METHOD FOR PRODUCING A SEPARATOR FOR A NONAQUEOUS ELECTROLYTE POWER STORAGE DEVICE AND METHOD FOR PRODUCING EPOXY RESIN POROUS MEMBRANE
申请人:Nitto Denko Corporation
公开号:EP2854198A1
公开(公告)日:2015-04-01
Provided is a method for producing a separator for nonaqueous electrolyte electricity storage devices that includes a porous epoxy resin membrane, the method including: a step (i) of preparing an epoxy resin composition containing an epoxy resin, a curing agent, and a porogen; a step (ii) of cutting a cured product of the epoxy resin composition into a sheet shape or curing a sheet-shaped formed body of the epoxy resin composition so as to obtain an epoxy resin sheet; a step (iii) of removing the porogen from the epoxy resin sheet using a halogen-free solvent so as to form a porous epoxy resin membrane; a step (iv) of irradiating the porous epoxy resin membrane with infrared ray so as to measure infrared absorption characteristics of the porous epoxy resin membrane; and a step (v) of calculating a membrane thickness and/or an average pore diameter of the porous epoxy resin membrane based on the infrared absorption characteristics. This production method can avoid the use of a solvent that places a large load on the environment, and is adapted for control of parameters such as the average pore diameter and the membrane thickness.
本发明提供了一种用于生产非水电解质储电装置隔膜的方法,该隔膜包括多孔环氧树脂膜,该方法包括步骤(i)制备含有环氧树脂、固化剂和致孔剂的环氧树脂组合物;步骤(ii)将环氧树脂组合物的固化产物切割成片状或固化环氧树脂组合物的片状成型体,以获得环氧树脂片;步骤(iii)使用无卤溶剂从环氧树脂片中去除致孔剂,以形成多孔环氧树脂膜;步骤(iv)用红外线照射多孔环氧树脂膜,以测量多孔环氧树脂膜的红外线吸收特性;以及步骤(v)根据红外线吸收特性计算多孔环氧树脂膜的膜厚和/或平均孔径。这种生产方法可以避免使用对环境造成较大负荷的溶剂,并适用于控制平均孔径和膜厚度等参数。