毛织物孔隙特征与透湿性关系
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摘要
为探索毛织物的孔隙特征对其透湿性的作用机制,建立毛织物孔隙特征与其透湿性的经验关系模型,采用体积孔隙率、表面孔隙率和平均孔径分别从不同角度对毛织物的孔隙特征进行表征,用湿阻表征织物透湿性;分别测试了24种毛织物试样的孔隙指标和湿阻;最后分别建立各孔隙特征指标与湿阻的多项式回归模型。得到的经验关系曲线表明:3个织物孔隙特征指标分别与湿阻呈一定程度的非线性相关性,且都呈先正相关后负相关的特征,即湿阻在一定区域存在最高值;当体积孔隙率为60%时湿阻进入最高值区域;当表面孔隙率超过1. 5%时,其对湿阻的影响关系开始明显,表面孔隙率在3%附近湿阻呈最高值;当平均孔径在45μm左右时,湿阻到达最高区域。
In order to investigate on the influence mechanism of the capillary structure on moisture permeability of wool fabrics,empirical models describing the relationship between capillary characteristics and moisture permeability of wool fabrics were built. Three indices of volume porosity,surface porosity and the average pore size were adopted to describe capillary characteristics of wool fabrics from different aspects. And the index of wet resistance was used to represent the moisture permeability of fabrics. For twenty-four types of wool fabric samples,the capillary characteristic indices were measured as well as wet resistance. Finally,polynomial regression analysis was conducted between each capillary characteristic index and the wet resistance index. The obtained empirical relationship curves present similar tendencies.The indices of volume porosity,surface porosity and the average pore size present nonlinear correlations with wet resistance to a certain extent respectively. Along with the growth of each capillary index,the wet resistance first shows positive correlation and then negative correlation. That is,the wet resistance reaches a maximum value in certain regions. For the volume porosity-wet resistance relation curve,the wet resistance reaches maximum when the volume porosity is about 60%. The surface porosity-wet resistance relationship gets clear when surface porosity rises beyond 1. 5%,and at about 3% of surface porosity,the wet resistance reaches maximum. Similarly,the wet resistance stops increasing as the average pore size arises to about 45 μm.
In order to investigate on the influence mechanism of the capillary structure on moisture permeability of wool fabrics,empirical models describing the relationship between capillary characteristics and moisture permeability of wool fabrics were built. Three indices of volume porosity,surface porosity and the average pore size were adopted to describe capillary characteristics of wool fabrics from different aspects. And the index of wet resistance was used to represent the moisture permeability of fabrics. For twenty-four types of wool fabric samples,the capillary characteristic indices were measured as well as wet resistance. Finally,polynomial regression analysis was conducted between each capillary characteristic index and the wet resistance index. The obtained empirical relationship curves present similar tendencies.The indices of volume porosity,surface porosity and the average pore size present nonlinear correlations with wet resistance to a certain extent respectively. Along with the growth of each capillary index,the wet resistance first shows positive correlation and then negative correlation. That is,the wet resistance reaches a maximum value in certain regions. For the volume porosity-wet resistance relation curve,the wet resistance reaches maximum when the volume porosity is about 60%. The surface porosity-wet resistance relationship gets clear when surface porosity rises beyond 1. 5%,and at about 3% of surface porosity,the wet resistance reaches maximum. Similarly,the wet resistance stops increasing as the average pore size arises to about 45 μm.
引文
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[9]李毅,王晓东.毛织物的某些结构参数与织物热舒适物理指标的关系[J].毛纺科技,1985,13(2):28-33.LI Yi, WANG Xiaodong. Effects of some structural parameters of wool fabrics on physical comfort of fabric thermal comfort[J]. Wool Textile Journal, 1985,13(2):28-33.
[10]姚穆,施楣梧.织物湿传导理论与实际的研究:第二报:织物湿传导理论方程的研究[J].西北纺织工学院学报,2001,15(2):9-14.YAO Mu, SHI Meiwu. Theoretical and practical research on wet conduction theory of fabrics:second report:theoretical study on wet conduction theory of fabrics[J]. Journal of Northwest Institute of Textile Technology,2001,15(2):9-14.
[11] FANGUEIRO R,GONCALVES P,SOUTINHO F,et al. Moisture management performance of functional yarns based on wool fibres[J]. Indian Journal of Fibre&Textile Research,2009,34(4):315-320.
[12] 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.
[13] LI Y, ZHONG Xuanluo. An improved mathematical simulation of the coupled diffusion of moisture and heating in wool fabric[J]. Textile Research Journal,1999,69(10):760-768.
[14]陈振宇,周玲.织物孔隙率的测定方法及对紫外性能的影响[J].现代纺织技术,2009(4):42-43.CHEN Zhenyu,ZHOU Ling. Effects of fabric porosity and its effect on UV properties[J]. Advanced Textile Technology,2009(4):42-43.
[15]李芳,周蓉,湖生.四种涤纶机织物过滤性能的对比研究[J].山东纺织科技,2011(2):4-6.LI Fang,ZHOU Rong,HU Sheng. Comparative study on filtration performance of four polyester woven fabrics[J]. Shandong Textile Science and Technology,2011(2):4-6.
[16]张新安.仿毛机织物静态导湿机理探讨[J].毛纺科技,2008,36(4):57-59.ZHANG Xin'an. Study on the mechanism of wetting mechanism of polyester/viscose wool-like fabric under the static state[J]. Wool Textile Journal, 2008,36(4):57-59.
[2]徐广标,邱茂伟,王府梅.精纺毛织物的孔隙与结构及透气性的关系[J].毛纺科技,2005,33(4):14-17.XU Guangbiao, QIU Maowei, WANG Fumei. The relationship between porosity and structure and air permeability of worsted wool fabric[J]. Wool Textile Journal,2005,33(4):14-17.
[3]吴海军,钱坤.毛织物的孔隙与结构对其透气性的影响[C]//2006中国国际毛纺织会议暨IWTO羊毛论坛论文集(上册).西安:中国毛纺织行业协会,2016:241-244.WU Haijun. QIAN Kun. Effects of pore and structure of wool fabric on its permeability[C]//2006 China International Wool Textile Conference and IWTO Wool BBS on(I). Xi'an:China Wool Textile Industry Association,2006:241-244.
[4]范菲,齐宏进.织物孔径特性与织物结构及芯吸性能的关系[J].纺织学报,2007,28(7):38-41.FAN Fei,QI Hongjin. Relationship between capillary properties and configurations and wicking capability of fabric[J]. Journal of Textile Research,2007,28(7):38-41.
[5]范菲,齐宏进.差动毛细效应与织物孔径特性的关系[J].纺织导报,2008(8):90-92.FAN Fei,QI Hongjin. Relationship between differential capillary effect and fabric aperture characteristics[J].Textile Guide,2008(8):90-92.
[6]姚穆,施楣梧,蒋素婵.织物湿传导理论与实际的研究:第一报:织物的湿传导过程与结构的研究[J].西北纺织工学院学报,2001,15(2):1-8.YAO Mu,SHI Meiwu,JIANG Suchan. Fabric moisture theory and practical research:first report:the study of fabric wet conduction process and fabric structure[J].Journal of Northwest Institute of Textile Technology,2001,15(2):1-8.
[7] YANILMAZ M, KALAOGLU F. Investigation of wicking,wetting and drying properties of acrylic knitted fabrics[J]. Textile Research Journal,2012,82(8):820-831.
[8] FRAGIADAKI E,HARAHALAKIS S,KALOGIANNI E. Characterization of porous media by dynamic wicking combined with image analysis[J]. Colloids and Surfaces:A:Physicochemical and Engineering Aspects,2012,413:50-57.
[9]李毅,王晓东.毛织物的某些结构参数与织物热舒适物理指标的关系[J].毛纺科技,1985,13(2):28-33.LI Yi, WANG Xiaodong. Effects of some structural parameters of wool fabrics on physical comfort of fabric thermal comfort[J]. Wool Textile Journal, 1985,13(2):28-33.
[10]姚穆,施楣梧.织物湿传导理论与实际的研究:第二报:织物湿传导理论方程的研究[J].西北纺织工学院学报,2001,15(2):9-14.YAO Mu, SHI Meiwu. Theoretical and practical research on wet conduction theory of fabrics:second report:theoretical study on wet conduction theory of fabrics[J]. Journal of Northwest Institute of Textile Technology,2001,15(2):9-14.
[11] FANGUEIRO R,GONCALVES P,SOUTINHO F,et al. Moisture management performance of functional yarns based on wool fibres[J]. Indian Journal of Fibre&Textile Research,2009,34(4):315-320.
[12] 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.
[13] LI Y, ZHONG Xuanluo. An improved mathematical simulation of the coupled diffusion of moisture and heating in wool fabric[J]. Textile Research Journal,1999,69(10):760-768.
[14]陈振宇,周玲.织物孔隙率的测定方法及对紫外性能的影响[J].现代纺织技术,2009(4):42-43.CHEN Zhenyu,ZHOU Ling. Effects of fabric porosity and its effect on UV properties[J]. Advanced Textile Technology,2009(4):42-43.
[15]李芳,周蓉,湖生.四种涤纶机织物过滤性能的对比研究[J].山东纺织科技,2011(2):4-6.LI Fang,ZHOU Rong,HU Sheng. Comparative study on filtration performance of four polyester woven fabrics[J]. Shandong Textile Science and Technology,2011(2):4-6.
[16]张新安.仿毛机织物静态导湿机理探讨[J].毛纺科技,2008,36(4):57-59.ZHANG Xin'an. Study on the mechanism of wetting mechanism of polyester/viscose wool-like fabric under the static state[J]. Wool Textile Journal, 2008,36(4):57-59.