第18卷第4期 2018年8月
材料工程
过程工程学报
The Chinese Joumal of Process Engineering
VoL18 No.4 Aug.2018
DOI: 10.12034/j.issn.1009-606X.217381
Thecharacterizationofelectrospunfibersanditsgas-liquidfiltration performance
Qiangqiang Q'-3,Xiaolin WU'-3,Feng CHEN2-3, Zhongli J123
1. College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
2. College of Mechanical and Transportation Engineering, China University of Petrolcum, Beijing 102249, China
3. Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum, Beijing 102249, China
Abstract: 3-Layers composite filters with glass fiber/polyacrylonitrile fiber/glass fiber structure were constructed by electrospinning the solutions prepared by polyacrylonitrile and dimethylformamide. The effects of electrospinning parameters such as solution concentration and spinning voltage on fiber morphology and the filtration performance were investigated, The results showed that nanofibers of different morphologies can be prepared by controlling the concentration of spinning solution, and the larger the fiber size with increasing the solution concentration. The spinning voltage had litle effect on fiber morphology, but increasing spinning voltage can reducethe pore sizeofthe electrospun fiber layer. Compared with glass fiber filter, the filtration efficiency of composite filters were improved significantly. The maximum steady-state efficiency can be increased by 21%, and the efficiency of most penetrate paticles size can be increased by 39%. However, when the pore size of composite filter was small, the process pressure drop showed a jump stage where the liquid film is formed on the surface of the nanofiber layer, leading to an increase in the stady-state pressure drop.
Key words: electrospinning: polyacrylonitrile; nanofiber; composite filter; gasliquid filtration 静电纺丝纤维滤材表征及其气液过滤性能
姬忠礼2.3
齐强强13，吴小林13，陈锋23， 1.中国石油大学(北京)化学工程学院，北京102249
2.中国石油大学(北京)机城与储运工程孕院，北京102249
3.中国石油大学(北京)过程流体过滤与分离技术北京市重点实验室，北京102249
摘要：以聚丙烯腈与二甲基甲酰胺为原料配制纺丝溶液，采用静电纺丝技术制备玻璃纤维/聚丙烯纤维/玻璃纤维三层复合滤材，研究了纺丝溶液浓度与纺丝电压等参数对纤维形貌及尺寸的影响，分析了复合滤材的过滤性能，结果表明，控制不同纺丝溶液浓度可得形貌不同的纤维，且溶液浓度越大纤维尺寸越大；纺丝电压对纤维形貌的影响较小，但增加纺丝电压使静电纺纤维层的孔径减小，相比玻璃纤维滤材，复合滤材过滤效率明显提升，稳态效率最大可提升21%，最易穿透粒径效率最大可提升
39%，但复合滤材孔径较小时，过程压降增加了一段跳跃阶段，纳米纤维层表面形成液膜，使复合滤材稳态压降升高关键词：静电纺丝；聚丙烯睛：纳米纤维；复合滤材；气液过滤
中图分类号：TE832;TS102.5
1
前言
文献标识码：A
文章编号：1009606X(2018)040799-10
损坏气体输送的管道及仪器仪表，影响设备机组长
压缩空气与天然气等气体中往往存在小液滴，容易
期稳定运行[1.2]纤维滤材是目前除去气体中小液滴的
收稿：20171102,修回：20171204,网络发表： 20180519,Received:20171102, Revised: 20171204, Published online: 2018-0519 基金项目：国家自然科学基金资助项目(编号：51474229)
作者简介：齐强强(1993-)，男，润北省邮单市人，硕士研究生，化工过程机专业，E-mai:qiqiangq@foxmail.eom：期忠礼，通讯联系人，E-mail
jizhongli63@vip.sina.com
引用格式：齐强强，吴小林，陈锋，等。静电纺丝纤维滤材表征及其气液过滤性能。过程工程学报，2018，18(4)：799-808.
Qi Q Q, Wu X L, Chen F, et al. The characterization of eiectrospun fibers and its gasliquid filtration performance (in Chinese) Chin.J.Process Eng,2018,18(4): 799808,DOI: 10.12034j.ssn.1009606X.217381
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