Search results

This paper adopts polydimethylsiloxane (PDMS) as raw materials, oligomeric methyl triethoxysilane as crosslinking agent, replace the traditional crosslinking agent-ethyl orthosilicate, produced dense pervaporation membrane and study the effect of treatment of wastewater containing phenol. 1 Instruments and Drugs 1.1 Instruments 90-3 Thermostatic bidirectional magnetic stirrer, ZK-82B Vacuum drying oven, AW120 electronic balance (SHIMADZU), TV-1810 UV visible spectrophotometer, LHS-150SC constant temperature and humidity box, Fourier transform infrared-Raman spectroscopy, JY-82 contact angle measurement instrument, Pervaporation device, substrate, homemade scraper. 1.2 Drugs Poly dimethyl siloxane (PDMS), methyl triethoxysilane (Sinopharm chemical reagent company), dibutyltin dilaurate, toluene, phenol. 2 Experiment 2.1 Preparation of pervaporation membrane The PDMS prepolymer, toluene as solvent, methyl triethoxy silane cross-linking agent, dibutyltin dilaurate as catalyst according
Wastewater containing phenol with different concentrations prepared from phenol and distilled water, liquid material is heater by the heater through the feed pump, enters the membrane chamber, the downstream component is collected by a liquid nitrogen cold trap to condensation, residual liquid cyclic back to the liquid tank, pumping vacuum control the pressure of the downstream, the effective area of the membrane is 1.6×10-2 m2. 2.2 FT-IR Characterization Fig.1 The FR-IR spectrum of PDMS membrane The Infrared Spectroscopy (IR) of the PDMS pervaporation membranes is shown in Fig.1.
The experiment investigates the effects of solution in different proportions of the crosslinking agent in certain conditions on the membrane separation performance. 2.4 Effect of operating conditions on the treatment effect In addition to the membrane material and crosslinking agent, the separation effect is also related to operating conditions, such as: the feed temperature, concentration and velocity, separation pressure, parameter optimization of membrane can be confirm by the further study of the effects of operating conditions on the membrane performances. 3 Results and Discussion The water contact angle of PDMS pervaporation membrane is 98.2°, the contact angle of phenol is 34.6°, contact angle of phenol is obviously smaller than the contact angle of water infiltration, Prove that the membrane has a strong hydrophobicity, high selective for phenol.
When the temperature of the feed was 60°C, the flow rate was 0.6L/min, the downstream side pressure was 6KPa, with the increase of the concentration of phenol in raw material, the permeation flux and separation factor increased.
Journal of Environmental Sciences, 2003, 15 (6): 821-826.

AMBAR Yarmo 2 1 Department of Electric, Electronic & System Eng, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, MALAYSIA 2 School of Chemical Science and Food Technology, Universiti Kebangsaan Malaysia,43600 UKM Bangi, MALAYSIA a huda@vlsi.eng.ukm.my Keywords: Nanoporous TiO2, Electrode, Dye sensitized solar cell, Efficiency Abstract.
The main component of a DSSC is a semiconducting material with a wide band gap.
Titanium dioxide (TiO2) is one of the materials that had been widely used [3].
Materials and Method This TiO2 paste was prepared by mixing the 0.8g of TiO2 nanopowder and 0.5 M TiCl4 water solution.
[6] Dongshe Zhang, Hengyao Hu, Laifeng Li, and Donglu Shi, Low-Temperature Preparation of Amorphous-Shell/Nanocrystalline-Core Nanostructured TiO2 Electrodes for Flexible DyeSensitized Solar Cells, Journal of Nanomaterials, Volume 2008, Article ID 271631, 4 pages

Table.1 shows the material parameters of it.
The material parameters of mechanical seal ring Sealing Parts Material Type Young’s Modulus (Mpa) Poisson’s Ratio Static Ring Graphite 1.96×104 0.280 Dynamic Ring Silicon Carbide 4.50×105 0.218 Rotating Seat Steel 2.05×105 0.300 The isolation analysis is a more intuitive modeling method for structural static analysis of sealing rings, so the static and dynamic ring were separated and analyzed by the isolation analysis method.
This is due to material of dynamic ring and contact face area.
This is due to the material of dynamic ring and contact face area.
Acknowledgements This paper is supported by the University Scientific Research Projects Fund of Xinjiang Autonomous Region（XJEDU2010I15），the Opening Fund of the National Key Lab for Modern Manufacture of Xi’an Jiao Tong Unversity (201011)，the national natural science fund project(50805125).

Experimental Investigation on Reduction Kinetics of Stainless Steel-making slag in Iron bath Smelting Reduction ZHANG Bo1, NIU Shuai1, CHEN Wenbin1, LI Wencai1, CHEN Fatao1, LI Tao1, LIANG lisheng2, HONG Xin1a 1Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai China 2Baosteel co., Ltd, Shanghai China aRoom 417 Building Rixin Shanghai University NO.149 Yanchang Road Shanghai China, E-mail: xhong@mail.shu.edu.cn Key Words: stainless steel-making slag, smelting reduction, reduction rate, iron bath Abstract: Reduction kinetics of stainless steel slag in iron bath smelting reduction was studied at the temperature of 1500℃ ~ 1650℃.
Fig.1 Experimental apparatus Stainless steel-making slag generated from electric arc furnace was used as experimental material.
Tab.1 Composition analysis of stainless steel-making slag material Cr% Fe% Al% Ca% Si% Mg% content 3.58 3.52 3.77 54.67 18.60 11.90 As shown in fig.2, the main elements in the slag were Ca, Si and Mg.
Acknowledgements The authors acknowledge the financial support of the National Natural Science Foundation of China (Grant No. 50634040) and Chinese National Key Technology R&D Program (Grant No. 2006BAE03A12). 6.
Journal of Chongqing Institute of Technology[J].

But the related mechanical properties are often combined to a brittle behavior, limiting the possible applications of the material.
Fig. 1: Hardness evolution with time of Fe-Si-Ti alloy by Henon et al. [3] Since, the optimization of mechanical properties is essential for materials in transportation applications and regarding the encouraging results obtained in literature (fig. 1), mechanical tests were performed on Fe-Si-Ti. fig. 2 shows the evolution of the Vickers hardness for samples annealed at 3 different precipitation temperatures: 450°C, 500°C and 550°C.
Guiu, in Low temperature deformation mechanisms in an Fe-Si-Ti alloy, Journal of Materials Science Vol.10, pgs. 1161-1168 (1975) [3] J-P.

Analyse of Flexible Assembly Cell via Software Witness MATÚŠOVÁ Miriam1,a, HRUŠKOVÁ Erika1,b and VELÍŠEK Karol1,c 1Institute of Manufacturing Systems and Applied Mechanics, Faculty of Material Science and Technology, Rázusova 2, 917 24 Trnava, Slovakia amiriam.matusova@stuba.sk, berika.hruskova@stuba.sk, ckarol.velisek@stuba.sk Keywords: simulation, software, relations, flexible assembly cell Abstract.
Random arrangement is suitable for the workplaces where it is not possible to determine the plant situated material flow, the continuity of operations, or organizational and management relations.
It is used in single and small batch production, where the diversity of produced parts impossible to unite the direction of material flows.
Material flow of the product has the same direction.
Javorová, Planning and design production system organizational structures and procedures, Journal of Engineering,8(3), 2010, p.331-335

Material on the copper or aluminum foil is heated by the wind which is blown onto the upper and lower surfaces of the copper or aluminum foil.
Acknowledgements The work is supported by the science and technology supporting scheme of Jiangsu province (BE2011176).
Advanced Materials Industry, Peking, 2008, 4: p.3
Advanced Materials Industry, Peking, 2006,9: p.65
[9] Q.Y.Wang, C.A.Ye: Journal of Agricultural Mechanization Research Vol. 5(2002):p.80

The mechanical properties of the soil and the other materials were described in Table 1.
The authors made some simplification in this finite element model: (1) Soil layers were homogeneous, and horizontal level distribution. (2) The soil material behavior was assumed to be governed by an elasto-plastic constitutive relation based on the Druck-Prager criterion. (3) The influence of groundwater was not taken into consideration.
Fig. 1 Model grid Table 1 Soil and material parameters Material type Thick- ness(m) Elasticity modulus (MPa) Poisson's ratio Density (kN/m3) Cohesion (KPa) Friction Angle (°) soil layer 1 6 3.94 0.35 18.28 22 25 soil layer 2 20 20.6 0.3 20.62 20 30 soil layer 3 14 500 0.33 21.6 150 35 segment lining 0.3 27600 0.2 25 / / grouting layer 0.2 1000 0.2 21 / / Results First step excavation.
Acknowledgement The authors gratefully acknowledge the financial support provided by the Science and Technology Scheme of the Guangdong Province (2012A030200003).
Chen: Chinese Journal of Rock Mechanics and Engineering, Vol.21 (2002), p.228 (In Chinese)

Old concrete is the most abundant material of these wastes.
Materials and methods This study is based on laboratory made RCA by crushing old concrete that prepared in the laboratory with water-cement ratio of 0.6 and curing 90 days in the water.
[8] Arandigoyen M, Bicer-Simsir B, Alvarez JI, Lange DA: Applied surface science.
Vol. 37(2007), p 1059-69 [10] Zhao Z, Remond S, Damidot D, Xu W: Journal of Sustainable Cement-Based Materials.

Introduction Cellular polymers like silicone rubber foams and polyurethane foams have excellent properties, such as high temperature resistance, corrosion proofing, oxidation resistance and large deformations, and are usually used as cushions, padding, and packaging materials.
Moreover, two parameter Mooney-Rivlin strain energy potential model is introduced to characterize the hyperelasticity of the solid from which the foams are made, (1) where W is strain energy function, C1 and C2 are material parameters, and I 1 and I 2 are the first and second invariant of the right Cauchy-Green strain tensor.
Acknowledgments This work is financially supported by the National Basic Research Program of China (973 Program, 2010CB832700) and the key project of Foundation for Development of Science and Technology by China Academy Engineering Physics (CAEP) (Grant No. 2008A0302011).
Van der Burg et al.: Mechanics of Materials, Vol. 30(1998), p.125 [3] M.W.D.
Lu: Journal of Mechanical Strength, Vol. 29(2007), p.627 (in Chinese)