采用高压静电纺丝法,制备了EVOH超细无纺布,通过SEM分析,研究了纺丝电压Vs、孔板距离C-SD、纺丝液中EVOH的质量分数WE、纺丝液流量Q等因素对无纺布的纤维直径以及微孔孔径分布的影响,并对无纺布的微观结构进行了表征.结果表明:当Vs达到10～40 kV,C-SD为20～30 cm时,WE在6%～15%,可以通过高压静电纺丝技术纺制出直径约为0.8～0.5 μm的超细纤维;纤维的直径主要受WE和Vs的影响,WE增大纤维直径增大,Vs增大纤维直径减小;无纺布孔径受极板形式的影响较大,且随Vs的增大变小.
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