· 摘要: 高强度Kevlar纤维机织织物被广泛应用于发动机机匣包容上，剪切增稠液(Shear thickening fluid, SFT)被发现可以有效增加Kevlar织物的能量吸收能力。通过设计针对单束纤维束的相应加强片与夹具，在MTS材料试验机与霍普金森拉杆上开展室温下的(20 …
· Shear thickening fluids (STFs) have been developed for various applications such as body armor, viscoelastic dampers, and sports equipment. In this paper, the …
· 2.3. Characterization. The morphology of the Kevlar fabric, STF/Kevlar and CNT/STF/Kevlar are characterized by SEM (JEOL JSM-6700F). The rheological …
· As the fabric of 浙江理工大学硕士学位论文 STF-Kevlar、UHMWPE 织物复合形式及其防弹性能研究 IV polypropylene spacing decreases, better permeability is got by …
Two types of multi-phase shear-thickening fluids (STFs) are prepared by adding high modulus materials such as carbon nanotubes (CNTs) and Kevlar staple fibers to a nano …
· Preparation of Kevlar/STF composite: the STF was diluted with ethanol (1:4). The fabrics which could be cut into different sizes were immersed in the diluted solution for 3 …
· Impact energy absorption for untreated Kevlar fabric was measured as 25.3 J and for single padding process the best result was 62.6 J (STF treated Kevlar fabric, 70% …
· Request PDF | Light shear thickening fluid (STF)/Kevlar composites with improved ballistic impact strength | Shear thickening fluids (STFs) have been developed …
· The Comparison of the rheological analysis revealed that the viscosity of the H-STF, A-STF, and C-STF increased by 12.73, 9.65, and 3.46 times to the pure STF, respectively while the critical ...
· STF/Kevlar to achieve wearable textiles with both sensing and protec-tive properties. In this work, a novel CNT/STF/Kevlar-based wearable electronic textile with …
本文在课题组前期研究的基础上,优化剪切增稠液体 (STF)制备工艺及复合工艺;以芳纶纤维 (Kevlar)、超高分子量聚乙烯纤维 (ultra-high molecular weight polyethylene,简称UHMWPE)为原料,采用Kevlar平纹织物、UHMWPE无纬布 (UD布)及课题组自织的织物,改变铺层位置、角度、织物结构 ...
· A colloidal shear thickening fluid (STF) was prepared by dispersing submicron silica particles in Polyethylene glycol 200(PEG200) with ball-milling technique. Kevlar/STF composites were fabricated by soaking Kevlar in the solution of STF diluted by ethanol. The rheological behavior of the fluid with various concentrations and the effect of dilution ratio …
The STF-Kevlar target STF-Kevlar exhibit comparable load histories, with exhibits significantly better stab resistance as compared slightly higher loads in the STF-Kevlar case. ... 2003), these results show that STF- performance fabrics, such as ultrahigh molecular weight Kevlar protective fabrics could offer knife protection with polyethylene ...
· Request PDF | Light shear thickening fluid (STF)/Kevlar composites with improved ballistic impact strength | Shear thickening fluids (STFs) have been developed for various applications such as ...
· 朱文佳, 汪泽幸, 祝振威, 等. STF/Kevlar复合材料的制备与冲击撕裂性能[J]. 产业用纺织品, 2018, 36(12):41-44. ZHU Wenjia, WANG Zexing, ZHU Zhenwei, et al. Preparation and impact tearing performance of STF/Kevlar composites[J]. Technical Textiles, 2018
· The Comparison of the rheological analysis revealed that the viscosity of the H-STF, A-STF, and C-STF increased by 12.73, 9.65, and 3.46 times to the pure STF, respectively while the critical ...
· Therefore, compared to STF-Kevlar without additives, STF-Kevlar with strong frictional solid particles positively affects the impact and stab resistance of the fabric. Conclusion In this study, nano-silica and polyethylene glycol (PEG 200) were used as the dispersed and continuous phases, nano-graphite and nano-diamond particles were used …
· To fabricate the STF/Kevlar composites, the STF samples were firstly diluted 1:2 with water and then mixed for 30 min in ultrasonic dispersion method to ensure the solution was well-distributed. The Kevlar fabrics were cut and soaked in the solution individually for 5 min. After the impregnation, the fabrics were dried at 40 C to evaporate …
· DOI: 10.1016/j.polymertesting.2022. Corpus ID:4; Shear response behavior of STF/kevlar composite fabric in picture frame test @article{Ma2022ShearRB, title={Shear response behavior of STF/kevlar composite fabric in picture frame test}, author={Yu Jun Ma and Xiang Hong and Zhenkun Lei and Ruixiang …
Application of a shear thickening fluid (STF) treatment to neat Kevlar has been reported to improve fabric ballistic performance, for impacts of 0.22 caliber fragment simulating projectiles at velocities near 800 feet per second. In recent research, the authors have evaluated the ballistic performance of STF Kevlar in a series of impact experiments …
STF-Kevlar织物抗高速冲击机理与影响因素研究. 柳旭. 【摘要】： Kevlar纤维织物由于具有良好的抗冲击性能,被广泛地应用于大涵道比涡扇发动机软壁包容系统中,能够保证在具有优良的包容能力的同时大幅减轻发动机的重量。. 剪切增稠液体 (shear thickening fluid,STF)是 ...
1.3 STF-Kevlar 柔性复合材料的制备 采用无水乙醇与水按一定比例混合后，稀释配制成的 STF；将 Kevlar 织物剪成 10cm×10cm 方片，已剪好的织物方片在上述稀释后的溶液中浸泡，浸泡后的织 物放置于空气中展平晾干后放在 80℃的烘燥箱中烘干 24h。
The STF-Kevlar target STF-Kevlar exhibit comparable load histories, with exhibits significantly better stab resistance as compared slightly higher loads in the STF-Kevlar case. ... 2003), these results show that STF- performance fabrics, such as ultrahigh molecular weight Kevlar protective fabrics could offer knife protection with polyethylene ...
· Request PDF | Light shear thickening fluid (STF)/Kevlar composites with improved ballistic impact strength | Shear thickening fluids (STFs) have been developed for various applications such as ...
· The knife drop-tower tests showed that adding the STF may improve the energyabsorption by20%.The yarn pull-out testdemonstratedthatthe maximum pull-outforce ofthe STF/Kevlar composites is 3.17 times that of neat Kevlar. The enhancements in the physical properties were apparently associated with the addition of the STF.
There is a tremendous effort going on by various researchers to impregnate high-performance aramid fabrics, such as Kevlar, with STF for liquid body armor [8,[11] [12] [13][14][15]. This ...
Application of a shear thickening fluid (STF) treatment to neat Kevlar has been reported to improve fabric ballistic performance, for impacts of 0.22 caliber fragment simulating projectiles at velocities near 800 feet per second. In recent research, the authors have evaluated the ballistic performance of STF Kevlar in a series of impact experiments …
· Kevlar) low velocity impact behaviour of neat and shear thickening fluid (STF) impregnated kevlar, hybrid (Kevlar/Carbon) and carbon fabrics was investigated. In the first stage, STFs with the silica concentrations of 5 wt%, 10 wt%, 15 wt% and ... purposes such as Kevlar, but also to improve the hybrid and carbon fabrics that can be used in ...
· DOI: 10.1016/j.polymertesting.2022. Corpus ID:4; Shear response behavior of STF/kevlar composite fabric in picture frame test @article{Ma2022ShearRB, title={Shear response behavior of STF/kevlar composite fabric in picture frame test}, author={Yu Jun Ma and Xiang Hong and Zhenkun Lei and Ruixiang …
· 西安科技大学面向海内外招聘人才！. 西安科技大学1958年建校，现在是应急管理部和陕西省人民政府共建高校、国家中西部高校基础能力建设工程实施高校、陕西省高水平大学建设高校。. 学校有雁塔和临潼两个校区，占地面积121万㎡；学校设有研究生院和20个 ...
STF-Kevlar织物抗高速冲击机理与影响因素研究. 柳旭. 【摘要】： Kevlar纤维织物由于具有良好的抗冲击性能,被广泛地应用于大涵道比涡扇发动机软壁包容系统中,能够保证在具有优良的包容能力的同时大幅减轻发动机的重量。. 剪切增稠液体 (shear thickening fluid,STF)是 ...
1.3 STF-Kevlar 柔性复合材料的制备 采用无水乙醇与水按一定比例混合后，稀释配制成的 STF；将 Kevlar 织物剪成 10cm×10cm 方片，已剪好的织物方片在上述稀释后的溶液中浸泡，浸泡后的织 物放置于空气中展平晾干后放在 80℃的烘燥箱中烘干 24h。
单根纤维束由于质量轻、体积小和力学性能弱而难以获取其参数，本文设计了一种 与霍普金森拉杆系统适配的新型夹具，对不同浓度 STF 强化的 Kevlar 纤维束开展 准静态与动态拉伸试验，获取其力学性能。. 对比分析了准静态和动态试验材料力学 性能和破坏形态 ...
· Originated from this wonderful effect, the shear thickening fluids (STF) could reasonably strengthen the Kevlar fabrics. After Lee firstly developed the STF/Kevlar , the as-named fluidic body armor attracted increasing interests in anti-impact equipment. The detailed anti-impact mechanism of the STF/Kevlar has been intensively studied and it ...
· performance fabrics such as Kevlar, Twaron, Dyneema, or Spectra are used. These fabric materials ... Many researchers have investigated the effects of impregnating STF into Kevlar fabric. The impregnated fabrics have been impact tested under low velocity, high velocity, and quasi-static conditions [6,7,8,9] and has been shown to significantly ...
· DOI: 10.1016/j.polymertesting.2022. Corpus ID:4; Shear response behavior of STF/kevlar composite fabric in picture frame test @article{Ma2022ShearRB, title={Shear response behavior of STF/kevlar composite fabric in picture frame test}, author={Yu Jun Ma and Xiang Hong and Zhenkun Lei and Ruixiang …
· 西安科技大学1958年建校，现在是应急管理部和陕西省人民政府共建高校、国家中西部高校基础能力建设工程实施高校、陕西省高水平大学建设高校。学校有雁塔和临潼两个校区，占地面积121万㎡；学校设有研究生院和20个学院（部），现有7个一级学科博士点，6个博士后科研流动站，学校在全国第 ...
Afin de faciliter l'imprégnation du STF au tissu la première étape serait une dilution de celui si dans un autre fluide que l’on pourrait après éliminer par évaporation. Le solvant choisi est l’éthanol, le STF est dilué puis on imprègne le kevlar. Une fois celui-ci saturé par la solution il est mis au four durant 20 min à 80°C ...
· The impregnated Kevlar fabric yields a flexible, yet penetration resistant composite material. Fragment simulation projectile (FSP) ballistic penetration measurements at ∼244 m/s have been performed to demonstrate the efficacy ... such as particle aggregation, which results in poor fluid and coating qualities. The
· Kevlar-STF composites. 2.1.1. Kevlar fabric target model . In order to properly model the Kevlar fabric, the microstructure of the fabric presents a plain weave structure composed of crisscrossed yarns. Depending on the above structure, it is more suitable to use shell elements for modeling.