bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Lightweight Composite Materials in Heavy Roadway
Authors: Zhang Yin Long , Xu Yin Hua , Bian Shi Chuan , Lin Jun Xiang
Published: August 2014

A membrane-beam-elastic element mechanical model of a lightweight composite heavy roadway, which is used on soft slimy ground, is built and its mechanical behaviors under loads are simulated by a large commercial finite element analysis software. The structural style which deformation is minimum under same loads is found, and numerical results are accorded with test ones, can meet the required precision and show reliability of the numerical calculation model. The commercial software can be used to simulate actual static strength situation of the lightweight composite heavy roadway and explore structural style of new roadway. Research shows that lightweight composite heavy roadway which can guarantee heavy vehicles pass in the soft slimy ground conditions make a significant technological breakthrough.
Principal Component Analysis of Structure Model Indexes on Composite Friction Materials
Authors: Du Jian Hua , Xu Shi Meng , Ma Run Bo , Gong Lei
Published: August 2014

For the copper-based composite friction material, the statistical models of the element structure were given in this paper to pick up the main components, that was, through the principal component analysis on basic element model of surface structure, the two kinks of main indicators or indexes are ascertained can be found from the original four indicators. Here, the main components were the area radio and long radius, the others among the four were short radius, inclination. Moreover, the indicator reduction criterion was put forward as a general rule by this paper.
Synthesis of Hollow Ba0.7Sr0.3TiO3 Nanocubes by Using Molten Hydrated Salt as a Solvent
Authors: Zhu Qi An , Bai Gao , Xu Jun Gu , Wang Jian Xia , Cai Jin Hui
Published: August 2014

Perovskite Ba0.7Sr0.3TiO3 nanocubes with a hollow structure were prepared by molten hydrated salt method at 180 °C for 15 h, using Ba (OH)2·8H2O, Sr (OH)2·8H2O and anatase-TiO2 as raw materials without any additive or template. The phase composition, morphology and microstructure of the products were characterized by XRD, SEM, TEM and HRTEM. The XRD result indicates that the products are phase pure cubic Ba0.7Sr0.3TiO3, with the calculated unit cell a=0.3965 nm. The SEM, TEM and HRTEM results show that the products with polycrystalline structure are composed of the hollow nanocubes whose average edge length is about 180 nm, and their morphologies are greatly influenced by reaction temperature and reaction time. In addition, the formation mechanism of the hollow nanocubes also was discussed.
Sound Absorption Property of Hydrogenated Carboxyl Nitrile Rubber/Seven Hole Polyester Fiber Composites
Authors: Hong Jie , Yan Xiong , Jiang Sheng
Published: August 2014

A series of HXNBR/SHPF composites were fabricated and sound absorption property was investigated. The results showed that with increasing of SHPF proportion the sound absorption coefficient was raised. The composite sound absorption coefficient with thickness of 1mm is 0.385, 0.438 and 0.535 at frequency 2500 Hz when the SHPF proportion is 10%, 20%, 30%, respectively. The HXNBR/SHPF composite sound absorption property could also improved by increasing the composite thickness with constant fiber proportion. The composite with thickness of 2mm and SHPF proportion is 10%, 20%, respectively. The sound absorption coefficient increased from 0.385 to 0.427 and 0.438 to 0.475 at frequency 2500Hz, respectively. The mechanical property also improved with increasing of SHPF proportion. So, the HXNBR/SHHPF composite has potential practical application value.
Research on Rheological Behavior of Si3N4-SiC Composites by Gelcasting
Authors: Gong Xiao Ran , Shen Shuang Sheng , Wu Jin
Published: August 2014

Using SiC particles and powder, the modified Si and α-Si3N4 powder as the main raw material, Si3N4-SiC composite materials have been fabricated by gelcasting. The Si3N4-SiC suspension with 75vol% (volume fraction) solid loading exhibits shear thinning rheological behavior under a shear rate from 10 to 160s-1, which meets the requirement of the gelcasting process. The bulk density of the green bodies after solidification is 2.57 g·cm-3 and the flexural strength 16 MPa, the green bodies have a dense and uniform structure. The bulk density and flexural strength of the Si3N4-SiC composites after nitriding are 2.67g·cm-3 and 48 MPa respectively; the strength is higher than that of other industrial products without gelcasting. Well-developed intertwined fibrous Si3N4 crystals grow on the surface of the SiC particles to form a tight microstructure in the Si3N4-SiC composites after firing.
The Wearability of Soybean Protein/Poly (Ethylene Terephthalate) Composite Fabric
Authors: Lu Yong Hua , Gao Su Hua , Zhang Feng Xiu , Zhang Yuan Song , Zhang Gang Xian
Published: August 2014

In this paper,the soybean protein / poly (ethylene terephthalate)PET composite fabric was obtained and its wearability was mainly studied. It is found that the moisture regain, water absorption, air permeability and moisture permeability of soybean protein PET composite fabric were improved greatly. In addition, the whiteness and elastic wrinkle recovery angle kept well, and the stiffness increased incredibly. Therefore, soybean protein being grafted on PET fabric surface not only improved the biocompatibility, but also the wearability.
A New Type of Llightweight Composite Bridge
Authors: Zheng Jin Yang , Chen Yun He
Published: August 2014

Through a comprehensive analysis of a variety of new materials and new research status of the bridge structure，a new kind of lightweight emergency bridge structure is proposed, with CFRP cable-stayed cable, GFRP profiles tower, GFRP profiles girders and panels, assembled and erected section by section from one side to the other side. By optimizing design, the reasonable parameters of the new bridge structure structure was determined. From the perspective of the carrying capacity of the structure , the bridge feasibility is verified.
Synthesis, Characterization and Thermooxidative Properties of Hybrid Block Poly(silane-b-arylacetylene)
Authors: Xu Ying Jie , Qi Hui Min , Zhu Ya Ping , Wang Fan
Published: August 2014

Organic-inorganic hybrid block Poly (silane-b-arylacetylene) (PSbA) have been synthesized through condensation polymerization between chloro-terminated polysilane and diethynylbenzene Grignard reagent, and chloro-terminated polysilane was synthesized through condensation polymerization of dichloromethylvinylsilane in the presence of Mg metal and Lewis acid (ZnCl2, LiCl). The structures of PSbAs were characterized by FTIR, 1H, 13C, 29Si NMR, and GPC. The PSbAs are orange viscous liquid and can be soluble in common organic solvents at room temperature. The thermal cure behavior of PSbAs was determined by DSC, and the thermal and oxidative stability of the cured PSbAs were investigated using TGA. The results showed that the cured PSbAs exhibit high thermal and thermooxidative stability. The degradation temperatures at 5% weight loss for the cured PSbAs are 470-533°C under N2 and 378-456°C under air, and the residue yields at 1000°C are 77.9-82.8% under N2 and 40.4-50.5% under air.
Application Research of High-Strength Needled Filter Bag with Sea-Island Superfine Fiber
Authors: Guo Nang Kuo , Huang Xue , Jing Ling Xiao
Published: August 2014

In order to improve the filtering effect of the bag filter, ultrafine sea-island fiber nonwovens is used to produce ultra-fine structure dust filter material. At the beginning, sea-island superfine fiber needle-punched nonwoven production technology is introduced. And then testament is made to tensile breaking strength, elongation at break, bursting ,air permeability, capture efficiency of dust with different diameters of 0.3μm, 0.5μm, 1μm and 3μm. At last, the performing difference of the sea-island superfine fiber ultrafiltration bag and its counterpart from the market is compared and analyzed. [1,2] The experimental results showed that the average breaking strength of Sea island superfine fiber ultrafiltration enhancement of non-woven fabric in warp direction is 1931N, its average elongation at break 32.7%, its average of Zonal breaking strength 2561N, its average elongation at break 22.6%, its bursting of average strength 1998.07N, its permeability as high as 428.62×103 m3/s, its filtering precision 82.4% under 0.3μm diameter and 100% under 3μm diameter.
The Components and Activities of Flax-Degumming Enzymes Produced by Bacillus licheniformis HDYM-03
Authors: Liu Peng Fei , Zhao Dan , Pan Chao , Du Ren Peng , Ping Wen Xiang , Ge Jing Ping
Published: August 2014

Bacillus licheniformis HDYM-03 was isolated from flax-retting water. In this research, the production of flax-degumming enzymes by this strain was investigated in four medium, whose sole carbon source was beef extract peptone (BP), pectin (PEC), konjac powder (KGM) and carboxymethylcellulose sodium (CMC), respectively. In PEC medium, the production of pectinase (455.06 U/mL) and polygalacturonase (540.32 U/mL) is higher than that in other medium. In KGM medium, the mannanase reach the highest activity 193.33 U/mL. The production of xylanase and cellulase is extremely lower and could be ignored in all of the four medium. The results show that the production of flax-degumming enzymes by this strain could be significantly induced by flax colloid. B.licheniformis HDYM-03 suggest an applicable potential in flax-retting industry.
Study on Fiber Fineness of Comte De Paris Pineapple Leaf
Authors: Du Ji Hua , Zhang Jin , Zhuang Zhi Kai , Li Ming Fu
Published: August 2014

To determine the the fiber fineness in different parts of the old and young leaves. the pineapple leaf fiber of comte de paris was used as raw material, The results showed that, the length of fiber extracted from the old leaves of comte de paris pineapple ranged from 70 cm to 90 cm, and the average fiber fineness of the the tip and root were 14.13 dtex and 18.50 dtex, respectively. While the length of fiber extracted from the young leaves of comte de paris pineapple ranged from 45 cm to 65 cm, and the average fiber fineness of the the tip and root were 13.09 dtex and 15.03 dtex, respectively. Variance analysis reveals that the fiber fineness of root and tip in the old pineapple leaf showed significant difference (P<0.05) in comte de paris pineapple.
Study on the Mechanical Property of CNTs/Silk Fibroin Composite Fiber
Authors: Jiang Yu Chun , Huang Yong Xiang , Zhang Yuan Song
Published: August 2014

Carbon nanotube (CNT) is a new type of nanoscale materials, which has excellent adsorption and mechanical properties. In this paper, carbon nanotubes were added in the regenerated silk fibroin solution to get CNTs/silk fibroin composite fiber, which had more excellent mechanical property than the regenerated fibroin fiber. The results indicate that the optimum preparation conditions are summed up as follows: silk fibroin concentration 35%, spinning temperature 40oC, carbon nanotube mass fraction 1.0% and the longest storage time less than 7 days. The mechanical property of regenerated fibroin fiber which added with carbon nanotubes is obviously improved.
Research on the Controllable Preparation of Silver Nanowires in Conductive Adhesives
Authors: Zhang Zhao , Sheng Da Peng , Wei Zhao Zhen , Li Guo Hui , Li Yong , Niu Jing Tao
Published: August 2014

One dimensional nanomaterials are used as the basic and significant parts to fabricate nanodevices. Silver nanowire is a promising conductive particle, which can be used in conductive adhensives. The research is about the effects of the control agents, reaction temperature, and reaction time on the morphology and size of the product. And figure out an effective way to control the nucleation and the morphology of silver nanowires.
A New Super Absorbent Polymer to Solve Formation Water of Gas Drilling
Authors: Feng Guang Tong , Tan Ye Bang
Published: August 2014

Gas drilling technology have very distinct advantages, it can improve ROP greatly, shorten the drilling cycle, reduce drilling costs, but it's scope of application was greatly limited by the problems of formation water and wellbore stability. This project developed a kind of super-absorbent material which can absorb deionized water 1484 times,absorb 0.9% NaCl aqueous solution 687 times,absorb 50% ethanol 705 times, that can meet the water carrying requirements of gas drilling. it provides a new way of gas drilling to solve the water carry problem.
Effect of Pore Structure of Activated Carbon on its Electrochemical Performance in Non-Aqueous Electrolyte
Authors: He Han Wei , Pan Deng Yu , Zhou Hai Sheng , Wang Xiao
Published: August 2014

The surface area and pore distribution of activated carbons (ACs) were characterized by nitrogen adsorption isotherms at 77 K, and double layer capacitors were assembled to demonstrate the electrochemical performance. With 1 mol·L-1 tetraethylammonium tetrafluoroborate dissolved in acetonitrile (Et4NBF4/AN) as electrolyte, electrochemical methods including cyclic voltammetry (CV) and galvanostatic charge-discharge tests were used to evaluate the capacitors. Results show that the surface area has a limited effect on the specific capacitance of ACs and the increaing of mesoporous content can decrease the capacitance decay rate at large discharge current. When current increases from 0.15A·g-1 to 9.6A·g-1, the minimum specific capacitance decay rate of mesoporous ACs is 10.93%, while that of the microporous ACs is 15.21%;the contributions of mesoporous surface area to the specific capacitance drop from 10.10 to 9.95μF·cm-2, while that of microporous surface area drop from 5.68 to 4.21μF·cm-2.
Removal of Mercury from Simulated Coal Combustion Flue Gas by Iron Sulfide-AC Adsorbent
Authors: Wu Sheng Ji , Yang Wei , Zhou Jie , Xie Zheng Miao
Published: August 2014

Iron sulfide-AC adsorbents were prepared and their mercury removal capabilities were evaluated in the simulated coal combustion flue gases. The FeS2 has much higher mercury removal rate than AC although it has much lower BET surface area than AC. FeS2 also shows higher mercury removal rate than FeS, which is probably due to its higher free sulfur content on the FeS2. The mercury removal capability of AC modified FeS2 decreases with increasing of AC content. Temperature programmed desorption/decomposition process (TPDD) shows FeS and FeS2 have more desorption peak than AC and the main peaks of FeS and FeS2 are at around 240°C. The desorption peaks of AC modified FeS2 are shifted to the higher temperature compared with that of FeS2 and more mercury compositions are desorbed by AC modified FeS2.
Magnetic Field Effects on Synthesis of Porous Silica Gel and the Adsorption Property of Pb2+ Ions
Authors: Xiong Zheng Wei , Lu Sen , Wang Jing Song , Sun Ping
Published: August 2014

Under the effect of an adjustable magnetic field (0-0.6T), porous silica gel was synthesized via sol-gel process by phase separation method to investigate the effect of magnetic field on the formation time of porous silica gel and the influence of porous silica gel synthesized under the induction of magnetic field (m-SiO2) on Pb2+ adsorption property. The findings of this study show that the reaction rate can be increased and the gelation time shortened under the effect of magnetic field. Within the range of intensity of the magnetic field in this study, the 0.25T magnetic field affects the porous silica gel most significantly and can reduce the gelation time from 120min to 90min; the Pb2+ adsorption property of m-SiO2 is better than that of ordinary silica gel (SiO2); under the condition that the solid-to-liquid ratio and the pH value change, the Pb2+ equilibrium adsorption rate and equilibrium absorption capacity of silica gel synthesized with the 0.25T magnetic field, compared with ordinary silica gel (SiO2), can averagely increase by 11.32% and 11.20mg/g, respectively.
Study on Application as Cigarette Paper Dry Strengthening Agent of CPAM Emulsion
Authors: Ju Wen , Zhang Jiang Qiang , Li Yue , Liu Xiang Wei
Published: August 2014

Homemade water in water cationic polyacrylamide (CPAM) emulsion was applied in cigarette paper pulp as dry strengthening agent with other strengthening agent. Good collaborative effect was achieved when CPAM was used in bleached wheat straw pulp with strengthening agent E and with cationic additives L as paper pulp strengthening agent. It was also showed that distinct strengthening effect was obtained when CPAM emulsion was applied in mixture of bleached needle kraft pulp (NBKP) and wheat straw pulp, breaking length and tearing index of cigarette handsheet made of mix pulp was respectively increased by 22.2% and17.0% when the dosage of CPAM was 0.8% of dry fiber. Through analysis of cigarette handsheet section scanning electron microscopy (SEM) photos, strengthening mechanism of CPAM emulsion to cigarette paper pulp was preliminary studied.
Synthesis and Characterization of Substituted-Ammonium Humic Acid Fluid Loss Additive for Oil-Based Drilling Fluids
Authors: Ma Cha , Li Long , Wang Gang , Yuan Xu Bo
Published: August 2014

Using widely distributed and cheap lignite as starting material, humic acid was modified by octadecylamine, and a new kind of humic acid acetamide was prepared. The optimal reaction conditions of the humic acid acetamide polymer were obtained through laboratory tests as follow: the ratio of of humic acid and octadecylamine was 1:1.5, the reaction temperature was 150 °C, and the reaction time was 16~18 h. The new product was characterized by IR, and the results showed that this substituted-ammonium humic acid was successfully prepared by reacting parts of carboxyl group of humic acid with octadecylamine. HTHP filtration experiments demonstrated that the substituted-ammonium humic acid had good fluid loss properties. As a result, this substituted-ammonium humic acid polymer is an excellent fluid loss additive, and it could meet the requirement of drilling operation under extreme condition.
The Synthesis of Laminin with Transition Metal Y-Type Zeolite Catalyst in Methanol-Water Solvent
Authors: Li Qun , Ni Cai , Wang Yue , Li Xiao Wen , Zhang Chao , Zhao Yu Jie , Lv Xiao Hao
Published: August 2014

Methanol-water as solvent, transition metal Y-type zeolite as catalyst, L-lysine was synthesized laminin. Explores the methylation process factors, and the structure of the compound by IR, NMR and elemental analysis were characterized.
Preparation of Size Controllable BaTiO3 Nanoparticles in Microemulsion at Low Temperature
Authors: Deng Zhao , Dai Ying , Xiao Hua , Zhou Meng Jun
Published: August 2014

Size controllable Barium titanate nanoparticles were synthesized in microemulsion consisting of water, OP-10, hexanol and cyclohexane under atmospheric pressure and low temperature, with Ba (OH)2·8H2O and tetrabutyl titanate used as starting reactants. Products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX). The results show that 65°C is the proper temperature for the synthesis. The particle size can be controlled by varying the reactants’ concentration, ω value (molar ratios of water to surfactant) and aging time.
Thermal Explosion Experiment of Energetic Materials
Authors: Chen Chen , Lu Gui E , Jiang Jin Yong , Jia Hao Nan , Li Yang , Zhang Peng
Published: August 2014

For the thermal safety evaluation of energetic materials, the experimental devices, test method, conditions of determination, numerical calculation and simulation are listed in this paper on thermal explosion experiment both at home and abroad. By listing typical examples and comparing the existing researches, current study and developing trend of thermal explosion experiment are summarized and prospected.
A New Method for Measuring Acid Effective Consumption Time in Acid Fracturing
Authors: Mou Jian Ye , Zheng Ke Xiang , Chen Hua Jian , Zhang Han
Published: August 2014

In acid fracturing, the fast acid-rock reaction limits live acid penetration distance. Many kinds of acids were developed to reduce the acid-rock reaction rate. Acid effective consumption time in the fracure is a key factor for accurate prediction of live acid penetraiton distance in acid fracturing designs. In this paper, we developed a new method for measuring acid effective consumption time in the fracture and did experimental result matching to obtain effective acid diffusion coefficient with a acid flow-reaction model. Firstly, we designed a apparatus and corresponding experimental procedure. Then used the new method to measure the effective consumption time for gel acid and crosslinked acid. The new method uses reservoir core samples and is convenient to heat all the fluid as well as pipe lines to the reservoir tempeature, which reflects in-situ conditions more reliably. In the experiment, the rock mass loss with time was measured, based on which the acid consumption time is predicted. Under the experiment conditoins, the gel acid has a effecive consumption time about 17-minute, and the crosslinked acid has about 22-minutes at 130°. Finally, a model of acid flow-reaction in a fracture was used to match experimental results to obtained the acid diffution coeffecient. The results from this study help improve accuracy in acid fracturing designs.
Design and Trial-Production for Hydrogen Production System Based on Efficient Hydrogen-Generating Agent
Authors: Zhou You Jie , Xiong Chun Hua , Zheng Fa , Wang Gang , Wang Feng
Published: August 2014

The technical solutions integrating the purification systems of normal pressure reaction tank, filtration, refrigeration and water removal, is proposed to trial-produce efficient hydrogen-generating model according to the mechanical structure design of integration and modularization, using efficient chemical hydrogen-generating agent. The practical test shows that the purification purity of hydrogen is up to 99.99%, average rate is over 15slpm, and the system pressure is less than 1.0MPa so that no leakage happens. The system meets the design requirements and indicators and it guarantee the safety usage of hydrogen, which can be used for supplying hydrogen and warming outdoor for its easy operation and convenience.
Preparation of ZnO Powder from Clinker Digestion Solution of Zinc Oxide Ore
Authors: Shao Hong Mei , Shen Xiao Yi , Wang Zhi Meng , Zhai Yu Chun
Published: August 2014

The ZnO powder was successfully obtained by calcining the basic zinc carbonate, which was synthesized from clinker digestion solution of zinc oxide ore using analytical Na2CO3. The factors of mol ratio of Na2CO3 to ZnSO4 and reaction temperature were discussed at stirring intensity 400 rpm. Both the obtained basic zinc carbonate and ZnO powders were characterized using XRD, EDS and SEM. The thermal decomposition of basic zinc carbonate was also investigated below 600°C. The results show that the ZnO powder was wurzite hexagonal structure and the well-crystallized ZnO powder was uniformly spherical particles and distributed in a narrow range.
Preparation and Properties of Fe-Mn Efficient Self Heating Material
Authors: Li Xiang Li , Li Zi Chao , Li Xiao Wen , Dou Yan Han , Huan Li Gang , Gao Sheng Hua , Li Qun
Published: August 2014

In this paper, the exothermal efficiency and exothermal rate were employed to evaluate and optimize the composition of the self-heating material, and the effects of each component were discussed. The final optimized composition as below: reduced iron powder (20%), potassium permanganate (60%), sodium chloride (10%), activated carbon (10%). Under the optimized conditions, the temperature of this self-heating material could up to 100 °C within 2 min and maintain for 20 min, which should be suitable for flameless fast food self-heating or providing heat source for physiotherapy equipment in the medical field.
Determination Methods for Storage Stability of Combustible Cartridge Case
Authors: Jiang Jin Yong , Lu Gui E , Jia Hao Nan , An Zhen Tao , Ge Qiang , Wang Shao Guang , Chen Chen
Published: August 2014

The stabilizer content of aging combustible cartridge case (CCC) was measured by gas chromatography and chemical method. And the test results under different experimental conditions were analyzed. The results showed that the stabilizer content of the CCC decreased gradually with the aging time increased, which is in line with changes of stability of CCC. It is feasible to determine CCC stability by using gas chromatography.
Study on the Complexation of 5,11,17,23,29,35- Hexacarboxy-37,38,39,40,41,42-Hexa-Methoxy-Hydroxamic Calix[6]arene Extraction of Metal Ions
Authors: Zhou Jie , Wang Jing Song , Li Xia , Fang Feng Rong
Published: August 2014

The complexation abilities of 5,11,17,23,29,35-hexacarboxy-37,38,39,40,41,42- hexa-methoxy-hydroxamic calix[6]arene extraction of metal ions (Cu2+, Ni2+, Na+, Fe3+, Cd3+, Mn2+, Pb2+) were studied. And the complexation ration of Cu2+ and Pb2+ were obtained by Job's method. The selective removal of Cu2+ (Pb2+) coexisting with alkali metals ions (Na+, K+) and alkaline earth metal ions (Ca2+, Mg2+), heavy metal ions (Zn2+, Mn2+, Pb2+(Cu2+), Ni2+) and anions (CO32-, C2O42-, SO42-, NO3-) were studied separately . The results revealed that the percent of Cu2+(Pb2+) removal in the presence of alkali metals ions and alkaline earth metal ions was over 83.8% (90%) and in the presence of anions was over 90.1% (81.3%) while the percent of Cu2+(Pb2+) removal in the presence of heavy metal ions was lower than 70.6% (70.0%), and the minimum percent of Cu2+(Pb2+) removal in the presence of heavy metal ions was 32.7% (61.2%).
Mixture of Different Surfactants Enhanced Chemical Flooding for Suijing Oil Recovery
Authors: Jiang Lu Ming , Jiang Qing Zhe , Song Zhao Zheng , Xiao Xiao
Published: August 2014

We investigate six different surfactants in interfacial tension (IFT) between the surfactant solution and the crude oil from Suijng oilfield. Based on the measurement of interfacial tension, the anion surfactant Heavy alkylbenzene sulfonate (HABS) and non-ionic surfactant alkyl glycoside (APG) are selected for the formulation of mixed surfactant. The IFT between the mixed surfactant solution comprising the HABS and APG and crude oil from Suijing can be reduced to ultralow.The experimental results indicate that the selected mixed surfactant formulation (0.20%HABS+0.10%APG) has a good performance on the tolerance of temperature and salinity and the coreflood test result indicate that the effective of the formulation was high which led to significant oil recovery (56.48%TOR).
Synthesis of Titanium Carbonitride Powders by Reactive Ball Milling of Titanium, Graphite and Urea
Authors: Sun Jin Feng , Quan Kun , Sun Ji Sheng , Meng Yong Qiang
Published: August 2014

Titanium carbonitride (TiCN) nanocrystaline powders were syntheiszed by reactive ball milling of titanium, graphite and urea. GN-2 ball milling was used and the rotation speed was 600rpm. The ratio of ball to material was 30:1, the milling time was from 10 hours to 50 hours. The powders milled for different time were analyzed by X-ray diffraction. The results show that TiCN powders can be synthesized by milling 10 hours, although some raw materials remained. After milled for 50 hours, the raw materials can reactive completely to form TiCN and the grain size of the TiCN powder was about 7 nm.
Application of Diester Gemini Quaternary Ammonium Salt as Paper Softening Agent
Authors: Huo Xiao Ping , Ren Jian Wei , Miao Zong Cheng
Published: August 2014

Quaternary ammonium cationic surfactants have very important application in the papermaking industry, which is a series of important paper softening agents. In order to obtain an environment-friendly paper softening agent, a novel diester gemini quaternary ammonium salt cationic surfactant has been prepared. Dodecyldimethyl amine, epichlorohydrin and adipic acid were used as raw materials to synthesize the surfactant, and Fourier transform infrared spectroscopy was used to characterize the groups in reaction product. Moreover, the softening effect of the diester gemini quaternary ammonium salt cationic surfactant was studied in detail.
Preparation of Na2S from Na2SO4 Using CO
Authors: Shen Xiao Yi , Shao Hong Mei , Wang Zhi Meng , Zhai Yu Chun
Published: August 2014

Na2SO4 solution that was obtained from ZnSO4 solution after Zn2+ precipitation using Na2CO3 was used as raw material. The Na2SO4·7H2O crystallization was obtained through cooling the Na2SO4 solution, and then the solution was cycled. The Na2SO4·7H2O was dried and then put into a porcelain boat located in a roaster. When the reaction between Na2SO4 and CO ended, the Na2S was obtained. The influences of reaction temperature, reaction time and material thickness on the conversion rate were discussed. The appropriate reaction conditions were reaction temperature 675°C, reaction time 120min and material thickness less than 4cm.
Comparative Analysis of Performance for SCR De-NOx Catalysts in Power Plant
Authors: Diao Chun Yan , He Hua Zhong
Published: August 2014

In recent years air pollution especially fog haze occurred in area of Beijing, Tianjin and Hebei, the emissions of flue gas in power plant further contribute to pollution. Through integrated analysis of different performance indicators for SCR De-NOx catalysts in power plant and contrast analysis of various performance for main existing commercial catalyst, countermeasures and proposals were further made to improve catalyst performance and market adaptation. Thereby the effect of flue gas in power plant on atmospheric pollution and the occurring frequency of fog and haze can be controlled or reduced.
Synthesis of Diphenyl Carbonate by Oxidative Carbonylation over Pd(II)-N/P Complexes Catalysts
Authors: Li Jing , Zhang Pei , Wu Jia Xiong , Yuan Hua
Published: August 2014

Tow palladium complexes, [1,1′-Bis(diphenylphosphino)ferrocene] dichloropalladium, [1,3-ditbutylimidazolium] dichloropalladium were synthesized and characterized by IR, 1H-NMR and Elemental Analysis. The catalytic activity of different complexes was investigated by the oxidation of phenol to diphenyl carbonate. [1,3-ditbutylimidazolium] dichloropalladium showed better reactivity. The TON value was up to 73.2 diphenyl carbonate mol/Pd mol under a total pressure of 5 MPa (Pco:Po2=93:7) at 100°C for 3 h.
Performance Study of 5-Aminotetrazole Nitrate Gas Generant
Authors: Xu Tai Wen , Du Zhi Ming , Wang Meng Meng
Published: August 2014

As a new azide-free gas generating pyrotechnic composition, the performance of four kinds of 5-aminotetrazole nitrate (5-ATN) gas generating compositions were investigated by hygroscopicity, compatibility, impact sensitivity, heat of combustion and burning temperature measurement. The advantages of the gas generant using KNO3 as an oxidizing agent include small hygroscopicity, better compatibility, lower impact sensitivity and proper burning temperature. The degree of water sorption in the mixed system with Sr (NO3)2 was much higher than that with KNO3. The participation of CuO can reduce the hygroscopicity of the system with Sr (NO3)2. As the oxidizing agent and catalyst, CuO can also decrease the impact sensitivity, heat of combustion and burning temperature of both systems. 5-ATN gas generant provides fair compatibility using 5-ATN as separate system.
Synthesis and Characterization of Eu3+-Doped Transparent Glass-Ceramics Containing Nanocrystalline AlNbO4
Authors: Song Qiong , Su Chun Hui , Zhang Hong Bo , Shao Jing , Zou Xiang Yu , Wei Qin Lei , Zhu Xiao Wei , Deng Shuang , Jiang Li Mei
Published: August 2014

The transparent glass-ceramics containing nanocrystalline AlNbO4 phase in the 25Al2O3-27Nb2O5-40SiO2-7Na2O-2Eu2O3(wt%) glass were prepared by the melt-quench technique followed by a two-stage controlled heat treatment. Crystalline phase were indentified using X-ray diffraction (XRD) which AlNbO4 phase was found. Scanning electron microscopy (SEM) was used to image the crystalline phase morphologies. The luminescence spectra of Eu3+-doped glass and glass-ceramics were recorded at 393 nm exciation wavelength and the luminescence intensity is found to be increase with heat-treatment time due to increase in crystallinity. The high intensity ratio of 5D0-7F2 to 5D0-7F1 indicates that the Eu3+-doped nanocrystalline AlNbO4 glass-ceramics are promising candidate materials as red-light source.
Control Schemes of the Coating Procession for the Camouflage Stone Chip Coated Steel Roof Tiles
Authors: Liu Chao Ying , Cheng Hong Ying , Chen Yong Jian
Published: August 2014

The equipment for two-color camouflage mode stone chip coated roof tiles is designed as an improvement on the equipment of single-color coated steel roof tiles, which uses two different colors (color 1 and color 2) contained in a certain funnel to replace the original single color funnel. The feedings of the stone chips Qsc1 and Qsc2 are separately controlled by the motor Mr1 and Mr2 but are interconnected. When the feeding amount of stone chip color 1, Qsc1, is designed to change in sinusoidal, the feeding amount of stone chip color 2, Qsc2, is controlled by Qsc1, but the total amount Qsc1+Qsc2 is kept be a constant at any time. In this way, a colorful coating with a uniform thickness can be obtained. The amplitude and frequency of the parameter in the sine wave represent the contrast and the hue of the camouflage coated steel roof tiles.
Effect of Temperature on Plasma Nitriding of AISI410 Martensitic Stainless Steel
Authors: Ye Wei , Tong Xing Sheng
Published: August 2014

In this study, the AISI410 martensitic stainless steel was treated by plasma nitriding. Three different temperature were employed (420°C ， 460°C， 500°C) for 6h. The microstructure, hardness and corrosion properties of the nitrided samples were characterised by a variety of analytical techniques. The result shows that the hardness of the nitrided samples is four times the size of the untreated samples and the thickness of the compound layer will decline when the nitriding temperature increases. In the electrochemical corrosion tests, the samples nitrided at 420°C and 460°C showed lower current density and corrosion rate than the original sample because of the formation of nitrided compound layer on the martensitic stainless steel. In particular, the corrosion properties of nitriding samples(420°C) are five times larger than original samples. But it reducesnitriding at high temperature(500°C) because of the precipitation of chromium.
Effects of WC12Co Content on Wear Behavior of NiCoCrAlY Coating by Cold Gas Dynamic Spraying
Authors: Feng Sheng Qiang , Wang Cun Long , Ma Bing , Cui Lang
Published: August 2014

The NiCoCrAlY+WC12Co coating with high density was prepared on the surface of the magnesium alloy by cold spraying. Effects of the WC12Co content on the wear behavior of coating were studied. The results showed that, under the dry friction condition, the weightlessness of wear of the coating with 20%WC12Co was smallest. The weightlessness of wear of the coating with 10%WC12Co was worse than that with 20%WC12Co. However, the weightlessness of wear of the coating without any WC12Co was worst among the three coatings. After the frictional experiment for 20 minutes, the weightlessness of wear of coating without any WC12Co was 10mg. Compared with that of coatings with 10%WC12Co and 20%WC12Co, the weightlessness of wear was lower than 35% and 54%, respectively. Obviously, the coating with 20%WC12Co had the capacity of the weightlessness of wear resistance. Consequently, the more the coating with WC12Co was, the higher the capacity of the weightlessness of wear resistance was.
A New Chromate-Free Insulating Coating on Silicon Steel
Authors: Wang Shuang Hong , Long Yong Feng , Zhao Shi Lu , An Cheng Qiang , Ding Ke
Published: August 2014

The water-based paint had been examined to prepare a new chromate-free insulating coating on silicon steels. The structure of the insulating coating was characterized by scanning electron microscopy, energy dispersive spectroscopy and infrared spectroscopy. Adhesion, high temperature annealing, and surface insulating resistance were measured. Corrosion resistance was investigated by neutral salt spray test and electrochemical test. Results exhibited that the insulating coating had excellent comprehensive performance. The adhesive level was 5B degree; the high temperature annealing test showed no coating degradation after heat treatment of 2 h at 450 °C in air or at 750 °C in nitrogen; the salt spray test showed the corrosion area was less than 2 % after the 12 h salt spray; when the coating thickness was 1.0-1.2 μm, the surface insulating resistance value was 380-420 Ω/mm2.
Corrosion Resistance of the Nanometer Organic Coating in Grotto Environment
Authors: Lou Miao , Lu Yu Feng , Zhou Meng , Lu Fei , Huang Yin Jun , Hu Xin Dong
Published: August 2014

Accelerate the corrosion of the nanometer organic coating by design salt spray test. Research the corrosion resistance of the nanometer organic coating in grotto environment by EIS. The results show that prolong time of the salt spray test, the coating surface become to coarseness, the colour occur slight change, but no blistering and flake away. The Rc and Rt descend, every ten days the corrosion rate of coating augment decuple, at forty days is 3.14μm/a and the steel is not corrosion. The nanometer organic coating behave good protection ability and corrosion resistance in the grotto environment.
Facile Synthesis of Cu2SnSe3 Thin Film via Sol-Gel Process
Authors: Liu Ji Wan , Chen Gui Lin , Liu Wei Feng , Jiang Guo Shun , Zhu Chang Fei
Published: August 2014

A low-cost non-vacuum process for fabrication of Cu2SnSe3 film by sol-gel method and knife-coating process is described. First, a certain amount of Copper (I) chloride and tin (IV) tetrachloride was dissolve into the mixture of water and alcohol and then some Polyvinyl Pyrrolidone (PVP) was added to the solution to obtain based colloidal solution. Next, precursor thin layer was deposited by knife-blading technique on soda-lime glass (SLG). Finally, precursor layer was annealed at selenium flow atmosphere carried by Ar gas at 550oC. Through X-ray diffraction (XRD) and Raman spectra, it is found that pure Cu2SnSe3 film was prepared successfully. Scanning electron microscopy (SEM) and UV–vis–NIR absorbance spectroscopy were used to characterize its morphology and optical bandgap.
Preparation of AlN Thin Film Deposited on SiO2 for Improving Temperature Frequency Coefficient of FBAR Used in CSACs
Authors: Zhang Zhong Shan , Tang Liang , Ji Lei
Published: August 2014

AlN films were deposited by RF magnetron sputtering on the SiO2 films with different thickness. Preferred orientation, grain size, surface roughness and grain growth of the AlN films were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM) and field-emission scanning electron microscopy (FESEM). It's found that when the thickness of SiO2 films are 100 nm and 200 nm, the AlN films have characteristics of good C-axis preferred orientation, good surface roughness and vertical grain growth, which are suitable for application in thin film bulk acoustic wave resonators (FBARs). When the thickness of SiO2 film is 300 nm, although the AlN film has characteristics of good C-axis preferred orientation and surface roughness, the grain growth is tilted, which is not suitable for application in the FBARs.
The Study on Color Quality Attributes of IMR with PET on White Ink by UV Inkjet
Authors: Chen Chang Lang , Chang Yu Tung , Taso Sheng Hao , Hsu Weichieh
Published: August 2014

The In-Mold Roller is a revolutionary printing process by which objects are 3D decorated. Products decorated by In-Mold Roller are waterproof and protected from fading. What’s more, these kinds of decorations strongly increase the beauty, desirability and value of the objects. The In-Mold Roller is now using either of gravure printing and screen printing to print PET film. However, there are some problems with these two techniques. This research is to investigate potential usages of combining In-Mold Roller with digital UV inkjet printing in 3D decoration, e.g. in personalized printing services. Study results found that when the coverage and the resolution of inkjet printing become higher, the SIDs will become higher as well. When transferred to ABS, SIDs in each combination will increase. Each combination of inkjet conditions, with the isolation of white ink, color differences are less variant. TVIs of white ink decrease 30% to 40% halftone and display in “M” type. In print contrast, C and K colors of each combination are better than M and Y colors. After transferred into print contrast, each combination of PC will be higher about 2 to5. When transferred to ABS, color variances of each combination are not huge, and color differences are about 3to5.
Study on Several Problems of Circular-Arc Waves Screen Plate’s Design
Authors: Wu Wei Cheng , Wang Chen Sheng , Su Fang
Published: August 2014

Abrasion of screen bar is reduced, after the screen underflow’s decreasing, which service life is significantly prolong according to the paper. So small diameter screen bar can be used, and the open area will be increased through optimization design. The relationship between the theoretical value and practical value of open area is discussed in this paper. Circular section of screen bar is beneficial to streamline channel’s formation, reducing and avoiding basically refuse jam or blocked screen accident. Straight line structure of grate be helpful for material diversion.
Study on the Modification of Concentrated Emulsion of Organosilicon for Propagating Ethanol Permselective Pervaporation Film
Authors: Zhao Su Fen , Zhang Li Qong , Liu Xiao Yan , Tu Zhi Gang , Zhang Chen
Published: August 2014

Vinyl-cyclosilane and styrene were introduced to harden the polysiloxane via radical crosslinking ensuring the independency of the particles and the generation of the micro-channels. After the emulsion had been prepared, when the shape of emulsion particles became stable, the room temperature vulcanization crosslinker was added to form the separation membrane.
Effect of High Temperature and Humidity in Storage on Component of Soy Protein Isolate
Authors: Sun Bing Yu , Shi Yan Guo , Liu Lin Lin
Published: August 2014

The SPI was applied in food industry widely, but its functionalities may change during storage. The effect of store temperature, time, RH and package material on emulsibility and the component of SPI were studied, when SPI was packaged in 100% N2 and Al, 80%N2:20%CO2 and Al, 60%N2:40% CO2 and Al, vacuum and Al, white paper/plastic/HDPE, and PE and then stored for 5 months in the conditions of RH 80% and 30°C. It was shown that the 7S/11S of SPI only packaged in PE decreased significantly(p<0.05), while the subunit of SPI would lost in different levels and obviously in PE. It was observed by SDS-PAGE that the subunit of SPI disaggregated and molecules aggregated. Focusing on the sulfydryl group and disulfide bond, it was found that the content of sulfydryl decreased while disulfide bond increased.
Preparation of Cool Wool Natural Energy Storage Material
Authors: Zhang Hai Yan , Hu Xue Min
Published: August 2014

Preparing of cool wool natural energy storage materials from wool fiber is a feasible and effective method. The structure characteristics of wool and the reason that wool has cool properties were introduced. The preparation principle, preparation methods and properties of cool wool fiber was studied. The preparation methods of cool wool mainly include scale stripping and surface coating. Scale stripping mainly consists of Chlorination, oxidation, biological enzyme treatment and plasma treatment. Surface coating mainly consists of resin finishing and ceramic finishing. Slenderizing and adding energy storage materials are also the effective methods. Wool as a new concept of natural energy storage material is recognized by people.
Influence of Dihydromyricetin on Lowering Blood Glucose Concentration and Reducing Early Kidney Damage in Imparied Glucose Tolerance Rats
Authors: Zhou Yong Qiang , Mao Tao Yan
Published: August 2014

Diabetic nephropathy (DN) is a common complication of diabetes and it is related to irreversible kidney damages and chronic renal failure. Impaired glucose tolerance (IGT) is an early stage in the development of diabetes and DN. Early detection of IGT and treatment of its associated early kidney damage can effectively prevent the development of DN. In this paper, the influence of dihydromyricetin (DHM) on lowering blood glucose concentration and reducing early kidney damage in IGT rats was studied. Animal model of IGT rats was built by two week intragastric injection of D-galactose and treated with eight weeks of intragastric injection of DHM at two dose levels. The concentrations of fasting blood glucose (FBG), two-hour postprandial blood glucose (2hBG), insulin levels, contents of microalbuminuia (mAlb) and blood urea nitrogen (BUN), and activities of lactate dehydrogenase (LDH) in kidney were analysed and compared with those in control groups. Experimental results indicated that DHM treatment can significantly lower the levels of two-hour postprandial blood glucose and insulin, decrease the content of mAlb and the activities of LDH in kidney, but does not influence the level of BUN. The study suggested that DHM can effectively improve the states of IGT rats and provide a protective effect against early kidney damage.
Modification of Zein and its Antioxidant Property In Vitro
Authors: He Yu Tang , Yin Tian Gang , Xie Yu Mei , Xu Yong Xia , Liu He , Ma Tao
Published: August 2014

Modified zein could improve functional properties of zein broadening its application. The L9(34) orthogonal experimental design was applied to optimize modification technology of zein. The results showed that the optimum parameters of zein modification were using gallic acid as modifier, ethanol 80% and modification time 2.0h. Under these conditions, the fracture elongation of modified zein was reached to 79.5%. The results showed obvious effects. The antioxidant activities of zein were determined by •OH and DPPH radicals scavenging assays. When modified zein concentration was 2.0 g/mL the scavenging capacity of DPPH and •OH reached to 34.7% and 45.2%. The antioxidant activity of zein was less than vitamin C. This study has important practical significance for deep processing of zein resources.
Current Research and Perspectives of Lipid Extraction from Wet Microalgae
Authors: Xu Xin Miao , Fan Zhi Xiang , Shen Ying
Published: August 2014

Lipid extraction process claimed about 10-20% of the total cost of microalgal fuels. Cell disruption (bead beater, a high-pressure homogenizer, ultrasoniaction, etc) followed with solvent extraction (hexane, chloroform and methyl, etc) are commonly used in lab-scale experiments. However, it is time consuming and costly to apply these methods in large-scale production. Recently, some innovative methods, such as microwave-assisted process and enzyme treatment are also found effective in lipid extraction from wet microalgae biomass. This article reviewed the current techniques commonly used in lipid extraction from wet microalgae.
Progress on Utilization of Water Hyacinth
Authors: Zhao Yun , Zhang Guang Wei , Shen Ying
Published: August 2014

Water hyacinth is an invasive weed because of its high reproductive capacity, adaptability, nutritional requirements and resistance to adverse environments. It is impossible to eradicate and difficult to control. Since water hyacinth is mainly composed of lignin, cellulose, hemicellulose and water (around 90%).This paper introduced the current researches and perspectives of the utilization of water hyacinth.