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2nd International Conference on Smart Materials and Nanotechnology in engineering

作者： Yao, Wei-Hua Yeh, Jen-Taut Chou, Wen-Li Shu, Yao-Chi Department of Material and Fiber Oriental Institute of Technology Taipei Taiwan Faculty of Chemistry and Material Science Hubei University Wuhan China Graduate School of Polymer Engineering National Taiwan University of Science and Technology Taipei Taiwan Department of Textile Engineering Nanya Institute of Technology Jungli Taiwan Department of Polymer Material Vanung University Jungli Taiwan

ISBN: (纸本)9780819478047

The study is describing Nylon yarn, though with low weight (specific weight 1.14), good elongation and high strength (4.59.5 g/d). Through the combination of irregular section long staple fiber to reach the core yarn, spun from Nylon fiber and long filament fiber, not only has the advantages of Nylon product but also has it can be used for making army-bag which can enhance the abrasion resistance, low weight and coving yarn that has doubled yarn effect from yarn surface consisting of Nylon fiber and long filament fiber. We used a Hamel's Elasto Twister (hollow-spindle machine) to prepare the yarn samples for our study. During spinning, the spindle speed was kept the same, while yarn through put speed was varied to obtain different wrap twists (700, 800, 900, 1000 T/M). The wrapping yarn is Nylon yarn with different count (40, 70D) and core yarn is ultra-high molecular weight polyethylene (UHMWPE) filament with 375 deniers, respectively. The results revealed the covered yarn have good physical properties and will be good performance in army-bag and army uniform. Keywords: Nylon, abrasion resistance, UHMWPE, physical properties © 2009 Copyright SPIE - The International Society for Optical engineering.

关键词： Yarn

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Use of layer-by-layer deposition on fibers to make conductive organic filaments

Use of layer-by-layer deposition on fibers to make conductiv...

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作者： Tsotsisa, Thomas K. Kotov, Nicholas Zhu, Jian Kumar, Satish Chae, Han Gi Choi, Young Ho Jain, Rahul Baek, Jong-Beom Department of Chemical Engineering University of Michigan Ann Arbor MI United States School of Polymer Textile and Fiber Engineering Georgia Institute of Technology Atlanta GA United States Ulsan National Institute of Science and Technology Korea Republic of

ISBN: (纸本)9781934551073

Layer-by-layer (LBL) deposition of carbon nanotubes (CNTs) over fibers that are also reinforced with CNTs has been performed and shows promise for a scalable process for making conductive organic filaments. Descriptions of the fabrication of polymer filaments and LBL-deposition methods will be provided along with some results and examples of possible applications of this technology.

关键词： Carbon nanotubes

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Mesoporous activated carbon nanofiber synthesis from catalytic graphitization of polyacrylonitrile/cobalt sulfide composite

Mesoporous activated carbon nanofiber synthesis from catalyt...

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fiber Society 2012 Fall Meeting and Technical Conference in Partnership with polymer fibers 2012: Rediscovering fibers in the 21st Century

作者： Aykut, Yakup Pourdeyhimi, Behnam Khan, Saad A. Department of Textile Engineering Uludaǧ University Bursa16059 Turkey Fiber and Polymer Science North Carolina State University RaleighNC27695-8301 United States Chemical and Biomolecular Engineering North Carolina State University RaleighNC27695-7905 United States

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Centrifugal Spinning: An Alternative Approach to Produce Nanofibers at High Speed and Low Cost

Centrifugal Spinning: An Alternative Approach to Produce Nan...

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The 89th textile Institute World Conference(第89届世界纺织大会)

作者： Yao Lu Xiangwu Zhang Fiber and Polymer Science Program Department of Textiles EngineeringChemistry and ScienceNorth Carolina State University

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Nanofiber-Based Membrane Separators for Lithium-ion Batteries

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MRS Online Proceedings Library (OPL) 2015年第1期1718卷 157-161页

作者： Mataz Alcoutlabi Hun Lee Xiangwu Zhang Department of Mechanical Engineering University of Texas-Pan American Edinburg TX 78539 USA. Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science North Carolina State University Raleigh NC 27695-8301 USA

Nanofiber-based membranes were prepared by two different methods for use as separators for Lithium-ion batteries (LIBs). In the first method, Electrospinning was used for the fabrication of Polyvinylidene fluoride PVDF nanofiber coatings on polyolefin microporous membrane separators to improve their electrolyte uptake and electrochemical performance. The nanofiber-coated membrane separators show better electrolyte uptake and ionic conductivity than that for the uncoated membranes. In the second method, Forcespinning® (FS) was used to fabricate fibrous cellulose membranes as separators for LIBs. The cellulose fibrous membranes were made by the Forcespinning® of a cellulose acetate solution precursor followed by a subsequent alkaline hydrolysis treatment. The results show that the fibrous cellulose membrane-based separator exhibits high electrolyte uptake and good electrolyte/electrode wettability and therefore can be a good candidate for high performance and high safety LIB separators.

关键词： polymer energy storage nanostructure

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A Review on Digital Simulation Strategies and Its Applications for Advanced Compression Garments

A Review on Digital Simulation Strategies and Its Applicatio...

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作者： Seonyoung Youn Ryan Darden Kavita Mathur Fiber and Polymer Science Ph.D.program North Carolina State University Department of Textile Engineering Chemistry and Sciences M.S.Textile Engineering program North Carolina State University Department of Textile and Apparel Technology and Management North Carolina State University

This paper presents a comprehensive review on the current state of digital simulation technology and its strategic application usages with a key focus on advanced compression garments. Although three-dimensional(3D) digital garment simulators have significantly impacted the apparel and textile industry, their use has been limited to visual prototyping, quality checking, or marketing. The physical properties of garment simulators have been overlooked in advanced functional manufacturing. This literature review investigates the possibility of strategically utilizing virtual physical properties to enhance garment functions, specifically in wearables and medical-grade compression fields. The first phase of this paper gives an overview of the current state of 3D garment simulation tools and their measurement features. This is followed by a gap analysis between simulated and physical property evaluations, focusing on minimizing the gaps. The literature is thoroughly examined to identify appropriate studies that uses digital tools for compressional garments and add value to wearables and healthcare applications. This paper provides valuable insights for apparel and textile engineers, enabling them to better understand the limitations and capabilities of garment simulators in improving advanced features for specific end users.

关键词： 3D Digital Garment Simulator Advanced Compression Garment Digital Strategy Medical-grade Compression Simulated Physical Property Virtual Evaluation

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A Braided Flexible Zn-MnO2 Yarn Battery Based on Cobweb-Like Carbonized Polypyrrole Modified Carbon fiber Electrodes

SSRN

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SSRN 2023年

作者： Chen, Lei Hu, Kairui Yang, Ke Yanilmaz, Meltem Han, Xu Liu, Yong Zhang, Xiangwu School of Textile Science and Engineering Tiangong University Tianjin300387 China Department of Textile Engineering Istanbul Technical University Istanbul Turkey Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University RaleighNC27695 United States

Flexible zinc ion batteries (ZIBs) are promising candidate for energy storage devices because of high safety and low cost. Carbon fiber (CF) is an ideal current collector for ZIBs due to its good flexibility, electrical conductivity and corrosion resistance. Herein, a novel CF-based current collector is proposed. At first, the inertness and non-polarity of CF were significantly modified by activating and etching to obtain a multi-layered pore structure. After then, carbonized polypyrrole (CPPy) nanowire conductive networks were built up on etched carbon fiber (ECF) by electrochemical in-situ growing and carbonization. Based on the CPPy network, MnO2 nanoflowers were grown firmly by the hydrothermal method to construct a multilayer MnO2@CPPy@ECF composite electrode. The multi-layered three-dimensional CPPy conductive network is rooted in the interior of MnO2, providing a dedicated transmission path for both electrons and ions during electrochemical redox reactions. The MnO2@CPPy@ECF electrode had an initial capacity of 346.1 mAh·g-1 at 0.1 A·g-1 and 252.8 mAh·g-1 after 800 cycles. In addition, the integrated flexible Zn-MnO2 2D fabric battery with MnO2@CPPy@ECF fabric cathode shows a specific capacity of 254.7 mAh·g-1 at 0.1 A · g-1. Finally, a flexible Zn-MnO2 yarn battery with unique structural advantages of high flexibility, shape adaptability, structural integrity and good mechanical stability was fabricated by the 2D braid method. The initial specific capacity of the flexible Zn-MnO2 yarn battery is 111.7 mAh·g-1 at 0.1C, and the coulomb efficiency reaches more than 98%. This work opens up a new pathway for the rational design of flexible electrodes for wearable ZIBs. © 2023, The Authors. All rights reserved.

关键词： Yarn

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Electrospinning of Neat Graphene Nanofbers

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Advanced fiber Materials 2022年第2期4卷 268-279页

作者： Zhanpo Han Jiaqing Wang Senping Liu Qinghua Zhang Yingjun Liu Yeqiang Tan Shiyu Luo Fan Guo Jingyu Ma Peng Li Xin Ming Chao Gao Zhen Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringKey Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang ProvinceZhejiang University38 Zheda RoadHangzhou 310027People’s Republic of China State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 200051People’s Republic of China State Key Laboratory of Bio-Fibers and Eco-Textiles Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile TechnologySchool of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China

Macroscopic assembly of graphene sheets has renovated the preparation of neat carbonaceous fbers with integrating high performance and superior functionalities,beyond the pyrolysis of conventional polymeric *** date,graphene microfbers by the liquid crystalline wet-spinning method have been ***,how to reliably prepare continuous neat graphene nanofbers remains ***,we present the electrospinning of neat graphene nanofbers enabled by modulating colossally extensional fow state of graphene oxide liquid *** use polymer with mega molecular weight as transient additives to realize the colossal extensional fow and *** neat graphene nanofbers feature high electronic quality and crystallinity and exhibit high electrical conductivity of 2.02×10^(6) S/m that is to be comparable with single crystal graphite *** electrospinning of graphene nanofbers was extended to prepare large-area fabric with high fexibility and superior specifc electrical/thermal *** electrospinning of graphene nanofbers opens the door to nanofbers of rich two-dimensional sheets and the neat graphene nanofbers may grow to be a new species after conventional carbonaceous nanofbers and whiskers in broad functional applications.

关键词： Electrospinning Graphene nanofber Functional fabrics

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Nanosized [email protected] , [email protected] @CNF and [email protected] @C composites via chemical vapour deposition method for use in advanced lithium-ion batteries

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Journal of Power Sources 2014年 253卷 366-372页

作者： Shuli Li Chen Chen Kun Fu Ryan White Chengxin Zhao Philip D. Bradford Xiangwu Zhang Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science North Carolina State University Raleigh NC 27695-8301 USA Department of Materials Science and Engineering North Carolina State University Raleigh NC 27695-8301 USA Department of Physics University of Oslo Oslo 0316 Norway

Three distinct Ge nanoparticle-filled carbon nanofiber (CNF) composites, [email protected] , [email protected] @CNF and [email protected] @C, were fabricated by chemical vapor deposition (CVD) and electrospinning techniques. These different structures were prepared by: 1) dispersing Ge nanoparticles into CNF, 2) adding carbon-coated Ge nanoparticles ( [email protected] ) prepared by CVD into CNF, and 3) depositing CVD carbon onto [email protected] , respectively. Compared with the [email protected] composite, both [email protected] @CNF and [email protected] @C had additional amorphous carbon coating fabricated by the CVD method. The three composites were studied as binder-free electrodes for rechargeable lithium-ion batteries. Raw Ge anode materials suffered from serious volume changes and nanoparticle aggregations during cycling, resulting in pulverization and capacity loss. However, carbon nanofiber and the supplemental CVD carbon layer in these nanofiber composites could help preserve the structural integrity of the alloy anode materials during repeated cycling, and consequently, lead to improved cycling stability. In this work, it was found that among the three composites, [email protected] @C exhibited the highest capacity retention of 89% at the 50th cycle due to the structurally-durable thorn-like Ge morphology and the additional CVD carbon confinement. [email protected] and [email protected] @CNF encountered rapid capacity loss because large Ge clusters were formed and jeopardized the integrity of the electrode structure during cycling.

关键词： Lithium alloy Germanium Chemical vapor deposition Electrospinning Lithium-ion battery

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Unconfined, melt-edge electrospinning for scale-up

Unconfined, melt-edge electrospinning for scale-up

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fiber Society 2016 Spring Conference: textile Innovations - Opportunities and Challenges

作者： Wang, Qingqing Randolph, Addison Thoppey, Nagarajan Muthuraman Bochinski, Jason R. Clarke, Laura I. Gorga, Russell E. School of Textiles and Clothing Jiangnan University China Biomedical Engineering NC State University United States Fiber and Polymer Science Program NC State University United States Department of Physics NC State University United States

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