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以聚芳醚砜为膜材料，采用干／湿相转换法．在非挥发性溶剂－挥发性添加剂以及挥发性溶剂／共溶剂－弱挥发性添加剂两种溶剂体系中研究了致密皮层不对称膜的制备和形成条件，并对它们的结构及氮、氢气体透过性能进行了测试。结果表明，采用前一种溶剂体系。虽然可以在一定范围内控制膜平均孔径的变化，却难以得到致密皮层不对称膜。而后一种溶剂体系，在控制铸膜液组成、适当的制膜条件下可以得到具有海绵状支撑结构的不对称气体分离膜。
To poly aryl ether sulfone membrane material, using dry / wet phase conversion method. The preparation and formation conditions of dense cortical asymmetric membranes were studied in two kinds of solvent systems, ie non-volatile solvent-volatile additive and volatile solvent / cosolvent-weak additive. Their structure, nitrogen and hydrogen permeability Performance has been tested. The results show that the former solvent system is used. Although it is possible to control the change of the average pore size within a certain range, it is difficult to obtain a dense cortical asymmetric membrane. Then a solvent system can control the composition of the casting solution and obtain an asymmetric gas separation membrane with a sponge-like support structure under appropriate film-forming conditions.