聚酰亚胺纳米纤维滤膜的制备及性能分析  

Preparation and performance analysis of polyimide nanofiber filter membranes

作　　者：张海霞[1] 张芳铖 贾琳[1] ZHANG Haixia;ZHANG Fangcheng;JIA Lin(College of Textile Engineering,Henan University of Engineering,Zhengzhou 450007,China;International Joint Laboratory of New Textile Materials and Textiles of Henan Province,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]河南工程学院纺织工程学院,河南郑州450007 [2]中原工学院河南省纺织新材料与纺织品国际联合试验室,河南郑州450007

出　　处：《河南工程学院学报（自然科学版）》2024年第1期1-6,共6页Journal of Henan University of Engineering：Natural Science Edition

基　　金：河南省科技厅科技攻关项目(222102320150);河南省高校重点科研项目(21B540001);河南工程学院科研培育基金(PYXM202106)。

摘　　要：为探究亚胺化温度对聚酰亚胺(PI)纳米纤维性能的影响,将二胺单体4,4-二氨基二苯醚(ODA)和二酐单体均苯四甲酸酐(PMDA)溶于N,N-二甲基乙酰胺(DMAc)中,配制不同质量分数的聚酰胺酸(PAA)溶液,通过静电纺丝制成PAA纳米纤维滤膜,随后经过不同温度亚胺化处理形成PI纳米纤维滤膜,研究滤膜的微观形态、过滤性能、透气性能和透湿性能等。结果表明:PAA溶液质量分数为30%时,其纳米纤维形态最好;亚胺化温度为200℃时,滤膜的过滤效率为95.86%,阻力压降为610.56 Pa,过滤性能平衡关系最好,此时最大强度为3.24MPa,透气率为98.19 mm/s;亚胺化温度为190℃时,水接触角为95.26°,润湿性能最好;透湿性能随着亚胺化温度的升高而降低。In order to explore the effect of amination temperature on the performance of polyimide(PI)nanofibers,diamine monomer 4,4-diamino diphenyl ether(ODA)and dianhydride monomer phenylanhydride(PMDA)are dissolved in N,N-dimethyl acetamide(DMAc),and it is prepared with different concentrations of polyamide acid(PAA)solution,and made into PAA nanofiber membrane by electrostatic spinning,then form PI nanofiber filter membrane by thermal amination treatment of different temperatures.We study the microscopic morphology,filtration performance,air permeability and moisture performance of the filter membrane.The results show that when the PAA concentration is 30%,the nanofiber form is best,when the amination temperature is 200℃,the filtration efficiency of the filter membrane is 95.86%,the resistance pressure drop is 610.56 Pa,the best filtration performance balance;the maximum strength is 3.24 MPa;the permeability rate is 98.19 mm/s;when the amination temperature is 190℃,the water contact angle is 95.26,the best wetting performance is approached;the moisture transmission performance decreases with the rising amination temperature.

关 键 词：聚酰亚胺(PI) 亚胺化 静电纺丝 过滤性能 纳米纤维 

分 类 号：TS102.6[轻工技术与工程—纺织工程]