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Flexible and Reusable non-woven fabric Photodetector Based on Polypyrrole/Crystal Violate Lactone for NIR Light Detection and Writing

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Advanced Fiber Materials 2020年第3期2卷 150-160页

作者： Shuangping Yang Daniel K.Macharia Sharjeel Ahmed Bo Zhu Qiuping Zhong Haifeng Wang Zhigang Chen State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Rapid NIR light detection and/or writing has drawn much attention,but their practical applications have been limited by obtaining such NIR *** address this problem,we have developed a simple and versatile strategy to prepare a non-woven fabric *** blue non-woven fabric photodetector has been prepared by coating photo-thermochromic ink(including crystal violet lactone(CVL)as the thermo-sensitive dye,polypyrrole(PPy)nanospheres as the photothermal component and hydroxyethyl cellulose(HEC)as the polymer matrix)on white non-woven *** the blue fabric photodetector is irradiated by NIR(808-nm as model,0.75 W cm^(−2))laser,the discoloration occurs in 35 s,and higher laser intensity confers more rapid *** discoloration results from the photothermal effect of PPy which confers the elevation of temperature(>50℃)and then converts CVL to its leuco form(colorless).When the laser is turned off,the temperature drops to below the transition temperature(fabric photodetector by 808 nm laser,and then they can be erased automatically under ambient conditions,with excellent cycling ***,this fabric photodetector may act as a new platform for rapid NIR light detection and writing.

关键词： non-woven fabric Photodetector Photothermal effects NIR light detection

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fabrication of non-woven fabric-Based SERS Substrate for Direct Detection of Pesticide Residues in Fruits

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Journal of Analysis and Testing 2017年第4期1卷 322-329页

作者： Lemei Cai Zhuo Deng Jing Dong Shidong Song Yiru Wang Xi Chen Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamenFujian 361005China

In surface-enhanced Raman scattering(SERS),flexible substrate plays an important role in target molecular collection from various shape surfaces and increases the analytical *** this study,silver nanoparticles(Ag NPs)were deposited on a non-woven fabric used as an SERS substrate by self-assembly,in situ growing or the self-assembly/in situ growing combination method.4-Aminothiophenol was selected as a model molecular for the evaluation of the SERS performance using the *** Ag NPs substrate prepared by self-assembly/in situ growing method presented the best Raman enhancement effect and its enhancement factor was estimated as high as *** substrate was applied to the determination of four pesticide residues on the surfaces of fruit samples through wipe sampling,and the results revealed the good reproducibility of SERS responses and high detection *** prepared flexible substrate was simple to fabricate and environmentally *** could be expected to be a useful tool in rapid on-site test of pesticide residues on fruit surfaces because of its high sensitivity,convenience and non-destructive characteristics.

关键词： SERS non-woven fabric Flexible substrate Pesticide residues

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A new kind of resin-based wet friction material:non-woven fabrics with isotropic fiber networks as preforms

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Friction 2021年第1期9卷 92-103页

作者： Yewei FU Le ZHOU Tao YIN Zhongyao LUO Hejin LI Lehua QI State Key Laboratory of Solidification Processing Shaanxi Province Key Laboratory of Fiber Reinforced Light Composite MaterialsNorthwestern Polytechnical UniversityXi’an 710072China

As an alternative to short fibers,non-woven fabrics(NWFs)were made using different types of long fibers to optimize the performance of paper-based friction materials and their *** this investigation,the fillers and resin were impregnated into these NWFs to prepare three kinds of wet friction *** tribological,mechanical,and thermal properties of the new wet friction material were *** results indicate that the dynamic friction coefficient of the new friction material is approximately 0.12 and the static friction coefficient is approximately 0.15;the better wear rate is 0.81334×10^(-14)m^(3)·(N·m)^(-1).In addition,the temperature for 10%mass loss yielded 100°C enhancement and the tensile strength was improved by 200%,compared to previously reported *** importantly,the advantages include a simple preparation flow,low cost,and resource *** is a promising approach for the future development of paper-based friction materials.

关键词： non-woven fabric wet friction material continued friction film green manufacture speed

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A Cell-Based Smoothed Finite Element Method for Modal Analysis of non-woven fabrics

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Computers, Materials & Continua 2021年第6期67卷 2765-2795页

作者： Nguyen T.Quyen N.Dourado A.J.P.Gomes F.B.N.Ferreira C2T—Centro de Ciência e Tecnologia Têxtil Departamento de Engenharia TêxtilUniversidade do MinhoCampus de AzurémGuimarães4804-533Portugal CMEMS-UMinho Departamento de Engenharia MecânicaUniversidade do MinhoCampus de AzurémGuimarães4804-533Portugal Department of Computer Science Universidade da Beira InteriorConvento de Sto.AntónioCovilhã6201-001Portugal Instituto de Telecomunicações R.Marquês deÁvila e BolamaCovilhã6201-001Portugal

The combination of a 4-node quadrilateral mixed interpolation of tensorial components element(MITC4)and the cell-based smoothed finite element method(CSFEM)was formulated and implemented in this work for the analysis of free vibration and unidirectional buckling of shell *** formulation was applied to numerous numerical examples of non-woven *** CSFEM schemes do not require coordinate transformation,spurious modes and numerical instabilities are prevented using bilinear quadrilateral element subdivided into two,three and four smoothing *** improvement of the original CSFEM formulation was made regarding the calculation of outward unit normal vectors,which allowed to remove the integral operator in the strain smoothing *** procedure conducted both to the simplification of the developed formulation and the reduction of computational cost.A wide range of values for the thickness-to-length ratio and edge boundary conditions were *** developed numerical model proved to overcome the shear locking phenomenon with success,revealing both reduced implementation effort and computational cost in comparison to the conventional FEM *** cell-based strain smoothing technique used in this work yields accurate results and generally attains higher convergence rate in energy at low computational cost.

关键词： Mindlin-Reissner theory of plates shear-locking gradient/strain smoothing technique non-woven fabric

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Development of Environmental Protection Air Filter Media

Development of Environmental Protection Air Filter Media

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2010年信息技术和管理科学国际研讨会

作者： Hongxiao Xiao Xinyu Li Long Liu Yujie Liu Dandan Zhao School of Textiles Tianjin Polytechnic University Tianjin 300160 China

This article briefly summarized the production process,products structure,performance and wide application range of non-woven filter materials which were made of glass fiber,analyzed the importance in the filter field... 详细信息

关键词： Air filter material glass fiber non-woven fabric composite media

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