硬脂酸及辅助气流对熔体微分静电纺的影响

纺织学报 ›› 2016, Vol. 37 ›› Issue (10): 8-12.

硬脂酸及辅助气流对熔体微分静电纺的影响

收稿日期:2015-07-21 修回日期:2016-05-27 出版日期:2016-10-15 发布日期:2016-10-31

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

Received:2015-07-21 Revised:2016-05-27 Online:2016-10-15 Published:2016-10-31

摘要/Abstract

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13m/s 增加到29m/s时纤维直径明显细化（气流最大速度为29m/s）。当硬脂酸质量分数为4%，气流速度为29m/s时，纤维直径大都小于500nm，平均直径可达420nm。

关键词: 聚丙烯, 硬脂酸, 直径细化, 气流速度, 纳米纤维

Abstract:

In order to obtain refined nanofibers, polypropylene(PP) melt was electrospun into fibers by adding stearic acid on a selfmade melt differential electrospinning unit, The effects of stearic acid content on PP fiber diameter were discussed，At the same time the airflow speed of the pneumatic convulsions device for fiber drawing were explored. The result showed that PP fibers obviously thining as the addition of stearic acid was 2%－10% by mass fraction and the spinning temperature was 260℃; When the stearic acid mass fraction is 4%, fiber diameters are relatively the finest. Fiber diameter significantly thining when going into the air velocity increased from 13 m/s to 29 m/s(Maximum speed is 29m/s). the produced PP fiber had the diameter generally below 500 nm and the average diameter of 420 nm as the mass fraction of stearic acid was 4% and the air velocity was 29m/s．

Key words: polypropylene, stearic acid, refining diameter, air velocity, nanofiber

马小路李好义谭晶阎华张莉彦. 硬脂酸及辅助气流对熔体微分静电纺的影响[J]. 纺织学报, 2016, 37(10): 8-12.

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