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研制出一种高强度、高选择透过性的硅分子筛复合膜 .这种膜的最大特点 ,是其表面分离层是由定向聚合制得的硅树脂膜裂解制成 .由于这种硅树脂的大分子呈规则排列 ,因而导致最终裂解膜的孔径分布极窄 ,膜选择透过性能较大幅度提高 .这种膜对气体的渗透系数约为1 0 3Barrer(1Barrer =7.6× 1 0 - 8cm3·cm/cm2 ·s·MPa) ,H2 /N2 分离因子可达 90 ,其选择透过性能远优于常规的有机膜和无机膜 ,也优于常规碳分子筛膜和硅分子筛膜 .这种膜以多孔陶瓷为支撑体制成复合膜 ,因而具有较高的强度 .
Developed a high strength, high selectivity through the porous silicon molecular sieve composite film.The most prominent feature of this film is the surface of the separation layer is made by the directional polymerization of silicone resin membrane prepared by the silicone The macromolecules are regularly arranged, resulting in a very narrow pore size distribution of the final cleaved membrane with a substantial increase in membrane selective permeability. The permeability coefficient of this membrane to gas is approximately 1 0 3Barrer (1Barrer = 7.6 × 10 -8 cm 3 · cm / cm2 · s · MPa), the separation factor of H2 / N2 can reach 90. The selective permeability is better than the conventional organic and inorganic membranes, and also better than the conventional carbon molecular sieve membrane and the silicon molecular sieve membrane. Porous ceramic as the support made of composite film, which has a high strength.