JP2017508896A - 多孔性支持体、その製造方法及びそれを含む強化膜 - Google Patents
多孔性支持体、その製造方法及びそれを含む強化膜 Download PDFInfo
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- JP2017508896A JP2017508896A JP2016553858A JP2016553858A JP2017508896A JP 2017508896 A JP2017508896 A JP 2017508896A JP 2016553858 A JP2016553858 A JP 2016553858A JP 2016553858 A JP2016553858 A JP 2016553858A JP 2017508896 A JP2017508896 A JP 2017508896A
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- D06C7/00—Heating or cooling textile fabrics
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Abstract
Description
多孔度(%)=(ナノウェブ内の空気の体積/多孔性支持体の全体積)×100
寸法安定性=[(膨潤後の長さ−膨潤前の長さ)/膨潤前の長さ]×100
(実施例1)
粘度が2,600poiseであるポリアミック酸をジメチルホルムアミド溶媒に溶解させ、固形分が12.5重量%であり、620poiseである紡糸溶液5Lを製造した。製造された紡糸溶液を溶液タンクに移送した後、これを、定量ギヤポンプを通して、ノズルが26個で構成され、高電圧が49kVで印加された紡糸チャンバーに供給し、紡糸して、ナノウェブ前駆体を製造した。このとき、溶液供給量は1.0ml/minであり、ノズル先端の間の距離と、ノズル中心の間の距離との比は1.02であった。
実施例1において、ナノウェブ前駆体を硬化する前に116.7kgf/cmの圧力及び80℃の温度下でカレンダリングした以外は、実施例1と同様の方法により多孔性支持体を製造した。
実施例1において、硬化温度を490℃に変更した以外は、実施例1と同様の方法により多孔性支持体を製造した。
粘度が2,600poiseであるポリアミック酸をジメチルホルムアミド溶媒に溶解させ、固形分が14重量%であり、900poiseである紡糸溶液5Lを製造した。製造された紡糸溶液を溶液タンクに移送した後、これを、定量ギヤポンプを通して、ノズルが26個で構成され、高電圧が49kVで印加された紡糸チャンバーに供給し、紡糸して、ナノウェブ前駆体を製造した。このとき、溶液供給量は1.0ml/minであり、ノズル先端の間の距離と、ノズル中心の間の距離との比は1.02であった。
比較例1において、紡糸溶液として、粘度が2,600poiseであるポリアミック酸をジメチルホルムアミド溶媒に溶解させ、固形分が11重量%であり、170poiseである紡糸溶液を使用した以外は、比較例1と同様の方法により多孔性支持体を製造した。
比較例1において、ナノウェブ前駆体を1分間熱硬化した以外は、比較例1と同様の方法により多孔性支持体を製造した。
前記実施例及び比較例で製造した多孔性支持体に対して物性を測定し、その結果を下記の表1に示す。
前記実施例及び比較例で製造した多孔性支持体を用いて強化膜を製造する工程の容易性、及び多孔性支持体で製造された強化膜の性能を評価し、その結果を下記の表2に示す
Claims (14)
- ナノ繊維が多数の気孔を有する不織布の形態で集積されてなるナノウェブを含み、前記ナノウェブは70〜95%の多孔度及び1〜10%の切断伸度を有する、多孔性支持体。
- 前記ナノウェブは10〜50MPaの引張強度を有する、請求項1に記載の多孔性支持体。
- 前記ナノウェブは5〜50μmの平均厚さを有する、請求項1に記載の多孔性支持体。
- 前記ナノウェブは、坪量が2〜10g/cm2である、請求項1に記載の多孔性支持体。
- 前記ナノウェブは、10,204gfの荷重下で0.7〜5%の中間伸度を有する、請求項1に記載の多孔性支持体。
- 前記ナノウェブはポリイミドナノウェブである、請求項1に記載の多孔性支持体。
- 紡糸溶液を紡糸して、ナノ繊維が多数の気孔を有する不織布の形態で集積されたナノウェブ前駆体を製造し、前記ナノウェブ前駆体をナノウェブ前駆体におけるMD側の張力とTD側の張力が同じである状態でロールツーロール方式で移送させながら前記ナノウェブ前駆体を硬化することを含む、多孔性支持体の製造方法。
- 前記紡糸溶液は、固形分11.5〜13.5重量%でポリアミック酸を含む溶液である、請求項7に記載の多孔性支持体の製造方法。
- 前記ナノウェブ前駆体を硬化する前に、ナノウェブ前駆体を80〜200kgf/cmの線圧力下でカレンダリングすることをさらに含む、請求項7に記載の多孔性支持体の製造方法。
- 前記ナノウェブ前駆体を硬化することは、ナノウェブ前駆体の横方向の硬化収縮率が5〜15%になるようにナノウェブ前駆体を硬化することを含む、請求項7に記載の多孔性支持体の製造方法。
- 前記ナノウェブ前駆体を硬化することは、ナノウェブ前駆体を80〜650℃の温度で硬化することを含む、請求項7に記載の多孔性支持体の製造方法。
- 前記ナノウェブ前駆体をロールツーロール方式で移送させることは、ナノウェブ前駆体を無張力状態でロールツーロール方式で移送させることである、請求項7に記載の多孔性支持体の製造方法。
- 前記ナノウェブ前駆体をロールツーロール方式で移送させることは、前記ナノウェブ前駆体をローラーで巻いて移送させ、ローラーによってナノウェブ前駆体の機械方向に加えられる張力と同じ大きさの張力をナノウェブ前駆体の横方向に加えながらナノウェブ前駆体を移送させることである、請求項7に記載の多孔性支持体の製造方法。
- 請求項1に記載の多孔性支持体と、
前記多孔性支持体の気孔を充填しているイオン交換ポリマーとを含む、強化膜。
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PCT/KR2015/001764 WO2015130061A1 (ko) | 2014-02-25 | 2015-02-24 | 다공성 지지체, 이의 제조방법 및 이를 포함하는 강화막 |
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