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Method for preparing microporous polyolefin film by thermally-induced phase separation method
Method for preparing microporous polyolefin film by thermally-induced phase separation method
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机译:热诱导相分离法制备微孔聚烯烃膜的方法
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摘要
The present invention discloses a method for preparing a microporous polyolefin film comprising: a step of injecting a composition comprising polyolefin 30 to 60 wt % and a diluent, which can make liquid-liquid phase separation with the polyolefin thermodynamically 40 to 70 wt %, into an extruding machine, and melting and kneading thereof to prepare a single phase me and a step of extruding the melt while conducting liquid-liquid phase separation by passing through a section having the temperature below the liquid-liquid phase separation temperature and forming thereof in the form of a sheet, and a microporous polyolefin film prepared according to the method.
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