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为研制出低成本高效过滤微滤膜,对熔体静电纺丝制备的聚丙烯(PP)纤维过滤膜进行了探究,通过改变电压、风速及温度等参数对单、双电极熔体静电纺丝进行试验,得出熔体静电纺丝双电极电纺膜性能优于单电极电纺膜的结论。采用熔体静电纺丝双电极装置制备出平均纤维直径2μm的过滤膜,验证了采用熔体静电纺丝制备高通量过滤膜的可行性,通过对比得出熔体电纺过滤膜的纯水通量是市售孔径0.45μm PP过滤膜的5倍之多,且对大于其纤维直径的微粒的截留率高达95%以上,力学性能好,可用作预过滤膜对污水进行预处理。
In order to develop a low-cost and high-efficiency microfiltration membrane, the polypropylene (PP) fiber membrane prepared by melt electrospinning was investigated. By changing parameters such as voltage, wind speed and temperature, single- and double-electrode melt electrospinning The experimental results show that the performance of melt electrospinning two-electrode electro-spinning film is better than single-electrode electrospinning film. The electrospinning two-electrode device was used to prepare the filter membrane with an average fiber diameter of 2μm. The feasibility of using the electrospinning melt to prepare a high-throughput filter membrane was verified. The pure water The flux is five times larger than that of the commercially available 0.45 μm PP filter membrane, and retains more than 95% of the particles larger than its fiber diameter. It has good mechanical properties and can be used as a prefiltration membrane to pretreat sewage.