摘要
以氨基三甲叉膦酸(ATMP)、3-氨丙基三甲氧基硅烷(APTES)、聚乙烯吡咯烷酮(PVP)为原料,采用溶胶–凝胶法制备了ATMP/APTES酸碱复合质子交换膜及其PVP改性膜,利用傅立叶变换红外光谱仪、扫描电子显微镜、综合热分析仪质谱联用等对膜材料进行表征和测试。结果表明,PVP与质子膜相容性良好,PVP的添加在一定程度上能提高质子膜的抗氧化性、尺寸稳定性和耐水解性。质子电导率随温度、离子交换容量值及PVP含量增加而升高,在140℃干燥环境下含有质量分数2%PVP改性膜的电导率可达1.73×10^(–2) S/cm,且ATMP/APTES/PVP膜具有良好的热稳定性,基本满足高温低湿度运行要求。
Taking amino trimethylene phosphonic acid （ATMP） and 3-aminopropyltriethoxysilane （APTES） and polyvinyl pyrrolidone （PVP） serve as raw materials,ATMP/APTES acid-base composite proton exchanges membrane and PVP modified acid-base composite membranes were prepared by sol-gel method and characterized systematically by FTIR,SEM,TG–DSC and Autolab. The results show that the modifier PVP has a good consistency with proton membrane. The addition of PVP can improve the oxidative stability and dimensional stability water absorption of membrane to a certain extent. The proton conductivity is enhanced with increasing temperature,IEC and PVP content. The proton conductivity of the composite membrane with the mass fraction 2% PVP is up to 1.73×10^–2 S/cm at 140℃ under dry conditions. The ATMP/APTES/PVP has good thermal stability and can be operated in the high temperature and low humidity environment.
作者
张林
张鑫
沈春晖
郭宇星
谢颖
姜育阳
Zhang Lin;Zhang Xin;Shen Chunhui;Guo Yuxing;Xie Ying;Jiang Yuyang(School of Material Science and Engineering,Wuhan University of Technology,Wuhan 430070,Chin)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2018年第6期35-40,共6页
Engineering Plastics Application
关键词
高温质子交换膜
膦酸
酸碱离子对
聚乙烯吡咯烷酮改性
high temperature proton exchange membrane
phosphonic acid
acid-base ion pair
polyvinyl pyrrolidone modification
