摘要
以聚偏氟乙烯为离子交换膜基体材料,将它溶解后再与苯乙烯和二乙烯苯混合,随后热引发交联共聚,得到胶状物;再经过挤出、固化、造粒、干燥、粉碎等高分子物理加工处理,得到聚苯乙烯/聚偏氟乙烯合金粉末,磺化后制备出阳离子交换粉;采用类似于异相膜生产的热压成型方法,制得具有半互穿网络结构的聚苯乙烯/聚偏氟乙烯阳离子交换合金膜。性能测试表明,膜面电阻为4.8Ω·cm2,阳离子选择透过率为96.2%,电渗析脱盐综合性能明显优于国产异相膜,与国外均相膜接近。
The polystyrene/PVDF alloy particles were prepared by pulverizing the polymerization product of styrene/DVB/PVDF in DMF, and then sulfonated with concentrated sulfuric acid to receive the catibn exchange alloy powder, which was directly thermoformed by a hot-press machine to form the titled cation exchange alloy membranes with the semi-interpenetrating network （semi-IPN） structure. The testing data indicate that the prepared membrane has the area electrical resistance of 4.8 Ω .cm2,and the cation apparent transport number of 96.2%. Its desalination effect in a pilot-scale electrodialyser is close to that of the commercial homogenous cation exchange membrane, but obviously superior to that of the hemetergenous membrane.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第1期56-58,63,共4页
Technology of Water Treatment
基金
国家863重大项目资助课题(2012AA03A605)
