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公开(公告)号：EP0757071A3
公开(公告)日：1997-02-19
申请号：EP96111605.0
申请日：1996-07-18
CPC分类号： C08J9/26 , C08J5/18 , C08J9/28 , C08J2201/0542 , C08J2377/10 , H01M2/162 , H01M2/1653 , Y10T428/31725
摘要： A para-oriented aromatic polyamide porous film, which comprises fibrils having a diameter of not more than 1 µm and which has such a structure that the fibrils are planary arranged in the form of a network or nonwoven fabric and laminated in the form of a layer, wherein the thermal linear expansion coefficient at 200 to 300°C of the film is within ±50 x 10 -6 /°C and a percentage of vacant spaces is from 30 to 95% and a battery separator using the porous film are described. Furthermore, a process for producing the porous film is described, which comprises the following steps (a) to (c):
(a) forming a film-like material from a solution containing 1 to 10% by weight of a para-oriented aromatic polyamide having an inherent viscosity of 1.0 to 2.8 dl/g and 1 to 10% by weight of a chloride of an alkali metal or an alkali earth metal in a polar amide solvent or a polar urea solvent; (b) maintaining the film-like material at a temperature of not less than 20°C or not more than -5°C to deposit the para-oriented aromatic polyamide; and (c) immersing the film-like material obtained in step (b) in an aqueous solution or an alcoholic solution to elute the solvent and chloride of the alkali metal or alkali earth metal, followed by drying to obtain the para-oriented aromatic polyamide porous film. It is to provide a para-aramid porous film having uniformity and fine vacant spaces, which can not be accomplished by a nonwoven fabric, a process for producing the same and a battery separator produced by using the para-aramid porous film, by making use of characteristics of a para-aramid (e.g. high heat resistance, high rigidity, high strength, etc.).摘要翻译： 一种对位取向芳族聚酰胺多孔膜，其包含直径不大于1μm的原纤维，并且具有这样的结构，即原纤维以网状或无纺织物的形式平面排列并层压成层状 其中，所述膜的200〜300℃下的热线膨胀系数在±50×10 -6 /℃以内，空余空隙的比例为30〜95％，并且记载了使用该多孔膜的电池用隔膜。 此外，描述了用于生产多孔膜的方法，其包括以下步骤（a）至（c）：（a）由包含1至10重量％的对位取向的芳族化合物的溶液形成膜状材料 在极性酰胺溶剂或极性尿素溶剂中具有特性粘度为1.0至2.8dl / g和1至10重量％的碱金属或碱土金属氯化物的聚酰胺; （b）将膜状材料保持在不低于20℃或不高于-5℃的温度以沉积对位取向的芳族聚酰胺; （c）将步骤（b）中获得的膜状材料浸入水溶液或醇溶液中以洗脱碱金属或碱土金属的溶剂和氯化物，随后干燥以获得对位取向的芳族聚酰胺 多孔膜。 本发明提供一种无纺布无法实现的具有均匀性和微细空隙的对位芳族聚酰胺多孔膜及其制造方法，以及使用该对位芳族聚酰胺多孔膜制作的电池用隔膜， 对芳族聚酰胺的特性（例如高耐热性，高刚性，高强度等）。
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公开(公告)号：EP0757071B1
公开(公告)日：2003-04-16
申请号：EP96111605.0
申请日：1996-07-18
CPC分类号： C08J9/26 , C08J5/18 , C08J9/28 , C08J2201/0542 , C08J2377/10 , H01M2/162 , H01M2/1653 , Y10T428/31725
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公开(公告)号：EP0757071A2
公开(公告)日：1997-02-05
申请号：EP96111605.0
申请日：1996-07-18
CPC分类号： C08J9/26 , C08J5/18 , C08J9/28 , C08J2201/0542 , C08J2377/10 , H01M2/162 , H01M2/1653 , Y10T428/31725
摘要： A para-oriented aromatic polyamide porous film, which comprises fibrils having a diameter of not more than 1 µm and which has such a structure that the fibrils are planary arranged in the form of a network or nonwoven fabric and laminated in the form of a layer, wherein the thermal linear expansion coefficient at 200 to 300°C of the film is within ±50 x 10 -6 /°C and a percentage of vacant spaces is from 30 to 95% and a battery separator using the porous film are described. Furthermore, a process for producing the porous film is described, which comprises the following steps (a) to (c):
(a) forming a film-like material from a solution containing 1 to 10% by weight of a para-oriented aromatic polyamide having an inherent viscosity of 1.0 to 2.8 dl/g and 1 to 10% by weight of a chloride of an alkali metal or an alkali earth metal in a polar amide solvent or a polar urea solvent;
(b) maintaining the film-like material at a temperature of not less than 20°C or not more than -5°C to deposit the para-oriented aromatic polyamide; and
(c) immersing the film-like material obtained in step (b) in an aqueous solution or an alcoholic solution to elute the solvent and chloride of the alkali metal or alkali earth metal, followed by drying to obtain the para-oriented aromatic polyamide porous film.
It is to provide a para-aramid porous film having uniformity and fine vacant spaces, which can not be accomplished by a nonwoven fabric, a process for producing the same and a battery separator produced by using the para-aramid porous film, by making use of characteristics of a para-aramid (e.g. high heat resistance, high rigidity, high strength, etc.).摘要翻译： 对位取向的芳族聚酰胺多孔膜，其包含直径不大于1μm的原纤维，并且具有这样的结构，使得原纤维以网状或非织造织物的形式平面布置，并以 层，其中膜的200〜300℃的热线膨胀系数在+/- 50×10 -6 /℃以内，空位的百分比为30〜95％，电池隔板使用 描述多孔膜。 此外，描述了一种制备多孔膜的方法，其包括以下步骤（a）至（c）：（a）从含有1至10重量％的对位芳族化合物的溶液形成膜状材料 在极性酰胺溶剂或极性脲溶剂中，特性粘度为1.0〜2.8dl / g的聚酰胺和1〜10重量％的碱金属或碱土金属的氯化物; （b）将膜状材料保持在不低于20℃或不高于-5℃的温度下沉积对位芳族聚酰胺; 和（c）将步骤（b）中获得的薄膜状材料浸渍在水溶液或醇溶液中以洗脱碱金属或碱土金属的溶剂和氯化物，然后干燥，得到对位芳族聚酰胺 多孔膜。 本发明提供一种具有均匀性和微细空间的对位芳族聚酰胺多孔膜，其不能通过使用无机织物，其制造方法和通过使用对位芳族聚酰胺多孔膜制备的电池隔膜来实现 （例如高耐热性，高刚性，高强度等）。
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