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Synthesis and characterization of biphenylnate liquid crystalline polyurethanes Jian-feng Ban, Shao-rong Lua and Chen-xi Zhang Institute of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, China a gllushaorong@glite.edu.cn Keywords: Liquid crystal polyurethane; Thermotropic; Phase transition temperature Abstract.
Introduction In recent years, with the rapid development of science and technology, there has been increased interest in synthesis of new liquid crystal materials.
Even though polyurethanes contribute to a broad spectrum of applications, liquid crystalline behavior in these materials is a recent development [5].
Molecular structure of BLCPs Experimental Materials 4,4'-dihydroxybiphenyl (AR) and 2,4-TDI (2,4-toluenediisocyanate)(AR)(Shanghai Chemical Reagents Company, China) were used as received without further purification.
Alizadeh: Iranian Polymer Journal Vol. 5 (2006), p.385 [7] H.

Experimental materials and methods Experiment materials.
The storage modulus represented the material stiffness.
Study on radial bamboo filament curtain composite plywood .Forestry Science＆Technology[J]. 2012,37,(4),27-30 [4] Du Chun-gui, Jin Chun-de.
Advanced Materials Research[J]. 2013, 690-693:734-737 [5] Guan Ming-jie, Zhang Qi-sheng.Hygrothermal effects of bamboo by dynamic mechanical analysis.Journal of Nanjing Forestry University(Natural SciencesEdition) [J].2006,30,(1),65-68 [6] Huang Xiao-dong, Jing Zhe-hui, Cheng Hai-tao,et al.
Study on dynamie mechaulcal thermal analysis for green coveringof bamboo.China Forestry Science and Technology[J].2008,22,(5),45-47 [7] Huang Xiao-dong, Jing Zhe-hui,Cheng Hai-tao,et al.Study on bamboo dynamic mechanical thermal analysis as reinforcement of wind turbine blades composite materials.World Bamboo and Rattan[J]. 2008,6,(3),6-9 [8] Deng You-e, Zhang Wen-gong.

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Color figures are welcome for the online version of the journal.
Clem: submitted to Journal of Materials Research (2003) [5] P.G.
Chatzinikolaou, On-line fault detection techniques for technical systems: A survey, International Journal of Computer Science & Applications. 1 (2004) pp.12–30

The raw materials market, including for quartz, is today highly globalized.
To date it has been common mining practice to extract material first and then classify it according to quality.
The images clearly identify the locations of materials in the vein, whether silicon metal, ferrosilicon, aggregate or kaolin.
Application to the estimation of quartz deposit reserves, submitted to Journal of Stochastic Environmental Research & Risk Assessment (SERRA) (2011)
Coombes: The Art and Science of Resource Estimation, edited by Coombes Capability (2008)

Experimental tests Materials preparation.
Materials and Structures, Vol. 31(1998) p. 111–117
Progress in Materials Science, Vol. 73 (2015) p. 44-126
Open Journal of Composite Materials, Vol. 4 (2014) p. 12-21
Smart Materials and Structures, Vol. 23 (2014) p. 1–10

Influence of Heat Treatment on Corrosive Property of 5083 Aluminum Alloy Chunhong Li 1,a, Chunmei Li 2,b and Dengming Chen 1,c 1 School of Metallurgical and Materials Engineering , Chongqing University of Science and Technology,Chongqing 401331,China 2School of Materials Science and Engineering,Southwest University,Chongqing 400715,China aemail:chunhong222@sina.com;bemail:1246369254@qq.com; cemail:cdming62@126.com Keywords: 5083 aluminum alloy; Heat treatment; Intergranular corrosion; Electrochemical corrosion Abstract.
However, equiaxed grains were exhibited through annealing, there was lattice dislocation at the grain boundaries, hindering materials’ plastic deformation, making materials’ hardness increase[11].All mentioned above made the hardness of TO1 and TO2 states higher than O states.
References: [1] Tamara R , Miljana P and Endre R:Materials Characterization,Vol.65(2012),p.16
[5] Searles.J L,Gouma.P I and Buchheit.R G:Metallurgical and Materials Transactions, Vol.32(2001) , p. 2859
[6] Popovic M and Romhanji E:Journal of Materials Processing Technology, Vol. 125/126 (2002)No.76,p.275

Introduction Iron-based composites reinforced with hard ceramic particles are a new class of advanced materials proposed mainly as wear-resistant parts.
As a result, there has much difference for the surface generation mechanism and morphology of this composite compared with that of ordinary monolithic metallic materials.
[3] Lifa Han, Shengguan Qu, Applied Mechanics and Materials,Vol.26-28(2010),p.1052-1055
Mei, Y.W.Yana,et.al., Materials Letters Vol.57 (2003), p. 3175-3181
[10] K.C.Chan, et.al., International Journal of Mechanical Sciences Vol.43 (2001),p. 2047-2068.

Introduction With the development of science and technology and the improvement of industrial automation, especially the extension of the scope of electromagnetic technology, large-scale electrical components and electrical equipments are growing needed in industrial application, and the friction are served in the electromagnetic conditions [1-2].
Since the majority of friction pairs materials are magnetic steel in actual working condition, so many features of steel materials will be changed under the effect of magnetic field [3-4],such as increasing the adsorption capacity and oxidation capacity to wear debris, as well as improving the strength of magnetic material and so on [5].The temperature and the normal pressure between friction pairs are important working conditions parameters in the research, but the study on the normal load effect on the temperature rise is rare.
Table 1 Properties of materials Density (kg·m-3) Specific heat Capacity (J·kg-1·℃-1) Heat conductivity coefficient (W·m-1·℃-1) Elasticity modulus E/GPa Friction coefficient Poisson ratio Dilatation coefficient (×10-6·℃-1 ) 7930 502 12.1 190 0.2 0.3 16 2.3.2 Coupling boundary conditions In order to obtain the determined solution for the differential control equation of temperature field, the initial conditions and boundary conditions of differential equation should be given.
Acknowledgements The authors would gratefully thank for the Youth Science and Technology Fund of Sichuan Province (No.2011JQ0039), the Talent Fund of Xihua University (No.R0920203), and the Science and Technology Fund of Ministry of Human Resources and Social Security of the P.R.
Law study on friction and wear with electric current [J].Materials protection, 2004, 132-133, 138.（ In Chinese） [5] Yongzhi Xu.Influnce of Dc magnetic field intensity on properties of friction pair of ferro magnetic material[J]. journal of Anyang Institute of Technology, 2009, 6-10.（ In Chinese） [6] Guozhi Zhang, Renxi Hu, Jigang Chen,etc.

It provides an effective way for the precision cropping of the metal bars with different material
International Journal of Advanced Manufacturing Technology 36(3-4) (2008) 288-295
International Journal of Mechanical Sciences 48(12) (2006) 1333-1340
International Journal of Advanced Manufacturing Technology 36(3-4) (2008) 288-295
Journal of plasticity engineering 14(1) (2007) 66-71.

Introduction With high-strength, lightweight materials be widely used in the frame structure, the deformation of bars represents the strong nonlinear, such as large displacement, large rotation and so on (strain remained within the elastic range), especially for large span, heavy load, and the towering truss structures, this phenomenon is more obvious.
(3) The material of beam element is isotropic linear elastic, and follows the generalized Hooke’s law.
Jiang and Chen DCH: Journal of Sound and Vibration, Vol. 274 (2004), p. 863~875 [4] K.J.
Huang: Journal of Sound and Vibration, Vol. 246 (2001), p. 389~402 [7] K.E.
New York: McGraw-Hill, (1991) [11] Zhida Chen, in: Large deformation theory of link, plane, shell, Beijing: Science Press. (1996) (in Chinese)