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Table of Content

    15 January 2016, Volume 37 Issue 01
    • Condensed state structure and properties of polyether block amide hollow fiber for invasive medical devices
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  1-5. 
      Abstract ( 393 )   PDF (1202KB) ( 608 )   Save
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      The polyether block amide hollow fiber is widely used in Invasive Medical Devises, however, the adjusting of its mechanical properties and microstructure is still a challenge. In this paper, the effects of extrusion speed on structure and properties of Polyether Block Amide medical hollow fibers were studied by tensile test, XRD, AFM and DMA. The results shown that the struc-ture and properties of polyether block amide hollow fibers can be adjusted by process.

      Preparation of silk fibroin modified polyacrylonitrile fiber by coating method
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  6-10. 
      Abstract ( 236 )   PDF (1250KB) ( 361 )   Save
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      To improve the hygroscopicity of polyacrylonitrile fiber, dissolving-coating method was used to prepare the molified polyacrylonitrile fibers were prepared by silk fibroin with co-solvent coating method. It was discussed that the effect of fibroin percent, coating time on the dyeing rate and moisture regain of coating modified fiber. The structure changing before and after fiber coating modification was analyzed by FTIR spectroscopy, SEM and XRD test. The result showed: in a certain range, the dyeing rate and moisture regain increased with the fibroin percent and coating time increased; After modified, the surface of polyacrylonitrile fiber become rough and silk fibroin deposited. The macromolecular structure of polymer, however,  has no changed.

      Preparation and characterization of lauric acid cellulose ester and its film properties
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  11-15. 
      Abstract ( 344 )   PDF (1423KB) ( 280 )   Save
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      One kind of long-chain fatty acid cellulose ester of lauric acid cellulose esters (LACE) were prepared with lauroylchloride as acylating agent and4-Dimethylaminopyridine as catalyst in cellulose/[Bmim]Cl(1-butyl-3–methylimidazolium chloride) homogenous solution system via acylation method. The structure and thermal properties of the obtained LACE were characterized by means of FTIR, 1HNMR, XRD, TG, etc. The esterification conditions that affect substitution degree of products were investigated in detail. And the LACE film was also prepared via delay flow method using LACE membrane solution which were prepared by making LACE with different substitution degree dissolved in CHCl3.At the same time, the film properties were studied by investigating the relationship between the preparation conditions and mechanical properties of LACE film,scanning electron microscopy (SEM) was also used to characterize the film properties.The results showed that the LACE with higher degree of substitution(DS) could be prepared when the esterification carried out at 95℃for 4 h with mole ratios of cellulose glycosidase (AGU), 4-Dimethylaminopyridine (DMAP) and lauroyl chloride (LC) was 1:0.03:3. Meanwhile, the products showed good solubility performance in nonpolar solvent and excellent film properties without plasticizer.

      Process of melt differential centrifugal spinning technology
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  16-22. 
      Abstract ( 252 )   PDF (1998KB) ( 461 )   Save
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      Melt centrifugal spinning technology has the advantage of high efficiency and high orientation degree with the fibers prepared,but the technology is still in the initial stage of development,the prepared fiber diameter is thick,and related study of process and fiber thinning method is little.In this paper,melt centrifugal spinning of polypropylene ,which has a good flow ability, has been researched by the self-designed melt differential centrifugal spinning device; The superfine fibers have been successful prepared in centrifugal spinning experiments under different conditions,and the introduction of air assisted spinning has greatly refined the fiber diameter.In addition,the orthogonal experiment has designed in order to explore the influence weight of the different process parameters on fiber effect, provides theoretical and experimental foundation for the further development of melt centrifugal spinning.

      Structure and physical properties of willow fibers
      Journal of Textile Research. 2016, 37(01):  23-27. 
      Abstract ( 342 )   PDF (1650KB) ( 351 )   Save
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      In order to study the structure and properties of willow fibers, willow barks were degumming by sodium hydroxide boiling, and the obtained fibers were characterized by scanning electron microscopy, infrared spectroscopy, X ray diffraction, thermal analysis. The results show that the main composition of the willow biomass fibers is cellulose. The willow biomass fibers have smooth surface and vertical stripes. Cross section of the fibers with cavity is elliptical and irregular. The results of FTIR and XRD show that most of the none cellulose components are removed, crystal structure of the willow biomass fibers is cellulose I, the fibers has good thermal stability. Fineness of the willow biomass fibers is 2.1 dtex.The fibers are good inthermal stability, and the thermal decomposition temperature can reach 360 °C. It is shown that the willow fibers are suitable for spinning.

      Mechanical properties of hemp/polylactic acid composite foamed material
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  28-34. 
      Abstract ( 354 )   PDF (1648KB) ( 460 )   Save
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      The composite foaming material with hemp fiber reinforced poly-lactic acid (PLA) matrix was prepared by the method of mould foaming and the relationship between the mechanical properties of the hemp/PLA composite foamed material and the hemp fiber length as well as the hemp fiber addition were investigated. The results show that, the Young’s modulus and the yield stress of the compressive property of hemp/PLA composite foamed material were correlated with the exponential function of hemp fiber length in a positive squared relation, and with the hemp fiber addition in a positive squared relation. The breaking strength of hemp/PLA composite foamed material is correlated with the hemp fiber length and the hemp fiber addition in a positive exponent relation, respectively. Furthermore, with the increase of the hemp fiber length and the hemp fiber addition, the elasticity moduli of the hemp/PLA composite foaming material were all on an upward trend and the elongations at break show a little variation.

      Effect of fiber migration law in yarn body on yarn quality of complete condensing spinning
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  35-40. 
      Abstract ( 325 )   PDF (1702KB) ( 347 )   Save
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      Effects of complete condensing spinning in condensing zone on yarn quality are discussed in the paper. On QFA1528 spinning frame equipped with complete condensing spinning device, four concentration negative pressures 1600Pa, 2000Pa, 2400Pa and 2800Pa and four suction plug-in with different suction groove shapes, droplet groove, short-inclination groove, straight groove and long- inclination groove and three air flow guide plates named type A , type B and type C are selected to spin 9.7tex pure cotton yarn. Then the yarn indexes are tested. A technique of tracer fibers is used to measure the coefficient of fiber migration in the yarn body, and the effect of different condensing zone process on yarn quality are analyzed. The result show that when the negative pressure 2000Pa is selected, the yarn strength and evenness are the best while the negative pressure 2800Pa is help to reduce yarn harmful hairiness over 3mm.When the suction plug-in with short-inclination groove is selected, yarn evenness is the best while the yarn strength and evenness is the best with suction plug-in with long-inclination groove. When type B air flow guide plate is selected, yarn evenness is the best while yarn strength is the best with type C.

      Parameters optimization of air splicing by response surface method
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  41-46. 
      Abstract ( 239 )   PDF (1482KB) ( 335 )   Save
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      In order to study the effect of inlet pressure, untwisting time and overlapping length on the splice retained strength of splicing yarn, the orthogonal experiment design of three factors and three levels was carried out by using inlet pressure, untwisting time and overlapping length of separation yarn as the design factors. According to breaking strength of the spliced yarns, the response surface model of splice retained strength was obtained. On the base of the response surface model, the interaction effects of splicing inlet pressure, untwisting time and overlapping length on splice retained strength were discussed. The results show that inlet pressure and overlapping length have more significant influence on the splice retained strength of spliced yarn than untwisting time. 87.85% of origin yarn’s strength can be remained on the spliced yarn by applying the optimized parameters from response surface model.

      Shielding effectiveness of double electromagnetic shielding fabric
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  47-51. 
      Abstract ( 387 )   PDF (1189KB) ( 325 )   Save
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      This paper mainly research the shielding electromagnetic of double electromagnetic shielding fabric. Introduced the principle of electromagnetic shielding of double electromagnetic shielding fabric. Using flange coaxial method tested the Layers of fabric is a major factor on shielding effectiveness of electromagnetic shielding fabric. This paper mainly research the shielding electromagnetic of double layers electromagnetic shielding fabric. Introduced the principle of electromagnetic shielding of double layers electromagnetic shielding fabric,preliminary explored the influence factors of shielding effectiveness of double layers shielding fabric,and using flange coaxial method tested the shielding effectiveness of three groups of double shielding fabric combination. According to the results, increasing the volume content of metal fiber of the fabric and the pitch between the fabric can increase the shielding effectiveness of the double layers shielding fabric .The shielding effectiveness of the double layers shielding fabric is higher when the structure of the fabric surface is unanimous .

      Structural analysis and technical design of warp knitted broché fabric
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  52-56. 
      Abstract ( 356 )   PDF (1538KB) ( 383 )   Save
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      In actual production process, due to the special action of a single yarn selection device, largearea yarn breaking easily occurs in novel process of warp knitted borché fabrics while in startup, hence, the reason why yarns are easily broken during starting-up course weaving is introduced in detail, and an effective solution is proposed by using borché preparation process to nake preparation for the pattern production. Specifically, before the new warp knitted machine works, the prepared technical pattern is firstly preformed, and then pattern production is performed, and the broche preparation process is integrated in the Jacquard controller device. The results show that this solution can not only ensure the smooth operation of weaving, and can meet the fabric face quality required by the production. The design principle of the broche preparation process is proposed, and illustrated by examples.

      Bending load characteristic of carbon nano wires embedded into three-dimensional braided composite
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  57-63. 
      Abstract ( 590 )   PDF (1683KB) ( 409 )   Save
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      In order to achieve load monitoring of three-dimensional braided composites in real time, the strain characteristics of carbon nanot wires embedded into three-dimensional braided composites for three point bend test under different loads. The paper focuses on the analysis of resistance change of carbon nanotube thread for composites loading in tensile and compressive. Experimental results show that in the three point bending process, the relation of strain of specimen and change resistance of carbon nanotube thread is monotonic consistency loading to the fracture and resistance variation of carbon nanotube thread accord with exponential form. The hysteresis resistance of carbon nanotube thread is produced after the big load loading. The residual resistance of carbon nanotube thread is produced after unloading. The studies have shown that structure health status of three-dimensional braided composites may be sensed and monitored in real-time using carbon nanotube thread sensor l under bending. It will lay foundation for construction of structural health monitoring system for three-dimensional braided composite.

      Graphics performance skills research of pillows embroidery in South of Shaanxi
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  64-69. 
      Abstract ( 303 )   PDF (1831KB) ( 353 )   Save
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      The paper researched the graphics performance skills of pillows embroidery from composition of a picture,art performance and color analysis, a great deal of investigations has been carried out ,with the usage of folklore and anthropology theory,based on the history of hanzhong Shaanxi, and collected large amounts of data of pillow’s embroidery from Hanzhong by investigation. Hanzhong pillow’s embroidered graphic has a widerange of topics and diverse modeling with great artistic value. Meanwhile, pillow’sembroidered graphic represents local people’s simple but real lifestyle as well as the sincere traditional custom. As one of the folk custom, the expression of pillow embroidery highlights the advocate natural and praying's simple aesthetic consciousness of the local people.

      Preparation of tetradecanol – hexadecanol binary mixture thermochromic materials
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  70-74. 
      Abstract ( 453 )   PDF (1328KB) ( 367 )   Save
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      In order to widen the thermochromic temperature of thermochromic materials, using crystal violet lactone (CVL) as chromophore, bisphenol A as developer and tetradecanol – hexadecanol binary mixture as solvent synthesized thermochromic materials. By comparing the thermochromic properties of different ratios of chromophore, developer and solvent, the optimal proportion was determined. According to binary eutectic system theory, the theoretical eutectic point was obtained, and then the actual eutectic point was obtained by experimental analysis. Experimental results showed that the optimal proportion of chromophore, developer and solvent is 1:4:65, and the color difference analysis and DSC analysis showed that the thermochromic properties of these tetradecanol – hexadecanol binary mixture thermochromic materials were good and the thermochromic temperature were between 20 ℃ to 43 ℃.

      Synthesis and properties of crosslinked polyurethane acrylate modified with organic silicon
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  75-80. 
      Abstract ( 647 )   PDF (1441KB) ( 404 )   Save
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      For developing water-based polyurethane with excellent mechnical properties and better water resistance, a prepolymer with vinyl end-capping was prepared using polyether polyols, toluene diisocynate, 2,2-dimethylolbutanoic acid and 2-hydroethyl methacrylate. These emulsions were used to copolymerize with methyl methacrylate, butyl acrylate and silicon monomers, including vinyltriisopropoxysilane (A173) and vinyl-ended polydimethylsiloxane (Vi-PDMS), to synthesize the silicon modified polyurethane acrylate emulsion. The chemical structure of the Si-PUA emulsion was characterized by Fourier Transform Infrared Spectrum. The water absorption and mechanical property of the Si-PUA film were investigated. The result showed that the increasing dose of A173 in the copolymerization could enhance the strength but reduce the elongation at break of the Si-PUA films. The presence of Vi-PDMS in the synthesis could give rise to better water resistance of the films but result in lower mechanical properties, especially for higher content of Vi-PDMS. When using 2.5% A173 and 3% Vi-PDMS in the synthesis of Si-PUA, the breaking strength of the resultant film was up to 1.65MPa, the elongation at break was 242%, and water absorption was as low as 8.32 %.

      Preparation of formaldehyde free glue for lining and its application
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  81-84. 
      Abstract ( 339 )   PDF (1078KB) ( 295 )   Save
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      Ordinary lining cloth are mainly produced with urine melamine aldehyde resin, but this kind of lining always releases formaldehyde. Therefore, a new formaldehyde free interlining resin was synthesized used acrylamide and supplemented by melamine and glyoxal, and studied the optimum preparation technology for lining. The results showed that: the lining cloth glue synthesized with acrylamide, melamine and glyoxal , due to the introduction of free radical polymerization, with a stepwise condensation reaction, could rapidly fabricate free formaldehyde lining with excellent stiffness, elastic wrinkle and whiteness. The best preparation process of lining was as follows: the baking temperature was 150 oC, baking time 2 min, ammonium persulfate mass concentration of 2 g / L, zinc nitrate mass concentration of 15 g / L.

      Short process proofing method of integration of single yarn dyeing and sizing
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  85-92. 
      Abstract ( 271 )   PDF (1546KB) ( 416 )   Save
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      The denim yarn’s proofing mainly is completed by the dyeing and sizing combine machine in a large production line, or a bunch of yarn is dyed before sizing step by step. The former’s samples have small varieties, long process and are wasted more. The latter’s process is discontinuity, the efficiency and quality can't meet the requirements. Now, we discuss the technology of denim yarn’ proofing with the single yarn dyeing and sizing combine machine, present three short process scheme of the single yarn dyeing and sizing, and analyze them in two aspects: device’s short process, process’s continuation and high-efficiency.

      Application of Stearns-Noechel model on color blending of naturally colored cotton
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  93-97. 
      Abstract ( 382 )   PDF (1078KB) ( 340 )   Save
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      In order to improve the design efficiency for blending fabric of natural colored cotton, Datacolor SF600+ was obtained to test the color date of mixed fiber、blended yarns and interwoven fabric.Predicted the color of loose material group、blended yarns and interwoven fabric by Stearns-Noechel model,and then CIEDE2000 color difference formula was prepared to calculate the color difference of the prediction and the practice .Optimized the parameter of model for loose material group、blended yarns and interwoven fabric.The optimization value of M are 0.096, 0.128 and 0.01,and the corresponding color difference are 1.72, 3.40 and 4.90 CIELab units, thus establish the reflectance prediction model between fiber, yarn and fabric under this experimental condition isestablished.

      Influence of hydrophilic/hydrophobic finishing on moisture-transfer and dry-fast property of cotton fabric with double-layers structure
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  98-103. 
      Abstract ( 435 )   PDF (1536KB) ( 377 )   Save
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      In order to explore the influence of Hydrophilic/hydrophobic finishing on moisture-transfer and dry-fast property of cotton fabric with double layers structure, five kinds of cotton fabrics with different structure were designed and finished by the hydrophilic/hydrophobic methods. The influence of Hydrophilic/hydrophobic finishing on moisture-transfer and dry-fast property of cotton fabric was explored. The results showed that the moisture absorption performance of honeycomb-satin structure is the optimal in moist environment, the diffusion moisture performance of mesh-honeycomb structure is good, and mesh-honeycomb structure has significant moisture dissipation property. In sweating environment, honeycomb-satin structure had the best moisture absorption and diffusion moisture performance while honeycomb-crepe had most outstanding dissipation property.

      Application of maleic anhydride modified hyperbranched polymer on finishing of cotton fabric with nano-sliver
      Journal of Textile Research. 2016, 37(01):  104-110. 
      Abstract ( 348 )   PDF (1891KB) ( 337 )   Save
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      In order to improve the amount of nano-silver on the fabric and reduce the aggregation of nano-silver , maleic anhydride modified hyperbranched polymers was applied as template for preparing silver nitrate /modified hyperbranched polymer finishing liquor, and through dipping the cotton fabric in the liquor and steaming for silver ion reduction, the nano-silver finished cotton fabric was prepared. The influence of the mass ratio of silver nitrate /modified hyperbranched polymer on the particle size of nano-silver were studied, the finishing liquor concentration and steaming conditions on finishing effects were investigated. The washing resistance of the finished fabric was tested, and the process of maleic anhydride modified hyperbranched polymers as template to prepare nano–silver fabric were compared with other finishing process. The results showed that the best mass ratio of silver nitrate /modified hyperbranched was 0.17 : 2, the optimal steaming time was 45min, when the concentration of silver nitrate was 0.085g/L, the bacterial inhibition rate of the finished fabric reached 99.9%. After 50 wash cycles, the bacterial inhibition rate was over 94%.Compared to finishing processes of cotton finished by reducing silver ions with cotton itself and the method of succinic anhydride modified hyperbranched polymer as template, the silver content of fabrics finished by succinic anhydride modified hyperbranched polymer as template is high and aggregation of nano-silver is improved.

      Development and evaluation of firefighter’s clothing capable of enhancing heat dissipation
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  111-115. 
      Abstract ( 311 )   PDF (1134KB) ( 366 )   Save
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      After surveying in firefighting’s bureau, and referring the development area of firefighter’s clothing,the clothing were designed on the armpits and the trousers to give more flowing air inside the garment and enhance the evaporation of heat. Human subject test was carried out. The experiment data was analyzed in mathematic statistic ways. Paired-samples T test was used to analyze the significant difference and compare the ventialation openings’ in two situations: open and close. The results showed that comparied with the condition of closing, the opening condition had more advantages on comfort. The results showed that comparied with the conditions of closing, the opening conditions had more advantages on comfort.It can make the rate of heart beating less than they are closed and make the temperature under the close reduce,above all the temperature of the back and the waist.The heat loss was significantly reduced in the new firefighter’s clothing, the body temperature reduces especially for the back and the waist.

      Development and performance evaluation of sportswear based on male body sweating pattern
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  116-122. 
      Abstract ( 792 )   PDF (1636KB) ( 396 )   Save
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      The structure feature of sportswear affects the heat and moisture transfer property, and thus influences thermal comfort of the wearer. Based on the male local sweating pattern and properties of current moisture absorbent and quick dry fabric, several functional sportswear prototypes were developed by fabrics splicing. The advanced 34-zone sweating manikin ‘Newton’ was used to measure thermal insulation, evaporative resistance and permeability index of the developed body mapping sportswear (BMS), and the predicted heat stress (PHS) model was applied to predict the physiological parameters such as skin temperature, core temperature, total sweating production and sweating rate in different environmental conditions. Those indices were used to evaluate the thermoregulatory of BMS. The findings were helpful to optimize the design, and thus provide effective suggestions for the engineering of BMS.

       Thermal comfort property of Baerhu Mongolian robes
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  123-126. 
      Abstract ( 385 )   PDF (1240KB) ( 328 )   Save
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      To well revealed thermal comfort performances and the adaptation to Mongolian Plateau of Mongolian Robes,the thermal insulation values of Baerhu Mongolian robes and the Baerhu Mongolian clothing ensembles were tested in the laboratory by the thermal manikin testing,and the clothing area factors of the Baerhu Mongolian clothing ensembles were investigated through the camera method. The results were analysed by SPSS to get the relation of the fcl and clo values and built the prediction model of thermal comfort property of Mongolian clothing ensembles based on partial thermal insulation values.

      Secondary creative design of fabric
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  127-131. 
      Abstract ( 428 )   PDF (1668KB) ( 366 )   Save
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      In order to improve the clothing design personality and appearance, it expounds the concept of secondary design of fabric in fashion design and its significance, and combining with secondary works explores main techniques of design from fabric increase design and fabric decrease design, fabric deformation design, fabric pattern design, fabric comprchensive design. Results indicate that the secondary design method of fabric is poentiful. Among them, fabric increase design can make the fabric more ornamental, beautiful and stereo feeling. Fabric decrease design can produce old hollow out of fabric texture. Fabric deformation design can make fabuec has administrative levels feeling and pattern redesign can increase the art aesthetic feeling of clothing.

      Comfort and functionality of dress pocket
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  132-136. 
      Abstract ( 396 )   PDF (1443KB) ( 349 )   Save
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      To study comfort and functionality of dress pocket, by changing the left and right position of pocket, human try on experiments were carried on. The relationship between comfort and the left and right position of dress pocket were obtained using the method of subjective evaluation, the best pocket position were got. On this basis, effects of the pocket type on each performance were explored. The results indicated that pockets’ comfort on position is affected by arm length, the most comfortable position is 0-2 cm forward from bust width line. The different type of pockets have a close relationship with comfort, functionality and decoration. In patch pockets, gathering patch pocket is the optimum in comfort and functionality, and flat patch pocket is the optimum in decorative effect. In insert pockets, single piping pocket is the most comfortable, double piping pocket is the most functional, and bias insert pocket is the strongest decoration. In side pockets, the pocket with a flap has more comfortness and adornment than no flap.

       

      Design and realization of management system of definite spindle for yarn breakage in spinning frame
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  137-141. 
      Abstract ( 414 )   PDF (1229KB) ( 327 )   Save
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       For the management of yarn breakage, the MIS of definite spindle for yarn breakage in spinning frame is developed based on Ring Route yarn breakage detection device . Real-time data related to yarn breakage from every frame was transmitted to the PC through the wireless WIFI and stored in SQL database through the use of database management technology. With the use of the management software designed by VB6.0, enquiries of yarn breakage could be achieved either by searching the serial number of the machine or by winding number. The design of network structure of the system, the realization of communicating function and the development of management software are discussed. The results show that accurate data of yarn breakage can be collected by the system and the basic needs of daily broken yarn quality management of spinning enterprises can be met through the application of this system.

      Structure optimization of single cicular hole auxiliary nozzle in air-jet loom
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  142-146. 
      Abstract ( 406 )   PDF (1164KB) ( 426 )   Save
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      In order to reduce the energy consumption of the air jet loom,three different pore sizes of auxiliary nozzle were designed. Fluid dynamics analysis module (FLUENT) was used to simulate the weft insertion flow filed of auxiliary nozzle. The velocity distri- bution curve on the central line of different pore sizes of auxiliary nozzle were obtained. A desinged experimental platfrom was used to testify the theory values. It found that flow field simulation analysis is in accordance with experimental value. The theory can be used to improve the structure and reduce energy consumption of the auxiliary nozzle. The experimental results showed that when the supply gas pressure was 0.3 MPa, the pore size of nozzle was1.1mm, and the energy consumption was reduced by about 25 % compared with the pore size of 1.5mm.

      Automatic recognition and positioning method of fabric slitting zone using one-dimensional Fourier transform
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  147-151. 
      Abstract ( 448 )   PDF (1482KB) ( 377 )   Save
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      The current recognition of fabuec slitting zone is still completed manully during the working process of fabric slitting machine. This paper provides a high-speed and real-time method to recognize and position fabric slitting zone automatically, focus on the current situation where the recognition of fabric slitting zone is completed by human during the working process of fabric slitting machine. This method can reduce the labor intensity of workers and improve the effectiveness and accuracy of fabric slitting. One dimensional Fourier transform is used in this method to extracted features in frequency domain.Then we can positioning the center of the slitting zone based on image detection technique.In addition, using VC++ language, we design a software to test the method.The results of software testing indicate that the method we proposed can recognize the fabric slitting zone and positioning its center quickly and precisely, and improve the effectiveness and reliability of fabric slitting machine as well.

      Fuzzy-PID control and experimental for stentering system of wide heat-setting machine
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  152-158. 
      Abstract ( 276 )   PDF (1656KB) ( 455 )   Save
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      To solve the problems of fluctuation and overshoot and poor response characteristics of tentering system tension and arm swing, the fuzzy-PID control algorithm to achieve the tension stability of stentering tension and needle plate chain and high tracking accuracy of Swing arm fabric edge. The results showed that The Fuzzy-PID control algorithm can effectively improve the dynamic characteristics of stentering system.The overshoot of stentering tension is less than 0.5KN, and the adjust-time decreased from 11.9s to 6.8s, and the stentering tension stabilized at 87±1KN.After a disturbance the needle plate chain tension can return to steady state in only 2 second and does not produce the premise of overshoot.The following system of swing arm position will not cause overshoot and it will response quickly.Using Fuzzy-PID control algorithm can reduce the fluctuations and overshoot of the tension and the swing arm position, and improve the dynamic response and steady state characteristics of stentering system.

      Research and development of aligned nanofibers prepared by electrospinning
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  159-166. 
      Abstract ( 345 )   PDF (2354KB) ( 550 )   Save
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      The conventional electrospun non-woven membranes have chaotic microstructure and inferior mechanical properties, which limit their applications. However, aligned nanofibers possess anisotropic morphology, anisotropic wettability, higher mechanical properties, and these advantages endows aligned nanofibers wider range of applications. Hence, many researchers modified conventional collecting apparatus to fabricate aligned nanofibers. In this paper, the methods and collecting equipments including rotating cylinder, parallel plate, auxiliary electrodes and some other apparatus was summarized, and the merits and demerits of these methods were also analyzed and compared, thus providing a reference for the further development of aligned nanofiber and expanding of the application of nanofibers.

      Research progress of heat transfer mechanism of air gap under firefighter protective clothing
      JOURNAL OF TEXTILE RESEARCH. 2016, 37(01):  167-172. 
      Abstract ( 879 )   PDF (1611KB) ( 1042 )   Save
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      Research of heat transfer mechanism of air gap can not only provide a guideline for more accurate test on thermal protective performance, but also improve the precision of numerical simulation about heat and moisture transfer model.Based on the role of air gap in thermal protective performance test and the research status of heat transfer models of air gap, the features of air gap between clothing and body are analyzed. And heat transfer mechanism of air gap is summarized in terms of heat conduction, convective heat transfer and radiative heat transfer. Modeling heat transfer of air gap is proposed under difference exposure conditions, and predicting future direction in the study on heat transfer model of air gap between protective clothing and skin surface.