Table of Content

15 November 2014, Volume 35 Issue 11

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Stability of polypyrrole/polyester monofilament

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  1-0. 

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In order to enhance polyester monofilament cytocompatibility and to meet the need of artificial hair implantation, PPy/PET monofilaments were prepared by liquid in-situ polymerization. The biostability, thermo stability and wearability were tested. The results showed that PPy/PET filaments had better stability in the papain solution and the improvement of temperature could accelerate the degradation; the content of N elements, tensile strength and breaking elongation decreased with the increase of degradation period caused by PPy spalling and surface structure change. The add of PPy improved thermo stability of PET; and the PPy/PET monofilaments with alkali treatment had better wearability.

Porous structure and air filtration performance of electrospinning PLA fibers

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  6-0. 

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PLA fibers with nanoporous structures both inside and on the surfaces of them were fabricated via electrospinning. The effect of electrospinning parameters such as PLA mass fractions, weight ratios of the mixed solvent dichloromethane(DCM)/N,N-Dimethylacetamida(DMAC), voltage and flow rate on the pore coverage rate and the pore size on the surface of the fibers have been studied. The results show that PLA mass fractions and weight ratios of the mixed solvent DCM/DMAC affect mostly, voltage take the second place while the flow rate have weak influence. The porous PLA fibrous membrane which was prepared with PLA mass fractions of 7 wt%, DCM/DMAC 10:1, voltage 16kV and flow rate 1mL/h had high efficiency and low resistance for air filtration, the filtration efficiency could reach 99.964% when tested by using NaCl aerosol with 75nm volume median diameter and the pressure drop was just about 197.9Pa.

Fabrication and luminescent properties of Y2O3:Eu3+ nanofibers and nanobelts

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  13-0. 

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In this study, two kinds of solvents were respectively selected to dissolve Poly(vinyl pyrrolidone) and rare earth nitrates, then the solutions were used to fabricate two different kinds of one-dimentional nanomaterials by electrospinning followed by calcination process. The structure and morphology of the obtained samples were characterized by thermogravimetric analysis (TG), field emission scanning electron microscopy (FE-SEM), fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The photoluminescence (PL) spectroscopy was employed to study their luminescent properties. The results indicated that Y2O3:Eu3+ nanobelts were obtained by using of de-ionized H2O as the solvent, but the obtained Y2O3:Eu3+ nanofibers with solvent of DMF. Y2O3:Eu3+ samples had crystallized at 800 oC with the cubic phase. Furthermore, the PL emission intensity of Y2O3:Eu3+ nanofibers are about two time higher than those of nanobelts .

Property of hydrophilic PMMA/β-CD nanofibers and its adsorption properties of Cu2+

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  19-0. 

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PMMA/β-CD composite nanofibers were prepared by electrospinning. According to the results of dynamic contact angle measurement, According to the results of dynamic contact angle measurement, when the composite nanofibers mass percentage of β-CD is 30%, the composite nanofibers have remarkably improved.Through static voltage half-life method in composite nanofibers membrane with β-CD content increased its half-life is also reduced, then the electron emission faster, better and better conductive properties, antistatic effect getting better. Heavy metal adsorption capacity of Cu2+with β-CD content increases.

Reverse microemulsion hydrothermal synthesis and photocatalytic properties of anatase TiO2 microspheres

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  23-0. 

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Highly crystalline anatase TiO2 microspheres were prepared by a reverse microemulsion-hydrothermal method using tetrabutyl titanate as the titanium source and Trition X-100 as the surfactant. The phase and crystal structure, surface morphology of the prepared TiO2 microspheres were characterized by X-ray diffraction(XRD), Fourier transform infrared spectrometer(FTIR), Scanning electron microscopy(SEM), transmission electron microscopy(TEM), Photolumincscence (PL) spectra, respctively. The results show, increased the molar ratio TBT/H2O within a certain range, the TiO2 microspheres transformed from the irregularly shape to the regularly structure, Particle size also became uniform. the photocatalytic activity of TiO2 microspheres was evaluated in the degradation of methyl blue, it was found that particle size and morphology changes have a greater impact on the photocatalytic activity, when TBT/H2O molar ratio is 1:25, the size of microsphere is uniform, the photocatalytic activity is the highest, better than commercial P25.

Evenness quality control for worsted pure wool yarn based on quality index number

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  28-0. 

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To effectively control the quality of combed pure yarn evenness, and to comply with the market development trend of varieties of transformation and quality upgrade of wool spinning products, in this article, through analysis, derivation of the theory of spinning technology and experimental demonstration, is derived for the calculation formula of raw material of wool diameter design value, the calculation formula of theoretical sliver evenness coefficient of variation of wool yarn, and the calculation formula used to rapidly determine the ratio of two kinds of wool top. Article is put forward the semi-product evenness quality control process for fore-spinning based on it’ s quality index number, with according to the latest Uster statistical bulletin to forecast and analysis the quality level of the wool yarn evenness, and to make the wool assorting schemes get timely feedback, adjustment and optimization; At the same time, draw lessons from foreign advanced experience, through drawing the sliver evenness quality analyses graph for fore-spinning semi-products to track and analysis the quality data of the sliver evenness, and to make the production technical schemes get timely feedback, adjustment and optimization. Therefore, quality control technology guided by the sliver evenness quality index number can be more scientific and effective to achieve the quality objectives of the combed pure wool yarn.

Raw cotton short fiber index prediction mwdel based on BP veural network

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  35-0. 

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In order to predict short fiber index of raw cotton，a BP neural networks model was designed on the basis of prediction method of the BP neural networks. Based on the raw cotton in southern Xinjiang，taking the seed cotton moisture regain and the rotational speed of saw cylinder as the basic characteristic quantity of BP neural networks models，the correlation between the short fiber index of raw cotton and the input parameters and the BP neural networks prediction model were proposed for prediction of the short fiber content. The results show that the BP neural networks model has strong ability for nonlinear approach which can actually reflect the nonlinear relationship between the short fiber index of raw cotton and main controlling factors. The small errors between the prediction values and measured values were achieved. The R-square of regression function between output and target of neural networks model for testing sample is 0.96357.

Effect of different swirl nozzle airway structures on performance of ring-spun yarn

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  40-0. 

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In order to research the effect of different airway structural of swirl nozzle on reducing yarn hairiness, in this research, we designed and used two groups swirl nozzle with different airway diameter and airway position. The comprehensive performance index of yarn were tested and conducted for comparison with the traditional ring spinning and compact spinning. The results showed that: the swirl nozzle with 1.4mm airway diameter was superior to the other two swirl nozzle which with 1.2mm and 1.6mm airway diameter, and airway position A is better than B and C, For 30tex Z twist yarn，swirl nozzle with 1.4mm airway diameter, and A airway position had the best performance. Under this condition, compared with that of traditional ring spun yarn, the S3 was reduced 74.2%, breaking strength was increased 5.4%; compared with that of compact spun yarn, the S3 was reduced 59.5%, breaking strength was decreased 4.0%. As a result, the effect of swirl nozzle reducing hairiness was remarkable.

Mechanism of part-gelatinization sizing technology on yarns

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  47-0. 

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Part-gelatinization Sizing Technology (PGST) is a novel technology to size yarns by using part-gelatinized starch sizing agents in a medium temperature conditions. In this paper, the microstructure of sizing membrane formed both on the yarn surface and in the cross-section of the sized yarns are examined by using SEM, the mechanism of the formation of sizing membrane on the surface of yarns in PGST are thus proposed. It is found that sizing slurry prepared in PGST contains a certain amount of fully-, or partially-gelatinized starch sizing agents and a greater amount of not gelatinized starch particles; the gelatinized starch sizing pulp has low viscosity is easier to penetrate into voids inside yarns while the not gelatinized starch particles are superabsorbent against water deposited on the surface of the yarn. During drying process, the saturated, not gelatinized starch particles deposited on the surface of the yarn to form sizing membrane jointed with the gelatinized starch inside the yarns. Such a complex membrane structure covered the whole fiber surface within and on the surface of the yarns. Key words part-gelatinization sizing technology (PGST); mechanism of sizing membrane formation; starch sizing materials

Effect of fabric weaves ov light-proofness of double-layer jacquard curtain fabrics

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  52-0. 

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To research the effect of histological structure on the light-proofness, polyester yarn were selected as the materials and three types of fabrics about 25 pieces with double-layer construction were woven. Fabric light-proof was tested and analyzed. This research explores pattern of organization, organization cycle numbers, binding points distribution, backing organization to get the regularity of light-proofness. It concludes as follows. As the binding points on unit area are decreased, the light-proofness is strengthened. With certain fabric density and controlled floats, the relation between organization cycle numbers and average light-proof rate presents a positive correlation. When the number is more than eight, the effects are basically consistent. Regarding the fabrics with same organization cycle numbers, the effects of light-proofness can be arranged as, plain weave < twill weave < satin weave. Besides, the binding points should be evenly distributed to assure the flatness of two layers. Satin weave is the better choice of backing weave.

Study on the plush consolidation fastness of weft cut pile fabric

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  57-0. 

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In order to solve the problem of weft cut pile fabric is easy to removal hair in the process of taking,conducts the research to the plush consolidation fastness of weft cut pile fabric. Based on the force analysis of weft cut pile fabric loop and dehairing process is affected by the selection of suitable raw materials,to improve the plush to overcome resistance with yarns in the process of unhairing.And,from the base cloth density,plush consolidation method,finishing and other aspects of the factors affecting the plush consolidation fastness,then put forward the corresponding measures to improve the plush consolidation fastness in the production.

Fabric defect detection algorithm using local statistic features and global saliency analysis

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  62-0. 

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In order to efficiently detect defect for fabric image with complex texture and variety of defects, this paper proposed a novel defect detection algorithm based on local statistical features and global saliency analysis. In the proposed algorithm, the target image is first divided into blocks with the same size, then the LBP technique is used to extract the texture features of the blocks and the histogram technique is used to extract the grayscale statistical features of the blocks. Second, for a given image block, K blocks are randomly chosen for calculating the LBP feature contrast and grayscale histogram feature contrast between the given block and the randomly-chosen blocks. Based on the obtained global contrast information, a saliency map is produced. Finally, the saliency map is segmented by using an optimal threshold, which is obtained by an iterative approach. Through these procedures, the detection result is obtained. The experimental results demonstrate that the proposed algorithm, integrating the local textual and grayscale statistical features and the global saliency analysis, can detect the fabric defections effectively.

Preparation of waterborne polyurethane modified with fluorinated polysiloxane and its properties

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  68-0. 

Abstract ( 420 )   PDF (1568KB) ( 382 )   Save

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In order to further enhance the water resistance of polyurethane coating agent, waterborne polyurethane modified by fluorinated polysiloxane was synthesized by polyether ( N210 ) and isophorone diisocyanate ( IPDI ) as raw material, hydroxyl terminated fluorinated polysiloxane as modifying agent, dimethylol propionic acid ( DMPA ) as the hydrophilic monomer, and trimethylolpropane ( TMP ) as the chain extender. The effect of the dosage of DMPA, the molecular weight and dosage of modifying agent on the properties of emulsion and its film were discussed, and the modified polyurethane was applied to coat the polyester fabric. The results showed that the stability of the emulsion increased, the particle size of the emulsion decreased, and the hydrophobicity of the film decreased as the dosage of DMPA increased; the stability of the emulsion decreased, the particle size of the emulsion increased, and the hydrophobicity of the film increased as the molecular weight and dosage of modifying agent increased; The performance of waterborne polyurethane achieved the best value when the dosage of DMPA was 5%, the molecular weight of modifying agent was 1694 and its dosage was 6%, the water contact angle of the coated fabric with modified waterborne polyurethane was 138.2°, the hydrostatic pressure of the coated fabric was 644mm. Compared with the unmodified polyurethane, the water resistance of the fabric coated with modified waterborne polyurethane was improved significantly.

Study of dyeing thermodynamics of lac pigment on nylon fiber

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  74-0. 

Abstract ( 358 )   PDF (1028KB) ( 410 )   Save

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In order to investigate the dyeing mechanism of lac pigment on nylon fiber and providing theoretical basis of the dyeing process optimization, the dyeing equilibrium experiments of lac dye on nylon fiber were carried out. Freundlich, Langmuir and Redich-Peterson isotherms were used to simulate the experimental data at 80 and 90℃， some thermodynamics parameters such as dyeing affinity(-Δμ°), enthalpy change(ΔHo) and entropy change(ΔSo) were also evaluated. The results indicated that the adsorption process of lac pigment onto nylon fiber fits Redlich-Peterson model best, and the dyeing process is an exothermal and spontaneous one, the values of enthalpy change (ΔHo) and entropy change (ΔSo) were -55.45kJ/mol and -111.96J/mol respectively. In addition, the dyeing process affinity and adsorption quantity decreased as temperature increased.

Dyeing Kinetics of Sorghum Red Pigment on Nylon

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  79-0. 

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In order to improve the dyeing properties, dye up-taking control, dyeing result prediction and dyeing process optimization of the natural dyes Sorghum Red on nylon, the adsorption kinetic experiments were carried out, and the dyeing mechanism was investigated. Pseudo first-order and pseudo second-order kinetic models were selected to examine the adsorption kinetic date, some dyeing kinetic parameters of Sorghum Red on nylon fabric were studied, and the influence of dyeing of the electrolyte and surfactants were explored. The results indicated that the adsorption kinetics of Sorghum Red on nylon fabrics was found to be described by the pseudo second-order kinetic model. The dyeing rates increased with temperature rising, and the half dyeing time reduced with temperature rising. Dyeing rate and the adsorbed at equilibrium were reduced by electrolyte, and changed by different surfactants.

Dyeing Dynamics of Gardenia blue on Wool Pretreated with Chitosan

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  85-0. 

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Mordant dyeing is the conventional method for the dyeing of gardenia blue on wool because of the low affinity between dyes and wool fiber. However, the usage of mordant dyeing could result in the environmental pollutions easily. Chitosan, which is a natural biodegradable polymer, could be used to pretreat with wool fiber. The dyeing mechanism of gardenia blue on wool fiber pretreated with chitosan was studied by exploring the dyeing rate and kinetic model of dyes on wool fiber. The results indicated that the dyeing rate and dyeing equilibrium adsorption capacity of dyes on chitosan-pretreated wool fiber were higher than that of dyes on untreated wool fiber. In addition, the adsorption process of gardenia blue on both chitosan-pretreated and untreated wool fiber was in accord with the pseudo-second-order dynamic model, indicating that the dyeing of gardenia blue on chitosan-pretreated wool fiber was mainly chemical absorption process.

Effect of disperse dyes on dyeing ethylated wood powder/plystyrene plastic composites

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  89-0. 

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　 Ethylated wood powder/polystyrene plastic composites (WPC) was obtained by compounding ethylated wood powder with polystyrene, then dyeing was carried with disperse dyes under high temperature and high pressure, its color shade, color, washing fade rate and the percentage of the dye were tested after that. Dyeing properties was carried out by infrared spectroscopy (IR) and scanning electron microscopy analysis (SEM). The results show that disperse dyes can be used for the dyeing of WPC, the color shade of dyed WPC was closed to that of dyed polyester fabric. The dyeing rate and washing fastness of the dyed WPC was related to the kinds of disperse dyes, dyeing temperature and dye concentration,et al. When the ethylated wood powder compound with polystyrene, transition pores in the ethylated wood powder were filled with polystyrene, then dyeing with disperse dyes, the surface of WPC become more smooth, which was conducived to the reflection of light and made the dyed WPC more brighter.

The Effects of Sillicone Crosslinking Agent on Properties of Polyacrylate

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  95-0. 

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A sillicone-modified polyacrylate miniemulsion was prepared by sillicone crosslinking agent double terminated acrylamide-propyl polysiloxane (diAAp-PDMS) and acrylate monomers, and the modified miniemulsion were used for pigment printing. The influences of dosage of crosslinking agent diAAp-PDMS on these such as the properties of the modified miniemulsion, the structure and properties of the modified polyacrylate film and the properties of pigment printing were studied. The results showed that: with the increase of the dosage of diAAp-PDMS, the monomer conversion of miniemulsion polymerization became lower, the agglomerate rate became bigger, the particle size of miniemulsion became bigger; the degree of crosslinking of the modified film increased at first and decreased at last, the rich amount of PDMS on the surface of the film increased, the hydrophobicity of the film increased at first and decreased at last, the breaking tenacity of the film became lower, the breaking elongation rate of the film increased, the work of break increased at first and decreased at last; the colour fastness to dry and wet rubbing of the pigment printed fabric increased at first and decreased at last, and the softness of the printed fabric improved. When the dosage of diAAp-PDMS was 8%, the degree of crosslinking of the film was the highest, the hydrophobicity of the film was the strongest, the work of break was the biggest, and the colour fastness to dry and wet rubbing of the pigment printed fabric could reach 4-5 degree, and the handle of the printed fabric was softness.

Isolation and identification of an actinomycete strain DM182 for microbial degumming of hemp

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  102-0. 

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The study was to explore whether the degumming strains exist in soil sample collected from the roots of hemp. The actinomycetes were cultivated on GAUZE’s Medium NO.1. The degumming strains of hemp were screened by the method of transparent zones. The strain was classified by physiological, biochemical and morphological characteristics and 16S rRNA gene sequence analysis. The results showed that a total of 41 actinomyctes were isolated from the samples, of which the strain DM182 was more effective in decomposing the pectin of hemp, and the transparent circle diameter is 3.78cm. According to its morphological, physiological and biochemical characteristics and 16S rDNA sequence analysis, the strain DM182 was preliminary identified as Nocardioides albus. Thus, some members of this genus have a very wide application prospect in agriculture and industry. This is the first report that N. albus strain was isolated in the local region, and our study provided basis for the further exploration of the strain.

The Application and Its Mechanism of Hydrotalcite Flame Retardant Agent

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  107-0. 

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The hydrotalcite-PU flame retardant agent was prepared by compositing hydrotalcite into waterborne PU, then applied on the polyester fabrics. The mechanism of flame retardant and moisture permeability were studied through the hydrotalcite structures, which characterized by X-ray diffraction (XRD) and infrared spectroscopy (FT-IR); and the performance of the coated fabric, which tested by thermogravimetry (TG) and scanning electron microscope (SEM)) and so on. The results show that the combustion of coated fabric is retarded because the hydrotalcite plays a multi-role of an endothermic and cooling process, then gas phase diluted, at last forming heat insulation layer on the fabric surface during the burning process. And the moisture permeability is improved because the hydrophilic group in hydrotalcite.

Sericin coated finishing of cotton fabric and its properties

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  112-0. 

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In order to develop high quality and functional cotton product, sericin with negative charge and chitosan derivative with positively charged were reacted to form a new micro particles with viscose effect in aqueous solution, sericin was further fixed on cotton fabric by polyacrylic acid crosslinking agent reacted at low temperature. The wearability, surface morphology and structure and others were tested of cotton fabrics before and after sericin coated finishing. The results showed that the sericin was successfully coated uniformly on the surface of cotton fabric, and good washing durability. The dissolve loss rate of sericin coated fabric is about 0.21% after five washing cycles.The moisture absorption, thermal insulation, moisture permeability and biocidal property of sericin coated cotton fabric increased, but the air permeability almost did not change .The sericin coated cotton fabric was a new kind of top grade cotton products.

Research and characterization of water and oil repellent finishing auto interior materials

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  118-0. 

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The treatment of resist water and oil by low-temperature plasma technology for recycled polyester fiber (PET) automotive interior carpet was studied. The best process conditions were optimized: low-temperature plasma processing power was 150W, dealing with vacuum was 30Pa，processing time 10 min, C8H2F17NO2S monomer concentration was 15%.The performance testing and analysis for the after finishing PET interior carpet using the optimum process through contact angle measurement instrument, scanning electron microscopy and infrared spectroscopy.The result showed: there was cross-linked esterification between C8H2F17NO2S monomer and PET molecules,fiber surface had some C-F groups with low surface energy. Namely, C8H2F17NO2S monomer was effectively grafted onto the surface of PET fiber, sequentially,the automotive interior carpet had a better effect to resist water and oil.

Implementation of Cascade Control in Textile Fiber Drying

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  135-0. 

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The traditional drying method needs long time and much energy. In order to enhance the stoving efficiency and reduce the system’s nonlinear hysteresis interference factors, according to the textile fiber drying process characteristics, the author puts forward a stoving method based on cascade control system, and make comparisons between the traditional PID and cascade control PID by Simulink. The experiment results show that cascade control has a large increase in response time, less overshoot, and other factors than single loop PID. Realized the optimization control and improve the testing efficiency and accuracy.

The Key Technology of Developing Warp Knitting Machine with Multi-guide Bars

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  139-0. 

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In this paper the key technology about the motions of the looping elements in a warp knitting machine with multi-guide bars is intensively studied. The process of the loop-forming, moving requirements of the looping elements are analyzed, and the structures of the mechanisms which meet the moving requirements are synthesized. The time ratio of the oscillation of the bars, the dynamics optimization of the cam mechanisms that drive looping elements, and the phase angles of different looping elements mechanisms are the key technologies when developing a warp knitting machine with multi-guide bars. These three key technologies mentioned above are also given a highly emphases on in the paper, and they act as the theory basis in the development of a high-performance warp knitting machine with multi-guide bars. The production application experiences show that these key technologies have tremendous impact on the product technology performance.

Hardware and software design of control system in high speed flat knitter based on ARM9 and double CPLD

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  146. 

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Study on cognition of grid patterns based on consumer's sensibility demand

JOURNAL OF TEXTILE RESEARCH. 2014, 35(11):  151-0. 

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In order to accurately grasp the plaid design positioning This paper selected 50 grid pattern images and 6 representative evaluation lexicon Completed the study about sensibility demand for grid pattern by the computer software E-Prime that was often used in Psychology. That was had conducted an investigation by experts in order to analyze Characteristics of the high recognition 22 lattice images by the Semantic Differential method to analyze characteristic of check pattern color swatch area, line thickness, color contrast, etc. and drew Different the distribution of quadrants for color area and thickness , color area and Color contrast, And then quantitatively reflects the relationship between consumer perceptual requirement and characteristic of the grid patterns. To provide the basis In order to design the Lattice products that meet consumer emotional demand