Troger’s Base型聚酰亚胺/磺化聚醚醚酮复合质子交换膜制备及性能  

Preparation and properties of Troger’s Base polyimide/sulfonated poly(ether ether ketone) composite proton exchange membrane

作　　者：骆鑫雨 姜忠义[1,2] 陈赞 吴洪[1,2] 于海斌 段翠佳 袁标 LUO Xinyu;JIANG Zhongyi;CHEN Zan;WU Hong;YU Haibin;DUAN Cuijia;YUAN Biao(Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;Collaborative Innovation Center for Chemical Engineering,Tianjin University,Tianjin 300072,China;CenerTech Tianjin Chemical Research and Design Institute Co.,Ltd.,Tianjin 300130,China)

机构地区：[1]天津大学化工学院,绿色合成与转化教育部重点实验室,天津300072 [2]天津大学化学化工协同创新中心,天津300072 [3]中海油天津化工研究设计院有限公司,天津300130

出　　处：《膜科学与技术》2023年第1期91-98,共8页Membrane Science and Technology

基　　金：国家自然科学基金企业创新发展联合基金项目(U20B2024)。

摘　　要：为解决质子交换膜质子传导率与稳定性间相互制约的问题,设计合成了一种强碱性Troger’s Base型聚酰亚胺(PI-TB),通过与磺化聚醚醚酮(SPEEK)共混制备出复合质子交换膜.通过红外光谱分析(FTIR)、热失重分析(TGA)、拉伸试验等表征了膜的化学结构、热稳定性和机械强度,考察了PI-TB加入量对膜的吸水率、溶胀度、离子交换容量和质子传导率的影响.结果表明,PI-TB与SPEEK之间存在的静电和氢键相互作用提高了膜的机械强度和结构稳定性.当PI-TB共混量为20%(质量分数)时,复合膜(PS-20)的质子传导率为102 mS/cm(60℃、100%RH);拉伸强度达93.13 MPa,为纯SPEEK膜的2.4倍;60℃、60%RH下,PS-20膜的质子传导率为6.78 mS/cm,是纯SPEEK膜的4.6倍.In order to solve the problem of mutual restriction between proton conductivity and stability of proton exchange membrane, a strong basic Troger’s Base polyimide(PI-TB) was designed and blended with sulfonated poly(ether ether ketone)(SPEEK) to prepare a composite proton exchange membrane in this paper. Chemical structure, thermal stability and mechanical strength of the membranes were characterized by FTIR, TGA, mechanical strength testing machine. Besides, the water uptake, swelling ratio, ion exchange capacity and proton conductivity of the membrane were tested. The electrostatic and hydrogen bonding interactions between PI-TB and SPEEK enhance the mechanical strength and structural stability of the membrane. When the blending amount of PI-TB was 20 %, the proton conductivity of the composite membrane(PS-20) was 102 mS/cm(60 ℃, 100% RH);the tensile strength of PS-20 membrane was 93.13 MPa, 2.4 times that of the SPEEK membrane;at 60% RH, the proton conductivity of PS-20 was 6.78 mS/cm, 4.6 times as high as that of the SPEEK membrane.

关 键 词：磺化聚醚醚酮 聚酰亚胺 质子交换膜 燃料电池 

分 类 号：TM911.4[电气工程—电力电子与电力传动]