公开(公告)号：US20150076741A1

公开(公告)日：2015-03-19

申请号：US14387739

申请日：2013-05-20

Applicant: NITTO DENKO CORPORATION

Inventor： Yosuke Yamada ,  Michie Sakamoto ,  Shunsuke Noumi

IPC: H01M2/14 ,  B29C39/00 ,  B29D7/01 ,  H01M2/16

CPC classification number: H01M2/145 ,  B29C39/00 ,  B29C39/02 ,  B29D7/01 ,  B29K2063/00 ,  B29K2263/00 ,  B29L2007/001 ,  G01B11/06 ,  H01M2/1653 ,  H01M10/0525

Abstract: 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.

Abstract translation: 本发明提供一种包含多孔环氧树脂膜的非水电解质蓄电装置用隔膜的制造方法，该方法包括：（i）制备含有环氧树脂，固化剂和致孔剂的环氧树脂组合物的工序; 将环氧树脂组合物的固化物切割成片状或固化环氧树脂组合物的片状成形体的工序（ii），得到环氧树脂片; 使用无卤素溶剂从环氧树脂片中除去致孔剂以形成多孔环氧树脂膜的步骤（iii）; 以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吸收特性的步骤（iv）; 以及基于红外吸收特性计算多孔环氧树脂膜的膜厚度和/或平均孔径的步骤（v）。 该制造方法可以避免使用在环境中施加大负荷的溶剂，并且适于控制诸如平均孔径和膜厚度的参数。