含萘基的磺化聚芳醚酮质子交换膜的制备及表征

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摘要：随着社会的发展，经济的快速提高，人们渐渐的对燃料电池的要求也日益增高，要满足这样的能源需求已经是十分艰巨的任务，因此我们急需寻找到一种清洁，安全，高效的能源利用技术，无论是运用在军事上，还是在日常生活中。因此，对燃料电池性能的提升与原料的改变有着重要的研究的意义。随着科技的进步，越来越多的人们都开始关注燃料电池质子交换膜的研究，其中质子交换膜就是质子交换膜燃料电池的核心部件，所以本文主要是对质子交换膜来进行研究。目前使用较为普遍的是全氟磺酸膜，但是由于在实际操作和应用当中存在着一定的问题及昂贵的生产成本制约了该类膜在燃料电池中的进一步发展。因此，开发新型非氟质子交换膜已成为研究的主要方向。47034

相对于全氟磺酸质子交换膜，然而非氟质子交换膜原料易得且价格较为便宜；力学稳定性和热稳定性良好，制备工艺安全，可回收利用，环境友好等优点。因此，非氟质子交换膜是质子交换膜的一个重要的发展方向。所以开发非氟质子交换膜对推动电解质膜燃料电池在交通、通讯等领域的推广应用有着重要的科学意义和潜在的应用市场。

本论文主要研究的内容含萘基的磺化聚芳醚酮质子交换膜的制备及性能，考察了两种不同的二氟单体对膜的性能的影响。以磺化二氟二苯酮、2,7-二羟基萘为原料，分别采用了二氟二苯酮和二氟三苯二酮来进行一系列的研究和测验。通过红外谱表征聚合物的官能团结构，另外，测试了聚合物膜的氧化稳定性、吸水率、溶胀率，质子电导率等，对比分析不同结构的聚合物膜的性能。两个系列磺化度最高的聚合物sDFBP-5和sDFBP-55-T的吸水率在80oC时，分别为35.23%和60.9%，溶胀率分别为20.2%和33.74%。前者的溶胀率与Nafion117的20%接近，而后者的高于Nafion117膜的溶胀率。sDFBP-50在经典型的耐老化实验后，几乎没有重量损失，其耐氧化性能优异，比已报道的高稳定性磺化芳香聚合物膜的还要好，sDFBP-x和sDFBP-x- DFTBP膜在Fenton试剂中浸泡1h后，其残余质量均保持在93%以上，也表明其具有较好的耐氧化稳定性。相同条件下，IEC接近的膜的质子电导率sDFBP-x比sDFBP-x-T略低。对比分析表明，结构相似，IEC接近的两个不同系列的聚合物，sDFBP-50比sDFBP-55-T表现了更加优异的性能。

毕业论文关键词：萘基；质子交换膜；含萘基的新型聚芳醚酮

Preparation and Characterization of Membrane Sulfonated Polyaryletherketone Proton Exchange Group-containing Naphthalene

Abstract: With the rapid increase in the development of society, economy, people gradually to the fuel cell requirements are increasingly higher, to meet this demand for energy is already a daunting task, so we urgently need to find a clean, safe and efficient energy use of technology, whether it is used in the military, or in everyday life. Therefore, the change of the fuel cell performance improvements and raw material has an important significance of the study. For the current study proton exchange membrane fuel cells are attracting more and more attention, and proton exchange membrane is a proton exchange membrane fuel cell core components, this paper proton exchange membrane primary research.Meanwhile, some problems Nafion in practical application and high production costs restricted the further development of such membranes in fuel cells. Therefore, the development of new non-fluorinated proton exchange membrane has become the main direction of the research.

With respect to the Nafion proton exchange membrane, however, non-fluorinated proton exchange membrane materials readily available and less expensive; good mechanical and thermal stability, manufacturing process safety, recyclable, and environmental friendliness. Therefore, the non-fluorinated proton proton exchange membrane is an important direction of development exchange membrane. Therefore, the development of non-fluorinated membranes for proton exchange membrane fuel cell electrolyte to promote the popularization and application in the transportation, communications and other fields has important scientific significance and potential applications.