Table of Content

15 March 2013, Volume 34 Issue 3

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Analysis of sounding absorbing properties of activated carbon fiber materials

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  1-4. 

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In order to study the sound absorbing properties of activated carbon fiber, viscose-based activated carbon fiber felt with different specifications are prepared in the same condition, and the sound absorbing properties of porous materials are tested by employing the transfer function method in the 250-1600Hz middle and low frequencies acoustic range. Thereafter, the impact of such parameters as specific surface area, thickness, density and thickness of airspace on back on sound absorbing properties is analyzed. The result shows that porous materials like activated carbon fiber felt have better sound absorbing properties, sound absorbing properties in middle frequency are superior to those in low frequency; moreover, as specific surface area, thickness, density and thickness of airspace on back increase, sound absorbing properties improve ,but the average sound absorbing coefficient show different degrees of increase. The research can serve as reference for enterprises when developing sound absorbing materials like activated carbon fiber.

 Dynamic viscoelasticity of cellulose diacetate fiber spinning solution

YU QIN

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  5-8. 

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Effects of spinning dope concentration and temperature on dynamic viscoelasticity of cellulose diacetate were studied by Physica MCR101 rheoviscometer. The results demonstrated that, at the same angular frequency, when increasing dope concentration or reducing dope temperature, the storage modulus（G/）, loss modulus （G//）,as well as complex viscosity （η*）appeared incremental trends, but the loss tangent decreased. Meanwhile, it was found that when dope concentration was 27.8% or dope temperature was 59℃,with increasing of angular frequency, G/、and G//was upward, but tanδandη* was downward.

Influence of light excitation on afterglow and thermoluminescence characteristics of luminous fiber

Xue-Feng GUO

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  9-14. 

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In this research, the effect of light excitation conditions on the afterglow and thermoluminescent performance of luminescent polyester fiber have been studied. The afterglow decay laws and thermoluminescent characteristics of the fiber were measured by afterglow tester and TL dosimeter. The results indicated that light excitation conditions had impacts on the initial intensity and decay time of the fiber, which had not showed linear change yet. The higher the excitation intensity is, the faster the decay speed is and the shorter the decay time attaining to the same luminescent illumination is. Increasing the excitation time did not prolong the decay time of materials. The light excitation conditions did not change the trap level depth of SrAl204：Eu2+，Dy3, but increase the electronic concentration of the trap level obviously.The greater the excitation intensity and the longer the excitation time are, the higher the relative intensity of thermoluminescent peak is.

Species identification and odor detection of down

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  15-19. 

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Quality control for feather and down depends mainly on the category and peculiar smell of feather and down. To establish a quick and exact identification for the feather and down category, Near Infrared (NIR) Spectroscopy technology was employed for goose feather and duck feather, goose down and ducks down. Though analyzing the near-infrared diffuse reflection spectrum, the recognition model of feather and down category was set up. At the same time, extracts from the different feather and down were measured by using the Gas chromatography-mass (GC-MS) spectroscopy analysis. The NIR results have shown that the mean spectrum of goose down and duck down was in the 4000 to 12000 cm-1 NIR range, particularly in 8700–8100 cm-1, 7500–6000 cm-1 and 5600–6000 cm-1 region. The similar reflectance further clarified that the downs include the common major chemical components, such as proteins. By normalized and second-derivative treatments, three-D principal component score plot demonstrated that all four feather and down were distinguished because of their chemical and structural difference. These results suggested the feasibility of using near infrared spectroscopy for the identification of the feather and down category. In addition, GC-MS detection indicated that Carboxylic acids and Lactones are main components in the extracts. These data might be helpful to analyze and identify some volatile odor components. This study might provide some new clues for further investigation about down odor ingredients and gas sensor's selection.

Preparation of TiO2 photocatalysts doped with transition metal ions by adsorption phase synthesis

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  20-26. 

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TiO2 photocatalysts doped with different metal ions were prepared by adsorption phase synthesis. Then, photodegradation experiments of methyl-orange were employed to evaluate the influence of different metal ions and different ion quantities on the activity of these photocatalysts. The results from TEM and UV-visible spectra showed that metal ions doping affected little the morphology and light absorbance of TiO2. XRD indicated that the replacement of Ti4+ in TiO2 lattice structure by other metal ions restricted the crystallization of TiO2. The restriction on the crystallization became stronger, when ions radius was close to Ti4+ or quantities of doping ions increased. The results in photodegradation experiments suggested that there was an optimum dopant quantities appeared during preparation of TiO2 doped with Cd2+ and Fe3+. Due to various ion radiuses, the optimum dopant quantities of Cd2+ and Fe3+ were also different. Co2+ doping under low quantities influenced little on the activity of photocatalysts. The activity of photocatalysts was obviously depressed after doping by metal ions under high quantities, since the photo-induced carriers would annihilate easily.

Effect of carboxymethylation on properties of Seacell active fibers

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  27-30. 

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This paper used chloro acetic acid to treat Seacell active fibers. Carboxymethylated Seacell active fibers with high absorbency were obtained by reacting the hydroxyl groups in the fibers with chloro acetic acid. The swelling ratios, silver releasing properties and antimicrobial properties of the fibers before and after treatment were studied. Experimental results showed that the carboxymethylation treatment can effectively increase the absorbency and gelling performances of the fibers., with the swelling ratio for the treated fibers more than 10 times that of the untreated fibers. Because the fibers after the carboxymethylation treatment swell greatly when in contact with water, silver ions in the fibers can be released more easily. Experimental results showed that the modified fibers have better antimicrobial performances than the untreated fibers.

Study on tensile properties of ATY

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  31-34. 

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To figure out ATY’s stretching characters and its featured structure concerned, two kinds of ATY were designed and spun. The result of testing to them showed that, comparing with filaments of similar linear density, ATY suffered obviously both loss of strength and loss of elongation at break, this seemed to be the result of the forming of disordered structure when the flat smooth filaments were texturing. Farther multi-texturing would grow the disorder structure up, thus bigger loss of strength and loss of elongation at break were to be tested out. There was an obvious difference in stretching curve between ATY and ordinary filaments, ATY’s curve showed a straight line all in all, it was not smooth with many zigzag tiny waves, that was the reflecting of featured snarling structure of ATY.

Comprehensive evaluation of properties of new regenerated cellulose fiber yarns

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  35-39. 

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In order to better find out the performance of the new regenerated cellulose fiber yarns and the targeted development of products, pure yarns of six categories of new regenerated cellulose fibers such as lyocell fiber, modal fiber, bamboo pulp fiber, sheng-bast fiber, richcel fiber and outlast modified viscose fiber, and blended yarns with Cotton, Polyester were chosen as the research object. . Six indexes such as breaking tenacity, breaking elongation rate, work of rupture, 3 mm and above hairiness index (harmful hairiness), elastic recovery, Wear-resisting number were tested and evaluated. The result shows that the pure yarns of Lyocell fiber, Modal fiber, and blended yarns of Modal blended with superfine viscose and Richcel fiber, Sheng-bast fiber blended with Bamboo pulp fiber, Polyester fiber have better comprehensive performance, blended yarns of Modal blended with Cotton, pure yarns of Bamboo pulp fiber and blended yarnsof Bamboo pulp fiber blended with Cotton（18.4tex）have general comprehensive performance, pure cotton yarns, Bamboo pulp fiber blended with Cotton（14.8tex）blended yarns, outlast modified viscose fiber and various blended yarns have poor comprehensive performance. The suggestion of product development and production - processing was proposed.

Lifetime prediction of woven pure cotton fabric

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  40-43. 

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Cotton woven fabric was treated on three condition, placing in laboratory, irradiating with 8 UVB-313 UV lamp and soaking under 1.25m for different time, and the performance of tensile breaking strength and wrinkle resistance were tested. The results shows that, the tensile breaking strength and wrinkle resistance of cotton woven fabrics which was placed in the laboratory for some time steady slowly decline; ultraviolet radiation has a greatly influence on the wrinkle resistance performance, water has a greater impact on the tensile strength. The microorganisms in water have a acceleration effect on the fabric ageing. The lifetime prediction equation are proposed for outdoor air and warehouse storage of cotton woven fabric.

Wearability and style of knitted high-twist mulberry silk fabrics

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  44-49. 

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In order to improve the common mulberry silk knitted fabric's wearing performance, we apply a method of using high-twist mulberry silk to give the fabric better properties in anti-crease, shape retention and durability. Based on the experiments of different twist silk knitted fabrics on mechanical performance, appearance and the evaluation of fabric handling, systematic analysis investigates the high-twist knitted fabric’s properties and handling. By using KES instruments,16 mechanics indexes can be tested. Meanwhile the HV value of the fabrics can be work out to evaluate the comprehensive performance of the high-twist mulberry silk knitted fabric handling.The experiment shows that the high-twist mulberry silk knitted fabric has better performance and it expands the mulberry silk knitted fabric's application fields.

 Evaluation of stain release rating based on image analysis

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  50-54. 

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In order to evaluate the stain release grade after washing objectively, a method based on image analysis is proposed, and then the feasibility of the computer vision evaluation for stain release with washing machine is discussed in this paper. Firstly, the images of the different stain release grades of the AATCC130 standard replicas is captured by scanner, then the regression analysis about the relationship between stain intensity of the stain region and its grade is carried out. Secondly, the Intensity-Grade equation is fit by using least square method to calculate the stain grade of all the test samples after washing with different times. The research results showed, increasing grade 0.5, grade 1.5 and grade 3.5 based on 5grades evaluation of AATCC 130 standard, the modified 8 grades evaluation is more reasonable. Compared with the manual evaluation, the evaluation of stain release grade based on image analysis is much more accurate and objective.

Factors influencing properties of flame retardant needle-punched nonwoven for automobile interiors

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  55-58. 

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In order to develop fire retarded interior needle-punched nonwoven used for automobile, fire retarded polyester fibers and thermal plastic PP/PE fibers were selected to manufacture the fire retarded needle-punched nonwoven by the needle-punched process and calendar process. The stiffness, permeability, mechanical properties, flammability and limited oxygen index of the neddle-punched nonwoven were all tested respectively, and the factors that affect those properties were analysized. The results show that with the surface density of the needle-punched nonwoven increasing, the stiffness, mechanical properties and fire retardance all increase correspondingly. And the calendar finishing make the stiffness, mechanical property and flame retardance of the needle-punched nonwoven improving, while the permeability decreases.

Study on preparation process of 3-D sandwich structures of warp knitting reinforced materials

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  59-65. 

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The study on 3-D glass fiber sand-wich structures of warp knitting fabric based on the traditional warp knitting, including the study on the selection of raw materials of glass fiber ,fabric structure design, the weaving machine test and etc. The results show that optimize design of warp knitting fabric structure, select a smaller fineness, use lesser twist glass fiber yarn and in weaving process take proper lubrication processing for glass fiber, which can greatly reduce glass fiber for brittleness, electrostatic and easy to hook hair which cause of the yarn breakage. At the same time, choose woven knitting elements configuration, optimize the knitting shape, reasonable adjustment of the configuration parameters between stretch and warp, choose larger force angle, which can better improve the glass fiber woven performance, improve the quality shaping of 3-D sand-wich structures warp knitting, and make a value reference for the practical production.

Visible-light photocatalytic decolorization of dye using urea doped TiO2

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  66-69. 

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The photocatalysis N/TiO2 doped with different amount of urea was prepared by sol-gel method. Doped urea has little impact on the mean particle size which is about 30-50nm. The doping of urea doesn’t make the absorption threshold wavelength have an obvious red-shift. However, it leads to an increase in optical absorption intensity in the visible-light region. FI-IR spectra indicate that urea involves in the hydrolysis process of tetrabutyl titanate and forms a new covalent bond with TiO2 0.01% and 0.1% doped urea can increase visible-light photoactivity of the catalyst. The activity decreases as the doping amount continues to increase. The high initial concentration of the dye solution results in a decrease in the decolorization ratio. 0.01% N/TiO2 decolors methylene blue solution (4mg/L) under visible light and the performance of 92.8% for color removal reaches.

Effect of solute from wool on properties of potassium dichromate

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  70-75. 

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The solute of the wool in heating process was researched. Then, the property of the solute was discussed and the influence of the solute to the property of potassium dichromate in the aqueous solution and to the adsorption between potassium dichromate and the wool fabric were researched. The results showed that the solute was soluble protein. With the existing of the soluble protein, the CrⅥ in the potassium dichromate was transformed into CrⅢ and because of the little substantively of the CrⅢ to wool, the chrome content was increased in the residual liquid of the dying process with acid mordant dye. So the research was significant to study the reason of chromium pollution in the dying process with acid media dye.

Preparation and application of durable non-formaldehyde flame retardants for cotton

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  76-81. 

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An oligomeric phosphate ester non-formaldehyde flame retardant containing hydroxyl was synthesized by DMMP and glycol, and its structure was charactered by IR、1H-NMR and 31P-NMR. After discussing the reaction conditions, we got the optimal synthesis process. The cotton fabric was finished by the flame retardant and the process was optimized by exploreing the amount of flame retardant and crosslinker and the curing time. TGA showed that the main pyrolysis temperature of cotton after being finished by flame retardant declined about 50℃, and the amount of residue doubled after being burned. It proved that the fabric was difficult to burn. SEM showed that when the cotton fabric without flame retardant finishing burned, its carbon layer collapsed. On the contrary, the flame retardant cotton kept the original fibroid conformation and had a good flame resistance. After 12 times of washing, the flame retardant cotton was still up to GB B2 and showed a good washing fastness.

Preparation of highly hydrophilic polyester fabrics via UV radiation/nano-TiO₂modification

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  82-86. 

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Polyester has properties of wash and wear, but a low wettability. The results showed that the super-hydrophobicity of polyester fabrics were quickly transformed to super-hydrophilic fabrics via UV radiation/nano- TiO2 .At the concentration 40g/L of the nano-TiO2 and UV irradiation 60min,the water contact angle of the super-hydrophobicity of polyester fabrics could decrease to zero in 4.11 second. The result of SEM testified that the surface of polyester fiber was rough and has another material; Reflection ultraviolet spectrum excluded the possibility that the nano-TiO2 adhered to the polyester fiber; Infrared spectrum suggested the surface of polyester fiber was oxygenated by air oxygen; X-ray diffraction showed that the crystallinity of polyester fabrics decreased a little; DSC showed that the thermal stability of the polyester fabric increased. The whiteness and rigidity of modified polyester fabrics kept well, and the resilience of fabrics increased a little. This modification technology is not only simple, and has a good effect, but also a green modified method, and has good applications.

Synthesis and application of environmentally friendly modifier for heat transfer printing of cotton fabrics

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  87-92. 

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Modifier for heat transfer printing on cotton fabrics was prepared by semi-continuous emulsion polymerization process. The relationship between copolymer composition and color yield of printing products were explored, the effects of the different crosslinking monomers on properties of latex film, K/S value and the color fastness of printing products were studied. The results showed that the styrene (St) and acrylonitrile (AN) had significant impact on the K/S value of printing products. The satisfactory color depth and brilliance of printing products can be obtained when the amount of styrene and acrylonitrile were 30% and 5% respectively. The crosslinking monomer of polyethylene glycol (200) dimethyl acrylate (PEG (200) DMA) can be used as an ideal formaldehyde-free crosslinker for transfer printing modifier, and when the crosslinking monomer was 3%, the latex film presented lower dissolve-loss rate, superior breaking tenacity and elongation, and the printing products had excellent color fastness. The modified fabric was transfer printed with disperse red dye. The performance of printing products conform to the A grade of GB18401-2010 《National general safety technical code for textile products》.

Preparation and printing properties of acrylic acid grafted starch

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  93-97. 

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Acrylic acid (AA) monomer was used to graft corn starch with acidolysis. It were discussed the properties of grafted products including water-retention property, the value of PVID and the graft rate, which were influenced by the ratio of acrylic acid monomer and corn starch left radicals (AGU), the value of acrylic acid monomer pH, the dosage of initiator, the reaction time and temperature, and grafted products were characterized using infrared spectroscopy (FTIR). The optimization graft process was acquired as follows: the ratio of n(AA):n(AGU)=2:1, the value of acrylic acid monomer pH was 6, the initiator ratio of n(H2O2)/n(FeSO4)=1.98,grafting at 50℃ for 3h. The graft rate of grafted product was 5.14%, and content of carboxyl was 4.02%. The water-retention property of grafted product was 10.5 mm, the value of PVID was 0.34. The properties of grafted product which could be used for printing paste was similar to sodium alginate.

Study on thermal hazard of dimethylacetamide(DMAc)

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  98-101. 

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The thermal decomposition of DMAc was studied by C80 Calorimetry in order to investigate the thermal stability and themal safety of DMAc. The characteristic curves and experimental data of a decomposition were obtained. The kinetics parameters including the activation energy, preexponential factor and reaction enthalpy were calculated by the thermal kinetics analysis method.Meanwhile,based on these kinetic parameters,the self-accelerating decomposition temperature(SADT) was calculated and the thermal safety on DMAc was evaluated. The results showed that self-exothermic decomposition reaction occurred in the air atmosphere. The heat of reaction was 32KJ/Kg. The activation energy was 178.1KJ/mol. The SADT was calculated according to the Sememnov model, and its value was 93.7℃. DMAc has a larger thermal hazard. In the using and storage process,the temperature rising should be prevented, or else, the explosion accident of the DMAc will be initiated by self-exothermic decomposition reaction.

Analysis of structure conversion of dress back's surplus value based on basic pattern

Li-Xin ZHUANG

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  102-108. 

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Starting from the back surplus value forming of the dress basic pattern,many kinds of methods of handling the back surplus value by using pattern design, clothing craftsmanship and fabric performance are analyzed. Structure handling of the dress back surplus value is supposed to use the explicit and direct methods of dart, split line and wrinkle structure handling as the foundation, the viewpoint carring on the multi-ways' surplus value displacement, surplus value remove and surplus value conversion method that combined with the indirect and implicit methods of fabric remodel and technology handling through the synthesis consideration was proposed.,which provide theory basis and the practice instruction for promoting scientific and rationality of the women's wear structural design and promulgating further the clothing structural design rule.

Folk Yunjian in South Shandong and its workmanship

Shan-Shan WANG

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  109-115. 

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Yunjian is important Clothing Accessories in the folk of China .Which is the key element to study Chinese ancient women in their social status and aesthetic culture. That has typical symbol with a high value for study. This paper was writed using the method of the field survey ,combining the field trips with production practice and recorded a typical Yunjian of sewing process in southern of Shandong by the camera . From the stage of preparing, sewing and finishing of all the process, included the steps of making the Quezi，painting pattern, cut the Quezi, putting cloth, hemming sides, sewing the fine cloth, embroidery, sewing lining ,series, and sewing collar . From that to conclude the technological craftsmanship during making and to analyze the artistic of the technology , skills and adornment which implied in artistic level.

Design of non-contact rotational temperature transmitter for heated drawing roller

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  116-120. 

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Measuring accuracy of temperature on the surface of heated drawing roller affects directly control accuracy of the system, so rotational temperature transmitter was designed to solve the problem on accurate temperature measurement when roller was spinning and electromagnetic interference was very serious. The equipment used inductive coupled power transfer technology to supply non-contact power for its rotating part. It used C8051F microcomputer integrated analog-to-digital converter to complete temperature acquisition and treatment, and used infrared technology to solve the problem on data transmission of rotating part and anti-interference. The software design of transmitter was with the sliding window filter for interference suppression and with the method of piecewise linear interpolation for improving measurement accuracy. It is proved that when the roller is spinning at the speed of 8000 rpm, non-contact power and infrared transmission work stably and the measurement accuracy can reach 0.1 degrees Celsius. Experiment results over three months show that stability and measuring accuracy of the transmitter have reached the design requirements.

Research on dynamic variable structure control strategy for high-speed electronic shogging motion on warp knitting machine

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  121-126. 

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Based on the position control servo system of higher precision but action response is slow, based on the speed control servo system response performance is good but easy to produce position overshoot positioning accuracy is poor. According to the single control structure is difficult to meet the requirements of high speed and high precision electronic shogging control on warp knitting machine, this paper proposes a kind of variable structure control strategy, that is, according to the produce speed and shogging number, making use of high frequency speed control response characteristics to start comb, and position control of high precision positioning properties to stop comb, combining and switching the speed control and position control real-time in one shogging movement, and, exchanging the quick adjustment of motor speed Far from slot needle for subsequent short position setting time, the dynamic real-time variable structure control can ensure a system for the rapid response and precise positioning synchronous. Through written validation test algorithm in DSP system, the dynamic variable structure control strategy can well improve the control performance of high-speed electronic shogging on warp knitting machine.

Design of automatic fundamental flat knit knitting control system of flat knitting machine

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  127-131. 

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According to the working principle of the takedown comb control system and the control requirements of takedown comb knitting running for the computerized flatting machine，a design method on the automatic takedown comb control system of Flat Knitting Machine based on the cortex-M3 core ARM processor was proposed. And the design of hardware and software for the system was discussed in detail. Focusing on the control features of sissors and clip driven by the step motor，the conception of Multi-segment control and a discrete-linear rising and reducing speeds control idea for the step motor were revealed. Additionally, the changing torque control on the lifting torque motor was realized, meeting the different driving requirements of the AC torque motor on the each knitting stage. The running result indicated that, the control system conforms to the knitting control requirements of the takedown comb system, and it operates stable, showing a highly application value.

Contour extraction from garment images with printing patterns

Li-Xin AN

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  132-136. 

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Introducing the concepts of contour error and branch point, a new approach was put forward and applied to contour extraction from a certain garment images with printing patterns. Firstly, the original contour is extracted based on the morphology, and then the original contour is divided into several single-value branches. Finally, the texture noises are eliminated based on the contour error computation. The results indicated that original contour extraction algorithm based on the morphology can effectively remove image pixels within the garment, the shadow and watermark outside. The contour error computation technology can effectively identify the texture noise data in the branch and repair the effects of printing pattern to garment contour. Meanwhile contrasting to other methods, the proposed algorithm can realize the contour extraction in high efficiency.

Cooperative advertising for garment supply chain in dual channel system

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  137-142. 

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Aimed at the characteristics of joining and direct dual channel in fashion enterprises, a cooperative advertising game model is built under this dual channel. The optimal cooperative advertising strategies, optimal advertising subsidies proportion and optimal system gains are compared under centralized decision and decentralized decision, and the effect of relevant parameters on cooperative advertising decisions is also analyzed. The results show that, the cooperative advertising equilibrium solution exits and unique under two decisions，and the situation under centralized decision is superior to decentralized decision, then a Pareto optimal solution is got to achieve supply chain coordination with Nash bargaining model. Finally, a numerical example is carried out to demonstrate the conclusions.

Empirical analysis of effect of scientific and texhnological advancement on export of textiles of China

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  143-146. 

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In accordance with relevant theories that explain the connection between scientific advancement and economic growth, this paper bases itself on C-D production function and Solow’s residual measurement, analyses the contribution rate of science and technology to China’s textile industry. Using Grey Relative Analysis, this paper also estimates the variables of capital output elasticity and labor output elasticity, and calculated the contribution rate of science and technology to China’s textile industry from 2001 to 2010. This paper sets an exponential regression model for the two variables by looking into the relationship between the contribution rate of science and textile export growth, with the farmer as an independent variable and the latter a dependent one. A significance test of this model indicates an apparent correlation between the contribution rate of science and the growth rate of China’s textile products---scientific and technological advancement plays an important role in promoting the export of China’s textile products.

Visualization simulation technolohy of cloth deformation based on mass-spring model and its prospect

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  147-153. 

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Simulation technology of cloth deformation based on mass spring model is the research focus in the field of current fabric simulation. Several typical models of the simulation technology of cloth deformation was firstly introduced briefly. The mass spring model put forward by Provot is emphatically elaborated. At present the physically-based approach is considered by many researchers as the most important one. In addition, Some detailed analyses on optimizing model parameters, improving stability of modeling system and mitigating hyperelastic phenomenon are made for the optimization methods of mass-spring model. These optimization methods are compared and their advantages and disadvantages are pointed out, and the simulation thought of combination between computer vision technology and fabric physical model. Lastly, the prospect of its future research direction was lastly viewed. It is considered that the mass spring model should be penetrated into building simulation effect evaluation, improving the overall performance of the model and application fields, in order to assist producters and designers to select and use fabrics reasonably.

Application of flame manikin in thermal protective clothing research

JOURNAL OF TEXTILE RESEARCH. 2013, 34(3):  154-160. 

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Thermal protective performance is an important function of personal protective clothing. As the worldwide accepted special instrument to quantitatively evaluate the flame retardant property of protective equipment, flame manikin plays an important role in clothing thermal protection research. By reviewing the research achievement both at home and abroad, this paper introduced the work principle of flame manikin, the flame manikin development history as well as the characteristic and innovation of Donghua flame testing manikin,investigated the application progress of flame manikin in clothing thermal protection research mainly from four aspects ,that is, the simulation of different fire conditions, evaluation and selection of flame retardant fabric, the effect of garment style and structure on thermal protective performance , the heat transfer mechanism research on flame retardant protective clothing. The application prospect of flame manikin was analyzed and predicted at last.