锯齿引导型无针熔体微分电纺工艺  

Exploratory study of sawtooth-guidance type melting differential electrospinning

作　　者：秦永新[1] 安瑛[1] 杨涛[1] 张艳萍[1] 李轶[1] 杨卫民[1] 李好义[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2017年第6期76-80,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家重点研发计划(2016YFB0302002);北京市自然科学基金(2141002);国家自然科学基金(51603009)

摘　　要：提出一种锯齿引导型无针熔体微分静电纺丝工艺方法,用来改进熔体静电纺丝纤维直径不均匀问题。首先将其与无锯齿引导型无针熔体微分静电纺丝进行对比,然后在自制的设备上进行正交试验,以探究其最佳纺丝工艺参数。试验结果表明:锯齿引导提高了纤维的均匀性,在聚丙烯(PP)进料流速一定的条件下,最佳纺丝工艺参数为纺丝温度240℃、纺丝电压65 k V以及纺丝距离105 mm;在此条件下测得最小的纤维平均直径为820 nm。Sawtooth-guidance type needleless melt electrospinning has been proposed as a way to improve the nonuniformity of melt electrospinning fibers. The new method was first compared with conventional melt electrospinning without sawtooth-guidance. The optimum spinning process parameters for sawtooth-guidance type needleless melt electrospinning were then determined by orthogonal experiments on self-regulating equipment. The experiments demonstrated that sawtooth-guidance type needleless melt electrospinning improves the uniformity of fiber diameter and the most appropriate spinning process parameters are as follows： a spinning temperature of 240 ℃,a pressure of 65 k V and a distance of 105 mm,with the mass flow rate as a constant. Moreover,Taylor-cones are distributed at the sawtooth tips,and the average minimum fiber diameter was 820 nm.

关 键 词：熔体静电纺丝 锯齿引导 正交试验 纤维直径均匀 

分 类 号：TQ340.64[化学工程—化纤工业]