Table of Content

15 January 2012, Volume 33 Issue 1

Previous Issue    Next Issue

Comparative study on pigments composition in natural brown cotton fiber and white cottonseed hulls

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  1-5. 

Abstract ( 983 )   PDF (1107KB) ( 448 )   Save

Related Articles | Metrics

In this paper, pigments had been extracted from natural brown cotton fiber(NBCF) and delinted white cottonseed hulls(DWCH) by extensive use of diagnostic reagents, UV-VIS Spectrophotometer, infrared absorption spectra and normal phase high-performance liquid chromatography (NP-HPLC) comparative analysis of their chemical compositions. The results of corresponding color reactions of two kinds of pigments showed that they were similar in main chemical constituents and all belonged to condensed tannins(CT). The dominant ingredient of both two pigments were CT with pyrocatechol structure, the main ingredient of DWCH pigments also contained resorcin structure while the content of the component with this structure was very small in NBCF pigments. The NP-HPLC method was developed to separate the two samples, the results showed that there were four compositions with one overwhelming in NBCF pigments, and various kinds of constituents were separated in DWCH pigments, however, constituents with the same molecular structure were not found in two pigments.

Fast Quantitative Analysis of Cellulose and Gum Content in Ramie by Near-infrared Techniques

JIANG Wei, HAN Guang-Ting, ZHANG Yuan-Ming, CHEN Jian-Hua

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  6-10. 

Abstract ( 800 )   PDF (1000KB) ( 508 )   Save

Related Articles | Metrics

As an important cellulose raw material in textile industry in China, ramie needs a fast and accurate analysis method to determine its chemical composition. In this research, calibration models were established using near-infrared (NIR) spectroscopy assisted with partial least square (PLS) to predict the main chemical compositions of ramie based on the prior work using Acousto-optic tunable filter (AOTF) near infrared spectrograph, and the thickness of samples affecting calibration model was also discussed. Results show that the average relative error (ARE) between the predict value and the wet chemistry measured value of cellulose and gum content were 1.11% and 4.54%, which were low enough for prediction. Meanwhile, the thicker of sample, the more accurate for NIR model to prediction.

The mechanism of polyester PET degradationed by glycerol

YU Tian-Shi, YU Jie, GE Ming-Qiao

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  11-14. 

Abstract ( 1093 )   PDF (834KB) ( 6843 )   Save

Related Articles | Metrics

In this paper, we studied the degradation mechanism of the waste polyester (PET) degradated in glycerol. We used Infrared Spectroscopy (FT-IR) ,Ultraviolet(UV), Mass (MS) , High Performance Liquid Chromatography (HPLC) and (TGA) to analyze the characterization of the degradated product. Firstly, the structures of the degradated product wase got by FT-IR and UV; then we got the molecular structure and molecular weight through Mass; what’s more, we analyzed the degradation product quantitatively with HPLC, at the same time, we combined the TGA analysis to determine the pure of the alcoholysis product, finally, we got the epoxy value through the method of hydrochloric acid-acetone. Synthesize the five analysis, we got the degradation mechanism, and the epoxy value was 0.259.

Vapor grown carbon fiber / polyamide 6 nanofibers reinforced Poly lactic acid composite

HE Bin, XUAN Xiao-Hui, PAN Zhi-Juan

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  15-19. 

Abstract ( 897 )   PDF (1205KB) ( 453 )   Save

Related Articles | Metrics

The surface functionalization treatment of VGCF and its dispersion in polymer were studied. The VGCF/PA6 nanofibrous mats with different amount of VGCF were prepared by electrospinning, and then VGCF/PA6 nanofibers reinforced PLA composite was obtained by hot pressing. The results indicated that, VGCF treated with mixed acid presented a better dispersion in polymer solution when the VGCF solution was ultrasonicated for 1h befor and after the addition of polymer. With surfactant treatment, the dispersion of the acid-treat VGCF in the polymer solution had obviously improved. With the addition of VGCF into the PA6/formic acid spinning solution, the mechanical properties were improved. When the mass fraction of VGCF in the spinning solution was 0.03%, the breaking strength of VGCF/PA6 nanofibers reached the maximum value, 14.68MPa. The breaking strength of composites increased at first and then decreased with the increasing content of VGCF/PA6 nanofibers in the composites, and the peak value, 25.80MPa, appeared as the mass fraction of VGCF/PA6 nanofibers reached 7.39%.

Characterization of the porosity of Nanofibers Membrane based on image analyse technology

ZHOU Ming, WANG Hong-Bo, WANG Yin-Li, GAO Wei-Dong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  20-23. 

Abstract ( 1120 )   PDF (921KB) ( 587 )   Save

Related Articles | Metrics

A new characterization method for nanofibers membrane was put forward based on the digital image processing and analysis technology. Firstly, segmentation threshold of SEM images were obtained by Photoshop, and then the areas were counted by Matlab. And finally the value of porosity was acquired according to calculating. Test results showed that the porosity of nanofiber membrane decreases with fiber diameter increased. Meanwhile,the results demonstrated that the errors of samples were less than 6% compared with density method. Furthermore, in order to research the influence of the fiber crisscross on porosity, membranes with different thickness were prepared and tested in the same conditions, and it was found that the errors between samples were less than 4% ,therefore,fiber crisscross had little influence on the measurement results might be considered.

Analysis and Research of Para-aramid Erosion of the Supersonic-wave

ZHU Zheng-Feng, QI Da-Peng, WANG Jun-Hua, HAN Qian

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  24-28. 

Abstract ( 817 )   PDF (1087KB) ( 458 )   Save

Related Articles | Metrics

Aramid 1414 fibers made in China and Kevlar49 fibers made in the USA as experimental materials were used in this paper. The differences of molecule structures were contrasted through degree of polymerization by the detections of infrared spectrum and viscosity. The Aramid 1414 fibers were put into distilled water and seawater made by ourself respectively, then using the supersonic-wave to deal with them. After this, using the SEM to observe, found that crack appears on the fiber surfaces, presented the fibrillation and plush-like microfine fibre. Meanwhile the strength weak link increased and breaking strength and elongation at break of fibers lowered. Molecular kinetic theory was used in this paper to study loss of fibers the mechanical property.

Research on Influence Factors for Shrinkage of Acrylic Bulked Yarn

MA Ling, WANG Ya-Jing, TANG Zhen-Bo

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  29-32. 

Abstract ( 787 )   PDF (755KB) ( 447 )   Save

Related Articles | Metrics

A stochastic simulation of the unevenness of staple yarns

YAN Guang-Song, SU Yu-Heng, ZHU Jin-Zhong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  33-37. 

Abstract ( 854 )   PDF (1229KB) ( 423 )   Save

Related Articles | Metrics

In the research of yarn unevenness, the fiber alignment in the yarn is the key to description of the problem. If an assumption is given that the ends of the fibers in yarn follow a uniform distribution along the yarn length, for the given fiber length distribution, then the ideal yarn model can be established geometrically. The Monte Carlo method is used to simulate the variation of the number of fibers in the yarn cross section. In the geometric model, a segment of 8 mm is set to simulate the yarn unevenness in the capacitive type yarn unevenness tester. The comparison shows that under the assumption that fibers in yarn are arranged randomly, the simulated CV of the yarn will increase with the increase of yarn count. The number of fibers in the yarn cross section follows normal distribution asymptotically. The CV of the number of fibers in yarn cross section and the quantity of fibers in the segment are not relevant significantly. The test data illustrates the validity of the model.

The Method of Expressing Jacquard Silk Fabric with Single Color Based on a Model of Plain Weave

LU Jia-Liang, YANG Ting-Ting, CHEN De-Chao, ZHOU Le-Jun, WANG Ting, ZHANG Yu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  38-43. 

Abstract ( 1040 )   PDF (1244KB) ( 554 )   Save

Related Articles | Metrics

In order to express a painting or other art works with gradual transition-grayscale effect, this paper, according to the principle of expressing jacquard silk fabric with single color, adopts a co-planer weave ---- plain weave, to preliminary design a weave model of expressing jacquard silk fabric with single color, which was structured by a series of derivative plain weaves. And, based on it, get the fabric with derivative plain weaves through jacquard fabric experiments. Then, through analyzing the pixels’ brightness in the fabric, sort the different fabrics with derivative plain weaves by the glossiness with gradual transition effect, which was caused by different degrees of brightness. After that, through choosing the useful plain weaves from the weave model, make a one to one correspondence between derivative plain weaves and varying degrees of brightness in art works like paintings. At last, the weaving experiment indicates, that the expression of jacquard silk fabric based on the derivative plain weaves model, can produce a special texture effect, and also a fire-new sense of vision in the jacquard silk fabric.

Investigation on effect of weave structure of fabrics on cell immobilization

GONG Ji-Xian, LI Hui-Qin, XU Jie, WU Zhi-Jun, DING Guo-Qiang, CHEN Ke-Ning

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  44-47. 

Abstract ( 839 )   PDF (935KB) ( 325 )   Save

Related Articles | Metrics

Cell immobilization is one of research focus in bioengineering. Fabrics provide an attractive alternative for cell immobilization carrier. In this study, several kinds of fabrics with different weave structure were designed and produced acting as cell immobilization carrier. Adsorptive capacity and adsorptive stability of the textile carriers with different weave structure were measured and the adsorptive acts of textile carriers influenced by weave structure were also investigated. It is showed that adsorptive capacity and stability was significantly affected by weave structure of fabric carriers. The result also indicated that the character of cells also have an impact on the immobilization effect.

Verification of the Peirce’s Model for the Geometric Structure of the Plain Woven Fabrics

CAI Yu, ZHENG Tian-Yong, JING Shu-Juan, ZHANG Xiang-Jun

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  48-53. 

Abstract ( 1021 )   PDF (1226KB) ( 421 )   Save

Related Articles | Metrics

To put forward a theory to estimate the accuracy of a given woven structure model, the geometry of the plain weave fabric by Peirce’s model is calculated and the similarity principle of the curve is used in the paper. The fabric structure is simulated by using the cubic B spline surface based on the non-devastating measurement with Keyence digital microscope. Through the established model combined with advanced discrete Fréchet distance criterion, both the discrete Fréchet distances of the corresponding peak points, trough points and the absolute differences of the discrete Fréchet distances between trough points and adjacent peak points need to be calculated. If all the absolute differences of the discrete Fréchet distances are within a given threshold, the curves reconstructed with different methods are regarded to be similar. Then the similarity of the two kinds of curves with different 3D structure model of the fabric is analyzed and the exact similarity value is also calculated through the MatLab application. Accurate similarity values calculated with the warp and weft of Sample I and Sample II were 90%, 86% and 82%, 94% respectively.

On notch sensitivity of textile reinforced flexible composites

WANG Ze-Xing, JIANG Jin-Hua, CHEN 南Liang

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  54-59. 

Abstract ( 916 )   PDF (1268KB) ( 479 )   Save

Related Articles | Metrics

To evaluate the effects of notch type and notch depth on the tensile properties for textile reinforced flexible composites and to better design and application textile reinforced flexible composites, the uniaxial tensile tests on SENT, DENT and CENT specimens with various notch depths were conducted. The experimental results show that the textile reinforced flexible composite exhibits significantly notch sensitivity. Compared with CENT specimens, the SENT specimens exhibit higher notch sensitivity, and lower for DENT specimens. In this paper, the propagation of notch and the criterion of notch propagation threshold force were also discussed. For these three kinds of notch types, the notch sensitivity and notch toughness were also studied.

Investigation of Application of Graft-modified Sesbania Gum on Textile Sizing

LIU Hui-Juan, GAO Lin, XUE Man, SHEN Ding, CUI Yuan-Chen

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  60-64. 

Abstract ( 799 )   PDF (1090KB) ( 538 )   Save

Related Articles | Metrics

Study on the dispersion stabilities of ultrafine carbon black in N-methyl morpholine-N-oxide solution

ZHANG Kai, FU Shao-Hai, TIAN An-Li, WANG Chao-Xia, ZHANG Xia

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  65-68. 

Abstract ( 1021 )   PDF (1065KB) ( 764 )   Save

Related Articles | Metrics

The waterborne ultrafine carbon black dispersion which was used in dope dyeing for Lyocell fiber were prepared by using direct dispersing method and emulsion polymerization method，respectively，and the particle size which obtained with different method and their dispersion stabilities in the N-methyl morpholine-N-oxide (NMMO) solution were further investigated．Experimental results revealed that emulsion polymerization method was suitable for preparation of nanoscale waterborne carbon dispersion．The centrifugal and antitemperature stabilities of encapsulated carbon in NMMO solution were obviously better than dispersing carbon．The apparent viscosity of NMMO solution decreased when added some encapsulated carbon, the more amount of encapsulated carbon added，the lower viscosity of NMMO solution was．

Adsorption Behavior of PAHs(Naphthalene) on PET Fabric

MAO Wen-Liang, CHEN Hai-Xiang, ZHANG Ke-He, YU Hang-Fang, YU Xu-Xia, WANG Lei

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  69-74. 

Abstract ( 859 )   PDF (1221KB) ( 578 )   Save

Related Articles | Metrics

Adsorption kinetics, isothermal adsorption and adsorption thermodynamics of naphthalene on PET fabric were investigated in this paper, the influence of temperature on adsorption of naphthalene also was determined. The adsorbed quantity of naphthalene on PET fabric is high, and the pseudo-second-order model fitted the sorption kinetics data well over the sorption duration; the linear sorption processes of naphthalene could be described by the linear model, and isothermal adsorption of naphthalene with the ascending of experiment temperature, the adsorbed quantity decreases; on the sorption duration of naphthalene on PET fabric, the adsorption thermodynamics ΔH0 is－16.494 kJ/mol and ΔG0＜0, these results indicate that adsorption of naphthalene is exothermic and spontaneous and the major forces are Bond dipole force and Hydrogen bond force．

The relationship between dye structure and their dyeing properties of reactive yellow dyes containing fluoro-triazine bifunctionyl groups

PENG Jie, ZHANG Rong, LIN Li, WU Guo-Dong, WU Zu-Wang

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  75-80. 

Abstract ( 1298 )   PDF (1202KB) ( 460 )   Save

Related Articles | Metrics

Three bi-functional reactive yellow dyes containing fluoro-triazinyl groups, which were based on 2-aminonaphthalene-1, 3, 6-trisulfonic acid as the diazo components and m-urido-aniline as the azo components, have been studied. Their UV-visible absorption spectra, dyeing character parameters and wet fastness have been evaluated comparing with reactive yellow dye C.I.176. The relationship between dye structures and their dyeing properties are investigated. It shows that the reactivity of fluoro-triazinyl reactive dye is much higher than corresponding chloro-triazinyl reactive dye, owing to the strong withdrawing electron effect and easily leaving of fluorine atom. Different substituent groups on triazinyl ring can affect the planar and linear structure of molecules, thus causing change the performance parameters of dyes. In addition, the effect of different substituent on chromophore can be predicted by micro-perturbation MO theory.

Study on Hydrogen Peroxide Bleaching Catalyzed by Metal Phthalocyanines

REN Can, SONG Min, ZHANG Lin-Ping, MAO Zhi-Ping

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  81-86. 

Abstract ( 934 )   PDF (1215KB) ( 677 )   Save

Related Articles | Metrics

A bionic enzyme metallophthalocyanine compound metalloPhthalocyanine MPcR was synthesized and used in textile bleaching process and the catalytic effect was discussed by single factor experiment and orthogonal tests. The optimum bleaching recipe consists of utilizing a bath containing JFC (2g/L), MA-AA( 0.2g/L), 30% H2O2 (30g/L) and catalyst MPcR (15μmol/L) . The treatment is carried out at 80℃ (pH 9.5) for 60min . The bleaching process is energy-saving besides its superior bleaching results.

Anti-ultraviolet finishing of PET fabrics with nano-ZrO2 sol

HUANG Hai-Jian, TIAN Bao-Zhong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  87-91. 

Abstract ( 987 )   PDF (998KB) ( 511 )   Save

Related Articles | Metrics

For applying nano-particles to the functional finishing of textiles, Nano-ZrO2 sol was prepared by sol-gel method, and the PET fabrics was treated with the ZrO2 sol by dip-padding process. A thin layer of nano-ZrO2 particles was formed onto the surface of the fabrics after been cured. The effects of concentration of reactant, kind of hydrolysis promoter and the ratio of reactant and hydrolysis promoter to the particle size of ZrO2 sol were analyzed, and the optimal reaction conditions for preparing nano-ZrO2 sol were determined as follows: concentration of the reactant 0.10mol/L, oxydol as hydrolysis promoter, quality ratio of oxydol to ZrCl4 1:1. ZrO2 sol with about 60nm in diameter was obtained in optimal reaction conditions. The ultraviolet protection factor (UPF) of the treated PET fabrics reaches 185 from 86(cured at 150℃), which has a much lower ultraviolet ray transmission in UVA. The standard test to washing (soaping) showed that the UPF value still remains 132 after 50 washing cycles. The experimental results showed that the treated PET fabrics possess durable UV-resistance property.

Preparation and Properties of Knitted Coated fabric

DU Wen-Qin, XU Jie

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  92-95. 

Abstract ( 756 )   PDF (804KB) ( 425 )   Save

Related Articles | Metrics

In order to get a better knitted coated fabric with flame retardancy, first of all, knitted fabric was finished by padding flame retardant, then coated with polyurethane(PU) which includes flame retardant. The optimum transfer coating process is obtained by orthogonal experiment ,the surface layer thickness of 0.1mm, the surface layer of drying temperature of 100 ℃, the surface layer of drying time of 1min, the bonding layer thickness of 0.1mm,the bonding layer drying temperature of 120 ℃, the bonding layer drying time of 2min. Knitted coated fabric with flame retardancy are manufactured by the optimum coating process, the fabric hidden burning time and continued burning time are 0 second, char length 10.5cm. Washing durability of coated fabric was tested through the washing test. After 20 tines washing, the fabric hidden burning time and continued burning time still are 0 second, char length 15.5cm. The results showed that the coated fabric has good flame retardancy and the washing durability.

Determination of 7 Nipagin Esters in Textiles by Ultra Performance Liquid Chromatography Coupled with Quadrupole Mass Spectrometry

WU Gang, ZHAO Shan-Hong, WU Jian-Jian, DONG Suo-Zhuai, GUO Fang-Long, WANG Li-Jun, YE Qing-Fu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  96-101. 

Abstract ( 916 )   PDF (1231KB) ( 467 )   Save

Related Articles | Metrics

A novel method has been developed for the rapid separation and determination of 7 nipagin esters in textiles by ultra performance liquid chromatography-quadrupole mass spectrometry (UPLC-MS/MS) in 7 min. Nipagin esters residues in textiles were extracted by ultrasonic extraction with methanol. The extract was dried and redissolved in the mixed solvent of methanol and water (1+1). The chromatographic analysis was performed on an ACQUITY UPLC? BEH C18 column (50 mm × 2.1 mm i.d.，1.7μm ) by a gradient elution employing of methanol and water as a mobile phase. The analytes were detected using electrospray ionization (ESI) tandem mass spectrometry with multiple reaction monitoring (MRM) in negative ion mode. The calibration curves showed good linearity in the range of 0.1-1.0μg/mL for all nipagin esters with the limits of determination (LOD) of 4-12μg/kg. The recoveries of 7 nipagin esters at the spiked concentration levels of 0.5，1.0 and 3.0 mg/kg ranged from 76.09 ± 4.92 to 106.65 ± 4.90％ with RSD of 4.60-14.01％.

The shaping structure and design method of jacquard warp knitted seamless garment

DONG Zhi-Jia, JIANG Gao-Ming

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  102-106. 

Abstract ( 1127 )   PDF (1201KB) ( 800 )   Save

Related Articles | Metrics

Based on the deep study of the technological structure and classification of jacquard warp knitted seamless garment as well as the structural characteristics of human body, the prototype pattern for the designing and technology of warp jacquard seamless garment was established from the perspective of sports functionality. Using the clothing prototype theory and the principle of jacquard warp seamless knitting, the corresponding relationship between the combined straight barrel shaping structure seamless garment and the human structure size was studied, and also the 2D prototype template of a jacket and trousers in . bmp format that compatible the designing and technological software was obtained. According to the human structural principle and the fat distribution features, the method of functional areas division of the prototype templates and graphic designing was proposed, thus, an effective way of new product development for jacquard warp knitting seamless garment was developed.

Series of Students Uniform Size Design Based on male college student 's Height and Weight in Liaoning Province

MU Hong, LU Xin, WANG Dian-Fu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  107-110. 

Abstract ( 1186 )   PDF (918KB) ( 523 )   Save

Related Articles | Metrics

When an enterprise produces school uniforms, it often takes the clothing specification and size based on the students’ height and weight as the basic information. This kind of method relying on the experience, it is impossible to meet the development requirement. Characteristics of the male college students’ bodies in Liaoning Province was analysed in this pape, based on the survey of 270 male college students’ bodies, in which 15 body measures were taken. Through the regression analysis of these data, the results shows that the height and weight have influenced on waist girth significantly, and an binary linear equation about height and weight is established. Base on traditional series size design, the relationships between height and length, waist girth and width were significant, and then a equation of a degree is established. In this way, a reasonable uniform series size of male college students can be obtained, which will fit the figure better.

Evolution Causes Analysis of She’s Ancient Costume from the Perspective of Cultural Change

YAN Jing, FAN Xue-Rong, CHEN Liang-Yu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  111-115. 

Abstract ( 897 )   PDF (1376KB) ( 443 )   Save

Related Articles | Metrics

According to historical documents, this article discusses and summaries the reasons of changes on ancient costume culture of Shes Nationality based on an analysis of development and evolution of Shes’ ancient costume culture. The factors that affect the changes can be summarized as two aspects, one is the impetus which promotes the evolution, and the other one is resistant force which saves the heritage. The impetus can be divided into biological factor (national integration), geographical factor (migration), economic factor (economic changes in lifestyle), technology development factor (dyeing technology), cultural transmission factor (the mainstream culture infection), psychological factor (imitation psychology) and so on; the resistant force mainly focuses on national faith of Panhu worship and national character of resistance. The changes on ethnic costumes, which reflect the formation and development of the Chinese culture and cohesiveness, are usually the result of multiple factors.

Discussion on the Variety of Fashion in Tang Dynasty from the Perspective of Blending Art

ZUO Shuang-Xi, ZHENG Huai-Xiang-

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  116-120. 

Abstract ( 914 )   PDF (1202KB) ( 637 )   Save

Related Articles | Metrics

the fashion in Tang dynasty is diverse and conlorful, it characterized magnificence and openness wchich had borrowed from other cultures. This article has explained the character and origin of fashion in Tang dynasty. It analyzed it’s features from the perspective of culture fuse blend, and discussed the different culture elements of lady’s fashion. The Tang dynasty fashion was creative and expanded the fashion design concept, and has strong impact on the contemporary fashion design.

Influence of linear density of yarn on weft velocity and weft status of Dornier air-jet loom

ZHU Wen-Jing, TIAN Wei, ZHANG Hui-Fang, ZHU Cheng-Yan

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  121-125. 

Abstract ( 1052 )   PDF (1015KB) ( 663 )   Save

Related Articles | Metrics

In order to discuss the relationship between linear density of yarn and weft insertion flying state on Dornier air-jet loom, and provide technological base to optimize the process of weft insertion , this paper used Dornier AWV8/S air-jet looms as the experimental platform and the actual weft insertion flying state of Weft slot in the reed was recorded through a high-speed camera system. Then the professional image analysis software- Image pro-plus 6.20 was used to analyse the images of the weft insertion flying state. Average speed, acceleration and vertical wave distance of wefts with different linear density were obtained. The results show that the velocity and acceleration of the yarn with the same material texture increase with the increasing of yarn linear density under the same weft insertion condition. And the linear density of yarn is greater，the flight state of the yarn is more stable. Besides, the weft possessed high flight speed and small fluctuations under the 10tex cotton yarn condition. So this air-jet loom has good motion state in such situation.

The choice and dynamic response analysis of control model for the electronic shogging motion on high-speed Warp Knitting Machine

ZHANG Qi, JIANG Gao-Ming, XIA Feng-Lin, QIN Wen, YIN Ming-Yue

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  126-131. 

Abstract ( 796 )   PDF (1392KB) ( 432 )   Save

Related Articles | Metrics

This paper selects no-flat modified trapezoid acceleration curve as the electronic shogging motion control model used in high-speed warp knitting machine, and carries out with a load experiment in KS4 high-speed warp knitting machine. Under different experiment conditions, the real-time dynamic response characteristic of the high-speed shogging guide bar approved the selected acceleration curve is more suitable for the electronic shogging motion control and has a good control effect. Moreover, it is observed that, in order to improve the speed of warp knitting machine effectually, the start angle of electrical shogging should be earlier, the biggest can reach 5°, than mechanical shogging during the overlap; but should be at least 20° later than mechanical shogging during the underlap; and the two stop- shagging angle of overlap and underlap both should be earlier than mechanical stop-shagging angle.

The research of the pricing and ordering strategy on the non-periodic multi-stage with time-varying demand

HU Jue-Liang, XU Yi, HAN Shu-Guang

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  132-137. 

Abstract ( 1564 )   PDF (978KB) ( 443 )   Save

Related Articles | Metrics

In the daily life a larger quantity of seasonal products displayed may attract more customers than that with a smaller quantity of seasonal products. This phenomenon implies that the demand of some products may have a positive correlative with stock level. At the same time a firm can reset its selling price in the different sales stages to promote sales to maximize the profit. This paper researches the pricing and ordering strategy on the non-periodic multi-stage with time-varying demand over a finite planning time, and develops a profit model when the demand is price and stock dependent. The purpose is to maximize the profit by using the optimization to determine the optimal ordering quantity and the optimal prices. Finally an example is adopted to validate the models.

Research on Textiles Innovative Mechanism and Management Strategy

ZHANG Kang-Fu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  138-143. 

Abstract ( 664 )   PDF (1534KB) ( 336 )   Save

Related Articles | Metrics

This article analyzes the construction of innovative management mechanism of textiles from the aspects of discovery, development, diffusion, evaluation, incentive and accountability and points out that the improvement of innovation mechanism and management is a long action. The paper further illustrates management strategy of textiles innovation and development thinking from functional innovation, technological innovation and design innovation. The paper concludes that innovation of textiles is an integrated innovation which needs close cooperation between system and management, design and culture, fashion and aesthetics, development and market and at the functional connection with government, enterprises, universities and individuals. Thus, textiles management can develop into real mechanism so as to realize the aim of innovation management.

Effects of Wool Morphology and Dimensions on Fuzzing and Pilling

YU Wei-Dong, WAN Ai-Lan

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  144-150. 

Abstract ( 947 )   PDF (1525KB) ( 443 )   Save

Related Articles | Metrics

To investigate and relieve the pilling propensity of wool knit fabric, this paper aimed at the morphology and the fixed scope of the dimension involving the appearance shape, spatial structure, morphology and effect of surface, i.e., the length, the diameter, scale pattern of wool fiber surface, crimp, surface friction and rigidity etc of wool fiber and the effect on wool knit fabric was summarized. The researches of previous researchers about morphology and dimension and its effect on fuzzing and pilling of wool fabrics were briefly reviewed, to illustrate the importance of morphology and the dimension of wool fiber, and to prompt that the research on the aspect will contribute to the classic problem of fuzzing and pilling resistance solving and breakout.

Development of heat and moisture transfer model in thermal protective clothing

LU Ye-Hu, LI Jun, WANG Yun-Yi

JOURNAL OF TEXTILE RESEARCH. 2012, 33(1):  151-156. 

Abstract ( 1605 )   PDF (1451KB) ( 1148 )   Save

Related Articles | Metrics

It’s very important to properly evaluate the thermal protective performance of thermal protective clothing for reducing skin burn injury. In this paper, the development of heat and moisture transfer models for thermal protective clothing were reviewed and evaluated, including bio-heat transfer equations and skin burn evaluation models, 1D or 2D heat and moisture transfer models for single layer or multilayer fabrics and full scale 3D garments. The application limitations of these models were discussed, and the predictions of the future studies on heat and moisture transfer model were also carried out. Studies on the heat and moisture transfer model could not only provide proper guidelines for the application of thermal protective clothing so as to reduce skin burn and steam burn, but also improve the test technologies of thermal protective performance and meet the technology requirement of “Safety development” and “public security prevention”.