碳气凝胶改性全氟磺酸质子交换膜的性能

摘要

利用苯酚-甲醛体系的碳气凝胶对全氟磺酸质子交换膜进行改性,考察了碳气凝胶粒径以及添加量对改性效果的影响,并将其应用于电吸附脱盐过程分析了其脱盐效果.结果表明,采用平均粒径为9.76nm,比表面积为590mg/g且质量分数为2%添加量的中孔碳气凝胶改性后的全氟磺酸质子交换膜在含水率、保水率、溶胀度以及导电性方面性能优异,并且应用于电吸附脱盐过程效果明显.%The perfluorosulfonate ion exchange membrane was modified by carbon aerogel of phenol formaldehyde system. The parameters affecting the modified membrane were studied. The results indicated that the optimum carbon aerogel to be used for modification were particle size of 9.76nm,specific surface area of 590m2/g and carbon aerogel content of 2％. Under such conditions, the modified membrane's performance was outstanding and could be used in desalination by electrosorb technology.