Table of Content

15 March 2012, Volume 33 Issue 3

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Effect of pressure on shear viscosity of poly(ethylene terephthalate) melt

ZHANG Bin, LI Jian, AN Shu-Lin, LI Xin

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  1-4. 

Abstract ( 1117 )   PDF (802KB) ( 506 )   Save

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The variation of the shear viscosity og poly (ethylene terephthalate) (PET) mslt was investigated using the capillary rheometer and counter pressure chamber when the pressure at the outlet of capillary was higher than normal pressure, and it was observed that the shear viscosity of PET was dependent on the average capillary pressureand shear rate, respectively. The results show that when shear rate is fixed constant, the shear viscosity of PET increases with the increase of average capillary pressure, but the increase margin varies with shear rate. The effect of pressure is more prominent at low shear rate. When the average capillary is fixed constant, the shear viscosity of PET decreases with the increase of shear rate, as it is shown by less shearing. It was found by computation that the pressure coefficient of PET at  290℃ was about 11.94GPa^-1 when shear rate is fixed constant.

Preparation of Cd²⁺-PVA/PA6 metal chelated nanofibers and analysis of reaction kinetics

FENG Quan, WANG Qing-Qing, WEI Qu-Fu, WANG Xue-Qian, HOU Da-Yin

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  5-8. 

Abstract ( 892 )   PDF (863KB) ( 373 )   Save

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PVA/PA6 composite nanofibers were formed by electrospinning and the reacted with Cd²⁺ solution to prepare Cd²⁺ -PVA/PA6 metal chelated nanofibers. The metal ions (Cd²⁺) concentration was determined by atomic absorption spectrophotometer (AAS); the morphologies were characterized by scanning electronic microscopy (SEM); and the major absorption peaks were assigned by means of Fourier transform infrared (FT-IR) spectrography. The result shows that PVA/PA6 composite nanofibers have excellent adsorption capacity for metals ions such as Cd²⁺ and good shape stability.  The absorption  process and kinetics parameters of metal ions were also studied in this work. The saturated amounts of coordinated Cd²⁺ (Qm) was 4.4643 mmol/g (dry fiber),  the adsorption constant (K_l) was 0.0257 L/mmol ,and the correlation coefficient R²=0.997. The process of reaction was corresponding with Langmuir model.

Rheological behavior of Konjac Glucomannan/Attapulgite blending solution

YU Jin-Chao, PENG Zhi-Qin, HU Guo-Liang, MEI Yun-Yun, YU Jie-Jie

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  9-13. 

Abstract ( 932 )   PDF (1165KB) ( 405 )   Save

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Konjac glucomannan（KGM）was modified by blending with attapulgite (AT). The effect of different AT loadings on the rheological properties of the blend solutions at 20℃ has been investigated by dynamic rheological test. The results show that the complex viscosity, storage modulus as well as loss modulus of the blending solutions are lowered than those of pure KGM solution in most cases. The individual AT nano-rod can rotate freely, which results in the orientation of KGM molecules at low AT content and the more liquid-like behavior of the blend solutions; while AT at high content confines the motion of KGM molecules, leading to the solid-like behavior of the blend solutions due to the steric confinement effect. Besides, it has been found that local percolation network structure might be formed in the case of the 2% mass ratio of AT/KGM. With the increase of AT loading, the blend solutions are seemed to be less frequency dependent compared with pure KGM solution but more heterogeneous in internal structure.

Direct Melt Polycondensation and Characterization of Polylactic

CHEN You-Ning, ZHANG Zhi-Xia

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  14-17. 

Abstract ( 906 )   PDF (820KB) ( 537 )   Save

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Polylactic acid modified by ethylene glycol was synthesized via melt polycondensation by using lactic acid (LA)and ethylene glycol (EG) as starting monomer material directly and characterized with intrinsic viscosity, FT-IR and DSC. The influences of different synthetic conditions including kinds and quantity of catalyst, time and temperature of melt copolycondensation, and different molar feed ratio were discussed in detail. Under the conditions of molar feed ratio of EG to LA 3∶100,amount of catalyst Sn(Otc)2 0.5(wt)%, polymerization temperature 170℃ and pressure 0.095MPa, polymerization time 8h the maximum of the as-prepared polymer was 16374, degradation performance of the products were improved, and maintained good water affinity performance. With the increase of the molar feed ratio of EG, its intrinsic viscosity, and glass-transition temperature decreased gradually.

The effects of the texturing entropy change on the bending stiffness of textured yarn

JIANG Yan, JIANG Li, WANG Shan-Yuan

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  18-21. 

Abstract ( 835 )   PDF (852KB) ( 442 )   Save

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During the course of texturing, the entropy of the filaments structure system was increased. Corresponding changes in its bending stiffness always occurred with this phenomenon at the same time. To quantitative analyze the relationship between the entropy changing and stiffness changes of a linear model during texturing, cantilever measuring was used to measure the bending rigidity of the textured yarns while the EIB to test their diameter and then the relative entropy value were told. The results showed that air-texturing could rise the relative entropy value from 0.3 to 1.45 while the disordering degree 1.28 to 4.25; further differential shrinking would increase the relative entropy value to 1.65, as well the disordering degree to 5.00 and so on. The increasing disordering degree of the filaments’ fragments led to the forming and enlarging of the disordering structure and entanglement structure, which was shown by the rapid rising of bending stiffness and worse handle of ATY; by multi-texturing the entanglement structure might be adjusted and lower bending stiffness might be then.

The fiber diameter prediction model and optimization of PVDF electrospun lithium separators

JIA Qing-Long, JIAO Xiao-Ning, WANG Zhong-Zhong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  22-26. 

Abstract ( 1168 )   PDF (1003KB) ( 420 )   Save

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The porosity affect the liquid absorption and ion conduction properties of membrane, thus affecting the performance of lithium-ion battery.As the fiber diameter significantly affect the porosity of membrane,in this research the fiber diameter of electrospun PVDF membrane in lithium cells measured and the test sample designed by the BBD of RSM , a Quadratic multiple regression model got .The R-Squared(0.9466) and Adeq Precision(13.095) illustrated the model fitted the sample very well , small fluctuations between predicted and actual values also said the same result . Under taking analysis of variance and significance test of the model found that acetone mixed ratio, concentration, interaction of mixing ratio and concentration of acetone , interaction of concentration and electric field strength were significant influencing factors .The porosity of the sample Tested by bubble point method and found that fiber diameter of about 100nm in higher porosity and uniform, and as a solution results, obtained a set of optimal parameters: acetone mixed ratio 15.36% , concentration was 18.38%, electric field strength 1.49KV/cm, predicted diameter of 117nm.

The Preparation and Property Characterization of the Composite Scaffold Fabricated With Silk Fibroin and Calcium Carbonate

HOU Chun-Chun, TAO Si-Jie, ZHU Yong, XU Shui

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  27-33. 

Abstract ( 953 )   PDF (1373KB) ( 382 )   Save

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In order to develop a composite material comply with the mechanical properties and internal structure of artificial bone requirements, silk fibroin and homemade calcium carbonate powder were used as raw materials to prepare composite scaffolds by freeze-drying method. Meanwhile, composite scaffolds’ physical and chemical properties were tested. Experimental results show that: Each samples’ cross-sectional sample are porous shape, aperture between 20-300μm, microporous exists between holes for mutual connection. Porosity is between 43%-76%. Mechanical properties test results show that composite scaffolds’ elastic modulus is between 23-1802 MPa, compression strength is between 8-41M Pa. FTIR spectra show that there are peaks offset, weaken and disappear, hence infer certain composite occur between silk and calcium carbonate. DSC tests show that, calcium carbonate particles have promoted the conformational changes of silk fibroin from random coil to β-folding conformation, and improved the crystallinity .

Ananlysis of Fiber Length irregularity in Stretch-Breaking Process

WU Sui-Ju, YU Chong-Wen, JI Xiao-Lei

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  34-37. 

Abstract ( 780 )   PDF (749KB) ( 472 )   Save

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The relationship between main stretch-breaking technology parameters (stretch-breaking settings and ratio) and fiber length irregularity in stretch-breaking sliver was constructed by analyzing the fiber motion in stretch-breaking process. The relationship between input fiber length and stretch-breaking settings affects fiber length irregularity distinct and stretch-breaking ratio has a very small influence to length irregularity. These conclusions reveal inner regulation between main stretch-breaking technology parameters and fiber length irregularity, and it is profoundly instructive to the practice and study of stretch-breaking technique.

The application of the principal component analysis for the test data of linen yarns with Uster

GUO Jin, DONG Suo-Zhuai, ZHOU Wen-Long

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  38-43. 

Abstract ( 836 )   PDF (1161KB) ( 298 )   Save

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The test data of linen yarns with Uster was analyzed by principal component analysis method and compared with the test data by the seriplane. It was shown that it can make a satisfied linearization for the test data of linen yarn with Uster, and was well in accordance with the results tested by seriplane. Though this method, it also can analyze the linen yarn very qualitatively and quantitatively. The study indicated that, it is very possible to use the principal component analysis in analysis and quality control of linen yarns with the Uster test data. The data also indicated that，the seriplane test will be replaced by the Uster test after constructing a standard database.

The Shape Retention Law of Fabric under Bound States

ZHANG Cai-Qian, WANG Chun-Yan, LIU Cheng-Xia

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  44-47. 

Abstract ( 1074 )   PDF (764KB) ( 364 )   Save

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In order to evaluate the shape retention law of fabric under actual dressing states, a new type shape retention testing method of fabric is designed. The fabric is clingy to cylindroid under a certain pressure for 16 hours, then the pressure is unloaded and the standing time of fabric is 5 minutes. shape retention of fabric is evaluated with image. As for the shape retention law of fabrics, The shape retention performance of 45 pieces fabric were tested and analysed. The conclusion showes that the fabric with a higher density is the worse shape retention performances; The fabric structure takes secondary effect to shape retention performances, the shape retention performances of satin fabric is best, the tabby fabric is worst, and the twill fabric is placed in the middle.

The structure and tensile properties of 2D braided cored rope

ZHAO Qian-Juan, JIAO Ya-Nan

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  48-52. 

Abstract ( 935 )   PDF (1029KB) ( 458 )   Save

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Two-dimensional braided structure cored rope was tailored to conquer the problem of higher strength and modulus ropes used on large net-shape deployable Antennas. Shimadzu universal testing machine was used to test the tensile strength of the samples with different braiding parameters, and the tensile fracture mechanism and failure mode was analyzed. The results showed that the structure rope was stable and the utilization of fiber strength was much higher. Rope was a high strength, high modulus, and low elongation. Braiding parameters had great impact on the rope of strength and breaking elongation. Braiding angle of braiding yarn determined the core yarn wrapped tightly. The greater proportion of core yarn fibers was, the more obvious advantages of the core structure was. In the tensile test process, the core yarn was the main load-bearing, braiding yarns played a role of binding and protection the core yarn.

Design of Warp Knitted Multi-axial Grid Fabrics for Reinforcing Cement

MIAO Xu-Hong, YE Qing, GU Hong-Mei, FENG Li-Jun

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  53-57. 

Abstract ( 950 )   PDF (1138KB) ( 452 )   Save

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In order to engineering Warp Knitted Multi-axial Grid Fabrics, the paper analyzes the configuration characteristic of warp-knitted multi-axial grid fabrics as reinforcement used in cement based composite. Reinforcing cement materials as a starting point, Based on the size of grid and mechanical properties, it explains the selection of reinforcing yarn, the direction and layout mode of yarns and the bonding construction in details. It also gives the computational methods for calculating the gauge of yarns and areal density of fabric. Finally, a quadric-axial warp knitted grid fabric which has been designed and produced is demonstrated and tested. It’s proved that it is possible to design the multi-axial grid fabric to meet with the requirement of reinforced cement based composite in practice.

Preparation and Characterization of Iso-tridecanol Polyoxyethylene Ether Phosphate

WANG Zong-Qian, LI Chang-Long, YANG Qing

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  58-62. 

Abstract ( 1635 )   PDF (963KB) ( 440 )   Save

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Iso-tridecanol polyoxyethylene ether phosphate was synthesized in this text by phosphorylation using phosphorus pentoxide. The effects of proportions of raw material, time and temperature of esterification, modes and hydrolyze time on the alkali permeability of iso-tridecanol polyoxyethylene ether phosphate were discussed. The results revealed the proportion of monoester to disaster was important factor to the alkali permeability of iso-tridecanol polyoxyethylene ether phosphate, and along with the proportion is bigger, the better performance of alkali permeability. The optimum synthesis process was acquired as following: the ratio of n(AEO)∶n(P2O5)=3∶1, esterifying at 90℃ for 4 h, and add given volume of water at 90℃ for hydrolyzing 3h. This synthesis process offered the best alkali permeability of iso-tridecanol polyoxyethylene ether phosphate. In addition, the iso-tridecanol polyoxyethylene ether phosphate has been tested and characterization by FTIR, HPLC methods in order to discuss the ether esterification mechanism.

Strcture of Polylactic Acid Fibre and Adsorption Properties of Disperse Dyes

QIAN Hong-Fei

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  63-66. 

Abstract ( 931 )   PDF (777KB) ( 424 )   Save

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Utilizing the techniques of Comprehensive thermal analysis and X-Ray diffraction, the thermal stability and microstructure for staple and filament of polylactic acid fibre were analyzed. The results showed that these two type of fibres have the same crystalline structure and stablity, but the staple have the higher crystallinity and melting point than filaments. The paper further measured the adsorption isotherm of C.I. Dispeses red 145 and C.I. Disperse orange 61 on the two type of fibres respectively. It was found that the adorption followed the Nernst model. the filament exhibit a stronger ability to adsorb disperse dyes, particularly for C.I. Disperse orange 64, its partition ecofficient and saturation was higher than that of staple by one time. It can be concluded that the difference in adsorption caused by the microstructure varied with the type of disperse dye. In the case of same crystalline pattern of fibre molecules, the crystal size, crystal perfection have impacts on adsorption of disperse dyes besides the main factor of the crystallinity in fibre malecules.

Study on the Adsorption and Degradation Azo-dye

LIU Gui-Ping, WANG Lu-Ping, WANG Jin, LIU Chang-Feng

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  67-73. 

Abstract ( 814 )   PDF (1396KB) ( 450 )   Save

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The adsorption and degradation of azo dyes by mycelium pellets7 were studied in open system, including the conditions such as the cultivation time of mycelium, the dosage of carbon and nitrogen, the dosage of mycelium , the time of adsorption and degradation and the reusing of mycelium. The results showed that the mycelium cultivated for 36h could grow, adsorb and degrade dyes in the conditions of glucose 2.5g/L, NaNO30.5 g/L, KH2PO4 1.0g/L, MgSO4 0.5g/L. The ultraviolet and experimental observations of inoculum of the dyes after dealt with mycelium pellets7 showed that the removing of acid purple by mycelium pellets7 was with degradation and the removing of reactive brilliant red dyes by mycelium pellets7 was with adsorption. In open system, the mycelium put up better growth vigor, ballability, resue and repellency for contaminating microorganism.

Application of a water insoluble vinyl phospate onto silk fabric

GUAN Jin-Ping, CHEN Guo-Qiang

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  74-77. 

Abstract ( 688 )   PDF (870KB) ( 398 )   Save

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The paper dealed with the application of a self-prepared water insoluble flame retrardant diethyl-2-(methacryloyloxyethyl)phosphate(DEMEP) onto silk fabric. Emulsification of DEMEP, the stability and the size distribtion of the DEMEP emulsion were investigated. Adding 10% ~15%(Mass percentage of DEMEP) mixture emulsifier contained Tween 80 and Span 80 at the mass ratio of 2 to 1 can acquire translucent emulsion with good thermal and quiescence stability. DEMEP emulsion was applied to be grafted onto silk fabric, the removal of DEMEP homopolymer on silk fabric with different solvents were explored, and the result showed that acetone and methanol are good solvens for DEMEP homopolymer after 4 to 6 h treatment. The whiteness and permeability of DEMEP grafted silk fabric decreased with increasing graft yield. Micro-scale combustion calorimetry tested combustion behaviour of DEMEP treated silk fabric at milligram level, and the result showed that the heat release rate and total heat release have significant decrease compared with control silk fabric. The test results showed after treated with DEMEP, silk fabric can acquire good flame retardancy property.

Preparation and properties of nano-negative ion automatic interior fabric

XING Tie-Ling, XU Xia, SHENG Jia-Yong, CHEN Guo-Qiang, MA Yue-Juan, ZHANG Jian-Fu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  78-82. 

Abstract ( 914 )   PDF (1219KB) ( 408 )   Save

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The self-made nano-negative ion finishing agent was treated on the fabric by pad-dry-cure process. The effects of finishing agent concentration, dipping time, curing temperature and time on the negative ion concentration released from the fabric were discussed. The optimum finishing technique was obtained: 30g/L of negative ion finishing agent, dipping time 10 min, curing temperature 160 ℃, curing time 1 min. The fabric finished by nano-negative ion finishing agent could release high concentration of negative ion. The water proofing and oil proofing properties of finished fabrics were increased, which had positive significance for the practical application of automatic interior fabrics. The negative ion concentration increased with the repeating vibration of the fabric. The negative ion concentration released from the 900 000 times of vibration of fabric reached 5610 pc/ cm3, which provided experimental basis for the constant negative ion concentration releasing from the nano-negative ion automatic interior fabric during long period.

The component analysis of unearthed concreted silk of Baoen temple in Nanjing and uncover agent simulated protection study

CAO Xiao-Ye, ZHOU Yang, ZHAO Feng, HUANG Dun, QIN Dong-Yi, PENG Zhi-Qin, HU Zhi-Wen, MA Qing-Lin

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  83-88. 

Abstract ( 758 )   PDF (1187KB) ( 544 )   Save

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Abstract In order to uncover the unearthed concreted silk, we analyzed the main concreted materials, and developed a kind of uncover agent which was specific to the silk unearthed in Baoen temple of Nanjing. Uncovering tests were performed at a temperature of 30℃, a relative humidity of 70%, and 10 min after spraying the uncover agent. The structure and properties of the concreted silk were measured before and after spraying the uncover agent. The results show that the breaking strength, elongation at break, chromatic aberration, infra-red spectrogram, thermal behavior and amino-acid content of the concreted silk have no obvious changes, with the concretion force decreasing a lot in the case of uncovering test at the assisting of the developed uncover agent. This shows that the developed uncover agent can be applied in the unearthed concreted silk.’

The Study on the Ink-jet Printing Process of the Silk Fabric

GUAN Fang-Lan, WANG Jian-Ming, YAN Cai-Yan

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  89-92. 

Abstract ( 667 )   PDF (765KB) ( 515 )   Save

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Study on desorption properties of cotton textile for oil dirt

YANG Li-Qiang, ZHANG Shu-Zhi, SU Gao-Feng, LIU Xue-Min

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  93-97. 

Abstract ( 840 )   PDF (1015KB) ( 384 )   Save

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We had a research on desorption process of cotton textile for castor oil , lecithin, liquid paraffin, lanolin,compared with Arabic gum.In certain conditions,secondary reaction kinetics equation was used fitting desorption curves , the correlation coefficient were close to 1. Results showed that: Arabic gum had the biggest desorption quantity and the fastest desorption rates . On the contrary ,lanolin had the smallest desorption quantity,but it had the faster desorption rates than other dirts . Through the SEM surface observations, , Arabic gum on fibers had almost no residual after washing; Lanolin slightly changed before and after washing, castor oil was nither easy absorptive nor easy remove; Lecithin, liquid paraffin, castor oil all had certain degree of residual after washing, some dirts adhered to the fiber surface. Binding energy was different between Stains and the surface of cotton fibers

Study on Rapid Determination of Formaldehyde in Textiles

HUANG Hui-Ling, WANG Yu-Jian, CHEN Xiao-Lan, HUANG Hai-Min, HE Zhi-Gui

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  98-101. 

Abstract ( 1384 )   PDF (744KB) ( 424 )   Save

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A method for photometric determination of formaldehyde in textiles by using m-trihydroxybenzene was studied. By comparing the color of illustrative plates given, one can tell if the amount of formaldehyde in textiles is up to the standard or not easily .The interference color caused by textiles depigmentation in immersion liquid were cleaned up with a column of Supelclean Envl-carb. It keeps good Linearity between absorbancy and concentration of formaldehyde in the range of 0.5～30 mg/kg (r= 0.9991) and proves to be rapid , accurate , practical for the site determination , preliminary screening of large amount of samples or the reinspection of positive samples in the lab.

The Workmanship of Modern Folk Side Opening Coat in Jiangnan Area

CHEN Dao-Ling, ZHANG Jing-Qiong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  102-107. 

Abstract ( 3402 )   PDF (1236KB) ( 625 )   Save

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This article aims to carry out research and analysis the workmanship of modern folk side opening coat in jiangnan area. Through visiting the masters who use the traditional ways to make folk coats in jiangnan area,the record and analysis and research the material to make modern folk side opening coat which include fabric,lining,stuffing,paste,thread and so on; and cutting techniques include cutting body,sleeves,collar, side opening ,cutting under fly, facing and button material and sewing technique include, sew up sleeve seam,starched,sewing,cutting linning,fill stuffing ,self collar,sew button and bar tack at slit , record, demobilization, analysis and research and part of these process have been illustrated by diagrams ; Jiangnan region people taste is unique and skilful production process, fully reflect the local people high demand for the comfort of wearing and craftsmen intelligence.

The Implication Investigation into Chinese Traditional Festival Costume’s color

MI Qi, LIANG Yong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  108-112. 

Abstract ( 1197 )   PDF (1314KB) ( 611 )   Save

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As an important feature of the holidays, the festival costume’s colors reflect the spirit of the nation; it is also one of the festival important symbols. In the meantime, Chinese people represent their appreciation to festival, the ideal and belief of praying for a better life by the national costume’s color decoration. The impact and contact of Chinese culture and heterogeneous culture bring the colorful and gorgeous color application, at the same time, and Chinese textile technology’s development and national culture’s splendid achieve the Chinese national costume’s verve and mien, and contribute to the appropriate relation between the Chinese traditional festivals and clothing. In modern festivals, in addition to eating cultural and sacrifice activities, the costume should present the modern Chinese positive time and spirit, the traditional festivals’ trademark, nationality, transmission, compatibility and fashion.

Research on characteristics and inheritance of QiLu folk blue printed cloth

LI Xue-Wei

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  113-118. 

Abstract ( 1148 )   PDF (1403KB) ( 449 )   Save

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This paper study on historical vicissitude, craft and esthetic emotion of QiLu folk blue cloth and research on its cultural inheritance and development. Through the practical investigation of Qilu and meta-analysis of relevant folk literature, QiLu folk blue cloth, as a form of culture, has much difference from modern industrial blue cloth because of its specific nature, form, function, the formation and the materials. In order to promote inheritance and development, deepen ceaselessly the understanding of Qilu folk culture, innovate ideology of development, treat properly the relationship between tradition and modernity, expand its applications and improve QiLu folk blue cloth diversification development, the study has important significance.

Study on the standard curve of the lower leg cross section at top part of men’s socks

QIN Rui, FAN Xue-Rong, CHEN Dong-Sheng

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  119-123. 

Abstract ( 811 )   PDF (966KB) ( 557 )   Save

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The standard curve of the lower leg cross section which located at the top part of men’s socks is critical for optimal design of sock products. In this paper, 6cm above the medial side of ankle bone was scanned and the right leg cross section images could be intercepted using the software. All lower leg cross-section curve images were stored and each 5 degree interval was segmented in a plane rectangular coordinate system. Using Matlab software, a 72-point coordinate value was determined, average x values and y values of the 72 points coordinate, an average shape of the cross-section was obtained. The quadratic equation of standard curve of the lower leg cross section can be obtained using fitting curves by SPSS software, the building of equations provided basic data for mathematical model of pressure. Meanwhile, we calculated the perimeter of the standard curve, these solutions supply a theoretical reference for optimal design the initial girth of top part of men’s socks and the selection of fabric elastic elongation.

Numerical Analysis of 3D Air Flow in Rotor Spinning Channel

WU Chuan-Yu, YANG Xi-Wei, CHEN Hong-Li, HU Xu-Dong, XU Shi-Fu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  124-128. 

Abstract ( 771 )   PDF (980KB) ( 282 )   Save

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To further learn the mechanism of yarn formation of rotor spinning, the air flow field in spinning channel should be analyzed. The air flow field in spinning channel was studied by FLUENT and the simulation results reveal the airflow characteristics in rotor spinning channel as: there is negative pressure in the rotor and the value existed in the exit of fiber pipeline is the minimum; great pressure is focused on the accumulation groove near the exit of fiber pipeline, arousing the unbalanced force on the rotor; the airflow speed in the exit of fiber pipeline is faster than others, and after entering rotor the vortex is produced and the speed decreases gradually along the rotor; the airflow along the rotor flows towards the exit of rotor after about 90 degrees rotation and the trend of backflow is generalized; when the degrees of the slip plane are more than 27, the airflow characteristic alters negatively, which proves that the degrees of the slip plane should not be designed to be over or equal to 27.

A Decoupling method solving in the conceptual design of textile machinery

XU Juan, HAN Jiang-Hong, ZHU Ming, BI Xiang, LIU Zheng-Yu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  129-134. 

Abstract ( 852 )   PDF (1192KB) ( 300 )   Save

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Textile Machinery has many features as strong processibility, complex structure and many parts and so on. Conceptual design of textile machinery design, will inevitably encounter the coupling design problem. So a transforming bridge in extension theory was introduced to clear up the coupling problem. A decoupling method combining the fault tree analysis with extension theory was proposed. The formal description was made on coupled nuclear issue which was confirmed by the fault tree analysis. Hereby decoupling model and decoupling process of axiomatic design based on the conversion bridge was constructed. An example of vibration andtwisting winding system verifies the validity and feasibility of the method.

The regression analysis of the relationship between the clean production and the discharge variables of polluted water in textile industry

SUN Ling, YANG Xue, CHEN Han-Jun

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  135-138. 

Abstract ( 917 )   PDF (822KB) ( 340 )   Save

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It is proved that the clean production which has made the pollutant discharge under control from the original stage and manufacturing process, can not only cut down the cost generated at the terminal disposal phrase but also benefit to our environment. From economic and social standpoints, it is a “two-win” outcome. In this essay, by analyzing the relationship between the investment of the textile capital asserts and the discharge variables of polluted water in the use of the regression analysis theory, we have undertaken the experiment and finally got the conclusion that clean production plays an important role for the textile industry in cutting down pollution and winning a “two-win” outcome .

Research on Distribution Model of Clothing Timeliness And Algorithm of Modified Ant Colony

HUA Quan-Ping, WANG Xin

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  139-144. 

Abstract ( 1046 )   PDF (1178KB) ( 326 )   Save

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According to the features of clothing distribution timeliness, the clothing timelines fuzzy math formula is built.With the formula and clothing Vehicle Routing Problem,the timeliness clothing model is discussed. On the basis of the model,to analysis Ant Colony Algorithm,Modified Ant Colony Algorithm is studied,which is for the timeliness clothing model.The optimal nature of the MACA is that task weights with the clothing timelines have right to update the information function of clothing Vehicle Routing.The results indicate that,comparing to the existing Ant Colony Algorithm,the MACA proposed by the paper can enhance the ability to find the soultion of the clothing VRP with timeliness.The feasibility and rationality of the models and the algorithm are verified by practical examples.

Research progress of heat stress of firefighters wearing firefighting protective clothing

ZHAO Meng-Meng, LI Jun, WANG Yun-Yi

JOURNAL OF TEXTILE RESEARCH. 2012, 33(3):  145-150. 

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Abstract Firefighter protective clothing brings heat stress to firefighters while it meets the high standard of protection. Compared with its protective performance, its heat stress is a new research task. Heat stress of firefighters is reviewed in the article. The definition of heat stress is introduced and its influence on human ergonomics, thermal and humid comfort and physiology are analysed. The normally used strategies of combating heat stress in firefighting protective clothing are reviewed also. Finally, new strategies based on human body heat transfer, new materials and clothing configuration design are proposed to combat heat stress and improve work efficiency.