High zero-pollution-flux PVDF tubular microporous membrane preparation method

The invention relates to a high zero-pollution-flux PVDF tubular microporous membrane preparation method. In the prior art, the existing microporous membrane has large running resistance during watertreatment, and is easily polluted to cause the frequent backwashing process and the drug washing process so as to difficultly achieve the high zero-pollution-flux. The preparation method comprises: 1,preparing a betaine modified clay mixing liquid; 2, preparing a membrane casting solution; 3, spinning; and 4, drying to obtain the high zero-pollution-flux PVDF tubular microporous membrane. According to the present invention, the high zero-pollution-flux PVDF tubular microporous membrane is used for various water treatment and chemical industry separation processes, is used in water supply treatment replacing the traditional precipitation pool or filtering pool, wastewater treatment and reuse, material separation and concentration, and other fields, and does not require rinsing. 一种高零污染通量PVDF管式微孔膜的制备方法，本发明涉及一种高零污染通量P