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材料工程  2018, Vol. 46 Issue (2): 41-49    DOI: 10.11868/j.issn.1001-4381.2016.000766
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
溶液静电纺丝制备热塑性聚酰亚胺超细纤维无纺布
陈俊1, 张代军2, 张天骄1, 包建文2, 钟翔屿2, 张朋2, 刘巍1
1. 北京服装学院 材料科学与工程学院, 北京 100029;
2. 中航工业复合材料技术中心, 北京 101300
Preparation of Thermoplastic Polyimide Ultrafine Fiber Nonwovens by Electrospinning
CHEN Jun1, ZHANG Dai-jun2, ZHANG Tian-jiao1, BAO Jian-wen2, ZHONG Xiang-yu2, ZHANG Peng2, LIU Wei1
1. School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China;
2. AVIC Composite Technology Center, Beijing 101300, China
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摘要 为实现热塑性聚酰亚胺(LPI)无纺布的宏量制备奠定基础,以N-N-二甲基乙酰胺(DMAc)为溶剂,采用静电纺丝技术成功制备了平均直径范围为0.36~1.47μm的LPI超细纤维,系统探讨了纺丝液浓度、流速以及纺丝电压等工艺条件对LPI纤维形貌和直径的影响。结果表明:随着浓度从22%(质量分数,下同)增加到30%,LPI纤维的平均直径显著增大,同时直径分布逐渐变宽,并且在纺丝溶液浓度较低时,有纺锤状纤维存在,随着溶液浓度上升,纺锤状纤维消失,随浓度继续上升,纤维开始产生粘连。纺丝电压的改变对纤维的形貌和平均直径变化不显著;随着流速增加,纤维平均直径随之增大,当流速大于1.5mL/h时,开始出现纤维粘连,大于1.8mL/h时,出现纺锤状纤维。通过优化工艺条件,在LPI浓度28%,电压15kV,流速1.2mL/h,温度30℃,接收距离25cm条件下,制备了平均直径为1.18μm的纤维。
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陈俊
张代军
张天骄
包建文
钟翔屿
张朋
刘巍
关键词 聚酰亚胺静电纺丝超细纤维微观形貌    
Abstract:The superfine fiber of thermoplastic polyimide(LPI), whose average diameter ranges from 0.36μm to 1.47μm, was prepared through electrospinning with DMAc as solvent. It lays a good foundation for the mass preparation of LPI non-woven. The influence of electrospinning process conditions, including LPI concentration, flow rate and voltage, on morphology of LPI fiber was investigated systematically. The results show that the average diameter increases and the fibers diameter distribution turns wider with the LPI concentration increasing from 22%(mass fraction, same as below) to 30%. Meanwhile, when the concentration is rather lower, some cambiform fibers can be observed. As the concentration increases, the cambiform fiber disappears. While the concentration increases continually, the fibers are adhered to be flakiness. The change of the spinning voltage makes little difference on the average diameter of fibers; the average diameter of fibers increases with the increase of the flow rate of LPI solution; when the flow rate is more than 1.5mL/h, the fibers start to be adhered, the cambiform fibers appear while the flow rate is over 1.8mL/h. Through optimizing the process, the LPI fibers with average diameter of 1.18μm were prepared under 30℃ with the conditions of 28% concentration, 15kV voltage, 1.2mL/h flow rate and the 25cm receiving distance.
Key wordspolyamide    electrospinning    ultrafine fiber    microstructure
收稿日期: 2016-06-22      出版日期: 2018-02-01
中图分类号:  TB332  
通讯作者: 张天骄(1972-),女,副教授,博士,主要从事高性能纤维的研究,联系地址:北京服装学院材料楼415(100029),clyztj@bift.edu.cn     E-mail: clyztj@bift.edu.cn
引用本文:   
陈俊, 张代军, 张天骄, 包建文, 钟翔屿, 张朋, 刘巍. 溶液静电纺丝制备热塑性聚酰亚胺超细纤维无纺布[J]. 材料工程, 2018, 46(2): 41-49.
CHEN Jun, ZHANG Dai-jun, ZHANG Tian-jiao, BAO Jian-wen, ZHONG Xiang-yu, ZHANG Peng, LIU Wei. Preparation of Thermoplastic Polyimide Ultrafine Fiber Nonwovens by Electrospinning. Journal of Materials Engineering, 2018, 46(2): 41-49.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000766      或      http://jme.biam.ac.cn/CN/Y2018/V46/I2/41
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