Prediction of the Pore Size Distribution in Spunbond-Needlepunched Nonwoven Geotextiles Based on a Stochastic Simulation

Z. Heng, Qian Xiaoming
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引用次数: 1

Abstract

Pore size distribution is the key factor of the nonwoven geotextiles for various functions including filtration, separation and reinforcement. The comparison of pore size distributions of spunbond-needle punched nonwoven geotextiles has been made among the theoretical, experimental and the virtual study based on a stochastic simulation. Moreover, the influence of fiber diameter, solid volume fraction, and the thickness of the nonwoven geotextiles on the pore size distribution of the nonwoven geotextiles has been investigated. It is demonstrated that the pore size distribution, which obtained using Geodict® based on a stochastic simulation, shows a good agreement with experimental data and theoretical, and it is feasible for the prediction of pore size distribution in spunbond-needle punched nonwoven geotextiles. The results show that increasing the solid volume fraction would decrease the pore size of the nonwoven geotextiles under the same filament diameter and same thickness of the webs. Increasing fiber diameter would cause the pore size decreasing, while thickness and solid volume fraction kept constant also found. The results also show that the pore size decreasing with the thickness of the nonwoven geotextiles increasing, while the constant of the solid volume fraction and filaments diameter.
基于随机模拟的纺-针刺非织造土工布孔径分布预测
孔径分布是非织造土工布发挥过滤、分离、加固等多种功能的关键因素。对纺粘针刺非织造土工布的孔径分布进行了理论、实验和基于随机模拟的虚拟研究对比。此外,还研究了纤维直径、固体体积分数和非织造土工布厚度对非织造土工布孔径分布的影响。结果表明,基于随机模拟的Geodict®计算得到的孔隙尺寸分布与实验数据和理论数据吻合较好,对针刺非织造土工布的孔隙尺寸分布进行预测是可行的。结果表明:在相同丝径和相同腹板厚度的情况下,增加固体体积分数会减小非织造土工布的孔径;纤维直径增大,孔径减小,纤维厚度和固体体积分数保持不变。结果还表明,非织造土工布的孔隙尺寸随厚度的增加而减小,而固相体积分数和细丝直径则随厚度的增加而增大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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