bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Processing Conditions on Properties of Ramie Roving Reinforced Polypropylene Composite
Authors: Bi Song Mei , Hong Jun , Chu Chang Liu
Published: September 2011

The effect of molding temperature, pressure, packing time and cooling methods on the properties of ramie roving reinforced polypropylene composites was mainly investigated in this paper. We used moulding process to prepare the ramie fiber/PP (Polypropylene) composites with the ramie roving as the reinforcement which were loosed into a single fiber state in the case of without affecting the fiber’s longitudinal straightness, and then investigated the influence of processing conditions to the mechanical properties of composites. With the DSC (Differential Scanning Calorimetry), the effect of cooling conditions on the crystallization of composites was also discussed. The result shows that taking ramie roving as the reinforcement will improve the infiltration properties of the PP matrix to ramie fibers, the reason is that ramie fibers have good orientation and it is loosely arranged in the ramie roving , all of these are benefit to form a good interfacial bonding between fibre and PP resin. Different processing conditions have great impact on the mechanical properties of composites. And the samples gained the best merchanical properties when the process conditions such as molding temperature, pressure, packing time are selected as 165°C, 8MPa, 10min. When the composites cooled together with the heating plate, its melting enthalpy is the highest and the crystallization properties is better than other cooling methods such as home temperature cooling and quickly water-cooling, and its tensile properties is the best.
Studies on the Low-Velocity Impact Response of Ultra-High Molecular Weight Polyethylene Laminated Composites
Authors: Zhang Dian Tang , Li Bao Dong , Sun Ying , Pan Ning
Published: September 2011

The low-velocity impact response of Ultra-High Molecular Weight Polyethylene (UHMWPE) laminated composites were studied by drop-weight experiments. Laminated composites were fabricated with unidirectional UHMWPE prepreg using hot-pressing process. Laminated composites of size 150mm×100mm were subjected to low-velocity impact loading at three energy levels of 15J, 25J and 35J. It is found that the slops of load-time and energy-time curves increase with increase in the impact energy. However, load-time curve shows that there are some fluctuations before the peak load was reached. Peak load and absorbed energy increase with increasing impact energy. However, time to peak load decreases linearly with increasing impact energy.
Prediction of Lifetime of Nylon 66 as an Airbag Material
Authors: Chen Ge , Li Jia Lu
Published: September 2011

Through the earlier accelerated aging tests (oven aging) of Nylon 66 yarns used in automobile airbags at the temperatures ranging from 60°C to 150°C, we have established a dynamics equation of tensile strength and aging time, and predicted the storage lifetime of this material in 25°C based on Arrhenius methodology and extrapolation method. Besides, the activation energy and thermal-oxidative aging parameter of Nylon 66 have been worked out from the test results. The study has showed that Nylon 66 airbag material has great thermal stability at high temperatures, and its storage lifetime under normal temperature is 4 times of its expected lifetime by design. The prediction results can be referenced for planning the service life of SRS or selecting airbag fabrics.
Study on Antheraea Pernyi Silk Fibroin Porous Materials
Authors: Mao Li , Wu Xi Long , Liu Yu , Lu Shen Zhou
Published: September 2011

Antheraea pernyi silk fibroin (ASF) solution was prepared by dissolving Antheraea pernyi silk fiber in lithium thiocyanate solution. The ASF/1,4-butanediol (ASF/BDO) blend porous materials were prepared with freeze-drying method. The structure of ASF was investigated by the X-ray diffraction method. The result showed that the structure of regenerated ASF scaffold was α-helix and random coil conformation. After ASF mixed with 5 wt% BDO, the structure of ASF was changed to β-sheet and the ASF scaffolds became water-insoluble. There were some small pores and fibrous structure in the big pores and the surface of pores was rough with a great many raised particles. The scaffolds with the average pore size of 300-1000μm and the porosity of 82-92% can efficiently be produced in this paper. Due to avoid the use of organic solvents or harsh chemicals, these new ASF based porous materials provide much more excellent biocompatibility and is expected to be applied to tissue regeneration scaffolds.
Property and Application of Rabbit Protein Powder
Authors: He Ya , Zhu Ruo Ying , Zhang Jian Fei
Published: September 2011

Rabbit hair is a kind of animal hair, containing a large amount of keratin which can be extracted. According to the preparation method of wool protein powder, rabbit hair powder was obtained, and the morphology of the protein powder was observed by microscopy. By reacting with the alkali solution, two kinds of protein powders which were prepared from rabbit hair and wool, were used in modification of polyester fabric. Experimental results showed that samples with rabbit hair protein powder has evident improvement in moisture absorption of polyester fabric compared with untreated and wool powder treated samples, while UV protective properties of sample treated by rabbit hair powder was unexpected decreased, a further investigation will carry out to explain it.
Preparation and Characterization of Chitosan/poly( Vinyl Alcohol) Composite Packaging Films
Authors: Li Ling , Jin Zheng Wei , Wang Jian Qing
Published: September 2011

A novel chitosan/poly(vinyl alcohol) composite packaging films were prepared by the casting method, and the effects of chitosan concentration on the structures, mechanical properties, permeability for oxygen and water vapor were discussed in this study. Mechanical properties of these films, which were evaluated by the tensile test and the barrier properties showed that the elongation at break (E) of the composite films decreased rapidly with the addition of chitosan, whereas, the tensile strength (TS) presented an almost opposite trend. Both the water vapour and oxygen transmission rate values were increased with the increasing amount of the chitosan in the composite films. Based on the obtained results, the better property of the composites films would be prepared chitosan/poly(vinyl alcohol) blends at a weight ratio of 3/5, and the tensile strength and elongation at break of the packaging films were 34.12 MPa, 40.24 % respectively. It was also observed that the water vapor permeability coefficient (Pv) and the oxygen permeability coefficient (P) of chitosan/poly(vinyl alcohol) composite packaging films prepared with weight ratio of 3/5 were 1.99×10-15 g•cm/cm2•s•Pa and 7.98×10-16 cm3•cm/cm2•s•Pa respectively. The composite films in this paper can be used in fresh-keeping or other fields as a kind of green packaging material.
The Development of a High Elastic 3D Prefabricated Composite
Authors: Liang Yun Xing , Chen Li , Liu Hai Wen , Liu Hua Wu
Published: September 2011

With the development of modern technology, fiberglass composite materials are widely applied. The advantages of fiberglass reinforced composite materials are high strength and light weight. In order to produce a prefabricated fiberglass composite, a machine chart was drafted for weaving the 3D fiberglass fabric with five layers. The obtained five-layer 3D fabrics were composited with polyurethane matrix. Afterwards, the performance of the prefabricated composites was tested and the optimal ratio of fiberglass to matrix was determined by statistical analysis.
Cationic Modification Process’s Depth Exploration of Cotton Fibers
Authors: Ren Li Yu , Yu Yan Ping , Zhang Rui Yin , Shen Chun Long
Published: September 2011

Abstract. The cationic modification process is usually used on the fabric to improve its dyeing property. In this paper, the cationic modification process which is used on cotton fibers is talked about and the pretreatment (such as scouring and bleaching) of cationic modification is made clear by means of testing the dyeing devoured rate of cotton fibers.
Preparation and Characterization of pH Sensitive Microgels with Semi-Interpenetrating Polymer Network Structure
Authors: Zhang Chen , Liu Xiao Yun , Zha Liu Sheng
Published: September 2011

The microgels with semi-interpenetrating polymer network (semi-IPN) structure based on cross-linked poly(N-isopropylacrylamide) (PNIPAM) and linear poly(acrylic acid) (PAA) were fabricated by one-step precipitation polymerization technique. The chemical composition of the microgels was determined by Fourier transformation infrared spectroscopy and elemental analysis. It was found that the PAA content inside the microgels decreased as the pH value of reaction media increased. The semi-IPN structure of the microgels was confirmed by transmission electron microscopy using uranyl acetate staining method. The pH dependent hydrodynamic diameters obtained by dynamic light scattering revealed that these microgels can reversibly shrink and swell in the pH range from 4.0 to 6.0. The semi-IPN microgels synthesized at pH 3.0 could undergo about 120 times volume change in the pH range.
Electropolymerization of Dialkoxythiophenes and its Morphologies
Authors: Chen Sheng , Tu Shi Jian , Wang Yue Chuan
Published: September 2011

Dialkoxysubstitued thiophene monomers were synthesized by the nucleophilic substitution and transetherification reactions. Electrochemical homopolymerization of 3,4-dioctyloxythiophene (DOOT), copolymerization of 3,4-dimethoxythiophene (DMOT) with DOOT were carried out via potentiodynamic and galvanostat methods in the supporting electrolyte. The polymers were characterized via cyclic voltammetry (CV), scanning electron microscopy (SEM), gel permeation chromatography (GPC). In the polymerization process, the electroactive copolymer was formed on the electrode surface with the Eonset(ox) at 970mV, which is 20mV higher than that of DOOT. The Eredox of the copolymer was approximately 15mV higher than that of POOT. The momorphology studies indicated that the electrochemical deposition of P(DMOT-co-DOOT) proceeds via a mechanism of nucleation and two-dimensional (2-D) growth.
In Situ Measurement of Reactive Dye Concentration Using Optical Fibre Sensing System
Authors: Tian Jun Ying , Zhao Xiao Ming , Zhang Jian Fei
Published: September 2011

To develop an online monitoring and control system for textile dyeing process, an optical fibre sensing system was designed and developed. This paper focused on the measurement of reactive dye concentration in dyebath using the optical fibre sensing system. The optical fibre sensors were proved to be practicable to measure the dye concentration in the dye concentration range during the dyeing process. The measured data was compared with the calculated value, and the linear relation of absorbance to dye concentration was examined. The experiment included single dyes and mixture with double dyes. Dyes concentration measurement accuracy was discussed. The results show that the absorbance is proportional to dye concentration within actual dyeing concentration range. Measured data of dyes concentration well matched the calculated value. The limitations and the approach for improving this optical fibre sensing system were discussed.
Study on AKD Improves Regenerated Paper Fiber Properties
Authors: Liu Quan Xiao , Xu Wen Cai , Lv Yu Bin
Published: September 2011

AKD is an important internal size for paper pulp fiber. With recycled economy development, regenerated paper fiber becomes an important resource. In this paper, AKD is used as a modification aid by internal sizing method. It shows that the change of the dosage of AKD influences regenerated paper fiber Cobb value, but has no influence to paper surface strength. The proper pH value is from 7 to 9. The temperature has no influence to regenerated paper fiber Cobb value and paper surface strength. Appropriate modified starch is good for AKD modification fiber and increase of the surface strength of paper made from modified fiber by AKD. Amphoteric starch is better than cationic starch. Other added substances such as PEI, MPEI and PAE can improve the modification of paper fiber modified by AKD. So the adsorption of modified paper fiber decrease and the surface strength of paper modified fiber increase.
Synthesis of Functional Polypropylene as Efficient Dispersing Agent for Carbon Nanotubes
Authors: Ling Xin Long , Wei Yi Zhe , Zou Li Ming , Xu Su , Wu Jun
Published: September 2011

Carbon nanotubes (CNTs) have been used in many materials due to their interesting properties. But CNTs do not disperse well within apolar polymer matrices such as polypropylene. Recently, polypropylene-graft-maleic anhydride (PP-g-MA) was used as a compatibilizer to improve the dispersion of CNTs within polymer. Disappointingly, the dispersion of CNTs was not expected. Here, utilizing 4-methylbenzenesulfonic acid as catalyst, PP-g-MA is chemically modified with phenol in dimethylbenzene. The resulting product (PP-g-PH) is characterized by the elemental analysis, fourier transform infrared spectra (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The dispersions of CNTs within PP-g-MA and PP-g-PH are studied.
Study on Measurement of Chromium Content in Ramie through UV Spectrophotometry
Authors: Li Jian Qiang , Pan Qing Shan , Zhang Ru Quan , Zhou Xiao Jie
Published: September 2011

In this paper, UV spectrophotometry was used to test the chromium content of bast fiber of ramie and diphenylcarbazide (DPC) was used as color reagent. The optimal technology was: dropping volume of phosphoric acid 0.4～0.6 mL, DPC content 2.0~4.0 mL and coloration time 5-10 minutes. The results showed that complexes were formed from Cr (VI) ions and DPC under phosphoric acid condition. There was a maximum positive absorption peak at the 540nm. Cr (VI) concentration (in the range of 0.004～1.000 mgL-1) and the absorbance (A) of complex obeyed the Lambert-Beer law.
Highly Soluble and Transparent of Novel Polyimides Containing Trifluoromethyl and Cyclohexane Units
Authors: Mo Xin , Li Guang , Jiang Jian Ming
Published: September 2011

Two novel polyimides(PIs) were polymerized from 1,4-bis((4-amino-2-(trifluoromethyl)phenoxy)methyl)cyclohexane, with aromatic tetracarboxylic dianhydrides using the typical one-step method. The inherent viscosity of the PIs were around 0.90dL/g, and they exhibited an excellent solubility and optical property. They were readily soluble not only in some strong polar solvents such as N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide (DMAc), N,N-dimethylformamide (DMF), but also in some low-boiling-point solvents such as chloroform (CDCl3), and tetrahydrofuran (THF). The PIs film showed high optical transparency and colorless with cut-off wavelength in 332nm and 338nm. Meanwhile, the temperature of 10% weight loss in air and nitrogen were higher than 441°C and 449°C respectively, and their glass-transition temperature (Tg) were higher than 348 °C. Furthermore, they possessed good mechanical properties with tensile strengths of 69–71MPa, elongations at break of 11.6–15.4% and low moisture absorption (<2%).Due to their properties, the polyimides could be considered as photoelectric and micro-electronic materials.
Processing Technology and Characteristic Evaluation of Polylactic Acid/316L Stainless Steel Composite Braids with Hydroxylapatite Deposition
Authors: Lin Jia Horng , Chen Wen Cheng , Hu Jin Jia , Chen Yueh Sheng , Wen Shih Peng , Lou Ching Wen
Published: September 2011

Biodegradable polymer has been widely used in surgical suture, dressing, artificial bone and other bone-related applications. Studies have demonstrated that metals, such as titanium, titanium alloys or 316L stainless steel, can be widely used in dental and maxillofacial surgeries. The present study aimed to fabricate a scaffold with a blend of multilayer polylactic acid (PLA) ply yarns with 316L stainless steel (SS) braids, which was then immersed in simulated body fluid (SBF), forming the PLA/SS composite braid with hydroxylapatite deposition. After being immersed in SBF for 14 days, the PLA/SS composite braid was covered with precipitate which was confirmed to be apatite deposition according to surface observation and EDS evaluation.
Preparation and Optical Properties of Rare Earth Doped Y2O3 Nanoparticles Synthesized by Thermal Decomposition with Oleic Acid
Authors: Takahashi N. , Gubarevich A. , Sakurai J. , Hata S. , Tsuge T. , Kitamoto Y. , Yamazaki Y. , Odawara O. , Wada Hiroyuki
Published: September 2011

The synthesis by thermal decomposition of rare earth doped yttrium oxide nanoparticles was investigated. The elements of the rare earth were europium, which showed strong fluorescence, and erbium, which indicated upconversion properties. Metal-oleate complex was used as a precursor. The results of Scherrer’s equation and SEM indicated that nanoparticles were successfully synthesized. Appropriate thermal decomposition time increased fluorescence intensity of europium activators by completion of thermal decomposition of oleic acid, while too long thermal decomposition time decreased the fluorescent intensity. Fluorescence of erbium activator was observed after annealing, while it was not observed before annealing because of stronger fluorescence of oleylamine.
Research on Design of Artistic Style of Automotive Interior Fabric
Authors: Gao Shan , Hu Li Ping
Published: September 2011

With the development of the automotive market, automotive interior fabric design becomes an important category of textile design. The design of automotive interior fabric in our country is more focused on the design and research of comfort, safety, health and other functional aspects. At the same time, the artistic and personalized decorative design hasn’t been paid enough attention .The material quality, the color and pattern design of the automotive interior fabric play an important role in shaping the style of overall vehicle interior environment. The diverse styles of the automotive interior fabric design have an important practical significance for the car companies to create distinctive products and meet the needs of different consumers.
Peculiarities of Kinetics of New Fire Proof Fabrics Thermal Breakdown
Authors: Zhilisbayeva Raushan , Mokeeva Nataliya , Mansurov Zulhair
Published: September 2011

According to theoretical consideration of metallurgists’ protective clothes reliability increase problem all the major questions, connected with obtaining of new kinds of composite materials and their properties regulated by special requirements, were experimentally studied. There is suggested a formation of new fireproofed fabrics, which have high protective properties to the melted drops of metal, injuring the special cloth of the metallurgist.
Thermal Behaviors of N-Octadecylated Poly( Ethyleneimine) with Different Grafting Ratios
Authors: Yin Yi Ping , Shi Hai Feng , Li Li Juan , Zhang Xing Xiang
Published: September 2011

A series of N-octadecylated polyethyleneimine (PEI18C) comblike polymers with different grafting ratios, through N-alkylation method, have been successfully prepared. The chemical structure and thermal behavior of PEI18C comblike polymers with different grafting ratios has been characterized by Fourier transformed infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). Experimental shows that C18 alkyl groups have been successfully grafted onto PEI backbones, and the thermal behavior of PEI18C comblike polymers with different grafting ratios exhibit the linear increment with the grafting ratio of alkyl groups. It can be attributed to the effect of the grafting density of alkyl side groups along PEI backbones. The detailed investigation and discussion is carried out from the viewpoint of side chain crystallization and molecular packing behaviors.
Properties of Enzymatic Hydrolysis Corn Starch Sizing Agent Modified in Supercritical Carbon Dioxide
Authors: Wang Yue Juan , Fu Hong Jun
Published: September 2011

This paper describes an experiment of Corn starch treatment with α-amylase under the condition of supercritical CO2 at 50°C, 11MPa, and investigates the effects of different water content on supercritical CO2 treatment of corn starch. The results demonstrate that the viscosity of the treated starch is much lower than that of untreated starch, as well as the variance ratio of the viscosity is up to 96%. The optimum water content for the degradation of the enzymatic reaction is 2%;when water content is up to 3%, the viscosity of the serosity is 5Mpa•s, and the sizing performance reaches the best.
The Application of Finite Element Analysis Software MSC.Marc in Numerical Simulation of Fabric
Authors: Li Cui Yu , Wang Rui
Published: September 2011

The draping and buckling of woven fabric are simulated with the finite element method based on the micro-mechanical constitutive model and orthotropic constitutive model under gravity load. Compared with the traditional orthotropic mechanical model of the fabric, the micro-mechanical constitutive model characterizes the special properties of woven fabric due to its micro-weaving structures. The woven fabric sheet is discretized with 8-nodes shell elements which are designed for finite deformation and suffice to describe the large rotation of fabric sheet during draping, for the sake of simplicity, the nodes of the fabric sheet on the edges of the desk are assumed to be fixed. Compared with the experimental ones, the simulation results with the micro-mechanical constitutive model are in good agreement with the observations. The work paves the way for developing a virtual clothes trial system.
Microwave Effect in Sisal Fiber Degumming
Authors: Wang En Guo , Chen Wen Xing , Wu Jia Ye
Published: September 2011

Alkaline cooking is common method for fiber degumming. Microwave was used to improve the degumming process of sisal fiber in this study, and the influence of degumming time, degumming temperature, and the solution composition on degumming result under microwave heating was probed. The experiment results show that microwave heating has significant effect for sisal fiber degumming. The optimal parameters for sisal fiber degumming, such as microwave heating at 100 °C for 30min in 3% NaOH solution, were also obtained.
Effect of Grafting Polymerization Reaction on the Structure and Properties of Hemp Fibers
Authors: Hao Xin Min , Wu Jun Nan , Chen Jian Yong , Yang Yuan
Published: September 2011

The grafting polymerization reaction of hemp fibers and acrylonitrile was studied in this paper, discussed hyperchromatic solution of hemp fibers. The morphology, structure and chemical composition of hemp fiber after and before grafting polymerization treatment were analyzed through SEM, XRD and FTIR. Results showed that grafting percentage and dyeing percentage were all enhanced because of grafting polymerization treatment on hemp fiber.
The Control on Data Transmission of Multi-Bar Warp Knitted Machine
Authors: Zheng Wei , Zhou Jin Liang , Peng Jin Min
Published: September 2011

Mechanism controlling longitudinal movements of guide bars in a warp knitting machine is still employed in many factories in China. But it is use a lot of time in order to change the type of fabrics. This sort of mechanism is gradually replaced by stepping motor that controlled by microcomputer. So, it is need to send data that guide bar need to move from computer to microcomputer. A circuit of transmission data is designed. The serial communication uses port of RS232C and potential convertor MAX232ACPE without model. There are use only three lines of RXD, TXD and GND of the serial communication port in the microcomputer (80C51). The protocol of transmission data is programmed. The serial communication baud rate at 2400 is set. The data that control movement of guide bars can be transmitted rightly.
Study of Flow Field in Compact Spinning with Pneumatic Groove
Authors: Liu Shi Rui
Published: September 2011

In the paper the structure of the compact spinning with pneumatic groove is introduced and the characteristics of three-dimensional flow field of the compact spinning with pneumatic groove are also investigated. Results from this research confirmed that In the compact zone, the air flows to the groove and enters the inner hollow of the slot-roller through the round holes, and the air on both sides of the groove condenses to the center of it and flows to the round holes; It is beneficial to compact the fiber and make the fiber slip to the bottom of the groove with shrink shape; the velocity and negative pressure are both not homogeneous, as the round holes are not continual, and the gradient of static pressure and velocity in compact zones are also perceptible.
Non-Isothermal Crystallization Behaviors of Poly (Trimethylene Terephthalate Isophthalate-Co-Polyethylene Glycol) with Lower Melting Point
Authors: Yao Yu Yuan , Cui Lian Chen , Liu Heng Shan , Huang Zhi Chao , Chen Wen Xing
Published: September 2011

The non-isothermal crystallization behaviors of poly (trimethylene terephthalate) (PTT), poly (trimethylene terephthalate-co-isophthalate) (PTTI) and poly (trimethylene terephthalate isophthalate-co-polyethylene glycol) (PTTI-PEG) were investigated using Differential Scanning Calorimetry (DSC). The experimental results showed the crystallization temperature of PTT, PTTI and PTTI-PEG increased when the heating rate increased, and the Avrami exponents n of PTT, PTTI ranged from 3.5 to 5.5, and it was assumed that the non-isothermal crystallization mechanism for PTT and PTTI was the combination of homogenous and heterogeneous nucleation. However, the n value of PTTI-PEG was below 2.5, and the non-isothermal crystallization mechanism was ascribed to heterogeneous nucleation different from that of PTT and PTTI. The activation energy of PTTI increased with the IPA ratios increasing, and the activation energy of PTTI-PEG was the highest, suggesting that the crystallization rate was more sensitive to the temperature in comparison with PTT. Therefore, it was of great importance to control the temperature in processing.
Characterization of Electrospun Poly(Lactic Acid)/polyaniline Blend Nanofibers
Authors: Zhang Hui Qin
Published: September 2011

In this study, composite nanofibers of polyaniline doped with dodecylbenzene sulfonic acid (PANI-DBSA) and Poly(lactic acid) (PLA) were prepared via an electrospinning process. The surface morphology, thermal properties and crystal structure of PLA/PANI-DBSA nanoﬁbers are characterized using Fourier transform infrared spectroscopy (FT-IR), wide-angle x-ray diffraction (WAXD) and scanning electron microscopy (SEM). SEM images showed that the morphology and diameter of the nanofibers were affected by the weight ratio of blend solution.
Preparation and Properties of Nano-Silica/calcium Alginate Blend Fibers
Authors: Wang Feng Jun , Ji Quan , Zhang Jian Jun , Tan Li Wen , Quan Feng Yu , Xia Yan Zhi
Published: September 2011

Calcium alginate fibers and nano-silica/calcium alginate blend fibers were prepared by the mean of wet spinning at the same spinning condition. The effect of nano-particles SiO2 on the structure and properties of alginate fibers were studied via many tests. The results showed that the tenacity of blend fibers increased with the growth of the content of SiO2 ranging from 1% to 5%, however, the tenacity of fibers became worse when the content of SiO2 was more than 5%. The effect of SiO2 content on hardness and tribological properties of the calcium alginate fiber was studied. The morphologies of the fibers surfaces were examined with a Scanning Electron Microscope (SEM). The result showed that the surface of blend fibers was still smooth when the consent of SiO2 not up to 7%, the best surface was obtained when SiO2 content was 5%. The incorporation of SiO2 also affected the absorption property of alginate fiber and made it decrease with the increase of SiO2 content. The structures of calcium alginate fibers and nano-silica/calcium alginate blend fibers were studied by infrared spectrum.
Preparation and Characterization of Melt-Spun Poly( Acrylonitrile-Methylacrylate) Hollow Fiber
Authors: Peng Wei Wei , Han Na , Tang Xiao Fen , Liu Hai Hui , Zhang Xing Xiang
Published: September 2011

In this study, a 85/15 AN/MA copolymer (acrylonitrile – methylacrylate copolymer with feed ratio of 85/15 mol%) was synthesized by emulsion polymerization at 60 °C, and then the copolymer was used to produce hollow fiber (abbreviated as PAN hollow fiber )by melt spinning using a single screw extruder machine. The PAN hollow fiber was characterized by using Scanning Electron Microscope (SEM), Thermo-gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). The hollow fiber of melt-spinning PAN with high hollow rate of 51.1% has a homogeneous wall and regular section. The hollow fiber is potentially used as raw materials to fabricate heat preservation fabric for comfort clothing.
Research on Ink-Jet Printing Process of the Leather
Authors: Li Chun Hui , Wang Jian Ming
Published: September 2011

This research studies the effect of penetrant, formic acid, sodium bicarbonate and steaming time on the rubbing fastness and K/S value of printed leather. The results show that the optimum concentration of sodium bicarbonate is 10 g/L in the first step of the leather pre-treatment. The optimum concentration of penetrant is 20g/L and the PH of pretreatment solution is 3 in the second step of the pre-treatment. The wet and dry rubbing fastness reaches grade 3 and 4-5. The pattern on the printed leather is clear and fine.
Performance of Pearl-Fiber Blended Wrinkle-Free Fabric
Authors: Zhu Jin Zhong , Ma Qin , Zhang Jun Ying
Published: September 2011

To better understand and perform of using pearl fiber characteristics, improve the development of targeted clothing, based on the fabric common performance such as comfort, wrinkle-free performance and safety in this article, to carry out the performance testing for 65/35 two-ply cotton / pearl plain jacquard imitating silk high-grade wrinkle-free fabric, in which mainly test the fabric moisture absorption, water vapor permeability, air permeability, anti-crease, security. Then concluded that the wrinkle-free performance of the 65/35 two-ply cotton / pearl plain jacquard imitating silk high-grade fabric is good, and the fabric has good wearability and value.
Preparation of Aligned Polysulfonamide Nanofibers by Magnetic Electrospinning
Authors: Liu Li , Zhou Jie , Huang Xing , Xiao Chang Fa
Published: September 2011

Preparation of uniaxially aligned nanofibers by electrospinning has been a new research hot spot in recent years. Well-aligned polysulfonamide (PSA) nanofibers with the diameter of 200nm were successfully prepared by magnetic electrospinning with the distance between the two magnets of 8cm. The key to the success of this method was the use of a collector composed of two permanent magnets to suffer an applied magnetic field. And the mechanism of magnetic electrospinning was also discussed in detail.
Reinforcement of Laminated Veneer Lumber with Ramie Fibre
Authors: Wang Zhi Qiang , Lu Xiao Ning , Huang Xiao Juan
Published: September 2011

This paper describes a preliminary investigation on the use of ramie fibre/ phenol formaldehyde (PF) composite to reinforce laminated veneer lumber (LVL). This research was conducted in two phases. Phase 1 the ramie fibre was treated with KH-550 silane coupling agent. Phase 2 different numbers of sheets ramie fibre/PF were added in different location of LVL to reinforce. The reinforced LVL was hot pressed at one time. A control group of unreinforced LVL was also manufactured. The results showed that the improvement in level shear properties of reinforced LVL was obvious no matter what loading direction was perpendicular or parallel. The improvement in modulus of elasticity (MOE) and modulus of rupture (MOR) of partial reinforced LVL was obvious too. Preliminary results showed that using ramie fibre composite to reinforce LVL was possible. This research will further broaden the application field of natural fibres, and provide a new improvement way for wood based composite.
Study on Properties about Bamboo Yarns
Authors: Tian Lin , Tan Lei , Yang Qing Bin
Published: September 2011

In order to understand the basic performances of bamboo yarns, the tensile strength, abrasion resistance and hairiness of yarns are analyzed through the comparison of bamboo yarns, cotton yarns and ramie yarns. Bamboo yarns show a higher strength, a lower breaking elongation, a better abrasive resistance and an obvious hairiness. Because of the existence of uneven fineness, the strength of bamboo yarns display a higher level of unevenness than cotton yarns and ramie yarns. After moisture absorption, the strength, initial modulus and work to break will increase remarkably.
The Influence of Dye Concentration on Kubelka-Munk Fundamental Optical Parameters of Fabric
Authors: Yang Hong Ying , Zhou Jin Li , Que Zhi Wen , Ma Xiao Dan
Published: September 2011

Kubelka-Munk theory and a functional hypothesis on the relationship between colored turbid materials and colorant concentration (the so called additivity color-mixing law) work together and play an important role in color science and technology. This paper is to investigate the relations between the dye concentration and the Kubelka-Munk fundamental optical parameters through a series of systematical experiments, data processing and analyzing on fabrics dyed by disperse dyes. The experimental results question the hypothesis.
Discussion on Production of Flat Cross-Section Industry Polyester Filament
Authors: Wang Lin A , Wang Yan Wei , Deng Zhao Xi , Xia Xue Lian , Liu Wen Tao , Han Su Qin , Zhu Cheng Shen
Published: September 2011

In this paper, the flat cross-section industry polyester filament was produced. The influences of the spinneret and the spinning parameters on fiber properties and quality were discussed. The product have good cohesion and special luster. It can enhance the surface smoothness of the fabric, which improve the coating effect, wider the application.
Study on the Co-Extrusion Process Morphology and Performance of Skin-Core Bicomponent Fiber
Authors: Gan Xue Hui , Liu Na Na , Ma Xiao Jian , Liu Qiang , Yang Chong Chang
Published: September 2011

In fiber melt spinning, a bunch of polymer melt filaments are continuously drawn and simultaneously cooled with air in order to obtain solidified yarns, which later compose the synthetic fiber in the bobbin. Melt spinning is a basic non-isothermal operation in the production of synthetic fibers, and the velocity and temperature fields in the filaments can be useful to control the quality of the final product. Therefore, the research of the temperature and the speed in the spinning path will be very important. Based on the theory of melt rheology, the co-extrusion morphology and performance of polymer melts PA6 /PET which extrude from circular spinning porous are simulated using finite element method. The effects of the fluid flux ration、cooling air temperature and winding speed on co-extrusion fiber interface and spinning process temperature are analyzed. And the simulated results show that the interfacial offset increases with the increase of the flow rate ratio of two polymers; changing the cooling air temperature, the temperature distribution has the same trend; low winding speed is conducive to the convergence of stretching rate. The simulated results can dynamically and quantitatively reflect the melt flow process, and these results can make guiding sense to engineering application.
The Practice of Sizing for Super Fine Cotton Fabrics with Positive and Negative Hard Twist on the Warping and Sizer
Authors: Guo Ai Lian , Li Jia Lu
Published: September 2011

Sizing practice of the high count cotton hard twist yarn at the warping and sizer was researched. Key technologies in producing such material, such as the design of yarn structure, special spinning and preparatory technology, new sizing and weaving technologies were described in detail. The ratio of first grade of the fabric produced is 97%, which has reached the international advanced level. This paper provides some new technologies for sizing the high count cotton hard twist yarn.
The Green and Efficient Degumming Technology of Broussonetia Papyrifera Fiber
Authors: Wang Hui Ling , Zhou Bin , Hao Rong Yao
Published: September 2011

Degumming technology of broussonetia papyrifera fiber with ultrasonic wave- microwave assisted to chemic technique and alkaline pectinase was introduced in this article. Practice showed that this degumming technology had the characteristics of efficient, little pollution and excellent fiber performance index. It would have broad prospects in the degumming process of broussonetia papyrifera bark and other similar material.
Design and Weave on Seamless Filter Bag with Three-Dimensional Angle-Interlock Tubular Structure
Authors: Li Xin E , Ren Yi
Published: September 2011

The advantages of the bag house are expounded in this paper. The some technical parameters of the filter bag are introduced. The weaving plan of three-dimensional angle-interlock tubular fabric is designed. The key points of weave production are explained. Use of angle-interlock tubular structure can weave seamless and thick the filter bag, and improve the filter efficiency of woven fabric. The development of seamless filter bag save sewing process, and improve the production efficiency, and save cost. The seamless filter bag with three-dimensional angle-interlock structure can be widely used to a lot of areas of flue gas filter. It will play a positive role to protect the environment.
Study on the Composition and Explicit/implicit Effect of Woven Texture
Authors: Sui Jian Hua , Xiong Fang , Mo Jing Yu
Published: September 2011

The article discusses the impact of composition elements of fabric on explicit/implicit effect of woven texture, which aims to form basic ideas of designing fabric appearance effect. Based on analyzing the composition of fabric texture, the author highlights the effect of fabric composition elements, such as materials, weave and density, on the clarity of fabric texture, The result shows that the weave grain will be clearer when the twists of warp and weft yarns are in the same direction. The weave grain will be less clarity as the increase of fabric voidage. The clarity of Jacquard fabric depends on the basic weave and yarn direction.
Processing Flax/ Bemberg/ Bamboo Charcoal Fiber Blended Yarn
Authors: Sun Ying
Published: September 2011

In order to obtain the lightweight and high quality flax class knitted fabric, Spins the high-count flax class knitting gauze are solves the question key . This thesis from the Spinning and Selection of raw materials, The teclmology of the high quality blended knitting yarn of flax fiber / bemberg fiber/bamboo charcoal fiber were manufactured by rotor spinning process, is diseussedin ,and through the comparison of different options for the optimization of process parameters the optimization of process parameters.
Multi-Objective Optimization of Blending Ratio of Outlast Fiber/Cotton Blending Yarn
Authors: Zhang Yong Fang , Sun Bu Kun , Yang Yan Li , Han Chao Feng , Chen Wei , Li Meng Meng
Published: September 2011

Trial spinning was done at 11 blending ratios (of Outlast fiber/cotton), namely 0/100, 10/90, 20/80, 30/70, 40/60, 50/50, 60/40, 70/30, 80/20, 90/10 & 100/0. By test, analysis and calculation to the targets of breaking strength, moisture regain, fusion enthalpy, crystallization enthalpy, etc. and curve simulation to them with origin7.5, an unique objective function was set in the way of objective optimization. Then lingo9.0 was applied to determine the optimal blending ratio of Outlast fiber/cotton blending yarn and it was concluded that at about 60% of Outlast fiber content, the ratio is the best, i.e. the blending yarn has the best targets in general.
Grey Simulative Effect Digital Jacquard Fabric Design with Full-Color Compound Structure
Authors: Zhou Jiu , Tang Lan Qian , Hu Ding Ting
Published: September 2011

Research on structural design of grey simulative effect jacquard fabric is the key to obtaining nice grey shading effect of fabric. In this paper, by merging the characteristics of traditional manual design method and the application of digital design technology, a design method of grey simulative effect jacquard fabric were introduced with design illustrations, and this study is carried out to analyze the relationship of structural design and fabric effect via increasing a new grey layer. Differs from the effect of traditional grey simulation jacquard fabric, the design innovation of grey simulative fabric are capable of producing black-and-white simulative effect accurately and meeting the technical requirements of mass production for achromatic jacquard fabric. It provided a new design concept for digital jacquard creation.
Development of Fabric Knitted by Outlast Blended Yarn
Authors: Xu Rui Chao , Liu Yun , Zhang Yi Ping
Published: September 2011

The outlast rayon fabric reduce perspiration, prevent overheated, maintain cool, increase comfort, and can reduce the surface temperature when the weather is oppressive. The Outlast plain elastic and the jersey knitting fabric is designed and developed. Cautions that in weaves, pre-treating and dyeing process are pointed out. So it provides a theoretical basis for researcher to develop comfort textiles having smart temperature regulation function.
Transverse Compression Properties of Textile Materials
Authors: Kelly Piaras Alphonsus , Bickerton Simon , Cheng Jonathan
Published: September 2011

The response of textile materials to transverse compression is of great importance in many applications. In this paper is discussed the mechanical properties of textile materials when subjected to transverse compression. The response of a textile to load is very non-linear and inelastic. The response is viscoelastic (there are rate effects) and plastic (there are permanent deformations). It is shown that energy is stored in a textile when it is loaded, and that some of this energy is not released when the material is unloaded, but instead is locked into its structure. This locked energy cannot be released unless the structure is placed in tension. A thermomechanical framework is introduced which incorporates the textile locked energy. Models are developed which predict well the response of textiles to load.
Pattern Generation Based on Julia Set and its Application in the Design of Seamless Underwear Products
Authors: Chen Li , Zhang Rui
Published: September 2011

In order to improve the design capacity of knitted fabric pattern and explore new design thought, this article studies the fractal image generation of Julia set and applies it into the pattern design of seamless underwear products. It adopts VB programming to generate Julia set pattern based on escape time algorithm, and then uses part imaging and amplification or changes the function orders to get a lot of colorful patterns. When these generated patterns are imported under the help of Photon software, color part in the patterns will be replaced with pre-designed fabric patterns and finally comes with patterns identifiable to seamless underwear knitting machine. Such method greatly expands the design thoughts of seamless underwear products.
Research on Influence of Pre-Tension on Elongation Percentage at Specified Load for Knits
Authors: Wei Lin Na , Chen Li Hua
Published: September 2011

In this paper, the influence of pre-tension on elongation percentage at specified load for knits was studied .First of all, initial elongation and elongation percentage at specified load for different retractility knits were tested and analyzed at different pre-tension. And then significance of influence of pre-tension on initial elongation and elongation percentage at specified load for knits were analyzed by means of variance analysis. Results show that the pre-tension has significant influence on initial elongation for different retractility knits, and it has no significant influence on elongation percentage at specified load for little retractility knits, and it has significant influence on elongation percentage at specified load for well retractility knits. The greater the pre-tension is, the more significant the influence is, Therefore it is suggested that pre-tension is generally less than 0.1N in the test.The research results can provide a certain reference to stretch and recovery test for knits and test standard recension .
Design and Property Analysis of Woven Spacer Fabric Sandwich Panels
Authors: Jia Li Xia , Wang Rui , Liu Jun Mei
Published: September 2011

Two kinds of woven spacer fabrics were designed and woven with high strength low extension technical polyester filaments. Then the sandwich composite panels were built by filling polyurethane foam in the space of the fabric and combined the epoxy resin on the surface of the fabric by means of handle paste shaping craft. Finally the property of the composites，including the flexure, impact resistance and compression performance, were measured. The experimental results showed that the woven spacer fabric sandwich panels have high flexibility and rupture toughness. When the stesses of bending, impact and compression were relieved, No visible distroy of the integral panel structure was observed.
Preparation and Characterization of PHB/PLLA/PEO Composite Ultra-Fine Fibers via Solution Dry-Spinning Technique
Authors: Du Jiang Hua , Yang Qing Fang , Fan Xiao Dong
Published: September 2011

Poly (3-hydroxybutyrate) (PHB)/poly (L-lactide) (PLLA)/poly (ethylene-oxide) (PEO) composite Ultrafine Fibers were prepared by solution dry spinning technique. Scanning electron microscope (SEM) and X-ray diffraction (XRD) were used to characterize the PHB/PLLA/PEO composite Ultra-fine fibers. In all of the spinning conditions investigated, the average diameter of the as-spun PHB/PLLA/PEO fibers was 2.1 μm and increased with increasing the mass ratio of PHB/PLLA. The degree of crystallinity of as-spun PHB/PLLA/PEO fibers increased with increasing PHB content in their blends, and the α-form crystals of PHB and PLLA in as-spun fibers were obtained. When the mass ration of PHB/PLLA in as-spun PHB/PLLA/PEO fibers was 3:1,the structure of as-spun fibers was the skin-core, which PHB formed core of fibers and PLLA form skin of fibers; when the mass ration of PHB/PLLA in as-spun PHB/PLLA/PEO fibers was 1:1, PLLA and PEO were embedded into PHB phase by droplet and febrile morphology to form matrix-fibril structure of as-spun PHB/PLLA/PEO fibers.
Stably Express Spider Flagelliform Silk Protein in Bombyx Mori Cell Line by PiggyBac Transposon-Derived Vector
Authors: Zhang Yuan Song , Zhao Tian Fu , Zhao Ai Chun , Nakagaki Masao
Published: September 2011

Silkworm BmN4 cells were transfected with the helper plasmid and the piggyBac vector( piggyBac-FLAG) in which was inserted with the spider flagelliform silk expression cassette. Via antibiotic selection, most cells showed stable DsRed-expression. Immuno blot analysis showed that flagelliform silk protein of spider was expressed stably in BmN4 cells. Circular dichroism spectra indicated the existence of β-turn structure in recombinant spider flagelliform protein. The present results suggested that transgenic silkworm directly secreting functional spider silk protein in cocoon by using piggyBac system is feasible.
Structure and Thermo-Regulated Performance of Outlast Viscose Fiber
Authors: Zhang Hai Xia , Zhang Xi Chang , Xu Rui Chao
Published: September 2011

To analyze the structure and thermo-regulated performance of Outlast viscose fiber, the fiber structure was observed respectively by FTIR spectra, X-ray diffraction and scanning electron microscope, and the thermo-regulated performance was investigated by differential scanning calorimeter, thermal gravimeter analysis and step cooling test. The results indicate that the structure of Outlast viscose fiber is similar to that of normal viscose fiber. Both the melting peak and crystallization peak of Outlast viscose fiber are double peaks, and the phase change temperature range is applicable and the phase change enthalpy is high. The decomposition temperature of Outlast viscose fiber is about 280-320°C. The cooling velocity of Outlast viscose fiber decreases exponentially with the increase in time, and the thermo-regulated ability of Outlast viscose fiber is better than that of normal viscose fiber.