A novel process for making PBI films starting from gel PBI membranes polymerized and casted in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.
一种新型的 PBI 薄膜制造工艺,该工艺以在
PPA 工艺中聚合和浇铸的凝胶 PBI 膜为起点,在该工艺中,酸混凝胶 PBI 在一系列
水浴中被中和,并与基底材料一起经历受控干燥,从而在不使用有机溶剂的情况下生成 PBI 薄膜。