Santos Thiago F, Santos Caroliny M, Rangappa Sanjay Mavinkere, Siengchin Suchart, Nascimento J H O
Postgraduate Program in Chemical Engineering, Technology Center, Federal University of Rio Grande do Norte, Av. Prof. Sen. Salgado Filho, 3000, Natal, Rio Grande do Norte, 59072-970, Brazil.
Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand.
Heliyon. 2023 Jul 29;9(8):e18805. doi: 10.1016/j.heliyon.2023.e18805. eCollection 2023 Aug.
Shear thickening fluids (STFs) refer to non-Newtonian fluids of the dilatant variety, wherein their viscosity experiences a significant surge with an escalation in the shear rate. In this investigative work, the friction behavior between yarns (pull-out) and absorption of static and kinetic energy during the phenomenon of friction between yarns in STFs are performed by monophase (MP-STF) adding nano SiO and dual-phase (MP-STF) adding carbon nanotubes. The ρ-Aramid fabrics were reinforced via the "foulard process", and carried out on MP-STF, and DP-STF/ρ-Aramid-impregnated fabrics to evaluate and compare with the enhancement in interfacial friction properties between yarns. The results showed that DP-STF has more significant than MP-STF and MP-STF in ultimate load, kinetic shear stress, static shear stress, and friction energy level effects. The DP-STF exhibits various friction enhancement mechanisms at the yarn interface, leading to higher absorption of static and kinetic energy related to interfacial friction, as indicated by the results obtained. Furthermore, the DP-STF/ρ-Aramid impregnated fabrics exhibited ultimate load (22.23 ± 0.522 N), kinetic shear stress (35.73 ± 0.850 MPa100), static shear stress (36.28 ± 0.900 MPa100), and friction energy level (610.33 ± 0.250). Increased ultimate load (581.7% and 180.7%), kinetic shear stress (621.4% and 174.6%), static shear stress (550.5% and 159.1%), and friction energy level (680.2 and 186.7%) compared to WT-STF and MP-STF, respectively. The current discoveries hold immense potential for various applications in the fields of engineering and smart material technologies. These applications span a multiplicity of industries, including sports products, medical advancements, space technology, as well as protective and shielding products.
剪切增稠流体（STF）是指膨胀型非牛顿流体，其粘度会随着剪切速率的增加而显著增大。在这项研究工作中，通过添加纳米二氧化硅的单相（MP-STF）和添加碳纳米管的双相（DP-STF）来研究纱线之间的摩擦行为（拔出）以及STF中纱线摩擦现象期间的静动能吸收情况。采用“印花法”对ρ-芳纶织物进行增强处理，并在MP-STF和DP-STF/ρ-芳纶浸渍织物上进行，以评估和比较纱线间界面摩擦性能的增强效果。结果表明，在极限载荷、动剪切应力、静剪切应力和摩擦能级效应方面，DP-STF比MP-STF和单相STF更显著。结果表明，DP-STF在纱线界面表现出多种摩擦增强机制，导致与界面摩擦相关的静动能吸收更高。此外，DP-STF/ρ-芳纶浸渍织物的极限载荷为（22.23±0.522 N），动剪切应力为（35.73±0.850 MPa100），静剪切应力为（36.28±0.900 MPa100），摩擦能级为（610.33±0.250）。与WT-STF和MP-STF相比，极限载荷分别提高了（581.7%和180.7%），动剪切应力分别提高了（621.4%和174.6%），静剪切应力分别提高了（550.5%和159.1%），摩擦能级分别提高了（680.2和186.7%）。目前的发现对于工程和智能材料技术领域的各种应用具有巨大潜力。这些应用涵盖多个行业，包括体育用品、医学进步、太空技术以及防护和屏蔽产品。
