SPEEK/改性MWCNT复合质子交换膜的制备与性能  

Preparation and properties of SPEEK/modified MWCNT composite proton exchange membrane

作　　者：杨俊 殷哲昌 方舟 陈欢 张新 张晓楠 朱长进 YANG Jun;YIN Zhe-chang;FANG Zhou;CHEN Huan;ZHANG Xin;ZHANG Xiao-nan;ZHU Chang-jin(School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102488,China)

机构地区：[1]北京理工大学化学与化工学院,北京102488

出　　处：《现代化工》2020年第10期196-201,共6页Modern Chemical Industry

摘　　要：制备了带有柔性有机侧链的改性碳纳米管(MWCNT-G),并与磺化聚醚醚酮(SPEEK)共混制得复合膜。扫描电镜(SEM)分析结果表明,MWCNT-G比原始MWCNT在SPEEK中分散更均匀。在1%的掺杂比例下对比分析了SPEEK/MWCNT膜及SPEEK/MWCNT-G膜的质子传导率、吸水率、溶胀度、机械性能、化学稳定性、热稳定性等。SPEEK/MWCNT-G膜未降低吸水率却降低了溶胀度,在机械强度及稳定性上均有所提高。SPEEK/MWCNT-G膜质子传递阻力更低,60℃时其质子传导率达0.086 S/cm,是SPEEK/MWCNT膜的1.46倍、SPEEK膜的1.72倍。该方案使MWCNT与SPEEK相容性差的状况得以改善。A kind of composite membrane is obtained through blending sulfonated polyether ether ketone(SPEEK)and modified carbon nanotube(MWCNT-G)with flexible organic side chains.Analysis results by SEM indicate that MWCNT-G disperses more uniformly in the matrix than native MWCNT.Under a doping ratio of 1%,SPEEK/MWCNT and SPEEK/MWCNT-G composite membranes are compared and analyzed from their proton conductivity,water absorption rate,swelling ratio,mechanical property,strength,chemical stability and thermal stability.SPEEK/MWCNT-G membrane remains unchanged in water absorption rate but has a lower swelling ratio,and exhibits a higher mechanical strength and a higher stability.Moreover,SPEEK/MWCNT-G membrane shows lower proton transfer resistance with a proton conductivity of 0.086 S/cm at 60℃,1.46 times that of SPEEK/MWCNT and 1.72 times that of SPEEK.This scheme improves the compatibility between MWCNT and SPEEK.

关 键 词：质子交换膜 碳纳米管 磺化聚醚醚酮 

分 类 号：TM911.4[电气工程—电力电子与电力传动]