JP2017519054A - 熱可塑性プリプレグの製造方法及びそれにより製造された熱可塑性プリプレグ - Google Patents
熱可塑性プリプレグの製造方法及びそれにより製造された熱可塑性プリプレグ Download PDFInfo
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
熱可塑性樹脂フィルム5mgを試料としてアルミファンに採取し、示差走査熱量計を用いて測定した。まず、窒素雰囲気下で、室温から260℃まで10℃/分で昇温(1次ラン(run))して10分間保持した後、続けて20℃まで10℃/分の速度で冷却して5分間保持した。その後、さらに10℃/分で昇温(2次ラン)した時に観測される融解ピークについて融点(Tm)±10℃の温度領域に存在する融解を非結晶融解ピークにし、ガラス温度(Tc)で観察される領域を結晶融解ピークにして、高温側の平坦部を基準としたベースラインとピークに取り囲まれた領域の面積から融点での熱容量(△Hm)とガラス温度(Tc)での熱容量(△Hc)を求め、100%結晶化された熱可塑性樹脂フィルムの理論的熱容量値(△Hm、Zero)を求めた後、次の計算式で結晶化度を計算した。
△Hm:融点(Tm)での熱容量
△Hc:ガラス温度(Tc)での熱容量
△Hm、zero:100%結晶化された熱可塑性樹脂フィルムの理論熱容量
前記熱可塑性樹脂フィルムの厚さは3〜100μm、好ましくは7〜65μmであることがよい。前記厚さが100μmを超えると、熱可塑性樹脂フィルムの表面と繊維基材の表面との接触部分で熱可塑性樹脂フィルムが均一に溶融されないため、繊維基材内に熱可塑性樹脂が均一に含浸されにくくなる。また、前記厚さが3μm未満の場合には、小さな外力でも熱可塑性樹脂フィルムが破れやすくなって、工程性が低下する恐れがある。
炭素繊維織物(繊維基材)の上面に結晶化度が4%であり、厚さが10μmであるポリエステル樹脂フィルムを積層させた後、ポリエステル樹脂フィルムの温度が300℃になるように加熱した。次に、20kg/cmの圧力で加圧して熱可塑性プリプレグを製造した。
アラミド繊維(繊維基材)の上面に結晶化度が8%であり、厚さが50μmであるポリエチレン樹脂フィルムを積層させた後、ポリエチレン樹脂フィルムの温度が200℃になるように加熱した。次に、80kg/cmの圧力で加熱加圧して、熱可塑性プリプレグを製造した。
また、製造された熱可塑性プリプレグを構成するアラミド繊維(繊維基材)の間の層間接着力が62.8Mpaで優れた。
炭素繊維不織布(繊維基材)の上面に結晶化度が19%であり、厚さが90μmであるポリアミド6樹脂フィルムを積層させた後、ポリアミド6樹脂フィルムの温度が260℃になるように加熱した。次に、130kg/cmの圧力で加圧して熱可塑性プリプレグを製造した。
炭素繊維織物(繊維基材)の上面に結晶化度が30%であり、厚さが10μmであるポリエステル樹脂フィルムを積層させた後、ポリエステル樹脂フィルムが320℃になるように加熱した。次に、20kg/cmの圧力で加圧して熱可塑性プリプレグを製造した。
Claims (10)
- 繊維基材の少なくとも一面上に結晶化度が1〜20%である熱可塑性樹脂フィルムを積層した後、熱可塑性樹脂フィルムの融点より高い温度に加熱して加圧することを特徴とする熱可塑性プリプレグの製造方法。
- 熱可塑性樹脂フィルムの結晶化度が3〜12%であることを特徴とする請求項1に記載の熱可塑性プリプレグの製造方法。
- 熱可塑性樹脂フィルムの厚さが3〜100μmであることを特徴とする請求項1に記載の熱可塑性プリプレグの製造方法。
- 熱可塑性樹脂フィルムの厚さが7〜65μmであることを特徴とする請求項1に記載の熱可塑性プリプレグの製造方法。
- 熱可塑性樹脂フィルムの融点より30〜100℃高い温度で、10〜150kg/cmの圧力で加圧することを特徴とする請求項1に記載の熱可塑性プリプレグの製造方法。
- 繊維基材:熱可塑性樹脂フィルムの重量比を40〜90重量%:10〜60重量%に調節することを特徴とする請求項1に記載の熱可塑性プリプレグの製造方法。
- 熱可塑性樹脂フィルムはポリアミド樹脂フィルム、ポリプロピレン樹脂フィルム、ポリエステル樹脂フィルム、熱可塑性ポリウレタン樹脂フィルム、ポリラクチド樹脂フィルム、ポリエチレン樹脂フィルム、ポリブチレンテレフタレート樹脂フィルム、ポリフェニレンサルファイド樹脂フィルム、テフロン樹脂フィルムとポリエーテルエーテルケトン樹脂フィルムの中から選択された1種であることを特徴とする請求項1に記載の熱可塑性プリプレグの製造方法。
- 請求項1〜7のいずれかに記載の方法で製造され、繊維基材内に熱可塑性樹脂が含浸されたことを特徴とする熱可塑性プリプレグ。
- 熱可塑性樹脂の含有量が熱可塑性プリプレグの総重量対比10〜60重量%であることを特徴とする請求項8に記載の熱可塑性プリプレグ。
- 熱可塑性プリプレグの単位面積当たりの重量変化率が1〜7%であることを特徴とする請求項8に記載の熱可塑性プリプレグ。
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KR102108053B1 (ko) | 2018-08-31 | 2020-05-11 | 국방과학연구소 | 고인성, 고강도 및 내열성 특성을 가진 프리프레그 제조 방법 및 이 방법에 의해 제조된 프리프레그 |
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KR20150116787A (ko) | 2015-10-16 |
EP3130452A4 (en) | 2017-11-29 |
US20170001385A1 (en) | 2017-01-05 |
EP3130452A1 (en) | 2017-02-15 |
KR102206857B9 (ko) | 2022-04-15 |
WO2015156564A1 (ko) | 2015-10-15 |
EP3130452B1 (en) | 2020-04-29 |
US10189217B2 (en) | 2019-01-29 |
JP6342012B2 (ja) | 2018-06-13 |
KR102206857B1 (ko) | 2021-01-25 |
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