▎ 摘　　要

NOVELTY - A super-hydrophobic polyvinylidene fluoride microporous membrane preparing method involves dispersing graphene and nano-silicon dioxide in polar aprotic solvent and sonicating to obtain dispersion liquid. The dispersion liquid is added with polyvinylidene fluoride and polyvinylpyrrolidone, stirred and degassed to obtain casting solution. The casting solution is coated on film for generating nascent membrane. The nascent membrane is immersed in primary bath gel, followed by immersing in deionized water, changing water for every 5-12 hours and drying to obtain the finished product. USE - Method for preparing super-hydrophobic polyvinylidene fluoride microporous membrane. ADVANTAGE - The method enables preparing super-hydrophobic polyvinylidene fluoride microporous membrane with good compression performance, good hydrophobic and lipophilic character and good application prospect, in simple manner. DETAILED DESCRIPTION - A super-hydrophobic polyvinylidene fluoride microporous membrane preparing method involves weighing certain amount of graphene and nano-silicon dioxide, dispersing in polar aprotic solvent and sonicating for 3-20 hours to obtain dispersion liquid. The dispersion liquid is added with certain amount of polyvinylidene fluoride and polyvinylpyrrolidone, stirred and subjected for ultrasonic degassing for 1-5 hours to obtain casting solution. The casting solution is coated on film for generating nascent membrane. The nascent membrane is immersed in primary bath gel, followed by immersing in deionized water for 2-8 days, changing water for every 5-12 hours and drying to obtain the finished product.