以杂萘联苯聚醚砜酮(PPESK)为膜材料,N-甲基-2-吡咯烷酮(NMP)为溶剂,乙二醇甲醚(EGME)、丁酮和1,4-二氧六环为添加剂,采用干-湿相转化法制备了中空纤维膜.考察了聚合物浓度、添加剂种类、添加剂含量和干纺程对中空纤维超滤膜性能的影响.结果表明,当干纺程为15-20mm时,聚合物浓度为19%~22%,添加剂为乙二醇甲醚时,中空纤维膜对PEG6000的截留率高于95%,纯水通量为100-120L/(m^2·h).
Hollow fiber ultrafiltration membranes were fabricated by dry/wet phase inversion technique, novel heterocylic poly (phthalazinone ether sulfone ketone ) (PPESK) as membrane material, ethylene glycol monomethyl ether, 2 - butanone and 1, 4 - dioxane as additives, N - methyl - 2 - pyrrolidone as solvent. The effects of polymer concentration, types and contents of additives on the performance of the hollow fiber ultrafiltration membrane were studied by orthogonal experiments method. From the results of the orthogonal experiments and considering the compositive performances of the hollow fiber membranes, it can be concluded that when the air gap is between 15 mm and 20 mm, the concentration of polymer is 19% -22%, and EGME is used as additive, the permeation flux, rejection with molecular weight cut- off (PEG6000) the hollow fiber membrane were 100- 120 L/(m^2·h), 95 %, respectively.