含萘基的磺化聚芳醚酮质子交换膜的制备及表征(2)

菜单

The main research direction is the impact of different non-sulfonated monomer polyaryletherketone proton exchange membrane. Sulfonateddifluorobenzophenone, 2,7-dihydroxynaphthalene as raw materials were used difluorobenzophenone and di-fluoro-triphenyl-dione to a series of studies and tests. By testing its oxidative stability, water absorption, swelling ratio, and IR spectra of the polymer film to determine whether the improved performance of the membrane. sDFBP-45, sDFBP-50 and sDFBP-50-T, sDFBP-55-T water absorption when the temperature reaches 80oC, water absorption are far more Nafion117 30%, respectively, 34.19%, 35.23% and 31.09%, 60.9%. In the swelling ratio also has a relatively good performance, the most notable is sDFBP-55-T, at 80oC, the film swelling rate reached 33.74 percent, far higher than Nafion117 20%. At the same time after the classic anti-aging test, almost no weight loss, excellent in oxidation resistance, high stability than sulfonated aromatic polymer membranes have been reported even better, sDFBP-x and sDFBP-x- DFTBP film in Fenton after reagent soak 1h, the residual mass was maintained at 93%, but also that it has good resistance to oxidation stability.

Keywords: sulfonated polyaryletherketone; proton exchange membrane; the new polyaryletherketone group containing naphthalene

1 绪论 1

1.1 燃料电池 1

1.2 质子交换膜燃料电池 1

1.3 质子交换膜 2

1.3.1 全氟磺酸质子交换膜 2

1.3.2 部分氟化质子交换膜 3

1.3.3 新型无氟化质子交换膜 4

2 实验部分 8

2.1 实验内容 8

2.1.1 实验原料 8

2.1.2 单体提纯 8

2.1.3 聚合物的合成 8

2.1.4 聚合物膜的制备 9

2.2 实验仪器 10

2.3 表征方法 10

2.4 结果与讨论 11

2.4.1 聚合物的合成 11

2.4.2 聚合物的红外谱图测定 13

2.4.3 聚合物的热性能（TG） 14

2.4.4 聚合物的玻璃化转变温度（DSC） 17

2.4.5 聚合物膜的IEC测定 17

2.4.6 聚合物膜的吸水率测定 18

2.4.7 聚合物膜的溶胀率测定 19

2.4.8 聚合物膜耐氧化稳定性的测定 20

2.4.9 聚合物膜的电导率 21

3 全文总结 23

致谢 24

参考文献 25

1 绪论

二十一世纪，环境与能源的问题成为了全人类所共同关心的世界性问题，质子交换膜燃料电池（PEMFC）作为一种高效、清洁的绿色环保能源，能够将燃料中的化学能直接转换为电能同时不受到卡诺循环的限制，而且它的启动速度十分迅速，使用寿命长，于是在近些年中得到了广泛的应用和迅速的发展，瞬间成为了来自国内外的学者研究的重点对象。质子交换膜作为质子交换膜燃料电池的核心组成，有着分割还原剂和氧化剂的作用，同时也起着传导质子的作用，质子交换膜的优劣可以直接影响到电池寿命、电能量转换率和电池本身的性能。燃料电池作为一种高效、清洁的新能源发电技术，显示出了广阔的研究价值和诱人的市场前景。