ABPBI/SPEEK高温质子交换复合膜的制备与表征

Preparation and characterization of ABPBI/SPEEK high temperature proton exchange composite membrane

张琪 ¹陆婕妤 ¹钟璟 ¹郭向前²

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作者信息

1. 常州大学石油化工学院,常州大学精细石油化工江苏省重点实验室,江苏常州 213164
2. 中国石化扬子石油化工有限公司,江苏南京 210048
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摘要

采用溶剂蒸发法制备聚(2,5-苯并咪唑)/磺化聚醚醚酮(ABPBI/SPEEK)高温质子交换复合膜.考察了 SPEEK的掺入对ABPBI/SPEEK质子交换复合膜的结构及性能的影响.结果表明,ABPBI膜和ABPBI/SPEEK复合膜在高温下的热稳定性能良好;随着SPEEK的掺入,ABPBI/SPEEK复合膜有更好的氧化稳定性和机械性能,ABPBI/SPEEK(20％)复合膜在芬顿试剂中96 h后的质量损失为0.84％,其拉伸强度为120.51 MPa,相较于Nafion 117膜明显提高;ABPBI/SPEEK(20％)复合膜的酸掺杂率为186.68％,该膜在160℃、0％RH时的质子电导率为3.4 mS/cm,约为ABPBI膜的1.78倍.

Abstract

Poly(2,5-benzimidazole)/sulfonated polyether ether ketone(ABPBI/SPEEK)high-temperature proton exchange composite membrane is prepared through using a solvent evaporation method.The effect of SPEEK addition on the structure and properties of ABPBI/SPEEK proton exchange composite membrane is investigated.It is indicated that both ABPBI membrane and ABPBI/SPEEK composite membrane have good thermal stability at high temperature.With the addition of SPEEK,ABPBI/SPEEK composite membrane shows better oxidation stability and mechanical properties.ABPBI/SPEEK(20％)composite membrane delivers a 0.84％of weight loss after 96 h in Fenton reagent,and its tensile strength is 120.51 MPa,which is significantly higher than that of Nafion117 membrane.The acid doping rate of ABPBI/SPEEK(20％)composite membrane is 186.68％,its proton conductivity is 3.4 mS·cm-1 at 160℃ and 0％RH,which is approximately 1.78 times that of ABPBI membrane.

关键词

聚(2,5-苯并咪唑)/磺化聚醚醚酮/质子交换膜/高温/质子电导率

Key words

poly(2,5-benzimidazole)/sulfonated poly ether ether ketone/proton exchange membrane/high temperature/proton conductivity

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基金项目

国家自然科学基金(21306012)

江苏省精细石油化工重点实验室开放课题基金资助项目(KF2106)

江苏省研究生科研与实践创新计划项目(KYCX22-3090)

出版年

2024

现代化工

中国化工信息中心

现代化工

CSTPCDCSCD北大核心

影响因子：0.553

ISSN：0253-4320

被引量1

参考文献量2

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