JP3845427B2 - 熱可塑成形に用いられる繊維強化複合材料の製造方法 - Google Patents
熱可塑成形に用いられる繊維強化複合材料の製造方法 Download PDFInfo
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Description
1)強化用繊維と熱可塑性樹脂繊維の紡績糸との混合糸を、管状炉内で連続的に前記熱可塑性樹脂繊維の溶融もしくは軟化温度に加熱し、加熱下で撚り合わせることにより強化用繊維と熱可塑性樹脂繊維を複合化した後、所定長さに切断することを特徴とする繊維強化複合材料の製造方法、
2)強化用繊維が、炭素繊維、金属繊維及び有機繊維から選ばれる少なくとも一種である前記1)記載の製造方法、
3)有機繊維が、全芳香族ポリアミド繊維、全芳香族ポリエステル繊維及びヘテロ環芳香族繊維から選ばれる少なくとも一種である前記2)記載の製造方法、
4)熱可塑性樹脂繊維が、ポリプロピレン樹脂、ポリアミド樹脂、ポリフェニレンサルファイド樹脂及びポリエーテルケトン樹脂から選ばれる少なくとも一種の樹脂よりなる繊維である前記1)〜3)のいずれか1項記載の製造方法、
5)強化用繊維と熱可塑性樹脂繊維の融点もしくは軟化点の差が5℃以上である前記1)〜4)のいずれか1項記載の製造方法、
6)前記1)〜5)のいずれか1項記載の方法により製造された繊維強化複合材料を成形してなることを特徴とする成形品、
7)補強用、摩擦・摺動用、自動車、船舶等産業用の機械要素、電気・電子機器、AV機器、OA機器、建築用の部品・部材、建材、建具、パッキン類又はシール類であることを特徴とする前記6)記載の成形品。
式(1)のR1は樹脂に反応あるいは強い相互作用をする有機基であり、R2は炭素原子数1〜4のアルキル基である。
(マトリックス)+<強化繊維>+≪改質繊維≫
1.(ポリプロピレン)+<炭素繊維>+≪フッ素樹脂繊維≫
2.(ナイロン66)+<アラミド繊維>+≪炭素繊維≫
3.(ポリフェニレンサルファイド)+<金属繊維>
4.(ポリエーテルケトン)+<PBO繊維>+≪炭素繊維≫
繊維太さ2.2dtex、繊維長75mmのナイロン6短繊維と、繊維太さ11dtex、繊維長75mmのナイロン66短繊維を、ナイロン6:ナイロン66(質量比)=2:1の割合で、従来公知の混紡糸の製造方法に従って混紡糸を得た。すなわち、調合機で混ぜ合わせ、ついでカード工程を経て篠糸(スライバー)を形成させ巻き取った後、リング精紡機で170回/mの撚り(撚り係数k=7602)を加え、太さ2000dtexの混紡糸を製造した。
(2)耐トラッキング性:IEC PUB1.112
(3)燃焼性:3.2mm×127mm×13mmの燃焼試験片を作成し、UL−94水平燃焼試験に定められている評価基準に従い、難燃性を評価した。燃焼時のドリップ性(ドリップ有り又はドリップ無し)は視覚にて判定した。
(4)引張強度:ISO 527−1,2
(5)収縮率:射出成形機(IS−80)を用いて、厚み3mm、80mm×80mmの角板を成形し、収縮率を測定した。
(6)摺動特性:JIS K7218−A法に準じ、下記の条件により動摩擦係数および摩耗量を評価した。
試験機:高千穂製 回転動型摩擦摩耗試験機IIIT−2000−5000N
相手材:鋼材S45C
荷重:300N
摺動速度:0.5m/s
50質量%のナイロン66ペレットと繊維径13μm、繊維長3mmのガラス繊維30質量%、臭素系難燃剤と三酸化アンチモンの混合物約20質量%をスクリュー径30mmφの二軸押出機にて樹脂温度270℃で溶融混練し、ペレットを得た。得られたペレットについて、実施例1と同様に物性値を測定した。結果を表1に併せて示す。
比較例1と同様の方法でガラス繊維の代わりに実施例1で用いたのと同じケブラー繊維を溶融混練しようとしたが、ケブラー繊維が綿状に固まり、押出機のホッパーに詰まってしまい、目的のペレットを得ることができなかった。
Claims (7)
- 強化用繊維と熱可塑性樹脂繊維の紡績糸との混合糸を、管状炉内で連続的に前記熱可塑性樹脂繊維の溶融もしくは軟化温度に加熱し、加熱下で撚り合わせることにより強化用繊維と熱可塑性樹脂繊維を複合化した後、所定長さに切断することを特徴とする繊維強化複合材料の製造方法。
- 強化用繊維が、炭素繊維、金属繊維及び有機繊維から選ばれる少なくとも一種である請求項1記載の製造方法。
- 有機繊維が、全芳香族ポリアミド繊維、全芳香族ポリエステル繊維及びヘテロ環芳香族繊維から選ばれる少なくとも一種である請求項2記載の製造方法。
- 熱可塑性樹脂繊維が、ポリプロピレン樹脂、ポリアミド樹脂、ポリフェニレンサルファイド樹脂及びポリエーテルケトン樹脂から選ばれる少なくとも一種の樹脂よりなる繊維である請求項1〜3のいずれか1項記載の製造方法。
- 強化用繊維と熱可塑性樹脂繊維の融点もしくは軟化点の差が5℃以上である請求項1〜4のいずれか1項記載の製造方法。
- 請求項1〜5のいずれか1項記載の方法により製造された繊維強化複合材料を成形してなることを特徴とする成形品。
- 補強用、摩擦・摺動用、自動車、船舶等産業用の機械要素、電気・電子機器、AV機器、OA機器、建築用の部品・部材、建材、建具、パッキン類又はシール類であることを特徴とする請求項6記載の成形品。
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JP2009024057A (ja) * | 2007-07-18 | 2009-02-05 | Calp Corp | 複合繊維強化熱可塑性樹脂ペレット、および、成型体 |
CN114060279B (zh) * | 2021-11-15 | 2024-05-28 | 中国科学院苏州纳米技术与纳米仿生研究所 | 耐高温仿生驱动器、其制备方法、制备系统及测试方法 |
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