JPWO2018083734A1 - 複合材料用強化基材、複合材料および複合材料用強化基材の製造方法 - Google Patents
複合材料用強化基材、複合材料および複合材料用強化基材の製造方法 Download PDFInfo
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Abstract
Description
a2(補助繊維120の間隔(X軸)):c(ステッチ糸130の間隔(X軸))の3〜6倍の範囲である。
図4を参照して、強化基材100の製造装置300について説明する。
図6を参照して、複合材料10の成形装置400について説明する。
次に、実施形態に係る強化基材100、101、102の製造方法を説明する。
次に、実施形態に係る複合材料10の成形方法を説明する。複合材料10の成形方法は、生産性が高く量産に適したRTM(Resin Transfer Molding)成形法を用いる。RTM成形法にあっては、強化基材100を成形型410(図6を参照)に配置し、樹脂200を含浸させて硬化させることによって複合材料10を成形する。
実施形態に係る強化基材の積層体140、対比例に係る強化基材の積層体145を用いて行った賦形実験について説明する。
100、101、102 強化基材(複合材料用強化基材)、
110 強化繊維、
115 強化層
120 補助繊維、
130 ステッチ糸、
140 実施形態の積層体、
145 対比例に係る積層体、
150 エンボス賦形型、
151 下型、
160 シワ、
200 樹脂、
300 強化基材の製造装置、
310 ボビン、
320 配向部、
330 積層部、
340 ステッチ部、
341 編み針、
350 ベルトコンベア、
360 巻き取りローラ、
410 成形型、
420 プレス部、
430 樹脂注入部、
500 制御部。
先行技術文献
特許文献
[0005]
特許文献1:特開2001−55642号公報
特許文献2:特開2015−145547号公報
特許文献3:特開2008−132775号公報
発明の概要
発明が解決しようとする課題
[0006]
特許文献2および特許文献3に開示されたNCF基材は、一方向に配列された繊維を2方向以上に配向して積層し、交差する繊維同士を縫合(ステッチ)して固定する「多軸基材」が用いられている。しかしながら、多軸基材は、複数の方向に配向された繊維が縫合して固定されることによって、クロス基材に比べて、伸びが少なく、賦形性が悪い。このため、基材を賦形したときに、その形状によっては部分的にシワが生じてしまう。シワが生じると複合材料用の強化基材として十分な機能を発揮できなくなることから、賦形するときの形状の自由度が制限されるという問題がある。
[0007]
そこで、本発明は、上記課題を解決するためになされたものであり、賦形性を改善することができる複合材料用強化基材、複合材料および複合材料用強化基材の製造方法を提供することを目的とする。
課題を解決するための手段
[0008]
上記目的を達成する本発明に係る複合材料用強化基材は、複合材料を成形するときに使用される。強化基材は、強化繊維の繊維方向が一方向に配列された強化層と、繊維方向に対して交差する一つの方向にのみ沿うように強化層の片面のみに積層され、強化繊維に接合されて強化層を保持する補助繊維と、を有している。補助繊維は、強化繊維よりも引張破断伸びが大きい。
[0009]
上記目的を達成する本発明に係る複合材料は、強化基材に樹脂が配置されてなる。複合材料における強化基材は、強化繊維の繊維方向が一方向に配列された強化層と、繊維方向に対して交差する一つの方向にのみ沿うように強
化層の片面のみに積層され、強化繊維に接合されて強化層を保持する補助繊維と、を有している。補助繊維は、強化繊維よりも引張破断伸びが大きい。
[0010]
上記目的を達成する本発明に係る複合材料用強化基材の製造方法は、強化繊維の繊維方向が一方向に配列された強化層を形成するように強化繊維を配置する。強化繊維よりも引張破断伸びが大きい補助繊維を、繊維方向に対して交差する一つの方向にのみ沿うように強化層の片面のみに積層する。そして、強化繊維に補助繊維を接合して強化層を保持する。
図面の簡単な説明
[0011]
[図1]強化基材の種類と製造コストとの関係を示す系統図である。
[図2]実施形態に係る強化基材を示す概略斜視図である。
[図3A]図2に示した強化基材を使用した複合材料を示す概略断面図である。
[図3B]補助繊維を配置するときの条件の一例を示す図である。
[図4]強化基材の製造装置を示す概略図である。
[図5]強化基材の製造装置のボビンの配置を示す概略図である。
[図6]複合材料の成形装置を示す概略図である。
[図7A]強化基材の製造方法を示すフローチャートである。
[図7B]複合材料の成形方法を示すフローチャートである。
[図8A]強化基材の製造装置を用いて強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図8B]強化基材の製造装置を用いて強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図8C]強化基材の製造装置を用いて強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図9A]対比例に係る強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図9B]対比例に係る強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図10]本実施形態に係る強化基材を積層した積層体を示す概略断面図である
先行技術文献
特許文献
[0005]
特許文献1:特開2001−55642号公報
特許文献2:特開2015−145547号公報
特許文献3:特開2008−132775号公報
発明の概要
発明が解決しようとする課題
[0006]
特許文献2および特許文献3に開示されたNCF基材は、一方向に配列された繊維を2方向以上に配向して積層し、交差する繊維同士を縫合(ステッチ)して固定する「多軸基材」が用いられている。しかしながら、多軸基材は、複数の方向に配向された繊維が縫合して固定されることによって、クロス基材に比べて、伸びが少なく、賦形性が悪い。このため、基材を賦形したときに、その形状によっては部分的にシワが生じてしまう。シワが生じると複合材料用の強化基材として十分な機能を発揮できなくなることから、賦形するときの形状の自由度が制限されるという問題がある。
[0007]
そこで、本発明は、上記課題を解決するためになされたものであり、賦形性を改善することができる複合材料用強化基材、複合材料および複合材料用強化基材の製造方法を提供することを目的とする。
課題を解決するための手段
[0008]
上記目的を達成する本発明に係る複合材料用強化基材は、複合材料を成形するときに使用される。強化基材は、強化繊維の繊維方向が一方向に配列された強化層と、繊維方向に対して交差する一つの方向にのみ沿うように強化層の片面のみに積層され、強化繊維に接合されて強化層を保持する補助繊維と、を有している。補助繊維は、強化繊維よりも引張破断伸びが大きい。強化層は、強化繊維の本数がレギュラートゥよりも多いラージトゥの繊維束が開繊しない状態のまま配列されている。
[0009]
上記目的を達成する本発明に係る複合材料は、強化基材に樹脂が配置されてなる。複合材料における強化基材は、強化繊維の繊維方向が一方向に配列
された強化層と、繊維方向に対して交差する一つの方向にのみ沿うように強化層の片面のみに積層され、強化繊維に接合されて強化層を保持する補助繊維と、を有している。補助繊維は、強化繊維よりも引張破断伸びが大きい。強化層は、強化繊維の本数がレギュラートゥよりも多いラージトゥの繊維束が開繊しない状態のまま配列されている。
[0010]
上記目的を達成する本発明に係る複合材料用強化基材の製造方法は、強化繊維の繊維方向が一方向に配列された強化層を形成するように強化繊維を配置する。強化層は、強化繊維の本数がレギュラートゥよりも多いラージトゥの繊維束を、開繊しない状態のまま配置して形成する。強化繊維よりも引張破断伸びが大きい補助繊維を、繊維方向に対して交差する一つの方向にのみ沿うように強化層の片面のみに積層する。そして、強化繊維に補助繊維を接合して強化層を保持する。
図面の簡単な説明
[0011]
[図1]強化基材の種類と製造コストとの関係を示す系統図である。
[図2]実施形態に係る強化基材を示す概略斜視図である。
[図3A]図2に示した強化基材を使用した複合材料を示す概略断面図である。
[図3B]補助繊維を配置するときの条件の一例を示す図である。
[図4]強化基材の製造装置を示す概略図である。
[図5]強化基材の製造装置のボビンの配置を示す概略図である。
[図6]複合材料の成形装置を示す概略図である。
[図7A]強化基材の製造方法を示すフローチャートである。
[図7B]複合材料の成形方法を示すフローチャートである。
[図8A]強化基材の製造装置を用いて強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図8B]強化基材の製造装置を用いて強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図8C]強化基材の製造装置を用いて強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図9A]対比例に係る強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図9B]対比例に係る強化基材を製造する手順を説明するための図であって、縫合工程を示す概略図である。
[図10]本実施形態に係る強化基材を積層した積層体を示す概略断面図である
Claims (16)
- 複合材料を成形するときに使用される強化基材であって、
強化繊維の繊維方向が一方向に配列された強化層と、
前記繊維方向に対して交差する一つの方向にのみ沿うように前記強化層に積層され、前記強化繊維に接合されて前記強化層を保持する補助繊維と、を有し、
前記補助繊維は、前記強化繊維よりも引張破断伸びが大きい、複合材料用強化基材。 - 前記補助繊維は、前記強化繊維よりも弾性係数が低い、請求項1に記載の複合材料用強化基材。
- 前記強化繊維と前記補助繊維とを縫合して接合するステッチ糸をさらに有する、請求項1または請求項2に記載の複合材料用強化基材。
- 前記強化層は、前記強化繊維の本数がレギュラートゥよりも多いラージトゥの繊維束が開繊しない状態のまま配列されてなる、請求項1〜3のいずれか1項に記載の複合材料用強化基材。
- 前記強化層の一層あたりの目付量は、300〜400g/m2である、請求項1〜4のいずれか1項に記載の複合材料用強化基材。
- 強化基材に樹脂が配置されてなる複合材料であって、
前記強化基材は、
強化繊維の繊維方向が一方向に配列された強化層と、
前記繊維方向に対して交差する一つの方向にのみ沿うように前記強化層に積層され、前記強化繊維に接合されて前記強化層を保持する補助繊維と、を有し、前記補助繊維が前記強化繊維よりも引張破断伸びが大きい、複合材料。 - 前記補助繊維は、前記強化繊維よりも弾性係数が低い、請求項6に記載の複合材料。
- 前記強化繊維と前記補助繊維とを縫合して接合するステッチ糸をさらに有する、請求項6または請求項7に記載の複合材料。
- 前記強化層は、前記強化繊維の本数がレギュラートゥよりも多いラージトゥの繊維束が開繊しない状態のまま配列されてなる、請求項6〜8のいずれか1項に記載の複合材料。
- 樹脂が配置される前の状態の前記強化基材における前記強化層の一層あたりの目付量は、300〜400g/m2である、請求項6〜9のいずれか1項に記載の複合材料。
- 強化繊維の繊維方向が一方向に配列された強化層を形成するように前記強化繊維を配置し、
前記強化繊維よりも引張破断伸びが大きい補助繊維を、前記繊維方向に対して交差する一つの方向にのみ沿うように前記強化層に積層し、
前記強化繊維に前記補助繊維を接合して前記強化層を保持する、複合材料用強化基材の製造方法。 - 前記補助繊維は、前記強化繊維よりも弾性係数が低い、請求項11に記載の複合材料用強化基材の製造方法。
- 前記強化繊維と前記補助繊維とをステッチ糸によって縫合して接合する、請求項11または請求項12に記載の複合材料用強化基材の製造方法。
- 前記強化繊維の配置を基に、前記補助繊維の配置および前記ステッチ糸によって縫合する位置を制御する、請求項13に記載の複合材料用強化基材の製造方法。
- 前記強化繊維の本数がレギュラートゥよりも多いラージトゥの繊維束を、開繊しない状態のまま配置して前記強化層を形成する、請求項11〜14のいずれか1項に記載の複合材料用強化基材の製造方法。
- 前記強化層の一層あたりの目付量を300〜400g/m2とする、請求項11〜15のいずれか1項に記載の複合材料用強化基材の製造方法。
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CN109923253B (zh) | 2020-03-31 |
US20190240953A1 (en) | 2019-08-08 |
CN109923253A (zh) | 2019-06-21 |
US11173687B2 (en) | 2021-11-16 |
EP3536840B1 (en) | 2020-12-16 |
WO2018083734A1 (ja) | 2018-05-11 |
EP3536840A4 (en) | 2019-11-27 |
JP6699752B2 (ja) | 2020-05-27 |
EP3536840A1 (en) | 2019-09-11 |
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