Table of Content

15 June 2012, Volume 33 Issue 6

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Extinction properties of spherical hollow particles in visible wavelength range

ZHANG Na, WANG Ni, SHI Mei-Wu, YU Jian-Yong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  1-5. 

Abstract ( 1054 )   PDF (1207KB) ( 412 )   Save

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According to the Aden - Kerker theory, the scattering properties of spherical hollow particles were studied in this paper. By using Matlab program, the visible extinction performance of the spherical hollow particles was numerical simulated and analyzed in details .The influences of outer refractive index, scale parameter and wall thickness on extinction performance were studied .The results showed that with the increase of outer relative refractive index, the extinction performance first decreased and then improved; with the increase of particle size parameter, the extinction coefficient presented up and down shocks with a series of maximum values and minimum values, and then the amplitudes weakened near to the number 2 ; With the decrease of wall thickness, the extinction performance first increased and then decreased .Using different combinations of particle diameter and wall thickness , a specific extinction effect could be achieved with better extinction performance generally than solid particles in practical application.

Electric field simulaition and stretching process analysis of double-nozzle electrospinning with auxiliary electrode

ZHU Wen-Bin, SHI Jing-Jing, YANG EnLong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  6-9. 

Abstract ( 1606 )   PDF (1051KB) ( 490 )   Save

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In general, two jets bend outward because adjacent electric fields interfere with the other in the double-needle electrospinning process. Therefore, the continuity of electrospinning process and the evenness of fiber web decrease. This paper focuses on dual-nozzle electrospinning device, and two in the spinning process the fiber spray nozzle with the same charge as the mutually exclusive, exacerbated the instability of the jet, making the fiber web distribution uneven. On this basis, we designed a variety of auxiliary electrodes to stabilize the jet, uniform fiber network. By Ansoft Maxwell 3D electromagnetic field analysis software for modeling and analysis to explain why the auxiliary electrode can play such a role for the further development of electrospinning.

Testing and analyzing of structure and properties of metachromatic flat polyester filaments

LOU Li-Qin, ZHAN Hai-Hua

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  10-14. 

Abstract ( 849 )   PDF (1262KB) ( 370 )   Save

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In order to further optimize spinning technology and improve the quality of metachromatic flat polyester filament, three different specs of metachromatic flat polyester filaments were designed , and the structure and properties of metachromatic flat and flat polyester filaments were tested and analysed. The results showed that: The cross section of metachromatic flat polyester filament is nonuniform size and irregular rectangle, and the edges is the elliptic shape. The distribution of thick and thin is the main factor to influence yarn properties. The more thick part percentage is, the greater the yarn breaking elongation, moisture regain, boiling shrinkage and the dyeing-uptake have, and the smaller the breaking strength has. The dry heat shrinkage has less dependance on time and greater influence on temperature. Especially, the shrinkage rate of the metachromatic flat filament wes significantly increased with the increase of the temperature.

Comparative analysis of impact resistance between unidirectional composite and pure resin material

SONG Xiao-Bang, JIN Li-Min, WANG Chun-Xia

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  15-19. 

Abstract ( 1039 )   PDF (1089KB) ( 508 )   Save

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Incorporated with finite element software package ABAQUS to calculate the impact responses of unidirectional composite in yarn and resin levels. The impact resistance properties and main energy absorption mechanisms of unidirectional composite are illustrated by analyzing the bullet velocity-time curve, impact stress distribution in different components of unidirectional composite which compared with those of pure resin material. The impact energy was absorbed by the unidirectional composite during a short period of time; this induces a better energy absorption performance for the unidirectional composite. In addition, the peak value of stress in the yarn is greater than that in the resin. It is concluded that the impact energy is mainly absorbed by the reinforcement of yarns in the unidirectional composite. This leads to a better impact resistance performance for the unidirectional composite than the pure resin material.

Three dimensional flow patterns in yarn duct of interlacers with various cross-sectional shapes

QIU Hua, LIU Yuan-Yuan, YAN Jing, LIU Li-Qun, GE Ming-Qiao

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  20-25. 

Abstract ( 989 )   PDF (1142KB) ( 328 )   Save

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The aim of present work is to determine the flow characteristics of compressible airflow in the yarn duct of interlacer by numerical simulations to make the effects of cross-sectional shapes of yarn duct on the performance of interlacers. CFD (Computational Fluid Dynamics) software package ANSYS CFX is used to calculate flow patterns in yarn duct. Relations between the performance of the interlacer and distribution of velocity vector, airflow speed and particle trace of flow were clarified to propose the knowledge of design better interlacers. From the results of calculation, if vortices on the middle cross-section of the yarn duct make filaments revolve continuously, large number of tangles can be achieved. The velocity at the central point of the yarn duct decides the sufficiently opening of the filaments. However, too higher velocity makes filaments stay on the wall, hindering them from tangling with each other.

Discussion on pattern characteristics of Nishijin weaving in Japan

ZHENG Chao-Hui

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  26-29. 

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Abstract: Nishijin weaving, one of the most representative brands among the traditional silk weavings in Japan, is researched. After its origin and prosperity are expounded, its process flows are illustrated. According to its representative subjects and characteristics of patterns, the symbol signification, sensibility and appeal of patterns are analyzed on the basis of absorbing patterns from abroad, integrating smoothly into self-culture and folk custom. The result denotes that natural symbols and elements are extracted, condensed, summarized and reorganized. Their aesthetic characteristics of the Nishijin weaving patterns are promoted, and their aesthetic consciousness of Japanese reflected. It is worth learning that the traditional patterns and fabrics in Nishijin weaving are expanded and applied in fashion, and the sustainable development of its brand is promoted.

Comparison of tensile properties of co-woven-knitted fabric and multi-layered biaxial weft knitted fabric

XU Yan-Hua, YUAN Xin-Lin

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  30-34. 

Abstract ( 1278 )   PDF (1311KB) ( 558 )   Save

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Co-woven-knitted (CWK) fabric and Multi-layered Biaxial Weft knitted (MBWK) fabric are produced with the same yarns and loop length, using glass filaments as inserted yarns and high tenacity polyester as stitch yarn. Tensile tests are carried out in the wale and course directions. The mechanical properties of the fabric are investigated by analyzing the stress-strain curves. The strength comparison is made between the CWK fabric and MBWK fabric. The results revealed that inserted yarns bear high load in low elongation to failure, and then, the knitted structure commits the low load in high elongation until it damage. Interwoven between warp and weft yarns leads to large buckling of them, the strength of the CWK fabric is lower than the MBWK fabric, but the interwoven makes knitting yarn in a station of pre-draft, reflecting the knitting yarn being a the role of better bundled on warp and weft.

Design and simulation study of axial warp-knitted fabrics

LI Xiu-Li, CONG Hong-Lian

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  35-40. 

Abstract ( 1281 )   PDF (1638KB) ( 547 )   Save

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In order to solve the problem of axial warp-knitted fabrics in computer aided design and realize the fast design, CAD design and simulation function of axial warp-knitted fabrics is studied in this paper. On that basis the production process about axial warp-knitted fabrics is understood, the structure size of axial warp-knitted fabrics is measured, and the design models about this type fabrics are built, including the ground structure model and weft structure model; then the glass fiber yarn and loop simulation models of axial warp-knitted fabric about 2 D and 3 D are studied and built. With visual c++ for development tools and combined with OpenGL graphics libraries, the CAD design and simulation functions of axial warp-knitted fabric are finally realized in the WKCAD4.0 system.

Keratin extraction from wool and its film forming property

XU Heng-Xing, SHI Ji-Hua, ZHOU Ao-Jia, YAN Ke-Lu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  41-47. 

Abstract ( 1304 )   PDF (1790KB) ( 727 )   Save

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Abstract ： In this study, keratin was extracted from wool by an oxidation-reduction two-bath method. The soluble ratio of wool was 87%，and the molecular weight distribution of the extracted keratin was 45-60 kDa. The results of FTIR and TGA showed that the functional groups of the keratin are nearly the same as wool, furthermore, the thermal stability was not observed to change much. Hybrid films with better mechanical properties were prepared by adding chitosan into keratin with different proportions. It can be seen from contact angle measurement and DMA analysis that the break strength increased and hydrophilicity decreased with an increase of chitosan contents in the hybrid films.

Study on droplets formation process of additives/capsulated super-fine disperse dye

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

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  48-52. 

Abstract ( 763 )   PDF (1449KB) ( 431 )   Save

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The capsulated super-fine disperse dye was prepared by phase separation technique with styrene maleic copolymer. The effects of glycerin and Tween 80 content on colloidal properties of super-fine disperse dye were investigated, and then discussing the effect factors of droplets formation process based on suitable viscosity, surface tension and certain stability. The FTIR and TEM results showed that capsulated super-fine disperse dye was prepared successfully. Capsulated super-fine disperse dye and glycerin could improve viscosity and Tween 80 could greatly affect surface tension. Besides, they could affect storage stability of the dispersion. Either viscosity increasing or surface tension reducing made the droplets break easily. In addition, decreasing surface tension could lead to droplet’s maximum volume smaller. Viscosity might be the main factor of “satellite droplet” why formed. Especially, when viscosity was lower the “satellite droplet” was more obvious, coinciding with the lord droplets more difficultly.

Application of illumination correction to measurement of color difference of dyed products based on spherical harmonic theory

ZHANG Jian-Xin, CHANG Wei, YU Li-Guo

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  53-58. 

Abstract ( 919 )   PDF (2090KB) ( 369 )   Save

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Shading measurement of dyeing products is the key to quality assessment. Different illuminants will lead to different color evaluation errors. In this paper we introduce a new illumination correction algorithm based on spherical harmonic theory into the color difference detection of dyeing products. Firstly, the collected images under the same light source are computed using the color constancy algorithm; then the R/S values of the dyeing products are measured under different illuminants and the spectral energy estimation and illumination compensation are done based on spherical harmonic theory; Finally, two shading evaluation formulas CMC(2:1) and CIE1976L*a*b* commonly used in textile industry are adopted to analyze the image processing effects of the above two algorithms. Experimental results show that whiling being used in color difference, the proposed method can reduce the evaluation errors caused by inconsistent illuminations and improve the integrity of quality evaluation of the dyeing products through achieving the mutual conversion of images between light sources.

Dyeing properties of methacrylamide-grafted silk with reactive dyes

QIAN Hong-Fei, FANG Shuai-Jun, LIU Jiang-Ying, TU Hai-Zhen

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  59-65. 

Abstract ( 1096 )   PDF (1519KB) ( 385 )   Save

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In order to understand the dyeing properties of grafted silk with methacrylamide. The authors analyzed the structure of both the grafted and non-grafted silk by means of the three methods such as TG/DTA, FT-IR spectroscopy and X-ray diffraction. On these bases, their dyeing properties of reactive dyes including mainly the dyeing fixation rate curve and build up property was investigated in detail, and compared with each other. The results indicated that the graft treatment remained the crystalline and molecular structure of silk fibroin unchanged, but the crystallinity of fiber, adsorption and the build up property of reactive dyes was also reduced after weighting.

Effects of different additives on waterproof and moisture permeable coating

WANG Zhi-Jia, CHEN Ying

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  66-70. 

Abstract ( 945 )   PDF (1115KB) ( 399 )   Save

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In order to improve coating properties of Polysulfonamide (PSA)/cotton blend fabric, additives such as carboxymethyl cellulose (CMC) or sodium alginate (ALG) was added into waterborne polyurethane. By comparing and analyzing coating properties such as moisture permeability, water resistance and bending length, CMC was generally superior to ALG in effects. The CMC-containing waterborne polyurethane with adding polyethylene glycol (PEG) could significantly improve moisture permeability and handle of coated fabric. It was found that under the condition of coating agent with 0.25% CMC and 10% PEG, moisture permeability of coated fabrics could be up to 6721.5g/m2.24h, water resistance could be at 5 grade and bending length decreased to be 5.51cm.

Body size classification of female models in Jingsu-Zhejiang based on 3-D body measurement

ZHANG Ning, WANG Hong-Fu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  71-75. 

Abstract ( 2009 )   PDF (1002KB) ( 389 )   Save

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To the problem of the lack of models’ garment size in the state body ,using 3D body measurement techniques to measure 192 , aged between 18 and 24 Jiangsu-Zhejiang female models for 60 indicators measurement ,and use SPSS software for principal component analysis, as well as compress the more than 60 measurements to height, bust, waist, hip circumference, waist high these 5 aspects. Then, it gets the classification number for k-means clustering through stratified cluster analysis method. And by k-means clustering method, we get the Y body models respectively garment sizes standard which the height are amidst 170cm, 175cm, 180cm; Waist high are amidst 109cm, 112cm, 105cm; the bust are amidst 84cm 87cm, 90cm,; Waistline are amidst 62.5cm, 65.5cm ,68.5 cm，respectively ,hip circumference are amidst 90cm, 92.5 cm,95cm .

Study on relationships between garment’s distance ease distributions at bust section

ZHANG Ai-Ping, WANG Yun-Yi, YAO Yi

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  76-80. 

Abstract ( 1160 )   PDF (1204KB) ( 465 )   Save

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The distribution relationship between the distance ease and the ease allowance in the bust section of different angles was expounded. The 3D-scanner was used to measure the standard body wearing garments of various sizes. And the distance eases of different angles in the bust section were provided. By area of chart analysis, correlation analysis and regression analysis, the main contents were as follows: The distance ease focus on 165°~195° (side) of the bust section, and the distance ease between 90°~150°and 210°~240°were relatively few; The distance ease between 90°and 225°of the bust section were high correlated with the average distance ease at the 0.01 level (bilateral). The distance ease of 240° in the bust section was high correlated with the average distance ease at the 0.5 level (bilateral). The distance ease between 255°and 270°of the bust section were low correlated with the average distance ease. The goodness of fit of the regression equation was good, and the coefficient of determination（R2） in regression equation of 180° is 0.9652.

Study on stitches of Suzhou embroidery technique in folk pouches

LI Di, ZHANG Jing-Qiong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  81-87. 

Abstract ( 909 )   PDF (1961KB) ( 695 )   Save

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Based on the embroidery-style pouch in the Folk Costume Museum of Jiangnan University , Shanghai "Feng Ge Tang" Museum and Nantong simulation embroidery Institute, we found that ten stitches are commonly used in fork pouches：parallel satin stitch,couching stitch,outline stitch ,etc. Applying ten method which combines constitution way and performance result, we research the embroidery stitch in pouches by dividing them into flat embroidery, embroidered stripes and features needle. Lying on the theory we got from studing the steps and the concrete application of the needle in the fork pouches, We explored the characteristics and implications of the embroidery stitch in them：the pouch is small, but it shows the charm of "Su Style" with small see greatly. Although the type of stitches is limited, the producers make the order and change to perfect unity with unique skills. Though the acupuncture have certain “program”, it became an important carrier of emotion using an object to express personality. The material, although common, was used according to circumstances, and its features were exerted to maximize.

Q₁₅-based flat knitting machine’s needle pwsiton tracking algorithm

ZHANG Hua, HU Xu-Dong, PENG Lai-Hu, ZHANG Jian-Yi

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  88-91. 

Abstract ( 658 )   PDF (886KB) ( 391 )   Save

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It analyzes two methods of needle position tracking of flat knitting machine. The algorithm of needle position tracking of flat knitting machine has been presented in this paper, which is based on quadrature encoding signals feeding back from AC servo motor. The algorithm, based on Q15, has been successfully applied to convert floating-point into fixed-point. A hardware experimental platform of flat knitting machines has been built. As an experimental result, the average time consumption of computing needle position tracking with Q15 is 141.05ns. It greatly increased computing efficient with 65.43% comparing with the traditional algorithm. The algorithm can be applied to other knitting machine’s needle position tracking, such as socks knitting machine, circular knitting machine, underwear machine etc.

Dynamic analysis of warp knitting swing machine guide bar swing mechanism based on flexible multi-body system

LIU Xin, HU Xu-Dong, CHEN Hong-Li

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  92-96. 

Abstract ( 828 )   PDF (1172KB) ( 580 )   Save

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As one of the key mechanisms, guide bar driving mechanism directly impact the running performance of warp knitting machine on high-speed. The paper analyzes the changing situation of constraining force of the guide bar rotating shaft on low-speed, and establishes the flexible multi-body dynamic model of guide bar driving mechanism of warp knitting machine in virtue of the analysis software of ADAMS and Nastran, reaching conclusion that the changing level of allowed shogging angle of guide bar on high-speed; the deviation level and changing tendency of Guide needle pinpoint position on each different speed; the changing tendency and the reasons of vibration situation of guide bar driving mechanism.

Textile printing image segmentation based on FCM

JING Jun-Feng, MENG Tai, LI Peng-Fei

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  97-100. 

Abstract ( 781 )   PDF (971KB) ( 391 )   Save

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Focus on the key problem of textile printing precision measurement, the paper is devoted to studying an effective method for image segmentation of textile printing pattern. To improve the anti－noise robustness for FCM method, this paper proposes a method to change the distance metric and modify the membership function in the objective function. In order to ensure the effectiveness and accuracy of FCM algorithm, the parameter selection and algorithm structure are deeply researched. The self-adaptive parameters initialization method and FCM algorithm correction method are investigated by experiments. Finally, the results of image segmentation of textile printing pattern by using this algorithm are demonstrated. The experimental results show that the algorithm has good effect on image segmentation of textile printing pattern, and the interference caused by light and fabric texture has certain inhibition.

Man-bour quota determination method for garment production of multi-variety in small batch

YE Ning, YAN Yu-Xiu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  101-106. 

Abstract ( 1011 )   PDF (1244KB) ( 659 )   Save

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Aiming at the outstanding issues of production quota management in the mode of the multi-species and small batches garment production, the thesis puts forward a new method which combines the standard data with the learning curve. As to the standard data method, firstly, a database of standard time can be established according to different working procedures of the work categories, operating units, job content, and standard time. Next, while producing new style, clothes can be decomposed into different working procedures according to pattern, finding appropriate data to synthesize the standard time. The method of learning curve is to determine the volume coefficient by learning curves fitting of pipeline. Depending on the volume conditions, correction of standard working hours is done according to the volume coefficient, so as to meet the needs of dynamic management of working hours. The application of the combination of the two methods is proved practical through enterprise examples, beneficial for enterprises to achieve rapid response and accurate management.

Structures and properties of intramolecular flame-retarded PET fibers

MA Jing-Hong, GONG Jing-Hua, YANG Shu-Guang, XU Jian

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  107-110. 

Abstract ( 1274 )   PDF (883KB) ( 486 )   Save

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In this paper, intramolecular flame-retarded PET resins were prepared via copolymerization reaction by using reactive halogen-free ?ame retardant CEPPA as a third monomer. Then flame-retarded PET fibers were fabricated by melting spinning process. The phosphorus contents in the flame-retarded PET resins were analyzed by means of elementary analysis and NMR. The results showed that the majority of CEPPA were directly reacted into the PET chains. The crystallization property, dyeing behavior, mechanical property and flame retardation of the flame-retarded PET fibers were also investigated. The results showed that the crystallinity of flame-retarded PET fiber was decreased as increasing the phosphorus content, which led to the improved dyeing properties of the fibers. The dye-uptake of the fiber with disperse dyes at atmosphere pressure and boiling temperature was above 90%. Moreover, the flame- retarded PET fibers exhibit superior ?re resistance. The limiting oxygen index (LOI) value was about 35% and the anti-dripping property was also improved.

Solid-phase polycondensation and melt-spinning of aromatic copolyester

WANG Yan-Ping, XIA Yu-Min, GAN Hai-Xiao, ZHU Wei-Biao, QIN Wei-Min, WANG Yi-Min

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  111-115. 

Abstract ( 1506 )   PDF (1115KB) ( 464 )   Save

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In this article, the solid-state polycondensation (SSP) of aromatic copolyester with low molecular weight was studied to prepare aromatic copolyester fiber with high strength and high modulus. Their rheological properties before and after SSP were analyzed. And the melt-spinning experiments of aromatic copolyester were operated. It is shown that SSP can increase the molecular weight greatly. Rheological analysis showed that the aromatic copolyester melt was a typical non-Newtonian fluid that exhibited shear thinning behavior. The apparent viscosity decreased and non-Newtonian index increased with the increasing of the temperature. The as-spun fiber with sample after SSP had higher strength than one before SSP. SEM images showed that the aromatic copolyester fiber is composed of macrofibril with 5 μm and fibril with 1μm.

Polyimide fiber and its flame retardance

YIN Chao-Qing, XU Yuan, ZHANG Qing-Hua

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  116-120. 

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Abstract Polyimide fibers and their properties were introduced in this review, including fire resistance, good mechanical properties, heat resistance and radiation resistance, especially its inherent fire resistance. To further enhance the thermal stability of polyimide fibers, more attention was recently paid on modification of the fibers. Compared with other fibers on limited oxygen index (LOI) and working temperatures, polyimide fibers exhibit obvious advantages in the field of high temperature protection and filtration, supporting the application of heat-resistant and flame retardant materials.

Current status and developing trend of research on anti-dripping of thermoplastic fibers

ZHU Shi-Feng, SHI Mei-Wu

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  121-124. 

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The progress of anti-dripping research has been introduced and blending, copolymerization, grafting and irradiation crosslinking method are used now to achieve drip-resist effect. Meanwhile, their merit and demerit of these methods are compared, the mechanism of anti-dripping is also analyzed including tacky effect, char-forming and intumescent flame retardant. Irradiation crosslinking is a cold processing technique which owns many advantages such as energy conservation, environment protection and making industrialization easily, also it can form crosslinked structure in the fiber, so irradiation crosslinking will be a potential way for the further investigation and application.

Technology status and development trend of m-aramid fibers

SONG Cui-Yan, SONG Xi-Quan, DENG Zhao-Liang

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  125-128. 

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This overview addressed the commercialization status and the main technical routes of Meta-Aramid, especially summarized the fiber’s properties such as heat and flame resistant, electric insulation, chemical stability and mechanical properties, and the applications like environmental protection, personal protection, technical textiles and electric insulation were also related. Regarding the development direction of meta-aramid fiber, three recommendations were given as follows: low-cost process routes, differentiated products and strengthening the applied technique research . Developing trend of Meta-Aramid were also presented, Expecting to promote the technical developmnet of meta ararmid fiber by strenghthening the applied technique research and further expansion of application fields.

Technology status and development trend of national flame-retardant viscose fibers

XIA Yu-Cong

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  129-135. 

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Abstract : To promote the development of flame-retardant viscose fiber in China，this article describes the development status of China's flame-retardant viscose fiber. The writer analyzes the flame retardant mechanism of viscose fiber from a technical point of view, focuses on describing the production method of flame-retardant viscose fiber and technically, structure, and performance characteristics. At the end of the article, the writer analyzes the main problems of flame-retardant viscose fiber currently existed. Point out that the main problem of China’s flame-retardant viscose fiber is low fiber strength and wet modulus. Application of high wet modulus fibers and new type solvent fiber, to improve the processing of weaving techniques, development of new type biomass fiber and new type nano-scale flame retardants, etc. are required to solve the a.m. problems. And also makes prospects for the future development of flame-retardant viscose fiber in this article.

Structures and properties of flame retardant Vinylons and development trend thereof

GE Wei-Bing, FU Xing-Wei, JIANG Meng-Jin, XU Jian-Jun, YE Guang-Dou

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  136-143. 

Abstract ( 1033 )   PDF (2423KB) ( 489 )   Save

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Vinylons is a synthetic fiber that the aqueous solution of PVA condenses with formaldehyde by wet spinning. Its performance is excellent, especially the vinylons which is prepared by adding boron wet spinning. It has high strength (more than 7.0 cN (dtex)-1), high modulus and strong corrosion resistance. Flame retardant vinylons have both high modulus and flame retardant, which makes it widely used. Therefore the structures and properties of chloro-vinylons, CY841 flame retardant vinylon, high-strength bromine/antimony compound flame retardant vinylon and high-strength halogen-free flame retardant vinylon are introduced in detail. The advantages and disadvantages of the four kinds of fibers are compared through the X-ray diffraction (XRD), scanning electron microscopy (SEM), optical microscope, limit the oxygen index and other test methods. The development trends and application prospect of flame retardant vinylon are also discussed.

Structure and property of high temperature resistant flame-retardant poly(phenylene-1,3,4-oxadiazoles)(POD) fibers

JIA Er-Peng, SHI Mei-Wu, YE Guang-Dou, XU Jian-Jun

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  144-150. 

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Abstract: The development of poly(phenylene-1,3,4-oxadiazoles) (POD) fibers in home and abroad were discussed. The functional monomers containing phosphorus or halogen were copolymerized with POD for improving the cyclization degree and flammability of POD fibers, whose LOI can be up to 30. The coagulating conditions had an influence on the aggregation state, surface and mechanical properties of POD fibers. Sulphuric acid solution of 40~50% concentration is the best coagulating agent. Compared with other heat resistant fibers, POD fibers have a better thermal stability than PPS, Nomex and Tanlon. Besides, the good combination of other performance, such as mechanical properties, chemical resistance and dyeing ability, enhances the application of POD fibers in many fields.

Thermal oxidizing aging properties of modified aromatic polyoxadiazoles fiber

LI Wen-Tao, YAO Shu-Huan, PENG Shu-Ping, WU Meng, ZHANG Chao-Bo, ZHANG Zai-Xing

JOURNAL OF TEXTILE RESEARCH. 2012, 33(6):  151-154. 

Abstract ( 1108 )   PDF (898KB) ( 518 )   Save

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Thermal Oxidizing Aging properties of modified aromatic polyoxadiazoles fiber at 200℃、250℃ and 300℃ were studied by the Thermal Oxidizing Aging method, and then its thermal properties were compared with that of m-aramid fiber and polyimide fiber. The results show that the breaking strength retention of modified aromatic polyoxadiazoles fiber after heat aging of 80 days at 200℃ is near 90%, over 60% after 65 days at 250℃, and more than 70% after 25 days at 300℃. The results also show that the linear density of modified aromatic polyoxadiazoles fiber after thermal oxidizing aging does not change obviously, which declares the excellent dimensional stability of modified aromatic polyoxadiazoles fiber.