纺织学报 ›› 2019, Vol. 40 ›› Issue (05): 18-23.doi: 10.13475/j.fzxb.20180503207

• 纤维材料 • 上一篇    下一篇

聚乙二醇/聚丙烯熔喷非织造材料的叶脉仿生结构及其保液性能

张恒1,2, 申屠宝卿1(), 章伟2, 张一风2, 崔国士3   

  1. 1.浙江大学 化学工程与生物工程学院, 浙江 杭州 310027
    2.中原工学院 纺织学院, 河南 郑州 451191
    3.河南科高辐射化工科技有限公司, 河南 洛阳 471000
  • 收稿日期:2018-05-14 修回日期:2018-12-11 出版日期:2019-05-15 发布日期:2019-05-21
  • 通讯作者: 申屠宝卿
  • 作者简介:张恒(1986—),男,讲师,博士。主要研究方向为非织造复合材料的功能性结构设计及应用。
  • 基金资助:
    国家重点研发计划资助项目(2017YFB0309100);河南省科技攻关计划资助项目(182102210518);纺织服装产业河南省协同创新中心资助项目(2017CYY006);中原工学院青年人才创新能力基金项目(K2018QN011);中原工学院青年骨干教师培养计划项目(2018XQG04)

Structure and liquid retention properties of polyethylene glycol/ polypropylene melt blown nonwoven with bionic vein networks

ZHANG Heng1,2, SHENTU Baoqing1(), ZHANG Wei2, ZHANG Yifeng2, CUI Guoshi3   

  1. 1. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
    2. School of Textiles, Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
    3. Henan Kegao Radiation Chemical Technology Co., Ltd., Luoyang, Henan 471000, China
  • Received:2018-05-14 Revised:2018-12-11 Online:2019-05-15 Published:2019-05-21
  • Contact: SHENTU Baoqing

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摘要：

为探究超细纤维非织造材料的叶脉仿生网络结构对其保液性能的影响,以聚乙二醇(PEG)共混改性聚丙烯(PP)为原料,制备了PEG/PP熔喷非织造材料,并对其纤维直径分布、不同直径的纤维数量和特征长度3个仿生结构特征参数,以及水蒸发速率和持液率进行测试与表征。结果表明:小于800 nm、800~2 000 nm和大于2 000 nm 3种尺寸纤维在水平方向上交错排列,形成非对称结构的三级水平分支网络;增大PEG质量分数和提高纺丝模头温度可增强小于800 nm纤维组成的三级分支网;样品特征长度与模头温度表现为线性正相关,水蒸发速率符合纺织材料的散湿变化规律;PEG质量分数从0%增大到15%时,PEG/PP的持液率从1 938.3%降低到1 313.1%。

关键词: 聚乙二醇, 聚丙烯, 非织造材料, 仿生结构, 叶脉分支网络, 保液性

Abstract:

In order to study the bionic vein networks structure and liquid retention properties of polyethylene glycol (PEG)/polypropylene (PP) melt blown nonwovens, the microfiber nonwovens were prepared from PEG and PP blends by melt blowing. The structure including fiber diameter distribution, the quantity density of different diameter fibers, and properties of evaporation rate and retention capacity were investigated. The results show that three kinds of fibers with diameter of smaller than 800 nm, 800-2 000 nm and larger than 2 000 nm are staggered in horizontal direction, forming three level branching networks with asymmetric characteristics. Third branched networks composed of fibers smaller than 800 nm can be adjusted by increasing the PEG ratio and die temperature. The special length is linearly and positively correlated with the die temperature. The evaporation rate of the samples with bionic vein networks accord with the law of textile materials, showing that with the increasing of PEG ratio from 0% to 15%, the liquid retention capacity decreases from 1 938.3% to 1 313.1%.

Key words: polyethylene glycol, polypropylene, nonwoven, bionic, vein branched network, liquid dispersion

中图分类号: 

  • TS167

图1

PEG/PP样品的电镜图和纤维分支分布示意图R0—一级分支结构;Ri—二级分支结构;Rj—三级分支结构。"

图2

不同PEG质量分数样品的扫描电镜照片"

图3

纤维的分支数量随PEG质量分数和模头温度的变化曲线"

图4

分支密度随PEG质量分数和模头温度的变化曲线"

图5

蒸发速率随时间的变化曲线"

图6

持液率随PEG质量分数和模头温度的变化曲线"

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