Effect of Particle Hardness on the Penetration Behavior of Fabrics Intercalated with Dry Particles and Concentrated Particle-Fluid Suspensions
Effect of Particle Hardness on the Penetration Behavior of Fabrics Intercalated with Dry Particles and Concentrated Particle-Fluid Suspensions
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DOI：
10.1021/am900516w
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发表时间：
2009-11-01
影响因子：
9.5
通讯作者：
Wetzel, Eric D.
中科院分区：
文献类型：
--
作者：
Kalman, Dennis P.;Merrill, Richard L.;Wetzel, Eric D.
研究了干燥颗粒和剪切增稠流体（STF）（高浓度的流体-颗粒悬浮液）插入凯夫拉纤维织物的渗透行为。特别是，通过比较含有SiO2颗粒（比凯夫拉纤维硬得多）和含有较软的聚甲基丙烯酸甲酯（PMMA）颗粒的织物处理，探讨了颗粒硬度的作用。织物测试包括纱线拉拔，准静态刺穿和弹道穿透阻力，在单织物层上进行。研究发现，相对于纯或聚乙二醇（PEG）处理的织物，干颗粒和STF处理都能改善织物的性能。在不同颗粒硬度处理的对比中，SiO2材料在所有测试中的表现都优于同类PMMA材料，尽管SiO2处理导致纱线在拉拔测试中失效，降低了总拉拔能量。此外，经stf处理的织物比干颗粒处理的织物对纱线的抗拔性要高得多。然而，添加干颗粒和STF处理在穿刺和抗弹道性方面都表现出相当的增强。这些观察结果表明，粘性应力传递、摩擦和硬颗粒进入长丝的物理夹带有助于用剪切增稠液创建的保护织物性能的改善。
The penetration behavior of Kevlar fabric intercalated with dry particles and shear thickening fluids (STF), highly concentrated fluid-particle suspensions, is presented. In particular, the role of particle hardness is explored by comparing fabric treatments containing SiO2 particles, which are significantly harder than Kevlar, to treatments containing softer poly(methyl methacrylate) (PMMA) particles. The fabric testing includes yarn pull-out, quasi-static spike puncture, and ballistic penetration resistance, performed on single fabric layers. It was found that both dry particle and STF treatments resulted in improvements in fabric properties relative to neat or poly(ethylene glycol) (PEG) treated fabrics. On comparison of treatments with different particle hardness, the SiO2 materials performed better in all tests than comparable PMMA materials, although the SiO2 treatments caused yarn failure in pull-out testing, reducing the total pull-out energy. In addition, resistance to yarn pull-out was found to be substantially higher for STF-treated fabrics than for dry particle treated fabrics. However, both dry particle addition and STF treatments exhibited comparable enhancements in puncture and ballistic resistance. These observations suggest that viscous stress transfer, friction, and physical entrainment of hard particles into filaments contribute to the demonstrated improvements in the properties of protective fabrics created with shear thickening fluids.