作　　者： ; ; ; ; ;

机构地区： 哈尔滨理工大学材料科学与工程学院

出　　处： 《材料科学与工艺》 2004年第3期287-290,共4页

摘　　要： 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10～40kV,C-SD为20～30cm时,WE在6%～15%,可以通过高压静电纺丝技术纺制出直径约为0.8～0.5μm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. The poly(ethylene-co-vinyl alcohol) (EVOH) non-wovens are prepared by the electrospinning technique. The influence factors-the starting electric voltage (V_S), capillary-screen distance(C-SD), aqua density(W_E)and flux which affect the fiber diameter and their distribution of the tiny bore occuring in the non-woven are discussed and the SEM is utilized to characterize the features of the non-woven. Results show that the non-woven can be prepared by the electrospinning technique when the V_S is 10～40 kV, C-SD is (20～30 cm,) and the diameter of the fiber electrospun on this condition is around 0.8～5 μm; the diameter of the fiber is influenced mainly by W_E and V_S, the diameter of the fiber increases with W_Eand decreases with V_S; the diameter of the bore in the non-woven is influenced greatly by the condition of receiver-plate and decreased with V_S.

关 键 词： 高压静电纺丝 超细纤维 无纺布 显微结构 聚合物纤维

领　　域： [化学工程]