bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Negative Pressure on Yarn Quality in Compact Spinning with Inspiratory Groove
Authors: Zhang Xi Chang , Zhang Hai Xia , Cheng Long Di
Published: December 2012

The flow field in condensing zone of compact spinning with inspiratory groove was developed with Fluent 6.3 and the distribution of velocity was analyzed too. Also the effect of negative pressure on the yarn quality was analyzed and the experiment was done to prove the effect of negative pressure on the yarn qualities. The results show that the fiber can not be compacted well when negative pressure is too small, but it will add the energy consumption, attach the fibers firmly to the bottom of the compact groove by the effect of flow field and reduce the fiber migration, cause the fibers to be absorbed from the holes or the holes to be plugged when the negative pressure is too big. Therefore, in order to ensure the fibers being compacted well and reduce the energy consumption, the selection of negative pressure in compact spinning with inspiratory groove should be less than -3000pa.
Comparative Analysis of Fibers for Thermal Protective Clothing
Authors: Liu Shuai , Liu Zheng , Bai Xiu E
Published: December 2012

This paper firstly introduces the performance of some kinds of thermal protective clothing materials, for example, Nomex, Polysulfonamide fiber (PSA), polyphenylene sulfide fiber (PPS) and pre-oxidized fiber. Then mainly states the application status through investigation. According to their merits and demerits, we can improve clothes' comfort and functionality through blending. Finally, we should aim to gain more practical and environmental friendly thermal protective fibers.
Effect of Polyester and Viscose Content on the Performance of Spunlaced Nonwoven Dressings
Authors: Zhou Zheng , Zhang Ru Quan
Published: December 2012

Three kinds of spunlaced nonwoven dressings, which were made in the same process, were chosen with different fiber content. The absorbency rate, water-vapor transmission rate and diffusion area in solution A were measured. The experimental results showed that the viscose content is the key factor in water-vapor transmission rate of Polyester/Viscose spunlaced nonwoven dressings. As the viscose content increased 70% from 30% , the water-vapor transmission rate of the spunlaced nonwoven dressings also increased accordingly. The increase of viscose content is beneficial to spunlace entanglement, and improve the absorption capacity. Conversely, the increase of polyester content goes against the spunlace entanglement, but contributes to the improvement of fluid spreading.
Hairiness Analysis between Solospun and Ring Spun Yarns
Authors: Liu Xin Jin , Su Xu Zhong
Published: December 2012

In this paper, the hairiness relationship between Solospun and Ring Spun yarns is investigated using a geometric method which is different from Cheng et al. It is also analyzed why Solospun yarns have less hairiness than Ring Spun yarns. Then, the relationship between the increase of the substrands number and the decrease of the hairiness during the Solospun is confirmed. Finally, the conclusions of the theoretical analysis are proved by test.
Manufacturing Technique and Property Evaluation of Cotton/Polyester/ Rubber Composite Warp Knit
Authors: Lin Jia Horng , Huang Shih Yu , Yang Hui Yu , Lin Ching Wen , Chen Jin Mao , Lou Ching Wen
Published: December 2012

Cotton fiber is a type of natural fibers. Using natural fibers to fabricate textile can not only decrease the consumption of synthetic fibers, but also reduce the environmental pollution. This study aims to fabricate elastic knitted fabrics and evaluate their properties. Polyester (PET) filaments and rubber threads serve as the warp while cotton yarn serves as the weft for warp knitting. A crochet machine makes the warp and weft into warp knits with desirable stretchability, during which the amount (single/double) and the ply number (1-, 2-, and 3-ply) of the weft are further varied. The resulting warp knits are evaluated for water absorption, air permeability, and mechanical properties. As demonstrated by the experimental results, the warp knits with single 1-ply weft (S1) yield an optimal air permeability of 224.6 cm3/cm2/s and stiffness along the warp direction of 4.74cm. The warp knits with single 2-ply weft (S2) display an optimal tearing strength of 86N while the warp knits with double 3-ply weft (D3/3) has an optimal tensile strength of 708N.
Process Technique and Property Evaluation of Bamboo Charcoal/Polyamide/Stainless Steel Elastic Warp-Knitted Fabrics
Authors: Lin Jia Horng , Huang Yu Tien , Lin Chin Mei , Li Ting Ting , Chen Jin Mao , Lou Ching Wen
Published: December 2012

As improvement of science and technology, the life quality was significantly promoted. And people are more aware of health care. It has been proved that bamboo charcoal owns special properties including air purification, water refining, deodorization, far-infrared radiation, and anion release, thus it is widely applied on textile industry in form of fiber and yarn after mixing with its power. This study aims to seek for the optimal twist number of bamboo charcoal (BC)/Nylon(NY)/ stainless steel(SS) wrap yarn. And then the one or two wrap yarns were fed into crocheting machine to weave BC/NY/SS elastic warp-knitted fabrics with different structures. Afterwards, the far-infrared radiation, anion amount, air permeability were discussed by changes of number of layers. The result shows that, as increasing layers of BC/NY/SS elastic warp-knitted fabrics, the far-infrared radiation and air permeability both decrease; but all the single-layer warp knitted fabric reaches above 0.8, corresponding with the functional standards.
The Processing of Porous Superfine-Denier Nylon 6 FDY Yarn
Authors: Li Jiang , Hao Chao Wei , Wang Zheng , Ma Qing Fang , Jiang Jiang Xiong
Published: December 2012

In this paper, the porous superfine-denier Nylon 6 FDY(22dtex/35f) was successfully manufactured by blending Nylon 6 chips with a compound masterbatch according to a certain proportion through adjusting the process conditions on high speed spinning machine. The influence of masterbatch’s content and spinning technologies on the properties of FDY fibers with porous superfine-denier is also particularly discussed. And finally we find out the best spinning techniques for Nylon 6 FDY fiber with porous superfine-denier.
Application of Cationic Modification Agent to Pigment Dyeing
Authors: Wu Ying , Zhang Zeng Qiang
Published: December 2012

Cationic modification experiments were performed to research on the affection of modification agent to pigment dyeing. The influences of modification process condition such as temperature, time, bath ratio, modifier and NaOH dosage etc. were suggested as critical for pigment dyeing. It is observed that, fabric has excellent dyeing depth under the condition of modifier 5g/L and NaOH 8g/L, bath ratio 40:1(water: cloth), modification time 55min at 70°C.
Correlation of Natural and Artificial UV Aging of B.mori Silk Fabric
Authors: Ming Jin Fa , Shi Ji , Jiang Yao Xing , Zuo Bao Qi
Published: December 2012

Ultraviolet aging of B.mori silk fabric was carried out under natural and artificial weathering conditions. A series of properties evaluations such as whiteness, mechanical property, ultraviolet protection factor (UPF) and Fourier Transform Infrared (FTIR) Spectroscopy were applied to test on the structure and properties of B.mori silk fabric. The correlation between natural and artificial aging experiments was also investigated. The results showed that the whiteness index of B.mori silk surface declined with increasing aging time. The breaking strength decreased rapidly with the extension of aging time, and adopting the curve regression analysis method to analysis the correlation between two types of aging experiments. The accelerated factor obtained is about 12.33 between natural and artificial aging experiments. In addition, ultraviolet protection factor depicted the anti-ultraviolet performance enhanced. And FTIR spectra confirmed the intensity of characteristic peaks such as amide I and II, etc. decreasing in the aging process.
Study on Pretreatment of Dye Wastewater by Fenton Oxidation Process
Authors: Wang Bi Rong
Published: December 2012

Fenton pretreatment has been used for treating dye wastewater. The effects of the dos of H2O2 and FeSO4, reaction time and pH on the removal COD were investigated. It was found that, when the reaction conditions are as follows: COD 2850 mg/L dyeing wastewater, the dosage of H2O2 is 140mmol/L, FeSO4 17.02 mmol/L, pH 7.6, and reaction time 1.0 h, the CODcr of dye wastewater removal rate of up to 70%. Fenton pretreatment process of dye wastewater has a broad prospect.
Green and Efficient Degradation of Acid Blue 80 with a Macrocyclic Amido Fe Catalyzed H2O2 System
Authors: Ji Xing Yue , Chen Xiao Bin , Wang Xiao Ning , Liu Zhen Dong
Published: December 2012

A macrocyclic amido Fe-complexed/H2O2 system was applied to the dyeing wastewater decolorization and COD-elimination. The relationships between decolorization rate and pH, time, concentration of catalyst and H2O2, and other parameters were investigated. The catalyst demonstrated highest oxidative activity under pH 11~12. When the concentrations of H2O2, catalyst and dye respectively were 2.4×10-3M, 5×10-7M and 10-4M, the decolorization ratio of Acid Blue 80 could reach more than 99% within 10min. This oxidative system had achieved 47.81% COD-removal within half an hour for a 10-3M dye solution.
Decolorization of Textile Wastewater Using Modified Facultative Anaerobic Baffled Reactor
Authors: Liu Zheng Qin , Tan Lei , Li Yue , Xi Dan Li
Published: December 2012

The study deals with a wastewater treatment system which is combination of modified facultative anaerobic baffled reactor (MFABR) and an aerobic unit. The efficient decolorization and biological degradation of the wastewater that contains commercially important cationic red 2GL (azo) in the MFABR under facultative anaerobic conditions are the research focuses. The results indicate that over 95.2% decolorization and about 54.6% COD removal efficiency can be obtained in MFABR. High dye concentration (500 mg/L) still results in over 90.6% decolorization efficiency. The main characteristics of the process are highly efficient decolorization in MFABR and greatly reducing COD in aerobic unit.
Effect of Surface Grafting-Modified on Structure and Property of Cellulose Fibers
Authors: Wang Shu Hua , Dai Jin Ming , Jia Hu Sheng , Xu Bing She
Published: December 2012

Cellulose fibers were chemically modified on surface by acrylamide polymerization and glutaraldehyde crosslinking. The chemical and morphological structures of modified cellulose fibers were investigated with X-ray diffraction, FTIR spectra, and scanning electron microscopy (SEM). The crystalline conformations of the cellulose fibers were slightly changed in polymerization and crosslinking process. The wet strength of modified cellulose fibers was improved. Appreciable difference between the surfaces of native and modified cellulose fibers was observed from SEM images.
Flexibility Analysis of the Cross Axis and Furcated Frame in the Spatial 4-Bar Linkage Weft Insertion Mechanism
Authors: Zhang Lei , Yu Ke Long
Published: December 2012

In this paper, the flexibility of the cross axis and furcated frame of high speed rapier loom was considered through the change of the two components’ material. Corresponding neutral documents were generated in ANSYS, then with the ANSYS-ADAMS co-simulation, those neutral documents were imported into ADAMS. The motion curves of sword belt were received. Through the map analysis and comparison, the relationship of changing the two components’ material and the motion curves of sword belt were found. The simulation results show that, in consideration of the flexible components, rational selection of the component material can greatly reduce the impact on Spatial four bar linkage weft insertion mechanism, thereby enhance the quality of the fabric.
The Influence of Nipper Machine Parameters in New Comber on Nipper Holding Process Performances
Authors: Jia Guo Xin , Ren Jia Zhi
Published: December 2012

That finding out the influence of nipper machine parameters on nipper holding process performances in comber has biggish direction means on most parameters choice of comber and new comber design and use. Using resolution way of machine moving analysis means, on the base of nipper machine structure analysis and moving modeling, by computer, nipper process performances in condition of different eccentric shaft parameters on new comber were calculated and analysed, the relations between eccentric shaft speed ratio, steeve length and nipper opening amount, opening-closing timing, nipper pressure were discussed. Conclusions indicate that: in certain range, the decrease of eccentric shaft speed ratio and steeve length can make nipper opening timing advance and nipper opening amount increase before detaching beginning, which is beneficial to cotton-cluster rising advanced combed by cylinder and comber detaching-overlapping work.
Determination of Covered Spindle Speed of Home Textile Wrapped Rope
Authors: Mao Cheng Dong , Guo Xin , Shi Dong Lai
Published: December 2012

Home textile wrapped rope is a kind of decorative rope that is processed by textile covered technology and has a decorative effect. The appearance of the wrapped rope and post processing performance are closely related to covered spindle speed. This paper discussed the determination of covered spindle speed of home textile wrapped rope, obtained the regression curve equation between covered spindle speed and decorative yarn linear density, and gave the range of covered spindle speed of the wrapped rope.
Low Carbonic Opinion about the Ecology in Fashionable Clothes
Authors: Li Ya , Ma Da Li
Published: December 2012

Low carbonic life is far away from the destined idea state in fact, nowadays fashion consume is the main obstacle in pursuing the low carbonic life. Carbon emission also dominates greater value in pursuing the fashionable clothes. In textile and fashion industry low carbonic idea of the creation of fashion ecology may bring the birth of low carbonic fashion into living life in the surroundings that is not low carbon.
Research of Donghua Prototype Grading
Authors: Liu Yong Mei , Lin Na , Cheng Qin Qin
Published: December 2012

Based on the change of type of figure, constant research has been done on the theory of Chinese clothing prototype——Donghua Prototype (Patent No. 02150747). Through contrasts and analysis of various grading methods, the simplified version of Donghua Prototype grading has been developed. According to the change of type of figure of Chinese female, we modified the version of Donghua Prototype grading by body measurements, wearing experiments, and analysis of coverage rate and dispersion tendency on the experiment data.
Optimized Design of Modern Silk Clothing Based on Material Matches
Authors: Deng Hong Tao
Published: December 2012

The main shortages of traditional design for silk garment are: stylized design concept; simple and plane model; lack of diversified skin texture; and the color limit to the inherent quality of silk fabric, not fit for diversified and personalized aesthetic need of modern people. This paper breaks through traditional fabric design, and proposes optimization design methods of modern silk garment. The methods include matching different silk fabrics with different textures, or matching silk fabrics with other fabrics such as leather, fur, jean and knits.
The Application of Bias Cut in Clothing Design
Authors: Lin Ching Hui , Lin Chin Mei
Published: December 2012

Bias cut is one of techniques in clothing construction. The 45°gyrosigma produce tensile elasticity to have the custom curve and outfit more graceful, elegant and lively. It is an indispensable technique of fashion creation. Bias cut is adopted most frequently, and considered as a quiet difficult cutting technique .Therefore in the creation of clothing design, the bias cut has a lot of performance space. This study discusses the relationship between the features of bias cut and clothing structure. Through the works of fashion designers analyze the techniques used and the possibility of development, to provide researchers different design thinking for further study and development.
Brief Analysis of Traditional Uyghur Felt
Authors: Saitaer Xiakeer
Published: December 2012

Intangible material culture of all ethnic groups in Xinjiang contains sizable excellent core in art and crafts, which serve as important resources available in current economic and cultural construction in Xinjiang. The long-established and traditional Uyghur handicraft of felt making has over the ages developed unique ethnic distinctives and an inheritable nature. It has value in the historical, cultural, scientific, aesthetic, and economic realms, and thus qualifies as priceless intangible cultural heritage. This paper discusses the raw material in traditional Uyghur felt handicraft and the classification of traditional Uyghur felt.
Hebei Home Textile Industry Cluster Optimization Research Based on SWOT Analysis of Entropy Fuzzy Comprehensive Evaluation
Authors: Chen Feng Ping
Published: December 2012

Home textile enterprises occupy an important position for the economic development in Hebei province China. In recent years, Hebei textile industry cluster is developing rapidly and the industrial chain is extending. The concept of large home textile has come out. Using SWOT analysis method and entropy fuzzy comprehensive evaluation method, internal strengths and weaknesses, external opportunities and threats of Hebei home textile industry cluster are described and summarized. The key issues in the home textile industry cluster are found out and suggestions and countermeasures are proposed.
Research on the Technology Innovation Ability of Textile and Apparel Industry
Authors: Zhu Hai Feng , Huang Ming Lang , Zheng Zhe
Published: December 2012

This article makes use of analytic hierarchy process (shortened for AHP) to set up an evaluation system about the innovation ability of textile and apparel industry in China. Based on the guidelines released by National Bureau of Statistics and the particular cases in this industry, the article makes an assessment of the technological innovation and creates four first-level indexes, which are respectively indexes of potential resources for technology innovation, technology innovation activity, output ability of technology innovation and technology innovation environment. By comparison and analysis of different data in different years, it comes to the conclusion that the ability of technological innovation is on the rise.
The Strategy Study of the Development of Shanghai Textile and Garment Industry Cluster
Authors: Jiang Shi Long , Hu Shou Zhong
Published: December 2012

The industry cluster is an inevitable stage in the development of a regional industry and also a effective way to enhance the industrial competitiveness of a region.The textile and garment industry, as a traditional industry in Shanghai ,is facing a stage of further development of industrial clusters,In this paper,we talk about the status quo of Shanghai textile and garment industry cluster analysis, the development trends and the development of countermeasures discussed.
Properties and Product Development of the Kapok Fiber
Authors: Ji Yi Ping , Wang Rui
Published: December 2012

The variety of kapok plants, compositions and components of kapok fiber, the fiber’s physical and chemical properties were introduced; and the product development of kapok fiber in the fields of travel, entertainment, the medium or top grade bedclothes and waddings, pillow core, back cushion and other filling materials, and also the medium or top grade garments and home textile fabrics were discussed and explored. Results show that kapok fiber is a versatile material in producing advanced buoyancy products, thermal insulation and sound-absorbing materials, and garment fabric materials.
Effect of Shot Number on Crater Formation of Magnesium Alloy Modified with High-Intensity Pulsed Ion Beam
Authors: Li Peng
Published: December 2012

Abstract. HIPIB irradiation of magnesium alloy is carried out at a specific ion current density of 100 A/cm2 with shot number from one to ten in order to explore the effect of shot number on crater formation of magnesium alloy. Surface morphologies, surface roughness and mean spacing of surface profile irregularities of the irradiated samples are examined by scanning electron microscopy (SEM) and profilometer technique, respectively. It is found that the surface roughness, the mean spacing of surface profile irregularities, and the maximum crater diameter on the irradiated surface increase with increasing shot number, whereas the crater density decreases as the shot number increases.
Research Progress in Wear-Resistant Nanocomposite Coatings by Electroless Nickel
Authors: Cui Lin , Zhao Shi Hai , Huang Liang
Published: December 2012

Electroless nickel has been used to prepare composite coatings with embedded nanoparticles. Surfactants and agitation methods have marginal effects on the deposition behavior of electroless composite coatings. Many researchers have investigated the influences of nanoparticles including WC, SiC, Al2O3 and diamond on the tribological properties of composite coatings. The present article reviewed mainly the advancement of electroless Ni-P nanocomposite coatings in recent years. The existing problems and the suggestions for the further study of composite coatings were indicated.
Algaecide Activity of Organic Clay Mineral Modified by Bis-QAC
Authors: Zhou Fei , Zeng Li Le , Lu Wei
Published: December 2012

A new organic clay mineral(O-MMT) was synthesized by using montmorillonite(Na-MMT) and bis-type quaternary ammonium compound, 1,5-(pentamethylene) bis (N,N`-diethyl dodecyl acetate ammonium bromide) [PDA] and its CEC, hydrophobicity and algaecide activities were investigated. Results showed that contact angle of Na-MMT and O-MMT are 45.3° and 138.0°, and their CEC are 1.02 and 1.43 mmol•g-1, respectively. O-MMT had 98.5% average algal survival rate against Microcytis, Anabaena, Chlorella and Chlamydomonas at the optimal algaecide conditions, 48h treatment time and 1.0 g•L-1 dosage, which is far higher than 48% of Na-MMT.
Analysis of Novel Structure of EVA/Hemp Stem Powder Foam Materials
Authors: Hao Xin Min , Ma Wen Juan , Gan Ge , Zhao Peng Cheng , Yang Yuan , Wang Rui
Published: December 2012

This paper introduces the study of structure on EVA (ethylene-vinyl acetate)/hemp stem powder compound system. The micro behavior of EVA/hemp system was measured by SEM (Scanning Electron Microscopy), and its thermal properties were measured by DSC (Differential Scanning Calorimetry ). It indicates that hemp stem core has entered into EVA foaming system successfully when measured by FT-IR (Fourier Transform Infrared).
Application of Glass-Ceramic in Interior Design
Authors: Li Bi , Hu Wei Ping , Li Li Qiu
Published: December 2012

As a new inorganic material, glass-ceramic has been widely used in areas of electron, chemical industry, biomedicine, medical engineering, military and architecture, but it is fewer seen applied in interior design. Based on the multiple properties such as naturally tender texture, high glossiness, zero radioactivity and the abundant color that glass-ceramic has, the author is convinced of the bright future of the application of glass-ceramics in interior design. Through performance study of glass-ceramics, the paper explores application and prospect of glass-ceramics in interior design.
Crash Energy Absorption of Braided Composite Tubes and its Application in Vehicle Passive Safety
Authors: Zhang Ping , Gui Liang Jin , Fan Zi Jie , Ma Jian , Liu Jing Yu
Published: December 2012

Braided composite tubular structures are of interest as viable energy absorbing components to improve vehicle passive safety. Unfortunately, there are many difficulties in predicting the crash response of braided composite tubes. In this study, a progressive failure model for braided composite materials, which had been implemented as a user material model in ABAQUS/Explicit, was used to simulate the axial crash response of braided composite tubes. It was shown that the model adequately captured the failure characteristics (such as matrix cracking, fiber fracturing and delamination) and energy absorption of braided composite tubes under axial compression. In addition, the simulation results show that braided composites have higher energy absorption performance compared to traditional metals.
Relationship between Structure and Properties of High Tenacity Polyamide 6 upon Different Draw Ratios and Heat Styling Temperatures
Authors: Yang Chao , Zhou Yong Kai , Zhang Hua
Published: December 2012

This paper has studied the structure and property of high tenacity polyamide 6 upon different draw ratios and heat styling temperature process conditions, characterized with wide-angle X-ray diffraction (WAXD), sound velocity method, Fourier transform infrared (FTIR) spectroscopy, amino-terminated content determination and essential property texts such as the absorption of moisture and dyeing. It was demonstrated that increasing the draw ratio (DR) and heat styling temperature were conducive to crystal-to-crystal transformation and stabilizing the internal structure of fibers. The temperature played a significant role in orientation of high tenacity polyamide 6, particularly subjected to a higher heat styling temperature, owing to its thermo plasticity. And increasing the draw ratio and heat styling temperature were both conducive to the tensile property, but little beneficial impact on moisture property. The high tenacity polyamide 6 exert a good effect on absorption of moisture and acid dye, and for dyeing the effects of hydrogen-bond as well as the van der Waals’ force play a significant role in dye pickup, especially in the high tenacity polyamide 6 upon different draw ratios.
Effects of A-Site Equivalence and Non-Equivalence Substitution on Structure and Electric Properties of K0.5Na0.5NbO3 Lead-Free Piezoelectric Ceramics
Authors: Zhang Hong Mei , Zhao Jing Bo , Qu Shao Bo , Du Hong Liang
Published: December 2012

For Na0.5K0.5NbO3(KNN)-based lead-free piezoelectric ceramics, an important phenomenon was found that the piezoelectric properties can be improved remarkably for equivalence substitution while it can’t be improved remarkably for non-equivalence substitution. To find out the real reason for this phenomenon, Li+ and La3+ were used to modify KNN lead-free piezoelectric ceramics by conventional sintering technique. The relaxor characteristic was detected for La3+ modified KNN lead-free piezoelectric ceramics, and this caused low piezoelectric properties. However, the relaxor characteristic can not be detected for Li+ modified KNN lead-free piezoelectric ceramics, and the piezoelectric properties is higher than that of La3+ modified KNN lead-free piezoelectric ceramics. Accordingly, the relaxor characteristic has important effect on structure and electric properties. The results show that equivalence and non-equivalence substitution have important and different effect on structure and performance of KNN ceramics.
Influence of Super Hydrophobic Modification on Protective Performance of PTFE Micropore Membrane
Authors: Hao Xin Min , Yang Yuan , Feng Xin Xing , Wang Fei
Published: December 2012

Using self - prepared fluorochemical surfactant, PTFE micropore membrane was modified to improve its hydrophobicity. The surface morphology of the membrane was observed by SEM and its Contact angle was determined by. The protective property of the membranes against mustard gas was evaluated using the break-through test. The result shows that, the thesis put forward a novel BC protection idea that through membrane surface modification the poisonous agent can be rolled into liquid spheres and slided away from the membrane surface automatically because of the low surface tension of the membrane, which stands out from the traditional methodology by quick poisonous agent surface expansion and evaporation on the surface of the BC protective material.
Initiator Concentration Effect on Rheological Properties of a pH-Sensitive Semi-IPN Hydrogel Based on Konjac Glucomannan and Methacrylic Acid
Authors: Zhang Chi , Han Hui Min , Qu Peng , Xu Jing , Zhou Ye , Wang Jing , Zhao Ning , Xu Jian
Published: December 2012

A pH-sensitive semi-interpenetrating polymer network (semi-IPN) hydrogel based on Konjac glucomannan(KGM) and methylacrylic acid(MAA) was prepared by free radical polymerization at different concentrations of initiator potassium persulfate (KPS) in presence of crosslinker N,N-methylene-bis-acrylamide (MBA). The chemical structure and rheological properties of hydrogels were characterized by FT-IR and rheometry, respectively. In addition, the swelling behavior of the hydrogels were studied in buffer solution at different pHs.
Osteoblasts Express More Collagen I and Osteocalcin on Extracellular Matrix Patterns
Authors: Pan Chang Jiang , Nie Yu Dong , Dong Yun Xiao , Ding Hong Yan
Published: December 2012

In the present study, we apply microcontact printing (μCP) to create extracellular matrix (ECM) stripe patterns on polystyrene (PS) surfaces and then the effects of these patterns on osteoblast cell behaviors are investigated. The results demonstrate that osteoblast cells preferentially adhere and grow on the protein areas, leading to the deformed cell morphologies. Compared to the adherent cell on isotropic ECM coating, the deformed cells express more type I collagen and osteocalcin, indicating that the patterns can enhance protein expression of osteoblast cell by changing the cell morphologies. Therefore, it is possible to improve cell functions by carefully designing pattern shapes and sizes. We believe that the present results can contribute to development of the novel biomaterials and engineered tissues for bone repair, where the enhanced protein expression is needed.
Preparation and Anti-Scratch Property of Supersonic-Particles-Deposited Coating on Magnesium Alloy
Authors: Wang Xiao Ming , Zhu Sheng , Chang Qing , Han Guo Feng
Published: December 2012

In order to protect magnesium alloy structure used in equipments, Al-based alloy coating on ZM5 magnesium alloy surface was prepared by Supersonic-Particles-Deposition(SPD). Microstructure,bonding strength,hardness, anti-scratch property of the deposited Al-based alloy coating were analyzed and tested using scanning electron microscope(SEM),energy dispersive spectrmomter(EDS), dualization stretching method and scratch testing machine. The results indicated that the coating was compacted with 1.19% porosity on superficial layer and 0.08% porosity on cross-section, respectively. The bonding strength value was 42.37MPa, moreover the interface was distinct and continuous,without defects such as ablation and impurity. Microhardness of the coating was about 1.3 times to that of uncoated substrate. The anti-scratch property of the processed coating improved obviously compared to Mg-substrate.
Research on Properties of Fabrics Finished by Nano Titanium Dioxide
Authors: Pang Yu , Zhong Zhi Li , Liu Hua Wu , He Li Yun
Published: December 2012

The article explored the finishing process of cotton fabric with nano titanium dioxide and adopted the dipping-rolling-drying process for the purpose of cotton fabric with good ultraviolet (UV) resistant performance. In this study, the concentration of titanium dioxide acted as variable factor to test and analysis the regular pattern of fabric UV resistant performance, mechanical properties and wearability after being treated with different concentrations of titanium dioxide solution. The results showed that the property of UV resistance improved with the increase of solution concentration. The ultraviolet protection factors (UPF) of fabric was 43.5 at a concentration of 0.5%, which was beyond the UV resistant standard of 40. However, the mechanical properties and wearability decreased in varying degrees with the increase in concentration of titanium dioxide. Thus the overall performance should be considered comprehensively to select the finishing process. All of these conclusions provide basic data for some in-depth research in the future.
Process Optimization of the Preparation of TiO2 Microcapsule Used for Photo-Catalytic Degradation with Ultrasound Irradiation
Authors: Wang Xiao Mei , Zhao Bao Bao , Zhang Cheng Rong
Published: December 2012

Microcapsules were prepared using the complex coacervation method with nano anatase TiO2 as the core material, gelatin/Arabia gum as the wall material, while dispersing TiO2 into the reaction solution using the ultrasonic. The prepared microcapsules can be finished into textiles such as the polypropylene nonwovens, and the microcapsules in the textiles gradually fracture and the anatase TiO2 was released, which would facilitate photo-degradation of the polypropylene nonwovens when exposed in sunlight. The microcapsules size was used as the process optimization evaluation index, and the quadratic general revolving combination design was used to conduct the experiments for obtaining the optimum ultrasonic conditions, and the other progress parameters were the same that used in our early microcapsule preparation. The obtained optimal process for ultrasound is: ultrasonic time is 17min; ultrasonic power is 74W and ultrasound temperature 60 °C.
Synthesis and Characterization of Nanorods of Ni-Fe Composite Oxides
Authors: Li Xue Fei , Wang Hong
Published: December 2012

Nanorods of Ni/Fe complex metal hydroxides precursor were fabricated by a microemulsion method. The nanorods were 20~30 nm in diameter and 600~1000 nm in length, with amorphous structure. Ni/Fe composite oxides were obtained by calcinations of Ni/Fe complex metal hydroxides precursor. At 500 °C, the sample retained the morphology of the nanorods, with the same diameter to the precursor and the length shortened to 300~400 nm. The crystal phase was composed of NiO and dispersed amorphous Fe2O3. When the calcination temperature was higher than 500 °C, the morphology of the nanorods of the precursor were collapsed to nanoparticles, and the crystal phase transformed to the mixture of NiO and NiFe2O4.
Synthesis of Copper Nanoparticles by Chemical Reduction Method and its Influential Factors
Authors: Wang Li Na , Li Ming Yu , Zeng Qing Xuan
Published: December 2012

Synthesis of copper nanoparticles was achieved by reduction of copper sulfate solution using sodium hypophosphite (NaH2PO2). The nanoparticles are characterized by using SEM and XRD techniques. The XRD analysis and theoretic calculation indicate that the products have a fcc structure, and the size of crystallite is about 20 nm. Different solvents have been used to produce copper particles with different shapes, and the size of the particles can be controlled by varying reaction condition.
Water Absorption of Basalt Fiber Reinforced Cement
Authors: Jia Tao Fang , Liu Hua Wu , Chu Fan Jie , Sun Han , Yang Shu Wei , Yang Tian Yang
Published: December 2012

Chopped basalt fibers untreated and treated by silane coupling agent were used to modify cement sample, in order to reduce water absorption. After fully soaked in water, the water content went up with the increase of fiber content. When the fiber content was 2.5Kg.m-3, the water absorption ratios of the samples reinforced by fibers without and with silane treatment were 4.83% and 5.44%, which were 57.1% and 39.5% less than the control group. This indicates that the fiber content was significant to water sorption and the influence of silane treatment is unnecessary for the reduction of water sorption.
Manufacturing Techniques and Mechanical Properties of Recycle Kevlar®/PET Composite Nonwoven
Authors: Lou Ching Wen , Chen An Pang , Chuang Ya Yuan , Lin Jan Yi , Lin Mei Chen , Lin Jia Horng
Published: December 2012

Kevlar® fiber has characteristics of thermostability, high modulus, low elongation, impact resistance, chemical resistance and high performance. Therefore, in this study Kevlar® fiber was used to reinforce the nonwoven fabrics. In this research, the content of the Kevlar® fiber was varied as 0 wt%, 5 wt%, 10 wt%, 20 wt%, and that of 15D PET fiber was changed as 70 wt%, 65 wt%, 60 wt%, 50 wt% accordingly when the Low-Tm polyester fibers was constant as 30 wt%. These fibers were used to manufacture the Kevlar®/PET composite nonwoven by nonwoven processing. Afterwards, the mechanical properties of the Kevlar®/PET composite nonwoven was measured both at cross direction and machine direction.
Preparation and Properties of RE/Novel Polyamide Composite Fibers
Authors: Wang Bin , Jia Qing Xiu , Zhao Guo Liang
Published: December 2012

Eu(TTA)3phen of Lanthanide complexes was synthesized, and the biobased aliphatic copolyamides (novel PA) were synthesized by condensing the biobased diacids and diamines. The luminescent europium composite fibers, Eu (TTA)3phen/bio-PA,were prepared by doping technique, and by using melt spinning method, we obtained Eu (TTA)3phen/novel PA composite fibers. The phase structure and the relationship between the fluorescence intensity of composite materials with added rare earth content were characterized by scanning electron microscopy, fluorescence spectra and X-ray diffraction.
Property Evaluation of Sodium Alginate/Chitosan Compound Dressings
Authors: Lou Ching Wen , Lu Chao Tsang , Hu Jin Jia , Lin Wei Jen , Lin Meng Chen , Lin Jia Horng
Published: December 2012

Polymer materials such as sodium alginate, chitosan, polylactic acid, and pectin, are commonly used as biomedical materials. This study combines sodium alginate (SA) and chitosan solutions to make the compound membranes. The compound membranes with optimal parameters are then combined with base fabrics, forming the compound dressings. SA and chitosan are mixed with various ratios, and then added with calcium chloride (CaCl2 (aq)), after which the mixture is thermally treated to form the SA/chitosan compound membranes. Moisture retention, swelling, weight loss, water contact angle, and water content ratio tests evaluate the resulting membranes, determining the optimum parameters. When the ratio of SA to chitosan is 7:3, the resulting membranes exhibit an optimal swelling. The weight loss of the membranes starts decreasing with the addition of CaCl2 (aq), indicating an increase in the structural stability of the compound membranes. Lastly, the water contact angle of all compound membranes is smaller than 90°, stating that they have a good hydrophilicity.
Property Evaluation of Sound-Absorbent Nonwoven Fabrics Made of Polypropylene Nonwoven Selvages
Authors: Lin Jia Horng , Huang Chen Hung , Chuang Yu Chun , Shih Ying Huei , Lin Ching Wen , Lou Ching Wen
Published: December 2012

The rapid development of textile industry at the beginning of the Industrial Revolution results in the invention of synthetic fibers. As synthetic fibers cannot be decomposed naturally, significant textile waste is thus created. Selvages, which make up the majority of our total garbage output, have a low value and thus are usually sold cheaply or outsourced as textile waste. This study aims to recycle and reclaim the nonwoven selvages which are discarded by the textile industry. The recycled polypropylene (PP) selvages, serving as a packing material, and 6 denier PP staple fibers are made into the recycled PP nonwoven fabrics. The resulting nonwoven fabrics are subsequently tested in terms of maximum tensile breaking strength, tearing strength, surface observation, thickness measurement and sound absorption coefficient.
Design and Synthesis of Novel Hematite Core-Shell Polymeric Composites
Authors: Wang Hong , Li Xue Fei , Wang Ying , Ren Jiao
Published: December 2012

A novel synthetic method was developed for the preparation of core-shell composites consisting of α-Fe2O3cores with poly(styrene-co-methyl methacrylate) (P(St-co-MMA)) shells via emulsion copolymerization of styrene and methyl methacrylate monomer with surfactant of PVP. The structure, morphology and thermal properties of the composites were been characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). The results confirmed that there was no chemical interaction between α-Fe2O3and copolymer, and the onset of thermal decomposition for nanocomposites shifted to a higher temperature than that for neat copolymer.
An Overview of Fermentation Production and Application of Bacterial Cellulose
Authors: Huang Ying , Chen Ying Ming
Published: December 2012

Bacterial cellulose is a new pattern material produced by microorganism, because it has unique physical properties, chemical characteristics and mechanical properities, so it’s widely applied into food, biomedical, textile and many other kinds of industry. On the other side, because it’s a kind of pure natural biopolymer produced by microorganism, so the cellulose has biological activity, biodegradability and biocompatibility etc of excellent characteristics. It has been proved that bacterial cellulose is a biological environmental protection type material, so it becomes the hotspot of many researches and applications all over the world. This paper summarized the method of screening the cellulose-producing strain, how to make the bacterial cellulose yield increase, and the bacterial cellulose’s important applications in different industries.
Preparation of Photoanode of Dye-Sensitized Solar Cell by Electrospining
Authors: Chu Yun Yun , Chao Yu Chou
Published: December 2012

The dye-ability and electron transport property of TiO2 film are the two critical factors in determining efficiency of the the dye sensitized solar cell (DSSC). Increasing dye adsorption which increases the light harvesting is usually achieved by using nanoporous or nanoparticle TiO2 films. Electron transport is determined by the inter-particle resistance of TiO2 film. Electrospinning is a viable method for forming porous structure materials with high surface area and less immersing time. In this study, it was found that electrospinning is able to achieve good solar cell performance due to the high electron transport caused by the nano-pores in the TiO2 film.
Implement and Design for Industrial Engineering Experiment Teaching
Authors: Xu Yan , Liu Qun
Published: December 2012

The study analyzes the Industrial Engineering experiment condition, foreign IE teaching and experience condition. It sums up a large number of viewpoints. In conclusion, the study structures the IE experience teaching system. It also gives the IE practice project of the School of Management of Tianjin University of Technology.
SLP-Based Layout Design for a Reclaimed Rubber Factory
Authors: Wang Xian , Wang Hui Fen , Kong Jian Shou
Published: December 2012

In this paper, a layout is designed for reclaimed rubber factory by applying systematic layout planning (SLP) method. Considering the enterprise current situation and future development plan, the relation graph for all workshops in the company is obtained by analyzing material and non- material flows, and two feasible layout plans are put forward. Applying the comparative law of equivalent flow capacity, these two plans are compared, and then the final objective and optimal design is obtained. With this layout redesign, the logistics operational efficiency is improved, and the production system is optimized.
Stress Analysis on a Weld Seam between Spiral Case and Penstock
Authors: Bai Xin Li , Zhao Ya Wei , Zhang Yin Fang
Published: December 2012

Prototype observation and finite element analysis were carried out on a weld seam between a spiral case and a penstock of #6 generator in a certain power plant. According to the observation data and finite element calculated results, deformation and stress were analyzed for the weld seam in continuous operating stage (power generation, EL. 206.00). The results show that in the normal operation power generation stage, the strengths of the penstock, the spiral case and the weld seam are all satisfied; Even if the inlet water level reaches to EL. 275.00, the three parts are all safe (when the residual stress isn’t considered, the stress is far lower than the strength allowed values). However, the stress at point E is obviously higher, it is necessary to make further testing inspection. Finally the following suggestions are given: (1) the strain gauges should be arranged both circumferentially and axially, this is because the circumferential stress of weld seam is greater than axial stress; (2) the stiffener rings should be moved left by 50mm, thus the axial stress can be minimized and the circumferential stress can also be reduced.
FEM Simulation of Metal Drawing Parts Forming Based on the ABAQUS Software
Authors: Luo Zhi Gao , Zhao Jun Li , Li Xu Dong , Zhang Jing Jing , Shao Ying Qing
Published: December 2012

In this paper, metal stamping deep drawing forming process was simulated by Abaqus software. first of all, metal deep drawing forming for finite element modeling and analysis. Then the simulation results of drawing parts metal forming were analyzed. Include the analysis of stress-strain changes over time and the most serious regional. To determine the position easy to crack in the process of metal drawing parts stamping. Finally, by stamping test to verify the position of the cracks by punching test whether compliance with the simulation results. Verify the accuracy of the Abaqus software in the process of stamping simulation. Verify the accuracy of the Abaqus software simulation in metal forming processes.
Characterization of Al-Zn-Sn as Sacrificial Anodes to Protect Underground Oil Pipelines in Al-Hilla Regional
Authors: Al-Sultani Kadhim F. , Nabat Jenan Nasser
Published: December 2012

Sacrificial anode cathodic protection is one of the most widely used methods in protecting buried oil pipe lines against the corrosion damages. In the present work, a series of Aluminum alloys have been prepared as sacrificial anodes candidates to be used in the protection of the oil pipelines that pass through the Al-Hilla region. These prepared alloys were microstructurally and electrochemically characterized to evaluate their performance as Al-sacrificial anodes for cathodic protection of oil pipes The relationships between the protection potential with time, sacrificial anode life, discharge currents, and capacity of sacrificial anodes were found, taking into consideration the distance between sacrificial anode and protected steel sample. According to the results obtained, the best selection of sacrificial anodes was (Al-4% Zn-0.5% Sn) alloy at 30cm in Al-Hilla region.
A Study of Cutting Parameters Optimization in High-Speed Milling GH4169 with TiAlN Coated Carbide Tool
Authors: Liu Wei Wei , Yu Yuan , Li Feng , Yao Chang Feng , Liu Bin
Published: December 2012

The orthogonal experiment is processed for high-speed milling superalloy GH4169 with TiAlN coated carbide inserts. The surface roughness prediction model based on cutting parameters is established by using the least-squares regression method. And the effect of cutting parameters on surface roughness is studied. According to the prediction model of surface roughness, a model of cutting parameters optimization by using genetic algorithm based on annealing penalty function is established for maximum material removal rate under specified surface roughness values. Obtain the optimal parameter combination when the surface roughness Ra≤0.2µm, and the experimental validation is done. These results provide the basis for improving processing efficiency of processing GH4169 and choosing parameters under specified constraint conditions.