To provide a polyketone porous film having heat resistance and chemical resistance and useful as a filter for filtration having a high particle collection efficiency and as a battery or capacitor separator having a low permeation resistance to ion and the like.
A polyketone porous film comprising from 10 to 100 mass% of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein the polyketone porous film has a pore formed only by a polyketone, the pore diameter uniformity parameter as a value obtained by dividing the standard deviation of the pore diameter in the pore by an average pore diameter is from 0 to 1.0, and the average through hole diameter of the polyketone porous film is from 0.01 to 50 µm.
提供一种具有耐热性和耐
化学性的多孔聚酮薄膜,该薄膜可用作具有较高颗粒收集效率的过滤用过滤器,也可用作具有较低离子渗透阻力的电池或电容器隔膜。
一种聚酮多孔膜,由 10 至 100 质量%的聚酮作为
一氧化碳和一种或多种烯烃的共聚物组成,其中聚酮多孔膜具有仅由聚酮形成的孔,孔径均匀性参数作为通过将孔中孔径的标准偏差除以平均孔径而获得的值,为 0 至 1.0,且聚酮多孔膜的平均通孔直径为 0.01 至 50 µm。