JP4844908B2 - 耐衝撃性繊維強化プラスチック及び多層構造体 - Google Patents
耐衝撃性繊維強化プラスチック及び多層構造体 Download PDFInfo
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Description
本発明に係る耐衝撃性繊維強化プラスチックに用いられる高強度繊維としては、引張強度が17cN/dtex以上のものが好ましく、17〜45cN/dtexsのものがより好ましく、19〜40cN/dtexのものがさらに好ましい。また、高強度繊維の弾性率としては、300〜2000cN/dtexが好ましく、350〜1800cN/dtexがさらに好ましい。このような特性を備えた高強度繊維としては、特に限定されるものではなく、例えば、芳香族ポリアミド(アラミド)、芳香族ポリエーテルアミド、全芳香族ポリエステル、超高分子量ポリエチレン、ポリビニルアルコール、ポリパラフェニレンベンゾビスオキサゾール、ポリベンズイミダゾール、ポリイミド、ポリエーテルエーテルケトン、ポリエーテルイミド、ポリフェニレンサルファイド、ノボロイド、ポリピリドビスイミダゾール、ポリアリレート、ポリケトン、ポリテトラフルオロエチレン、ポリオキシメチレン、ポリアクリロニトリル、ポリアミドイミド、ポリエーテルケトンなどからなる繊維、炭素繊維、セラミック繊維、ガラス繊維などが好ましく使用でき、耐衝撃性、生産性、価格などからアラミド繊維、超高分子量ポリエチレン、ポリパラフェニレンベンゾビスオキサゾール、ポリピリドビスイミダゾールがさらに好ましく使用できる。また、これら高強度繊維の繊度としては、100〜7000dtexであることが好ましく、200〜3500dtexの範囲がさらに好ましいが、特に限定されるものではない。
ば特に限定されるものではないが、アルミナ類、窒化類、珪石類、ボロン類、マグネシア類などや、これらセラミックスの混合焼成物、セラミックスが金属補強された構成物、セラミックスが繊維補強された構成物、炭素繊維等の耐熱性繊維でセラミックスを強靱化した繊維複合セラミックスやセラミックス粒子、ウィスカ、短繊維、連続長繊維で強化したセラミックス基複合材料(例えば、炭化珪素繊維/炭化珪素マトリックス複合材)などが好ましく使用できる。耐衝撃性、軽量性、強度、価格などからアルミナ類、窒化類、珪石類、ボロン類がさらに好ましく使用できる。アルミナ類であれば、純度が85%以上であることが好ましい。純度が85%未満であれば添加物の量の関係から、高速の飛来物衝突時のエネルギー吸収性能が低下する。
原糸強度20cN/dtex、弾性率500cN/dtexのアラミド繊維(総繊度3300dtex)を使用した平織織布(目付:460g/m2、織り密度17本/2.54cm、厚さ0.64mm)にフェノール樹脂(ポリビニルブーチラール主成分)を含浸、乾燥して樹脂分10wt%のプリプレグを得た。10wt%のプリプレグ7枚、樹脂なし平織織布7枚を交互に積層し、150℃、50kg/cm2 、30分加熱加圧成形して耐衝撃性繊維強化プラスチックを得た。
実施例1のプリプレグの使用し、10wt%のプリプレグを7枚積層した層((a)層)と10wt%のプリプレグ4枚、樹脂なし平織織布3枚を交互に積層した層((b)層)の積層構成(1)とした積層品を実施例1の方法で成形し、耐衝撃性繊維強化プラスチックを得た。
実施例1の10wt%のプリプレグを使用し、プリプレグ6枚積層した層((a)層)とプリプレグ3枚、樹脂なし平織織布3枚を交互に積層した層((b)層)、プリプレグ2枚積層した層((c)層)の積層構成(2)とした積層品を実施例1の方法で成形し、耐衝撃性繊維強化プラスチックを得た。
実施例3の耐衝撃性繊維強化プラスチックにアルミナセラミックス(純度92%、比重3.6g/cm3、重量18kg/m2、大きさ10cmの正方形、厚み5mm)を15cm角の高強度繊維強化プラスチックにウレタン系接着剤で固定し多層構造体を得た。
実施例1の10wt%のプリプレグを14枚積層し、実施例1の条件、方法で耐衝撃性繊維強化プラスチックを得た。
比較例1の高強度繊維強化プラスチックと実施例4のアルミナセラミックスとをウレタン系接着剤で固定し多層構造体を得た。
Claims (5)
- 高強度繊維からなる耐衝撃性繊維強化プラスチックであって、高強度繊維布帛に対する樹脂の付着量が3〜30wt%であるプリプレグを積層した層(a)と前記高強度繊維布帛に対する樹脂の付着量が3〜30wt%であるプリプレグと樹脂なし高強度繊維布帛を交互に積層し該交互積層を3回以上繰り返した層(b)を加熱加圧成形してなり、前記層(a)が飛来物の衝突面側に配置されていることを特徴とする耐衝撃性繊維強化プラスチック。
- 前記層(a)、層(b)、前記高強度繊維布帛に対する樹脂の付着量が3〜30wt%であるプリプレグを積層した層(c)の順に積層してなることを特徴とする、請求項1記載の耐衝撃性繊維強化プラスチック。
- 請求項1または2に記載の耐衝撃性繊維強化プラスチックに接着剤を介してセラミックスまたは金属を積層してなることを特徴とする多層構造体。
- 防護チョッキやヘルメット、車輌、艦船、航空機の付加装甲に用いられることを特徴とする、請求項1または2に記載の耐衝撃性繊維強化プラスチック。
- 防護チョッキやヘルメット、車輌、艦船、航空機の付加装甲に用いられることを特徴とする、請求項3に記載の多層構造体。
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JP5761867B2 (ja) * | 2013-01-21 | 2015-08-12 | 株式会社日本製鋼所 | 繊維強化された樹脂基材又は樹脂成形体の製造方法及びこの製造方法に使用する可塑化吐出機 |
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JP2018021718A (ja) * | 2016-08-04 | 2018-02-08 | スターライト工業株式会社 | 防刃防突刺し用保護材及びそれを用いた防護用具 |
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