cost, and therefore can be used as a material for various structures, for example, it is required to be lightweight and have high strength. It can be used as a member for automobiles. More specifically, for example, it is preferably used as an interior material or exterior material of an automobile.
以下、実施例に基づいて本発明をより具体的に説明するが、本発明は以下の実施例に限定されるものではない。 EXAMPLES Hereinafter, although this invention is demonstrated more concretely based on an Example, this invention is not limited to a following example.
《繊維強化樹脂複合材の作製》
炭素繊維束としてはＰＡＮ系炭素繊維束（東レ（株）製トレカＴ３００Ｓ（６Ｋ））を用い、ガラス繊維束としてはセントラル硝子（株）製ＥＲＳ２３１０−２５３Ａを用いた。
まず、上記ＰＡＮ系炭素繊維束を開繊した。開繊したＰＡＮ系炭素繊維束に対し、あらかじめ上記ガラス繊維束をばらして得たガラス繊維フィラメントを、ガラス繊維／炭素繊維比で３０重量％加え、これらを撚り合わせて紡糸した。このようにして強化繊維束を形成した。
<< Production of fiber reinforced resin composite >>
A PAN-based carbon fiber bundle (Torayca T300S (6K) manufactured by Toray Industries, Inc.) was used as the carbon fiber bundle, and ERS2310-253A manufactured by Central Glass Co., Ltd. was used as the glass fiber bundle.
First, the PAN-based carbon fiber bundle was opened. A glass fiber filament obtained by separating the glass fiber bundle in advance with respect to the opened PAN-based carbon fiber bundle was added at a glass fiber / carbon fiber ratio of 30% by weight, and these were twisted and spun. In this way, a reinforcing fiber bundle was formed.
続いて、上記形成した強化繊維束を複数用いて平織りシートを作製した。作製した平織りシートを１ｍｍ厚となるように複数積層し、熱可塑性樹脂を含浸した。
これにより、本発明の繊維強化樹脂複合材を作製した。
Subsequently, a plain weave sheet was produced using a plurality of the reinforcing fiber bundles formed above. A plurality of the produced plain weave sheets were laminated so as to have a thickness of 1 mm, and impregnated with a thermoplastic resin.
Thereby, the fiber reinforced resin composite material of the present invention was produced.
また、比較例１として、上記ＰＡＮ系炭素繊維束を開繊することなく、これをそのまま用いて平織りシートを作製し、上記と同様の方法で、比較例１の繊維強化樹脂複合材を作製した。
また、比較例２として、上記ＰＡＮ系炭素繊維束と上記ガラス繊維束を開繊することなくそのまま用いて平織りシートを作製し、上記と同様の方法で、比較例２の繊維強化樹脂複合材を作製した。
Further, as Comparative Example 1, a plain weave sheet was produced using the PAN-based carbon fiber bundle as it was without opening the fiber, and the fiber-reinforced resin composite material of Comparative Example 1 was produced in the same manner as described above. .
Further, as Comparative Example 2, a plain weave sheet was produced using the PAN-based carbon fiber bundle and the glass fiber bundle as they were without opening them, and the fiber-reinforced resin composite material of Comparative Example 2 was prepared in the same manner as described above. Produced.
《繊維強化樹脂複合材の評価》
上記のようにして作製した各繊維強化樹脂複合材を裁断加工して、ＪＩＳ Ｋ７０８２号に準拠して試験片を作製した。
作製した試験片に対して、疲労試験機（島津製作所製 油圧サーボ式強度試験機 Ｅ１００ｋＮ）を用いて周波数１０Ｈｚの正弦波（応力レベル０．７）で荷重を付加する両振り平面曲げ疲労試験を行い、試験片が破壊されるまでの荷重付加の繰り返し数［Ｎ］によって繊維強化樹脂複合材の耐久性を評価した。
<Evaluation of fiber reinforced resin composite material>
Each fiber reinforced resin composite material produced as described above was cut and a test piece was produced according to JIS K7082.
A double-bending plane bending fatigue test in which a load is applied to the prepared test piece with a sine wave (stress level 0.7) at a frequency of 10 Hz using a fatigue tester (Hydraulic Servo Strength Tester E100 kN manufactured by Shimadzu Corporation). The durability of the fiber reinforced resin composite material was evaluated by the number of repetitions [N] of load application until the test piece was broken.
本発明の繊維強化樹脂複合材に対する耐久試験の結果、試験片が破壊されるまでの荷重付加の繰り返し数［Ｎ］は１０５回であった。
また、比較例１の繊維強化樹脂複合材の試験片が破壊されるまでの荷重付加の繰り返し数［Ｎ］は１０５回であった。
また、比較例２の繊維強化樹脂複合材の試験片が破壊されるまでの荷重付加の繰り返し数［Ｎ］は１０４回であった。
Results of the durability test on the fiber-reinforced resin composite material of the present invention, the number of repetitions of the load application to the test piece is broken [N] was 10 5 times.
Further, the number of repetitions of the load application to the test piece of the fiber reinforced resin composite material of Comparative Example 1 is broken [N] was 10 5 times.
Further, the number of repetitions of the load application to the test piece of the fiber reinforced resin composite material of Comparative Example 2 is destroyed [N] was 10 4 times.
これらの結果から、本発明の繊維強化樹脂複合材は、従来の炭素繊維束とガラス繊維束とからなる繊維強化樹脂複合材（比較例２）よりも耐久性に優れ、炭素繊維束のみからなる繊維強化樹脂複合材（比較例１）と同等の耐久性を有していることが示された。また、本発明の繊維強化樹脂複合材は、炭素繊維束のみからなる繊維強化樹脂複合材（比較例１）よりも低コストである点で優れるものである。 From these results, the fiber reinforced resin composite material of the present invention is superior in durability to the fiber reinforced resin composite material (Comparative Example 2) composed of a conventional carbon fiber bundle and a glass fiber bundle, and consists only of the carbon fiber bundle. It was shown that the fiber reinforced resin composite material (Comparative Example 1) has the same durability. Moreover, the fiber reinforced resin composite material of the present invention is superior in that it is lower in cost than the fiber reinforced resin composite material (Comparative Example 1) composed of only carbon fiber bundles.
Claims (2)
前記強化繊維束は、炭素繊維フィラメントとガラス繊維フィラメントとが撚り合わされてなることを特徴とする繊維強化樹脂複合材。 A fiber reinforced resin composite material in which a plurality of reinforcing fiber bundles are impregnated with resin,
The fiber reinforced resin composite material, wherein the reinforcing fiber bundle is formed by twisting carbon fiber filaments and glass fiber filaments.
An automobile member comprising the fiber-reinforced resin composite material according to claim 1.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5777336A (en) * | 1980-10-27 | 1982-05-14 | Hitachi Ltd | Composite fiber product |
| JPS5815679U (en) * | 1981-07-20 | 1983-01-31 | ニチアス株式会社 | welding spark catcher cloth |
| JPH05247233A (en) * | 1992-01-09 | 1993-09-24 | Toyota Motor Corp | Friction material |
| JPH0791435A (en) * | 1993-09-20 | 1995-04-04 | Toray Ind Inc | Propeller shaft and its manufacture |
| WO2008105225A1 (en) * | 2007-02-27 | 2008-09-04 | Nec Corporation | Carbon-fiber roving, long-fiber pellet containing the same, and fiber-reinforced resin molding |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5777336A (en) * | 1980-10-27 | 1982-05-14 | Hitachi Ltd | Composite fiber product |
| JPS5815679U (en) * | 1981-07-20 | 1983-01-31 | ニチアス株式会社 | welding spark catcher cloth |
| JPH05247233A (en) * | 1992-01-09 | 1993-09-24 | Toyota Motor Corp | Friction material |
| JPH0791435A (en) * | 1993-09-20 | 1995-04-04 | Toray Ind Inc | Propeller shaft and its manufacture |
| WO2008105225A1 (en) * | 2007-02-27 | 2008-09-04 | Nec Corporation | Carbon-fiber roving, long-fiber pellet containing the same, and fiber-reinforced resin molding |
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