硬脂酸及辅助气流对熔体微分静电纺的影响  

Effect of stearic acid and assisted air flow on polypropylene melt differential electrospinning process

作　　者：马小路[1] 李好义[1] 谭晶[1] 阎华[1] 张莉彦[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《纺织学报》2016年第10期8-12,共5页Journal of Textile Research

基　　金：中央高校基本科研业务费专项资金项目(ZY1532;ZY1520);北京市自然科学基金资助项目(2141002)

摘　　要：为得到细化的纳米纤维,利用自制的熔体微分静电纺丝装置,在聚丙烯（PP）中添加硬脂酸进行熔体微分静电纺丝,讨论硬脂酸含量对纤维的细化作用,同时探究在纤维下落时,气动抽风装置中的气流速度对纤维牵伸细化作用。实验结果表明：在纺丝温度为260℃,添加质量分数为2%-10%的硬脂酸有助于降低PP熔体的黏度和细化纤维直径;当硬脂酸质量分数为4%时纤维细化效果最好。当通入的气流速度从13 m/s增加到29 m/s时纤维直径明显细化（气流最大速度为29 m/s）。当硬脂酸质量分数为4%,气流速度为29 m/s时,纤维直径大都小于500 nm,平均直径可达420 nm。In order to obtain refined nanofibers,polypropylene（ PP） melt was electrospun into fibers by adding stearic acid on a self-made melt differential electrospinning unit,and the effect of stearic acid content on PP fiber diameter was discussed,at the same time the airflow speed of the pneumatic convulsions device for fiber drawing were explored. The result showed that the viscosity of the melt reduced and the PP fibers obviously refined as the addition of stearic acid was 2%- 10% by mass fraction and the spinning temperature was 260 ℃; and when the stearic acid mass fraction is 4%,fiber diameter was relatively the finest. Fiber diameter significantly reduced when the air velocity increased from 13 m / s to 29 m / s（ maximum air velocity is 29 m / s）. The produced PP fiber had the diameter generally below 500 nm,and the average diameter of 420 nm when the mass fraction of stearic acid was4% and the air velocity was 29 m / s.

关 键 词：聚丙烯 硬脂酸 直径细化 气流速度 纳米纤维 

分 类 号：TQ342.31[化学工程—化纤工业]