Lee Seungsin, Obendorf S Kay
Department of Textiles and Apparel, Cornell University, Ithaca, New York 14853, USA.
Arch Environ Contam Toxicol. 2005 Aug;49(2):266-73. doi: 10.1007/s00244-004-0127-8. Epub 2005 Jul 27.
Statistical models estimating the level of protection and thermal comfort performance of woven fabrics were developed using simple fabric and liquid parameters. Eighteen woven fabrics were evaluated against three pesticide mixtures of atrazine and pendimethalin at different concentrations. Using three mixtures that represent a range of both surface tension and viscosity, percentages of pesticide penetration are measured, along with fabric thickness, fabric cover factor, yarn twist factor, yarn packing factor, solid volume fraction, wicking height, and air permeability. Statistical analyses are performed to examine the relationship between liquid/fabric parameters and pesticide penetration. Statistical analyses show that fabric cover factor, yarn twist factor, viscosity of pesticide mixture, critical surface tension of solid, and wicking height are significant parameters affecting pesticide penetration. For this purpose, cover factor and twist factor are better parameters in describing the geometry of woven fabrics than solid volume fraction. Modeling of comfort performance of woven fabric based on simple textile parameters shows that the combination of fabric thickness, cover factor, yarn twist factor and yarn packing factor can be used to estimate air permeability of woven fabric. These findings could be used for developing selection charts or tools as guidelines for the selection of personal protective equipment for use in hot, humid environments.
利用简单的织物和液体参数建立了估计机织织物防护水平和热舒适性能的统计模型。针对三种不同浓度的莠去津和二甲戊灵农药混合物对18种机织织物进行了评估。使用三种代表不同表面张力和粘度范围的混合物,测量农药渗透百分比,同时测量织物厚度、织物覆盖系数、纱线捻度系数、纱线填充系数、固体体积分数、芯吸高度和透气率。进行统计分析以检验液体/织物参数与农药渗透之间的关系。统计分析表明,织物覆盖系数、纱线捻度系数、农药混合物粘度、固体临界表面张力和芯吸高度是影响农药渗透的重要参数。为此,在描述机织织物几何结构方面,覆盖系数和捻度系数比固体体积分数是更好的参数。基于简单纺织参数对机织织物舒适性能进行建模表明,织物厚度、覆盖系数、纱线捻度系数和纱线填充系数的组合可用于估计机织织物的透气率。这些发现可用于制定选择图表或工具,作为在炎热潮湿环境中选择个人防护装备的指导方针。