JP5064409B2 - 半結晶性高分子の微多孔膜及びその製造方法 - Google Patents
半結晶性高分子の微多孔膜及びその製造方法 Download PDFInfo
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- B29K2023/065—HDPE, i.e. high density polyethylene
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- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
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Description
半結晶性高分子の分子量及び分子量分布の測定はPolymer Laboratory社の高温GPC(Gel Permeation Chromatography)で測定された。
C=(8FTV)/(πD2(P2−1))
ここで、C=Darcy透過度常数
F=流速
T=サンプル厚さ
V=気体の粘度(0.185 for N2)
D=サンプル直径
P=圧力
半結晶性高分子として重量平均分子量が3.0×105g/molの高密度ポリエチレンが使用され、希釈剤としてはジブチルフタレートが使用された。半結晶性高分子と希釈剤の重量比は40/60であり、体積率は42.4/57.6であった。この組成物は液−液相分離が生じる組成物であり、押出機内で相分離以下の温度における滞留時間は100秒であった。この際の押出温度は250℃であり、押出機内の相分離温度は180℃であった。使用された高密度ポリエチレンの熱含量は190J/gで結晶度は64.4%であり、押出されたシート内での熱含量は91J/gで希釈剤を除いては結晶度は77.1%であった。希釈剤の影響でポリエチレン自体の結晶度は高くなったことがわかった。延伸は前記シートを119℃で同時延伸で縦方向、横方向の夫々6倍に施した。抽出、乾燥及びエージングの後得られた微多孔膜の厚さは16μmであった。気泡領域及び膨潤領域の割合そして製造されたフィルムの特性を表1に整理した。製造された微多孔膜の断面の写真を観察した結果、実質的に気孔の境界面の破壊が観察されないことがわかり、延伸前のシートは主要領域が膨潤領域であって一部の気泡領域が存在し、延伸後の微多孔膜は全体として気泡境界面が気泡(pore)のサイズより平均的に大きな微多孔膜が形成された。
半結晶性高分子として重量平均分子量が4.0×105g/molでコモノマーとしてブテン−1が0.5重量%含まれた高密度ポリエチレン90重量%と重量平均分子量が4.5×105のホモポリプロピレン10重量%が使用された。希釈剤としてはジブチルフタレートが使用された。半結晶性高分子と希釈剤の重量比は35/65であり、体積率は37.6/62.4であった。使用された高密度ポリエチレンの熱含量は155J/gで結晶度は52.5%であり、シート内での熱含量は58.5J/gで希釈剤とポリプロピレンを除いては結晶度は63.0%であった。使用されたホモポリプロピレンの熱含量は85J/gで結晶度は59%であり、シート内での熱含量は3.8J/gで希釈剤とポリエチレンを除いては結晶度は74.9%であった。従って、使用された半結晶性高分子樹脂の平均結晶度は53.1%であり、シート内における平均結晶度は60.9%であった。その他の製造条件は実施例1と同一に行った。延伸は118℃で同時延伸で縦方向、横方向の夫々6倍に施した。抽出、乾燥及びエージングの後得られたフィルムの厚さは16μmであった。気泡領域及び膨潤領域の割合そして製造されたフィルムの特性を表1に整理した。
半結晶性高分子として重量平均分子量が2.0×105g/molでコモノマーとしてオクテン−1が8.5重量%の線形低密度ポリエチレンが使用され、平均粒子サイズが1.5μmであり、ステアリン酸(Stearic acid)でコーティングされた炭酸カルシウムが使用された。2つの成分の割合は50/50であった。相分離の過程なしで押出冷却されたシートは80℃で機械的方向に2倍延伸した。最終フィルムの厚さは40μmであった。
半結晶性高分子として重量平均分子量が3.0×105g/molの高密度ポリエチレンが使用され、希釈剤としては40℃動粘度が95cStであるパラフィンオイルが使用された。半結晶性高分子と希釈剤の重量比は60/40であり、体積率は57.8/42.2であった。使用された高密度ポリエチレンの熱含量は190J/gで結晶度は64.4%であり、シート内での熱含量は119J/gで希釈剤を除いては結晶度は67.2%であった。延伸は118℃で同時延伸で縦方向、横方向の夫々6倍に施した。抽出、乾燥及びエージングの後得られたフィルムの厚さは16μmであった。
半結晶性高分子として重量平均分子量が4.0×105g/molでコモノマーとしてブテン−1が0.5重量%含まれた高密度ポリエチレンが使用され、希釈剤としては40℃動粘度が95cStであるパラフィンオイルが使用された。半結晶性高分子と希釈剤の重量比は15/85であり、体積率は13.9/86.1であった。使用された高密度ポリエチレンの熱含量は155J/gで結晶度は52.5%であり、シート内での熱含量は33J/gで希釈剤を除いては結晶度は74.5%であった。延伸は115℃で同時延伸で縦方向、横方向の夫々6倍に施した。抽出、乾燥及びエージングの後得られたフィルムの厚さは16μmであった。
Claims (4)
- 半結晶性樹脂と希釈剤の相分離によって製造されるシートにおいて、シート断面のマトリックスが3次元的に連結されて前後面を貫通する気泡領域と希釈剤によって膨潤された非結晶質領域が主マトリックス状からなる樹脂シートを延伸加工し、希釈剤を抽出することによって得られ、前記気泡領域は不規則なサイズと構造を有し、断面の平均直径が0.01μm以上2μm以下であり、樹脂組成物の全体に対する体積率が10%以上40%以下であり、前記非結晶質領域は膨潤率が200%以上であり、延伸過程からはだけて平均直径が0.01μm以上1μm以下の空隙を製造し、前記樹脂シートの延伸の時、前記空隙が破れたり破壊されて互いに合い繋がらず、前記相分離は押出機内に別途の相分離ゾーンを有することを特徴とする高分子微多孔膜の製造方法。
- 半結晶性樹脂はポリエチレン及びポリプロピレンを含む半結晶性高分子の微多孔膜であることを特徴とする請求項1に記載の高分子微多孔膜の製造方法。
- 微多孔膜は気体透過度が1.3×10-5Darcy以上であり、穿孔強度が0.1N/μm以上であることを特徴とする請求項1に記載の高分子微多孔膜の製造方法。
- 微多孔膜は延伸の前のシートの気体透過度より低い透過度を有することを特徴とする請求項1に記載の高分子微多孔膜の製造方法。
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KR10-2005-0127141 | 2005-12-21 | ||
KR1020050127141A KR100961660B1 (ko) | 2005-12-21 | 2005-12-21 | 반결정고분자 미세다공막 및 그 제조방법 |
PCT/KR2006/001189 WO2007073019A1 (en) | 2005-12-21 | 2006-03-31 | Microporous film of semicrystalline polymer and method for preparing the same |
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JP2009516046A JP2009516046A (ja) | 2009-04-16 |
JP2009516046A5 JP2009516046A5 (ja) | 2012-08-09 |
JP5064409B2 true JP5064409B2 (ja) | 2012-10-31 |
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US (2) | US20070138681A1 (ja) |
EP (1) | EP1963408B1 (ja) |
JP (1) | JP5064409B2 (ja) |
KR (1) | KR100961660B1 (ja) |
CN (1) | CN101309954B (ja) |
WO (1) | WO2007073019A1 (ja) |
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JP2012530814A (ja) * | 2009-06-23 | 2012-12-06 | コーポレイション デ レコール ポリテクニーク デ モントリール | キャストフィルム、微孔膜及びこれらの調製方法 |
US20140094076A1 (en) * | 2011-06-16 | 2014-04-03 | James S. Mrozinski | Microporous Materials With Fibrillar Mesh Structure and Methods of Making and Using the Same |
TWI557774B (zh) * | 2013-10-25 | 2016-11-11 | 中原大學 | 半晶態高分子聚合物/層化無機物之複合薄膜及其製造方法 |
CN103921449B (zh) * | 2014-04-23 | 2017-02-15 | 深圳市星源材质科技股份有限公司 | 超薄高强聚烯烃微孔膜的制备方法及聚烯烃微孔膜 |
JP7103715B2 (ja) * | 2018-10-26 | 2022-07-20 | 帝人株式会社 | ポリオレフィン微多孔膜、フィルター、クロマトグラフィー担体及びイムノクロマトグラフ用ストリップ |
RU2711547C1 (ru) * | 2018-12-29 | 2020-01-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный университет имени М.В. Ломоносова" (МГУ) | Способ получения мезопористых механочувствительных полимерных материалов |
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DE69320927T2 (de) * | 1992-12-21 | 1999-02-18 | Mitsubishi Chem Corp | Poröse(r) Film oder Folie, Batterie-Separator und Lithium-Batterie |
JP2000017100A (ja) | 1998-07-03 | 2000-01-18 | Asahi Chem Ind Co Ltd | ポリエチレン微多孔膜の製造方法 |
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JP4986199B2 (ja) * | 2001-05-18 | 2012-07-25 | 旭化成イーマテリアルズ株式会社 | ポリエチレン製微多孔膜及びそれを用いた電池 |
CN1606712A (zh) * | 2001-11-09 | 2005-04-13 | 3M创新有限公司 | 具有用反射和透射模式作显示的光学器件 |
JP4195810B2 (ja) * | 2002-12-16 | 2008-12-17 | 東燃化学株式会社 | ポリオレフィン微多孔膜及びその製造方法並びに用途 |
-
2005
- 2005-12-21 KR KR1020050127141A patent/KR100961660B1/ko active IP Right Grant
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2006
- 2006-03-31 CN CN2006800424055A patent/CN101309954B/zh active Active
- 2006-03-31 JP JP2008541063A patent/JP5064409B2/ja active Active
- 2006-03-31 WO PCT/KR2006/001189 patent/WO2007073019A1/en active Application Filing
- 2006-03-31 EP EP06732762.7A patent/EP1963408B1/en active Active
- 2006-04-19 US US11/406,882 patent/US20070138681A1/en not_active Abandoned
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2007
- 2007-01-18 US US11/654,724 patent/US20070138682A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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CN101309954A (zh) | 2008-11-19 |
KR100961660B1 (ko) | 2010-06-09 |
JP2009516046A (ja) | 2009-04-16 |
CN101309954B (zh) | 2013-01-16 |
KR20070066231A (ko) | 2007-06-27 |
US20070138682A1 (en) | 2007-06-21 |
US20070138681A1 (en) | 2007-06-21 |
WO2007073019A1 (en) | 2007-06-28 |
EP1963408B1 (en) | 2019-11-27 |
EP1963408A4 (en) | 2011-09-28 |
EP1963408A1 (en) | 2008-09-03 |
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