1) methanol permeability
甲醇透过系数
1.
The PES/SPEEK membranes water uptake,swelling degree and methanol permeability decrease collectively as PES content increases.
所制备PES/SPEEK共混膜的含水率、溶胀度和甲醇透过系数均随PES含量的增加而降低。
2.
Both SPES and PES/SPES blend membranes had low methanol permeability and high proton conductivity indicating these membranes are excellent candidate membrane materials for direct methanol fuel cells (DMFCs) applications.
SPES膜在室温下的电导率和甲醇透过系数随着磺化度的增大而增大。
3.
In this paper,we focus on modifying drawbacks of Nafion membrane in order to improve capacity of water,reduce methanol permeability and the cost.
目前广泛应用的全氟磺酸质子交换膜由于成本高,工作温度低,以及甲醇透过系数高等原因,限制了其产业化应用。
2) methanol permeability
甲醇渗透系数
1.
The morphology structure,methanol permeability,tensile strength and proton conductivity of the proton exchange membrane were measured.
结果表明,以聚丙烯腈-丙烯酸为基体的质子交换膜,甲醇渗透系数为(3。
2.
The morphology,proton conductivity and methanol permeability were investigated.
011 s/cm;该质子交换膜的甲醇透过率仅为10~(-8)~10~(-7)cm~2/s,而且甲醇渗透系数不随甲醇溶液浓度的变化而变化。
3.
Although the proton conductivity of composite membrane decreased slightly,methanol permeability through the composite membrane reduced significantly.
与Nafion115相比,复合膜的质子传导率降低20%,甲醇渗透系数则降低50%。
3) methanol permeability
甲醇透过性
1.
Fourier transform infrared attenuated total reflection(FTIR-ATR) spectra,proton conductivity,methanol permeability and morphology of samples were studies.
磺化二氮杂萘酮结构的聚醚酮(SPPEK)与磷钨酸(PWA)的混合膜用两组分的DMAc混合溶液通过刮膜制备,对SPPEK/PWA膜进行了FTIR-ATR、表面形貌、质子导电性和甲醇透过性进行了研究。
4) Methanol permeability
甲醇透过率
1.
The effects of curing temperature, methanol concentration and membrane composition on the ionic conductivity and the methanol permeability of the membranes were investigated.
制备了聚乙烯醇 (PVA)与聚苯乙烯磺酸 (PSSA)的共混膜 ,并研究了膜的组成、热处理温度、甲醇水溶液浓度等对膜电导率和甲醇透过率的影响。
6) water transport coefficient
水透过系数
补充资料:选择透过系数
分子式:
CAS号:
性质:表示离子交换膜对电荷相同的异种离子的选择透过性能,用S来表示:,式中,EA、EB分别为A、B离子在膜中的迁移数,CA、CB分别为A、B离子在溶液中的浓度。影响膜选择透过系数的因素较多,如离子种类、膜的性能等。
CAS号:
性质:表示离子交换膜对电荷相同的异种离子的选择透过性能,用S来表示:,式中,EA、EB分别为A、B离子在膜中的迁移数,CA、CB分别为A、B离子在溶液中的浓度。影响膜选择透过系数的因素较多,如离子种类、膜的性能等。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条