Provided is a separator for nonaqueous electrolyte electricity storage devices that includes an improved porous epoxy resin membrane. In the separator for nonaqueous electrolyte electricity storage devices, a ratio I/Io between a peak intensity Io of an absorption peak present at 1240 cm-1 in an infrared absorption spectrum of the porous epoxy resin membrane and a peak intensity I of an absorption peak present at 1240 cm-1 in an infrared absorption spectrum of the porous epoxy resin membrane having been subjected to an acetic anhydride treatment is 1.0 or more and 2.4 or less. The amount of active hydroxyl groups present in the porous epoxy resin membrane can be evaluated by the value of the ratio I/Io.
本文提供了一种用于非
水电解质储电装置的隔膜,它包括一种改进的多孔环氧
树脂膜。在这种用于非
水电解质储电装置的隔膜中,多孔环氧
树脂膜的红外吸收光谱中出现在 1240 cm-1 处的吸收峰的峰值强度 Io 与经过
醋酸酐处理的多孔环氧
树脂膜的红外吸收光谱中出现在 1240 cm-1 处的吸收峰的峰值强度 I 之间的比值 I/Io 为 1.0 或以上和 2.4 或以下。多孔环氧
树脂膜中存在的活性羟基的数量可以通过 I/Io 的比值来评估。