bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabric Materials and Sportswear Anti-Drag Performance Relationship
Authors: Yan Yu Xiu , Lou Li Juan , Tao Jian Wei , Jin Zi Min
Published: September 2013

In this study four kinds of materials on the market most commonly used for sportswear are selected to knit one sports vest in plain style, woven by seamless circular knitting machine. We use wind tunnel tests to do the experiments and gather datum of experiments and analyze them to research the relationship between textile materials and wind resistance performance of sportswear. The results showed that: in the wind tunnel experiments, when wind speed is between 3.3 m/s and 9.35m/s, the wind resistance performance of the four experiment clothes is almost the same; When between 9.35 m/s and 11.00m/s, their wind resistance performance demonstrates a dispersion level; When it is between 11.00m/s and 18.70m/s, their differences of wind resistance performance between the four clothes are significant. The wind resistance performance could be sequenced from the good to the poor like this: 15.6tex combed cotton + coolmax modified polyester, 7.7tex/48f nylon, 15.6tex combed cotton, 9.7tex modal +15.6tex TC, and the fitting curve equation is obtained from the measured datum analysis through the SPSS software.
Study on Warm-Cool Feeling of Knitted Fabric
Authors: Hu Shu Rong , Li Jun
Published: September 2013

The warm-cool feeling of 8 kinds knitted fabrics was test by KES-F7, the subjective of warm-cool feeling was evaluated with hand touching by 30 female volunteers. The relationship between objective measurement and subjective evaluation was studied by the correlation analysis method. It is found that the transient heat conduction between the fabric and skin is influenced by the fiber composition and structure obviously. The surface properties and the parts of absorption and quick-drying property have an opposite correlation on the knitted fabric warm-cool feeling.
Research on Alkaline Pectinase for Hemp Degumming
Authors: Li Ming , Wang Hong Xin , Sun Xin , Lu Fu Ping
Published: September 2013

Alkaline pectinase has a broad application prospect in textile field. In hemp degumming, enzymatic degumming is preferred because of the better fiber quality and less environmental pollution. In this thesis, we used the recombinant strain Bacillus subtilis TCCC11485 constructed in our laboratory to express high-yield alkaline pectinase. The optimal conditions of the alkaline pectinase for hemp degumming were determined by single factor experiments as: bath ratio 1:36, pH 8, 45°C, enzyme activity 600 U/mL, degumming for 6 h. Under the above conditions, the residual gum content of fiber is 32.76%. Further, the scanning electron microscopy (SEM) was also used to compare quality of the hemp fibers produced by enzymatic-, chemical-degumming. The results showes that the fibers are in higher quality by alkaline pectinase degumming, suggesting the prospect of commercial applications in domestic textile industry.
Mass Production of Nanofibers from a Spiral Coil
Authors: Wang Xin , Wang Xun Gai
Published: September 2013

In this study, we have demonstrated that a rotating metal wire coil can be used as a nozzle to electrospin nanofibers on a large-scale. Without using any needles, the rotating wire coil, partially immersed in a polymer solution reservoir, can pick up a thin layer of charged polymer solution and generate a large number of nanofibers from the wire surface simultaneously. This arrangement significantly increases the nanofiber productivity. The fiber productivity was found to be determined by the coil dimensions, applied voltage and polymer concentration. The dependency of fiber diameter on the polymer concentration showed a similar trend to that for a conventional electrospinning system using a syringe needle nozzle, but the coil electrospun fibers were thinner with narrower diameter distribution. The profiles of electric field strength in the coil electrospinning was calculated and showed concentrated electric field intensity on the top wire surface.
The Decoloration Property of Modified Reed Absorbent for Alkaline Fuchsin Wastewater
Authors: Ying Yu
Published: September 2013

The modified reed absorbent was obtained by the being treated process with NaOH solution. The decoloration property of modified reed for alkaline fuchsin was studied under different conditions. The effects of adsorbent dose, adsorption temperature, adsorption time and pH value on the decoloration property were investigated, and the optimal adsorption condition was gotten,, the discoloration rate was above 95%. The adsorption isotherm was well represented by the Langmuir.
Practice and Production of Fractal Polyester/Cotton Blended Fabric
Authors: Liu Jun Mei
Published: September 2013

Fractal polyester has distorted gene of similar nature fiber that can produce nature distort by digital fractal enlargement. Fractal polyester/cotton blended yarn is made of nature cotton fiber and a little polyester filament with fractal structure by doubling and twisting machine. The fractal polyester/cotton blended fabric characterizes super nature fabric that the inner is fractal polyester filament with good shape retention, while the outside layer is cotton fiber. The study discussed spinning and weaving technology of fractal polyester/cotton blended fabric. The key technology of spinning is twisting process of cotton yarn and fractal polyester filament, which evenly adjusts two kinds of yarn tension. In order to stabilize the doubling yarn effect with "Dragon Chanzhu", yarn steaming technology is necessary, which steaming time are 40 minutes, steaming temperature is at 110°C-140 °C. Sizing and Weaving processes ensure fabric quality and productive efficiency. So choose "small tension, low elongation, good coating property, pressing yarn hairiness" as sizing process route process route, and choose "early shed timing, high back beam, large shed opening " as weaving process.
Effects of Air-Phosphoric Acid Activation on Pore Structure and Adsorption Property of Mesoporous Carbon from Hemp Stem
Authors: Sun Jin Ju , Gao Jian Min , Hao Xin Min , Cui Xin Yu , Ma Tian , Yang Yuan
Published: September 2013

Mesopore activated carbons were prepared using hemp stem as feedstock by air-phosphoric acid activation method. The crystallite size of hemp stem-based mesoporous carbon is small, and its pores is larger. The phosphoric acid solution concentration has a signification effect on pore structure and adsorption property of mesopore activated carbons from hemp stem. The mesopore activated carbon attained at phosphoric acid solution concentration of 50% exhibits a maximum BET(Brunauer Emmett and Teller) specific surface area of 1351m2/g, total pore volume of 1.21 cm3/ g, mesopore pore volume of 0.90 cm3/ g and a mesopore fraction of 74.4%. And the resulting carbon has smaller crystal size, developed pore structure, wider pore size distribution.
Study on the Implementation Method of Green Textile
Authors: Zhang Ben Zhao , Qin Chen
Published: September 2013

In the context of sustainable development, the green and sustainable development of textile industry has been widespread concerned, the development of green textile is inevitable. In order to realize the green textile, this study started from the sustainable development of the textile industry, and explored the methods to implement green textile, then the green cycling development system of textile industry was put forward.
Brief Analysis of Folk Hand-Woven Carpet Craft in Xinjiang
Authors: Saitaer Xiakeer , Zhang Chu Yang
Published: September 2013

As a kind of handicraft of Uygur, Xinjiang Hetian carpet takes up a pivotal position in Uygurs life, because Hetian was the birthplace of the Uygur carpet and the production of carpet in Xinjiang has always been centered on this place. Elaborately made by folk artists with traditional hand craft, Uyghur carpet is sophisticated in materials, delicate in textile technology, which is one of the major reasons why it is favored by customers from both home and abroad. With distinctive national features and strong local colors, Uyghur carpet is called as a distinctive oriental carpet. [ The raw materials and weaving processes, etc. of Xinjiang Uyghur folk hand-woven carpet is described in this paper.
Degumming of Mulberry Silk with Papain in Non-Aqueous Systems
Authors: Sun Sheng , Yi Shi Xiong , Zhang Nan
Published: September 2013

The nonionic reverse micelles used for degumming of mulberry silk were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of papain aqueous solution. The weight loss of mulberry silk degummed at different concentration of papain in TX-100 reverse micelles was investigated. The effect of the amount of solubilized water was also discussed. The polarizing optic microscope was employed to observe the surface morphology of the mulberry silk. The results indicated that the weight loss of the mulberry silk was increased with increasing concentration of papain, but the W values exhibited the reverse trend. The good degumming of mulberry silk with papain was obtained in TX-100 reverse micelles. The strength of mulberry silk decreased with increasing concentration of papain.
Decolorization of Orange II in Water Induced by Ferrous/Sulfite System at near Neutral pH Values
Authors: Yu Ying Tan , Ding Wei , Zhang Li , Chen Long , Wu Feng
Published: September 2013

In this study, Orange II, a typical and stable azo dye, was chosen as the target pollutant. The works on the decolorization of Orange II become more practical, due to its high chroma, potential carcinogenic effects and the difficulty of degradation. Orange II (10 mg·L-1) was efficiently decolorized at initial pH about 6 with an efficiency of 84% by Fe(II)-sulfite complexes after 60 min. As the initial concentration of sulfite ranged from 0.6 mmol·L-1 to 1.5 mmol·L-1 and the initial concentration of ferrous ranged from 0.1 mmol·L-1 to 0.5 mmol·L-1, the decolorization rate of Orange II increased gradually. Without UV-Vis irradiation, the initial decolorization rates of Orange II by Fe(II)-sulfite complexes increased as the initial concentration of Orange II increased from 2 mg·L-1 to 20 mg·L-1, thus following pseudo-first-order reaction kinetics. Consequently, Orange II could be effectively decolorized at near-neutral pH (5-7) by Fe(II)-sulfite system, thus having more advantages for water treatment. But further study is needed for reaction mechanism and improving mineralization rate of organic pollutants and pratical applicability.
Structure – Property Relationships for Dyes of Different Nature
Authors: Telegin Felix , Shushina Irina , Ran Jian Hua , Biba Yulia , Mikhaylov Aleksandr , Priazhnikova Viktoriia
Published: September 2013

Systematic analysis of quantitative structure – property relationships for dyes of different nature has been reviewed. On the basis of the experimental results published in the literature and theoretical evaluation of amphiphilic and electrophilic properties of dyes of different nature several basic conclusions of scientific and practical importance are proposed.
It was found that water/octanol partition coefficients exhibit correlation with dye partition between hydrophobic synthetic fibres and dyebath as well as dye affinity. Hydrophobicity of dyes controls several technical properties of dyes and dyeings, such as wash fastness and light fastness, migration factor, rate of dyeing and fixation rate.
Energy of frontier electronic orbitals (HOMO and LUMO energies) correlates with different properties characterizing redox properties of dyes: oxidative and reductive destruction in chemical reactions, photochemical and biochemical destruction of dyes, wash and light fastness of dyeings.
The results of this study are useful for physico-chemical analysis of dye sorption by textile fibres, destruction of dyes in polymers and solutions as well as for design of new dyes of high quality.
Inhibition of Mordant Dyes Destruction in Fenton Reaction
Authors: Ran Jian Hua , Shushina Irina , Priazhnikova Viktoriia , Telegin Felix
Published: September 2013

Kinetics of destruction of acid and mordant dyes in Fenton reaction was investigated by the use of spectral method. Inhibition of destruction of some mordant dyes was observed. A simple theory for describing this phenomenon was proposed, which is based on consideration of participation of iron ions in complex formation with mordant dye ligands. By the use of chemical software JChem (ChemAxon) it was found that mordant dye exhibiting stability in Fenton solution bears hydroxyl group with high dissociation constant, pK=2,57. On the contrary, another dye bearing hydroxyl with low dissociation constant, pK1=6,65, does not exhibit any inhibition in oxidation process. UV-Vis spectral studies of the complexes of several mordant dyes prove correlations with their stability in Fenton reaction, however some dyes exhibit no relationship of this kind.
Study on Antistatic Modification of Carbon Nanotube on Silk Fabric
Authors: Jiang Yu Chun , Chen Li Man , Huang Xun , Zeng Hua Ping , Zhang Jun Liang , Liu Zu Lan , Wang Shu , Zhang Yuan Song
Published: September 2013

Carbon nanotube is a new type of nanoscale materials, which has excellent adsorption property and electrical conductivity. In this paper, silk fabrics were antistatic modified by adsorption of carbon nanotube. The results indicate that the optimum modified conditions are summed up as follows: quality ratio of carbon nanotube and silk fabric is 1:5, pH value is 4, reaction temperature is 95°C and reaction time is 1.5 h. The antistatic property of silk fabric which modified by carbon nanotube is obviously improved.
Study on Alizarin Dyes on Polyester-Cotton Knitted Fabrics Dyeing in Supercritical CO2
Authors: Zhu Zhao Yu , Zheng Lai Jiu , Du Bing , Wei Ju , Qian Yong Fang , Sui Jun Feng
Published: September 2013

Using natural alizarin dyes to dye polyester - cotton65/35 knitted fabric in supercritical CO2 dyeing equipment, and analysis the influencing parameters including dyeing temperature, time and pressure. The parameters are optimized as following: dyeing temperature 115.21°C, dyeing time 71.42 min and dyeing pressure 26.22 Mpa. Adopting alizarin dyes to dye polyester-cotton65/35 knitted fabrics in supercritical CO2 could obtain a good dyeing effect, and the color fastness to rubbing and color fastness to washing of dyed fabrics meet The National Standard (GB18401-2003).
Determination of Dye Concentration in Two Dyes System Solution by Double Wavelength Spectrophotometry
Authors: Chen Cheng , Zhao Xiao Ming
Published: September 2013

To get the accepted related error between real and measured concentration,some mathematics methods may be used.After they are compared,double wavelengths spectrophotometry is choosen.This method has many advantages,such as simple operation, low demand and favorable effect.And the situation about determining the concentration and relative error of two components under different mixed proportion were discussed.Finally, the conclusion is indicated that double wavelengths spectrophotometry is a quite ideal method. The concentration of dye may be measured easily and the related error is quite low below 8%.
Salt-Free Dyeing of Cotton Woven Fabric with Reactive Dyes in Triton X-100 Reverse Micellar Media
Authors: Yi Shi Xiong , Deng Yi Min , Sun Sheng
Published: September 2013

The nonionic reverse micelles used for dyeing cotton fiber were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of reactive dye aqueous solution. The percentage of dye bath exhaustion in TX-100 reverse micelles and in bulk water was carried out and compared, respectively. The effect of inorganic salt was also discussed. The results indicated that the dyeing properties of the reactive dyes on cotton fabric increased with decreasing NaCl concentration and increasing initial dye concentration in TX-100 reverse micelle. The percentage of dye bath exhaustion obtained in reverse micelles was higher than that in bulk water.
Analyzing the Combustion Characters of Fire Protective Clothing Exposed to Flash Fire
Authors: Huangfu Xiao Dong , Wang Min , Li Jun
Published: September 2013

Combustion characters such as afterflame, color fading, thermal shrinkage, carbonization, smoke production provide a comprehensive reflection of the garment performance as a whole. Based on the flame manikin testing system, six kinds of garments which can be divided into two groups (PSA clothing and aramid clothing) were used for combustion experiments, and the combustion characters were analyzed under the same exposure conditions. Results show that the after flame time of PSA clothing was longer than that of aramid clothing, showing poorer flame resistant performance. Large areas of color fading happened to most of the test samples. The average thermal shrinkage of the PSA clothing is greater than the aramid clothing with similar weight and weaving structure. Clothing with larger fabric gram weight and thickness tends to have smaller shrinkage degree. The carbonization degree of PSA clothing was more serious than that of aramid clothing. Smoke amount may relate to the dying and finfish of fabric.
Sihouette and Structure of Huatouyao Women's Dress - Set Huatouyao Women's Dress in Naliang Town, Dongxing City, Guangxi as an Example
Authors: Bian Xiang Yang , Rong Ting
Published: September 2013

Yao is a nationality with multiple branches and colorful clothes. Researches on clothing of Yao Nationality are mainly on descriptions of culture and superficial characteristics of their clothes. Few of them carefully research on sihouette,structure and craftsmanship, so are the researches on Huatouyao Clothing. This article has made detailed record and research on Huatouyao Women's Dress at Fangchenggang, Guangxi from sihouette,structure and craft of dress through field investigation and actual measurement. It helps to make people know what Huatouyao Clothing looks like and it provides operable reference while recovering inheritance clothes.
Research on Reliability of Apparel Supply Chain Based on State Space
Authors: Zhao Xiao Hui , Zhu Zhi Tong , Liu Wen Hui , Dong Ya Wen
Published: September 2013

Apparel supply chain brings many profits and competitive advantage to the node enterprises, and at the same time it brings risk and uncertainty. The increases of supply chain risk and uncertainty causes apparel supply chain reliability problems. In the paper the definition of supply chain reliability is given. Based on the reliability model of node enterprises, the paper builds the supply chain reliability model based on state transfer. The method of state space is introduced to find the solution.
Analysis on the Cloud Shoulder Pattern of the Yuan Dynasty Fabrics
Authors: Liu Ke Yan
Published: September 2013

The cloud shoulder pattern with four weeping clouds shape commonly used for decorating the parts from collar to shoulder for clothing and shoulder part for blue and white porcelain can be traced back to persimmon calyx pattern of the Han Dynasty. In the Tang Dynasty, the pattern of a four-petal leaf as first went for pattern details change and later advanced into cross flower, developing into the usual pattern decorated on fabrics. Till the Song dynasty, persimmon calyx pattern combined with Ruyi cloud (auspicious cloud) and was applied to architectures. However, the Yuan Dynasty’s shoulder cloud pattern with four weeping clouds shape used for decorating shoulders of clothing or porcelain was generated from combination of Ruyi cloud persimmon calyx pattern and “Bo” which was used to keep necks from wind and sand for Nomads in northern part of the country and developed into the cloud shoulder pattern focusing on decorating the shoulder of clothing and widely was used for nobles’ clothing. Gradually, the pattern was used for decorating crafts such as blue and white porcelain and gold and silver ware in the Yuan Dynasty. The cloud shoulder pattern spread from nobles to folks and was popular for decoration.
Properties Study of ZnS Thin Films Fabricated at Different Substrate Temperatures by Pulsed Laser Deposition
Authors: Ming Zhen Xun , Ding Chao , Li Bing , Zhang Jing Quan , Li Wei , Wu Li Li , Feng Liang Huan , Wu Ju Dy
Published: September 2013

This paper focuses on physical properties of ZnS thin films.ZnS thin films were successfully fabricated on Fluorine-Tin-Oxide(FTO) substrates(in a vacuum chamber maintained at 10-6Torr) at the substrate temperatures(Ts) of 150°Cand 200°Cby pulsed laser deposition(PLD),respectively.The structural properties of the ZnS films were analyzed with a X-ray diffraction(XRD) spectroscopy;The surface morphology of ZnS films was examined using scanning electron microscopy(SEM). With the increasing of the substrate temperature,the intensity of the (111) diffraction peak increases clearly and the surface of the ZnS films was more homogeneous and more compact.The main phase of the films deposited at 150°C and 200°C are both cubic-zinc-blende structure.The transmission spectra of the films was measured by UV-Vis spectrophotometer(UV,model a Perkin Elmer-Lambda 950),it shown that the films have the high transmittance in the spectrum of the visible light range,and the optical energy gaps were 3.48eV and 3.54eV,corresponding to the substrate temperatures of 150°C and 200°C.The results shown that the PLD technique can fabricate the better ZnS thin films.
Influence of Thickness on the Structural, Electrical and Optical Properties of Al-Doped ZnO Films Deposited by RF Magnetron Sputtering
Authors: Chen Jian , Sun Yi Hua , Sun Xiao Hua , Huang Cai Hua
Published: September 2013

Transparent conducting aluminum-doped zinc oxide (AZO) films with different film thickness had been prepared on soda-lime glass substrates by radio frequency magnetron sputtering using a high density ceramic target. The structural, morphology, electrical, and optical properties of the AZO thin films were investigated by X-ray diffraction, scanning electron microscope, Hall-effect measurement and optical transmission spectroscopy, which were strongly influenced by film thickness. With the film thickness increasing from 140 nm to 710 nm, the resistivity decreases from 9.78 × 103 to 3.23 × 103 Ω.cm and an average optical transmission decreases from 88% to 80% in the visible range and the optical bandgap decreases from 3.47 to 3.24 eV.
Characterizations of Electrospark Deposition TA2 Alloy Coating on 7075 Aluminum Alloy Surface
Authors: Wang Ming Wei , Xin Wen , Zhao Xiu Jun , Ma Qin Yi , Li Shu
Published: September 2013

Electro-spark deposition (ESD) is a microwelding process that utilizes short duration of electrical pulses to deposit electrode materials to a metallic substrate. In this paper, taking TA2 bar as electrode, a deposition layer of thickness up to 40μm was built up to on 7075 aluminum alloy substrate by means of ESD. The deposition layer is metallurgical bonded to the substrate. The microstructure, phase composition, and micro-hardness of TA2 coating were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD) and micro-hardness test. The microstructure of the coating was mainly composed of TiN phase, Al3Ti phase, AlN phase and Al phase. Its micro-hardness reached 295 HV0.05, about 2 times as high as that of the substrate. The hardness at the cross-section of the entire deposition layer showed a gradient distribution.
Grain Refinement of Superalloy K4169 with Low-Voltage Pulsed Magnetic Field Treatment
Authors: Xie Xiao Hua , Chen Le Ping , Xiao Cheng Bo , Tang Xin
Published: September 2013

The influences of different pouring temperature and mold temperature on solidified structure of superalloy K4169 under low-voltage pulsed magnetic field (LVPMF) were investigated in the paper. The experimental results show that solidified structure of superalloy K4169 under LVPMF can be refined greatly with appropriate cooling rate of the alloy. The dendrite growth is restrained and the microstructure is changed from larger dendrite grains to smaller equiaxed grains. When the pouring temperature is at 1380 °C-1530 °C or the mold temperature is at 1000 °C-1300 °C, the increase of pouring temperature or mold temperature enhances the refinement effect of LVPMF processing. With the increase of the pouring temperature or the mold temperature, average grain size of the alloy decreases and the primary phase degrades from developed dendrites into equiaxed crystals under the LVPMF.
Study on the Electromagnetic Shielding Performance of Wool/Stainless Steel Wire Worsted Fabric
Authors: Yang Xu Dong , Peng Xiao Hui , Xu Hong Hao , Yan Xiong
Published: September 2013

Electromagnetic (EM) shielding effectiveness of fifteen woven fabrics which use different yarns as raw materials were evaluated and compared in this paper. Test samples were obtained through the change of yarn structure, the content of stainless steel filaments and process parameters. Fabric electromagnetic shielding effectiveness (SE) was analyzed in terms of the content of stainless steel filaments,fabric density and fabric tightness .The mechanism of electromagnetic shielding of worsted fabric with stainless steel filaments was further studied at different frequencies. The result has certain directive significance on developing high-performance woolen fabrics against electromagnetic radiation.
Research and Progress in Preparation of Boron Nitride Fiber via Organic Precursor
Authors: Zhang Zhao Huan , Zhou Ying Ying , Sun Run Jun
Published: September 2013

As a new-type ceramic fiber, boron nitride fiber has excellent performance, such as high thermostability and wave-transparent. Similar to carbon fiber, the preparation of boron nitride fiber mainly employs the conversion method via organic precursor. In this article, some works on the synthesis of organic precursor for boron nitride fiber are summarized. Advantages and disadvantages of these works are also mentioned, and the prospects for research trend of boron nitride fiber are viewed.
Synthesis and Characterization of Wholly Aromatic Poly (amide-sulfonamide)s by Solution Polycondensation
Authors: Liu Li Jian , Wang Da Zhi , Xu Tong Kuan , Jia Lin , Ding Feng , Zhang Shao Yin
Published: September 2013

Four wholly aromatic Poly (amide-sulfonamide) s (PASAs) were synthesized by the solution polycondensation from m-chlorosulfonyl benzoyl chloride and aromatic diamines in tetramethylene sulfone and substituted 2-Piucoline as the acid acceptor. The chemical structures of PASAs were characterized by FTIR, 1HNMR. Thermal properties of PASAs were investigated by TGA.
Fabrication and Fluorescence Characterization of the Polyimides with Different Molecular Weights
Authors: Lin Jia Qi , Zhang Pan Pan , Yang Wen Long
Published: September 2013

In this paper, a series of polyimide (PI) films with different monomer mole ratios between PMDA and ODA (0.980: 1, 0.990: 1, 1.000: 1, 1.010: 1 and 1.015: 1) were prepared in order to investigate the effect of molecular weight on optical properties. Inherent viscosity values were taken as a measure of the molecular weight. The fluorescence properties of the PI films have been measured. The fluorescence spectra show that three obvious emission peaks can be observed at 583 nm (1.00 dL/g), 594 nm (1.42 dL/g) and 603 nm (1.57 dL/g) respectively. In addition, emission peaks show red-shift with the increase of molecular weight, which can attribute to the decease of orbital energy caused by conjugated effect.
Mechanical and Thermal Properties of Natural Rubber Latex Modified by Purple Carbon Black
Authors: Fan Dan , Liao Xiao Xue , Liao Shuang Quan , Zhao Yan Fang , Sun Jie
Published: September 2013

Stable aqueous solution of purple carbon black (PCB) was prepared first and then added to prevulcanized natural rubber latex. The effects of the amount of PCB, silane coupling agent and the type of silane coupling agent on the mechanical properties of the vulcanized latex film were researched. The results show that the best mechanical properties were obtained when the vulcanized film was filled with 6 phr PCB modified by KH560. TG shows that thermal stability of the film with PCB modified by KH560 increased. DSC shows that the glass transition temperature of the film increased after adding PCB.
Study on Straw Liquefied Product Synthetizing Polyurethane Elastomer
Authors: Zhao Sheng Li , Xue Zhen Hua , Li Ya Bin , Huang Jin Tian
Published: September 2013

In order to take full advantage of straw liquefied product to make the best mechanical properties of polyurethane synthesis. This experiment studied on the Synthesis technology of polyurethane elastomer by straw liquefied product. Under the role of catalyst,by using butanol as a liquid agent, at 160 °C, 2h later ,we could obtain straw liquefied products, Synthesis of polyurethane elastomer with two-step method, through orthogonal test and the performance testing of the finished product . The results showed that: curing agent is 3% (1:33), the initial reaction temperature is 40 °C, curing time is 8h, the mechanical properties were the best. Key words: Straw, Liquefied product, polyurethane elastomer
Framework of Man-Machine-Environment Application System Engineering throughout Life Cycle of Large Scale Vessel
Authors: Shang Zhen , Zhu Shi Fan , Qiu Chang Hua
Published: September 2013

It has considerably practical significance to apply Man-Machine-Environment System Engineering (MMESE) on large scale vessel throughout its whole life cycle. At present, there are not too many researches on this topic in China, but specific tasks refer to a really wide range while developing separately without guidance from the very top. From the views of vessel system, life cycle system of it and MMESE discipline system, the MMESE application system for vessel is constructed; based on it and System Engineering, the three dimension application model for vessel throughout its life cycle is brought forth; based on it and Concurrent Engineering, the concept and framework of MMESE Application System Engineering throughout Life Cycle of Large Scale Vessel (MLM) is finally developed, which plays an important role in conducting actual projects.
Coordination of Design Processes in Two Perspectives of Computer Aided Design
Authors: Kotulski Leszek , Sędziwy Adam , Strug Barbara
Published: September 2013

The design process may be regarded as a compound of two sub-processes performed respectively on internal and external part of a building. Due to different specifics, constraints or standards for both of them, sub-processes are usually carried out separately. The potential problems related to such an approach may arise in areas where both environments share common elements, like windows, external doors, and so on. In the article we overview the mechanism of solving this issue by introducing a coordination between both design sub-processes, namely the external and internal one. Thanks to this an overall consistency of a design is preserved.
A Design of an Optical System of Liquid Filled Lens which can Adjust the Focus
Authors: Shaw Dein , Hsieh Hui An
Published: September 2013

The configuration of the system combines a liquid-filled lens, a flexible sensor membrane and a self-adjusted optical compensation device. We focus on optical compensation between the liquid-filled lens and the sensor membrane to make the system has good optical characters. For a single lens optical system, the curvy sensor membrane has better performance than flat type sensor in both the image quality of MTF, aberration and angle of view. To prove the idea, an optical measure system is developed and the optical system is also made. The experimental results show that this system do has a better performance in optical character.
Prosthesis Analysis Based on TRIZ
Authors: Flores-Luna Rosa Itzel , Dorador-González Jesús Manuel , Espinosa-Bautista Adrian
Published: September 2013

The Mechanical and Technological Innovation Centre (CDMIT) of the National Autonomous University of Mexico has a research area focused on the design of upper limb prosthesis. A large number of prosthesis have been developed and tested. This paper presents the analysis made to different proposals of myoelectric hands based on TRIZ. Two TRIZ tools were applied: The Innovation Situation Questionnaire (ISQ) and the Radar of Evolution. The analysis was made in terms of time, space and the user interface. The ISQ helps to better define the scope of the problem through six basic questions; each question provides a different view of the problem. The radar of evolution helps to make a selection of trends of evolution depending on the product or system, as an analogy of a benchmark. The analysis was made considering the state-of-the-art hand prosthesis: i-limb, be-bionic, Michelangelo and Myohand against the prosthesis prototypes developed by the CDMIT. The result of this tool is a diagram that reveals the level and opportunities of evolution. These opportunities imply a strengthening of research areas not only in the CDMIT but around the world. The conclusion achieved is that different design paradigms linked to bio-mimics criteria are needed to design more innovative user-friendly prosthesis.
Module Matching Method Based on the Gray Theory
Authors: Li Jiang
Published: September 2013

The matching method is used to select the most similar modular design scheme from the history product database. The existed methods are not efficient enough. A new matching method based on the gray theory was presented. The absolute correlation degree and the relative correlation degree between the target modular product and the history product were calculated respectively, and finally the comprehensive correlative degree was gotten, the most similar historical product was matched. In the end, the approach is illustrated with a hydraulic turbine case.
Factors Influencing Furniture Sales in High-Income Segments of Society
Authors: Kazemifar Mohammad Hadi , Khodadadeh Yassaman
Published: September 2013

With the increasing technological advances, people need more goods and services especially in consumerist societies. This increase in consumption along with technological advances leads to increase in the variety of peoples taste. Therefore, furniture companies try to design their products based on their customers needs. This study examines the factors that affect the furniture sales in high-income segments of the society. 42 students including 23 women and 19 men between 20 to 38 years, attending Kish International Campus at Tehran University, fill out questionnaires related to the beauty, comfort, color, quality, durability, price and brand of their preferred furniture. All data were collected and analyzed using statistical methods. Furniture with symmetric shapes are more desirable (p<0.0001) than asymmetric furniture. Wooden furniture has the highest demand (36%) while metallic furniture has the least demand (8%). These results showed users preferences and factors that affect the furniture sale in high-income families. Such studies can help adapting furniture design based on costumers need and may lead to improve companies furniture sales.
Study of the Technical Feasibility and Design of a Mini Head Screw Extruder Applied to Filament Deposition in Desktop 3-D Printer
Authors: Silveira Zilda Castro , de Freitas Matheus S. , Inforçatti Neto Paulo , Noritomi Pedro Y. , Silva Jorge V.L.
Published: September 2013

The purpose of this work is to present the study of the technical feasibility and functional design of an interchangeable mini head extruder based on a screw with variable section to be used in open-source desktop 3-D printers. The QFD matrix was used during the design planning where the non-commercial users’ requirements were established. Functional structure of the mini head extruder was organized to give support to the mechanical calculation. The choice of a feasible configuration allowed the pre-calculation of the main components of the proposed head which were: screw, barrel and motor system. The materials chosen for the mechanical and rheological calculations were polyamide and the biopolymer PCL, both in powder distribution. Apart from the mechanical design, supported by the QFD, and functional analysis, the mini head extruder was manufactured and assembled, showing its functionality to generate filaments with diameter of 0.7 mm from powder raw material. The complete mechanical and electrical design development and manufacturing of this mini head extruder were made in a period of 24 months. This systematic development demonstrated the importance of the design methodology during the development of the design process and its contribution to the design quality. Besides, the mini head extruder using screw will allow the generation of scaffold structures using biopolymers, as well as to enable comparative studies using different kind of polymers.
Influence of the Thermal Assembly Process on the Stress Distributions in Shrink Fit Joints
Authors: Lorenzo Miguel , Pérez-Cerdán Juan Carlos , Blanco Carmen
Published: September 2013

One of the most widespread procedures used for building a shrink fit consists in a thermal process in which the hub is heated and lately cooled while the shaft is placed at the assembly final position, so the joint is radialy set. In this paper the contact pressure in a shrink fit is analyzed by means of the numerical simulations using FEA method. We compare the results with those obtained by the alternative building fit process, i.e., the axial press insertion, and, with the ones given by the pressure cylinders theory. Relevant information revealed from numerical simulations, as the stress and strain state after the assembly process, could be useful in the design of shrink fitted joints improving their performance during their life in service.
Design of a Long Distance Unidirectional Piezoelectric Motor Based on Non-Resonant Inchworm Principle
Authors: Guo Wen Feng , Qu Jian Jun , Ding Juan , Qin Yan , Li Yan
Published: September 2013

The advantages of linear piezoelectric motor which has low velocity, large output force, non-electromagnetic disturbance and high response speed are concerned wildly in astronautic industry and manufactural industry. A unidirectional and linear piezoelectric motor has been designed based on these advantages. The stiffness and resonant frequencies of the clamping structure and driving structure are calculated by mathematic model. The characteristics of long distance, slow velocity and large output force are realized. This motor can be used in the equipment which needs long distance, small inertia, large driving force and disposable movement. The stiffness and resonant frequencies of clamping structure and driving structure, no-load characteristic and motion characteristics under different loads are tested in the experiment. The results of the stiffness satisfy the theoretical design. The no-load resonant frequencies are high and the maximum resonant frequency dwindles with increasing load.
Study on the Adsorption of Carbonized Micron Wood Fiber Filter for the Nanoparticle Emissions of Diesel Engine
Authors: Du Dan Feng
Published: September 2013

Carbonized Micron Wood Fiber (CMWF) has many merits of high filtration efficiency, low cost, green environmental protection and so on. Besides, it also has the properties of activated carbon, which makes its adsorption ability for nanoparticles emitted by a diesel engine much stronger. In this paper, the adsorption number density of the nonoparticles in the CMWF filter under the different conditions is simulated based on Grand Canonical Ensemble Monte Carlo Method (GCEMC). Moreover, the result of simulation is validated by a engine bench experiment. Theoretical deduction and experiment results both prove the simulation method can be applied to simulate the adsorption process of the nanopaticles.
Effective Forming Processes of Hub Forging from Aluminum Alloy AlCu2SiMn
Authors: Gontarz Andrzej
Published: September 2013

This paper presents results of theoretical and experimental research works on metal forming process of a hub. A typical technology of forging on hammer of this part with flash was discussed. Two new processes of a hub forging were proposed, characterized by large material savings in comparison with typical technology. The first process is based on forming without flash of a forging with axial cavity. The second one is connected with forming of forging from pipe billet. The realization of these processes is possible at the application of a press with three movable working tools. Theoretical research works were done on the basis of simulations by means of finite element method. Simulations were made mainly in order to determine kinematics of material flow in forging processes and precision of shape and dimensions of obtained products. The first of the proposed processes was experimentally verified and a product of good quality was obtained. Material consumption of the analyzed processes and other factors acting on their effectiveness were also compared.
Additive Tooling for Tube Hydroforming
Authors: Soe Shwe Pyi , Eyers Daniel Roy , Le Chi Hieu , Romli Awanis
Published: September 2013

The use of tube hydroforming in manufacturing is increasing in popularity, particularly in automotive applications where it offers numerous cost and well-recognized performance advantages over conventional stamping and welding processes. In this paper, the use of indirect Additive Tooling is explored in the creation of tool inserts to be used in the production of exhaust manifolds for the automotive industry. The principal focus of this research concerns the identification of operational issues arising from the exploitation of Additive Tooling, together with the suggestion of a number of techniques and solutions which may be applied to mitigate the problems inherent in the rapid manufacture of tube hydroforming tools.
Research on the Surface Roughness Parameters of Micro-EDM
Authors: Chen Zhi Jie , Shen Ji Hong , Dai Yun Tao
Published: September 2013

The surface topography errors of micro-EDM are mainly composed of surface roughness, surface waveness and so on. Research shows that the surface morphology provides a lot of useful information, which has serious influence on the friction and lubrication characteristics of the surface. However, for the micro-EDM surface topography evaluation problem, researchers have been using surface roughness parameters and evaluation method of mechanical process, which restrict the micro-EDM technology further development. On this account, the surface roughness parameters of micro-EDM have been deeply studied in this paper according to its technology characteristics and the surface morphology characteristics, therefore, the main researches and creative points are obtained, which the influence that the surface roughness of micro-EDM parts impact on their using performance is analyzed, and based on the surface morphology characteristics, some roughness evaluation parameters are given respectively according to peaks and valley, moreover, their numerical calculation are also gained.
A Conceptual Model for Sustainable Product Design
Authors: Romli Awanis , Prickett Paul , Setchi Rossitza , Shoe Shwe
Published: September 2013

This paper proposes a conceptual model to support sustainable product design. The approach develops an integrated multimodal decision making model which is to be introduced early in the design process, as the basis for the integration of the life cycle assessment into an Eco-design model. The model, which is based upon an adapted “House of Quality” analysis, supports designers when assessing the environmental impact of the product design. The resulting Eco-design model evaluates the sustainability of the designed product using criteria that consider the impact of manufacturing process, product usage and end-of-life (EoL) disposal strategy. This approach is demonstrated using a case study that considers the design of a set of crocodile medical forceps, in which the redesign of a new forceps is undertaken by considering all the parameters in the Eco-design model.
Rule Extraction from Support Vector Machine and its Application to Hot-Dip Galvanizing
Authors: Wang Jian Guo , Yang Bin , Zhang Wen Xing , Qin Bo
Published: September 2013

A new rule extraction algorithm based on convex hull for strip hot-dip galvanizing process monitoring is proposed in this paper. It overcomes the black-box problem of support vector machine. The zinc coating weight is used as the investigated subject. The sample datasets are trained by support vector machine rule extraction method, and the quantitative relationship can be obtained in the form of knowledge rules among input variables (such as the parameters of raw materials and control parameters of production) and output ones (the quality parameters), with which the production control parameters can be set and updated easily.
Innovative Approach for Teaching Graphical Engineering Focused on CAD/CAM/CAE Systems
Authors: Pérez-Cerdán Juan Carlos , Lorenzo Miguel , Reveriego Alejandro , Blanco Carmen
Published: September 2013

A new approach of the teaching of the subject Graphical engineering is developed at the Engineering School of the University of Salamanca, focusing the contents on the use of the CAD/CAM/CAE systems as useful tools for applying engineering problems related with the mechanical engineering instead of describing diverse software options. Thus, the contents of the subject are divided into two blocks, one devoted to the analysis of the results of simulation of movement of diverse mechanisms and the second devoted to the analysis of diverse cases of loading structural components by means of FEA module, both available in the Autodesk Inventor Pro suite which can be downloaded free by the students. This way, students can visualize and realize of the complexity of a design process in engineering.
Development of Buoy-Type Wave Energy Generating Device
Authors: Zhang Feng , Song Bao Yu , Li Kun , Zhang Song
Published: September 2013

In order to generate electricity by converting wave energy into mechanical energy, a buoy-type wave energy generating device is designed, it includes overall design, reversing gearbox design and buoy design. The test stand of wave simulation is set up and the rationality of generating device is verified by generating experiment.
Study on the Tribological Properties of PTFE-Based Composites Materials Sliding Pair under Extreme Environment
Authors: Zhang Feng , Sui Tian Yi , Song Bao Yu , Cao Yuan
Published: September 2013

In order to get PTFE(polyfluortetraethylene) composites of good friction and wear properties used in vacuum and low temperature conditions, do the tribological experiments of GF (glass fibre)/PTFE composites under vacuum and low-temperature environment. The results show that: with the increase of the GF size, the friction coefficient increases, with the increase of GF content, the friction coefficient increases.
The Research on Oil-Air Lubrication and Oil Lubrication in the Sliding Bearing
Authors: Li Li Quan , Liu Shao Gang , Wang Jin Li
Published: September 2013

In order to study the effect of oil-air lubrication on traditional sliding bearing, the experiments oil-air lubrication and oil lubrication have been done by using friction-abrasion testing machine. By means of measuring friction moment, the temperature rise of two different lubrication systems in the same conditions and studying the friction moment and the temperature rise of oil-air lubrication and oil lubrication with different load at the same rotating speed level, the results obtained show that when rotating speed and oil supply is at 210rpm and 1.4L/h level, the friction moment of traditional sliding bearing with oil lubrication increases significantly after the load 900N, and when rotating speed, oil supply and air pressure is at 210rpm , 30ml/h and 0.25MPa level, the friction moment of traditional sliding bearing with oil-air lubrication increases significantly after the load 1500N. The friction moment of oil-air lubrication and oil lubrication is almost the same before the load 900N, and after the load 900N, the friction moment of oil-air lubrication is much lower than the oil lubrication. The oil-air lubrication temperature rise is much lower than the oil lubrication in traditional sliding bearing with the same experimental conditions.