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
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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%。
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%.
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%.
引文
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[18] 姜涛.PEG、EVA、WSPET改性丙纶流变行为的研究[J].石油化工高等学校学报,2003,16(1):39-42.JIANG Tao.The rheological behavior of PEG,EVA,WSPET modified polypropylene fiber [J].Journal of Petrochemical Universities,2003,16(1):39-42.
[19] SHOU Dahua,LI Ye,FAN Jintu.Treelike networks accelerating capillary flow [J].Physical Review E Statistical Nonlinear & Soft Matter Physics,2014,89(5):053007.
[20] PAN Ning,CHEN Julie,SEO Moon,et al.Micromechanics of a planar hybrid fibrous network [J].Textile Research Journal,1997,67(12):907-925.
[21] LI Y,HOLCOMBE B V.A two-stage sorption model of the coupled diffusion of moisture and heat in wool fabrics[J].Textile Research Journal,1992,62(4):211-217.
[22] 张锐.水刺非织造材料工艺参数与其保湿性之间的关系研究[D].杭州:浙江理工大学,2010:59-66.ZHANG Rui.Study on the relationship between the process parameters of spunlaced non-woven and its moisture permeability [D].Hangzhou:Zhejiang Sci-tech University,2010:59-66.
[2] HAN W l,GAJANAN S B,WANG X H.Investigation of nanofiber breakup in the melt-blowing process [J].Industrial & Engineering Chemistry Research,2016,55(11):3150-3156.
[3] ZHANG Haifeng,LIU Jinxin,ZHANG Xing,et al.Design of electret polypropylene melt blown air filtration material containing nucleating agent for effective PM2.5 capture [J].Rsc Advances,2018,8(15):7932-7941.
[4] ZHANG Chune,WEI Tian,LI Dandan,et al.The high performances of SiO2 coated melt-blown non-woven fabric for lithium-ion battery separator [J].The Journal of Textile Institute,2018,109(9):1254-1261.
[5] 魏发云,张伟,邹学书,等.等离子体诱导丙烯酸接枝改性聚丙烯熔喷非织造材料[J].纺织学报,2017,38(9):109-114.WEI Fayun,ZHANG Wei,ZOU Xueshu,et al.Grafted modification of polypropylene melt-blown nonwowen materials with acrylic acid induced by plasma [J].Journal of Textile Research,2017,38(9):109-114.
[6] KOU Jianlong,CHEN Yanyan,ZHOU Xiaoyan,et al.Optimal structure of tree-like branching networks for fluid flow[J].Physica A:Statistical Mechanics and its Applications,2014,393(1):527-534.
[7] SHOU Dahua,FAN Jintu.Design of nano-and microfibrous channels for fast capillary flow[J].Langmuir,2018,34(4):1235-1241.
[8] 田伟,韩旭,邢肖平,等.提花水刺非织造布的吸湿扩散性能[J].纺织学报,2014,35(9):47-50.TIAN Wei,HAN Xu,XING Xiaoping,et al.Moisture absorbing and diffusing capacity of jacquard spun laced nonwovens [J].Journal of Textile Research,2014,35(9):47-50.
[9] SHOU Dahua,LI Ye,FAN Jintu,et al.Geometry-induced asymmetric capillary flow[J].Langmuir the Acs Journal of Surfaces & Colloids,2014,30(19):5448-5454.
[10] FAN Jintu,SARKAR M K,SZETO Y C,et al.Plant structured textile fabrics[J].Materials Letters,2007,61(2):561-565.
[11] CHEN Qing,FAN Jintu,MANAS Sarkar.Biomimetics of plant structure in knitted fabrics to improve the liquid water transport properties [J].Textile Research Journal,2010,80(6):568-576
[12] SARKAR M,FAN Jintu,SZETO Y C,et al.Biomimetics of plant structure in textile fabrics for the improvement of water transport properties[J].Textile Research Journal,2009,79(7):657-668.
[13] 张恒,甄琪,钱晓明,等.聚酯/聚酰胺中空橘瓣型超细纤维非织造材料的孔径预测[J].纺织学报,2018,39(1):56-61.ZHANG Heng,ZHEN Qi,QIAN Xiaoming,et al.Prediction of pore sizes of polyester/polyamide 6 hollow segmented-pie microfiber nonwovens [J].Journal of Textile Research,2018,39(1):56-61.
[14] 张恒,甄琪,钱晓明,等.仿生树型超高分子量聚乙烯柔性防刺复合材料制备及其透湿性能[J].纺织学报,2018,39(4):63-68.ZHANG Heng,ZHEN Qi,QIAN Xiaoming,et al.Preparation and moisture permeability of ultra-high molecular weight polyethylene flexible stab-resistant composite with dendritic structure[J].Journal of Textile Research,2018,39(4):63-68.
[15] 张志亮,刘国东,张富仓,等.植物叶片导水率的研究进展[J].生态学杂志,2014,33(6):1663-1670.ZHANG Zhiliang,LIU Guodong,ZHANG Fucang,et al.Research progress of plant leaf hydraulic conductivity [J].Chinese Journal of Ecology,2014,33(6):1663-1670.
[16] 龚容,高琼.叶片结构的水力学特性对植物生理功能影响的研究进展[J].植物生态学报,2015,39(3):300-308.GONG Rong,GAO Qiong.Research progress in the effects of leaf hydraulic characteristics on plant physiological functions [J].Chinese Journal of Plant Ecology,2015,39(3):300-308.
[17] 迟长龙,于翔,李静静,等.PP/PEG共混体系熔体流变性能研究 [J].塑料科技,2013,41(5):43-47.CHI Changlong,YU Xiang,LI Jingjing.Research on melt rheological properties of PP/PEG blends [J].Plastics Science & Technology,2013,41(5):43-47.
[18] 姜涛.PEG、EVA、WSPET改性丙纶流变行为的研究[J].石油化工高等学校学报,2003,16(1):39-42.JIANG Tao.The rheological behavior of PEG,EVA,WSPET modified polypropylene fiber [J].Journal of Petrochemical Universities,2003,16(1):39-42.
[19] SHOU Dahua,LI Ye,FAN Jintu.Treelike networks accelerating capillary flow [J].Physical Review E Statistical Nonlinear & Soft Matter Physics,2014,89(5):053007.
[20] PAN Ning,CHEN Julie,SEO Moon,et al.Micromechanics of a planar hybrid fibrous network [J].Textile Research Journal,1997,67(12):907-925.
[21] LI Y,HOLCOMBE B V.A two-stage sorption model of the coupled diffusion of moisture and heat in wool fabrics[J].Textile Research Journal,1992,62(4):211-217.
[22] 张锐.水刺非织造材料工艺参数与其保湿性之间的关系研究[D].杭州:浙江理工大学,2010:59-66.ZHANG Rui.Study on the relationship between the process parameters of spunlaced non-woven and its moisture permeability [D].Hangzhou:Zhejiang Sci-tech University,2010:59-66.
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