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影响聚醚砜微孔滤膜孔径的因素

[导读]以聚醚砜(PES)为膜材料,二甲基乙酰胺为溶剂,醇类为非溶剂添加剂,聚乙烯基吡咯烷酮(PVP)为高分子添加剂,研究了铸膜液成分及制膜条件对聚醚砜微孔滤膜的影响

     聚醚砜(PES) 是一种综合性能优良的聚合物膜材料,其玻璃化温度高达230摄氏度,优异的耐热性、耐酸碱、耐压力、耐腐蚀等性能已广为认知,常作为超滤、纳滤膜的材料,近年来也用于制微孔滤膜,制成的微孔滤膜适用于较高操作温度,耐PH值范围大,但是该材料制膜过程中对温度、适度影响非常敏感,孔径容易受到制膜条件的影响而变化,增加了制膜的难度,国内关于PES微孔滤膜的研制,其平均孔径常为0.1μm左右,而工业上常用的微孔滤膜孔径如0.22μ、0.45μ尚未见报到。

   SUIZHEPESNONGDUDEZENGJIA,PINGJUNKONGJINGSUIZHIJIANXIAO,ZUIDAKONGJINGYESUIZHIJIANSHAO,ZUIDAKONGJINGBIANHUAFUDUBIPINGJUNKONGJINGLAIDEDA,PESNONGDUZENGJIAYIHOU,GAOFENZIZHIJIANXIANGHUJIECHUDEJIHUIZENGJIA,ZHUMOYEZAIFASHENGXIANGFENLISHI,JUHEWUFUXIANGZENGDUO,PINXIANGJIANSHAO,JIKONGJINGDESHENGCHENGSHOUDAOYINGXIANG;TONGSHI,PINXIANGWEIBAOZHIJIANPENGZHUANGDEJIHUIJIANSHAO,YEYIWEIZHEKONGYUKONGZHIJIANDEGUANTONGXINGSHOUDAOYINGXIANG,YINCISHUITONGLIANGJIANXIAOJIANLVSUFAZECEDINGDEMOPINGJUNKONGJINGYEJIANSHAO,ZUIDAKONGJINGBIPINGJUNKONGJINGDAXUDUO,JIMOKONGJINGFENBUBIJIAOKUAN,SUIZHENONGDUSHENGGAO,MOKONGFENBUBIANZHAI,SHIJIYINGYONGZHONG,YAOQIUWEIKONGLVMOYOUYIDINGDEJIXIEQIANGDU,PESNONGDUTAIDI,QIJIXIEQIANGDUXIAJIANG,ERQIECHENGMOSHIRONGYIXINGCHENGZHENKONG,CONGZONGHEJIAODUKAOLV,PESNONGDUYIBANQU14%-18%

1、为制取有应用前景的聚醚砜微孔滤膜,高分子浓度应保持在14%-18%,使制的的微孔滤膜既有适当的通量大小,又有一定的机械强度。

2、ZHUMOYEDEFEIRONGJILIANGQUJUEYUFEIRONGJIBENSHENXINGZHIHEZHUMOYEZHONGQITAZUFENDELIANG,SHIDANGDELIANGPEIHETESHUDEZHIKONGJIRUPVPDENG,KEYIZHIDEGAOTONGLIANGWEIKONGLVMO

3、KONGQIZHONGBAOLUSHIJIANDUIJUMIFENGWEIKONGLVMODEJIEGOUXINGNENGYINGXIANGJIAODA,SHIDANGDEBAOLUSHIJIAN,KEYIZHIDEKONGJINGZHAIFENBU、GAOTOULIANGDEWEIKONGLVMO。

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