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Yu L.-H.,Tianjin Polytechnic University | Wang R.,Tianjin Polytechnic University | Wang R.,Key Laboratory of Advanced Textile Composite Materials | Xu L.,Tianjin Polytechnic University | Tao Q.,Tianjin Polytechnic University
Journal of Materials Science: Materials in Electronics | Year: 2016

Novel multi-walled carbon nanotubes (MWCNTs) and copper phthalocyanine (CuPc) modified conductive silver-plated fiber (MCA-fiber) was successfully prepared via chemical liquid deposition method with polyester as soft template. The structures and morphologies were characterized by X-ray photoelectron spectroscopy and field emission scanning electron microscopy. The binding energy of oxygen and carbon are 543, 296 eV respectively and the SEM images show CuPc and MWCNTs are deposited on the surface of silvered fiber continuously. The MCA-fiber is about 75 μm in diameter. The effect of process conditions on the properties of MCA-fiber was investigated. With the increasing of the concentration of AgNO3, the coating amount and electrical conductivity first increase and then decrease. The decrease of MWCNTs can bring down the electrical conductivity, but can improve the coating amount of materials on the surface of fibers. There is a sharp decrease from 7.20 × 10−4 to 1.33 × 10−4 s/cm when the MWCNT-doping content is 20 %. When the doping ratio of MWCNTs and CuPc is 2:8, the coating amount rises to 19.2 %. The mechanism study on the photovoltaic properties of MCA-fiber verifies that it can be used in fiber-shaped solar cells. © 2015, Springer Science+Business Media New York.


Zhou X.-H.,Tianjin Polytechnic University | Kang W.-M.,Tianjin Polytechnic University | Xu W.,Tianjin Polytechnic University | Cheng B.-W.,Tianjin Polytechnic University | Cheng B.-W.,Key Laboratory of Advanced Textile Composite Materials
RSC Advances | Year: 2015

Flexible hollow CeO2/Al2O3 fibers were successfully prepared, for the first time, by a coaxial electro-blowing spinning technique. The diameter of these fibers could be controlled by adjusting spinning parameters. Upon sintering the as-spun fibers at 600 °C, flexible hollow CeO2/Al2O3 fibers were obtained with continuous morphologies. Their microstructure was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectra (XPS), X-ray diffraction (XRD) and specific surface area (BET). A dye removal experiment was evaluated from the adsorption efficiency of Methyl Orange (MO) in aqueous solution. They exhibited strong adsorption capacity for MO molecules in dark conditions and were easily separated by simple filtration, thus showing promise for application in wastewater treatment and environmental purification. © 2015 The Royal Society of Chemistry.


Liu Y.,Tianjin Polytechnic University | Zhao X.,Tianjin Polytechnic University | Zhao X.,Key Laboratory of Advanced Textile Composite Materials
Fibres and Textiles in Eastern Europe | Year: 2016

In this paper, the influence of fabric structure, weft density, end spacing and yarn fineness on the dielectric constant of polyester woven fabrics was studied. The results show that at low frequencies, the dielectric constant of fabric was clearly affected by the processing parameters; when the organisation of the fabric is plain i.e. the warp density is 140/10 cm, weft density 140/10 cm and yarn linear density 32 tex, the absorbing performance of polyester woven fabrics is at its best. At higher frequencies, the effect of the varying parameters on the dielectric constant of the fabrics can be neglected. Polyester woven fabrics have better EM absorbing properties for these parameters. This study offers a new theoretical basis for the development of EM absorptive fabrics. © 2016, Institute of Biopolymers and Chemical Fibres. All rights reserved.


Han Z.,Tianjin Polytechnic University | Han Z.,Key Laboratory of Advanced Textile Composite Materials | Han X.,Tianjin Polytechnic University | Zhao X.,Tianjin Polytechnic University | And 3 more authors.
Journal of Hazardous Materials | Year: 2016

Iron(II) phthalocyanine was immobilized onto amidoximated polyacrylonitrile fiber to construct a bioinspired catalytic system for oxidizing organic dyes by H2O2 activation. The amidoxime groups greatly helped to anchor Iron(II) phthalocyanine molecules onto the fiber through coordination interaction, which has been confirmed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and UV–vis diffuse reflectance spectroscopy analyses. Electron spin resonance studies indicate that the catalytic process of physically anchored Iron(II) phthalocyanine performed via a hydroxyl radical pathway, while the catalyst bonded Iron(II) phthalocyanine through coordination effect could selectively catalyze the H2O2 decomposition to generate high-valent iron-oxo species. This may result from the amidoxime groups functioning as the axial fifth ligands to favor the heterolytic cleavage of the peroxide [Formula presented] bond. This feature also enables the catalyst to only degrade the dyes adjacent to the catalytic active centers and enhances the efficient utilization of H2O2. In addition, this catalyst could effectively catalyze the mineralization of organic dyes and can be easily recycled without any loss of activity. © 2016 Elsevier B.V.


Xu Y.,Tianjin Polytechnic University | Li X.,Tianjin Polytechnic University | Li X.,Key Laboratory of Advanced Textile Composite Materials | Liu H.,Tianjin Polytechnic University | And 2 more authors.
Journal of Nanomaterials | Year: 2016

A novel method for fabricating ordered double layers porous anodic alumina (DL-PAA) with controllable nanopore size was presented. Highly ordered large pore layer with interpore distance of 480 nm was fabricated in phosphoric acid solution with oxalic acid addition at the potential of 195 V and the small pore layer was fabricated in oxalic acid solution at the potential from 60 to 100 V. Experimental results show that the thickness of large pore layer is linearly correlative with anodizing time, and pore diameter is linearly correlative with pore widening time. When the anodizing potential in oxalic acid solution was adjusted from 60 to 100 V, the small pore layers with continuously tunable interpore distance from 142 to 241 nm and pore density from 1.94 × 10 9 to 4.89 × 10 9 cm-2 were obtained. And the interpore distance and the pore density of small pore layers are closely correlative with the anodizing potential. The fabricated DL-PAA templates can be widely utilized for fabrication of ordered nanomaterials, such as superhydrophobic or gecko-inspired adhesive materials and metal or semiconductor nanowires. © 2016 Yanfang Xu et al.


Liu Y.,Tianjin Polytechnic University | Zhao X.,Tianjin Polytechnic University | Zhao X.,Key Laboratory of Advanced Textile Composite Materials | Xiao T.,Tianjin Polytechnic University
Journal of the Textile Institute | Year: 2016

In this paper, plain woven fabric was selected as the base fabric. Graphite and silicon carbide were the surface layer and underlying layer absorbents, respectively. The influence of the content of the graphite and silicon carbide absorbent and coating thickness on the real part and the imaginary part of the dielectric constant, and the loss tangent are discussed. Through the optimization of electromagnetic parameters, graphite/silicon carbide double-coated polyester woven fabric absorbing materials with the best wave absorption performance were prepared. © 2016 The Textile Institute


Liu Y.,Tianjin Polytechnic University | Zhao X.,Tianjin Polytechnic University | Zhao X.,Key Laboratory of Advanced Textile Composite Materials | Tuo X.,Tianjin Polytechnic University
Journal of the Textile Institute | Year: 2015

The polyester knitted fabric was used as a basilicon carbide structure material. A three-layer composite coating finishing was applied to the structure material using ferrite, silicon carbide, and graphite absorbing materials. The single factor test method was used in this series of research. The impact on dielectric constant and loss tangent of absorbtion of each agent and the coating thickness of each layer were studied. From these results, the three-layer composite coating materials that had excellent absorbing properties were selected and prepared. The results showed that when the ferrite (60 wt%) was used as a bottom layer, the silicon carbide (36 wt%) was used as a middle layer and the graphite (24 wt%) was used as a surface layer with the respective thickness of 0.5, 0.3, and 0.3 mm, an excellent microwave absorbing property was noted for the three-layer composite coating material. In order to meet the requirements for the engineering field, physilicon carbideal and mechanical properties of the microwave absorbing materials were also characterized. © 2015 The Textile Institute


Liu Y.,Tianjin Polytechnic University | Zhao X.,Tianjin Polytechnic University | Zhao X.,Key Laboratory of Advanced Textile Composite Materials | Tuo X.,Tianjin Polytechnic University
Journal of the Textile Institute | Year: 2016

Polypyrrole-coated cotton conductive fabrics were prepared by in situ polymerization. The influences of pyrrole dosage, mole ratio of pyrrole to iron (III) chloride, reaction temperature and reaction time on the conductivity of the polypyrrole-coated cotton conductive fabrics were analyzed. The best method for preparing the polypyrrole-coated cotton conductive fabrics was determined. The structures of the conductive cotton fabrics were characterized with Fourier transform infrared spectroscopy and scanning electron microscopy. The results showed that when mo1e ratio of pyrrole to iron (III) chloride was 2:1, reaction at room temperature for 1 h with a bath ratio of 1:40, the conductivity of the prepared fabric was the best with a surface resistance of 0.15 kΩ/cm. The chemical structure and the surface morphological structures of the conductive cotton fabrics were different from that of the untreated cotton fabrics. By in situ polymerization, the fiber surfaces appeared homogeneously coated with a film of polypyrrole. Importantly, the process of pyrrole polymerization is very simple. This study offers a new simple way for preparing the polypyrrole-coated cotton conductive fabrics effectively. © 2016 The Textile Institute


Yu L.-H.,Tianjin Polytechnic University | Wang R.,Tianjin Polytechnic University | Wang R.,Key Laboratory of Advanced Textile Composite Materials | Xu L.,Tianjin Polytechnic University
Materials Letters | Year: 2016

Hybrid thin films based on multi-walled carbon nanotubes (MWCNTs) and acylamino copper phthalocyanine (AM-CuPc) were prepared with oxygen plasma treatment technology. The effect of doping ratio on the photoelectric property of the films was investigated. The structure and morphology were characterized by Fourier transformed infrared spectrometer (FTIR) and field emission scanning electron microscopy (FESEM). The functional composites exhibited excellent dispersing property and the covalent bonds were formed between MWCNT and AM-CuPc. The UV-vis absorption spectra showed the absorbility was improved. In addition, the band gap was affected by the doping ratio and it was minimum of 1.63 eV when the MWCNT-doping content was 40%. It will supply a new way to synthetize solar energy materials with different band gap. © 2015 Elsevier B.V. All rights reserved.


Li J.,Tianjin Polytechnic University | Li J.,Key Laboratory of Advanced Textile Composite Materials | Liu H.,Tianjin Polytechnic University | Liu H.,Key Laboratory of Advanced Textile Composite Materials | And 3 more authors.
Measurement: Journal of the International Measurement Confederation | Year: 2012

Pressure comfort is an important part of garment comfort evaluation, in this paper, a low cost portable pressure measurement system (PPMS) are developed for measuring pressure distribution on garment. Three sets of different size knitted garments are fabricated for investigating the pressure distribution on a mannequin and on young female volunteers. Experimental results show curvature radius of points on the mannequin are smaller, pressures are larger which is consistent with the pressure calculation equation. Pressure distribution state on human body is different from that on mannequin due to size and shape difference even if the same garments were utilized. Dynamic pressure measurement on human body shows the pressure variations on points of human body. However, the static and dynamic pressure data can be utilized for improving quality of garments and helping design of garments. © 2012 Elsevier Ltd. All rights reserved.

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