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Polyvinylidene fluoride (PVDF) is one of the popular membrane materials due to its outstanding properties including thermal stability, chemical resistance and excellent mechanical strength and has been widely used for MD [2].
These properties coupled with its intrinsic hydrophobicity have made PVDF popular as a membrane material in many membrane processes such as membrane-based gas absorption, MD and other types of membrane contactor applications.
Materials and Methods Materials The materials that were used in this experiment were PVDF polymer (MW = 440,000 g/mol) was purchased from Sigma–Aldrich Chemical Co.
Alsalhy, Hydrophobicity enhancement of poly (vinylidene fluorideco-hexafluoro propylene), Journal of Polymer Science and Technology,1 (2015)1-9
Journal of Physical Science, 30(2019)207–221.

The final microstructure is strongly related to the cooling of droplets and deposited materials [3].
Materials Review. 16(2002)11-14
Archives of Metallurgy and Materials. 56(2011)245-261
Archives of Metallurgy and Materials. 57(2012)7-17
Journal of Materials Processing Technology. 213(2013)401-410.

Sintering of ceramic materials at high pressure can compact the powder of green density and increase the contact area of powders, that shorten sintering time.
According to the above discussion, under high pressure, sintering temperature plays an important role in the fabrication of AlN bulk materials, and the method works well at low sintering temperatures (only 1300 ˚C) and short holding times (only 50min).
And under high pressure, high-density AlN bulk materials can be fabricated with low sintering aids or without additives at a low temperature for a short time.
Acknowledgements This work was financially supported by the Education Department of Heilongjiang province science and technology project (11551518).
:Journal of The American Ceramic Society Vol.44 (1961) p.255-258 [5] K.

Study on Microstructure Characterization of Al-N codoping ZnO films and doping mechanism Ying Xu1,a, Juan Wang1,b, Yubo Dou1,c 1Hebei Province Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, Hebei Polytechnic University, Tangshan 063009, Hebei ,China ayuyingdd@yahoo.com.cn, bwangjuan198254xx@163.com, cdouyubo@sohu.com Key word: co-doping, AFM, XPS, microstructure, doping mechanism Abstract: Al-N codoped ZnO thin films were prepared by sol-gel method, which microstructure were characterized by AFM and XPS, on the basis of the result, doping mechanism of Al-N co-doped thin film is: the formation of the first occurrence of Al was replacing doping system of Zn, and it is conducive for N element in the system to the solution along with the increasing of Al doping concentration.
Introduction In recent years, because of its excellent light transmittance and conductivity, low price, no toxicity for the advantages, wide band gap semiconductor material ZnO film has been concerned for a new type of semiconductor material, especially easy to have flaw and to carry out the impurity doping, some more outstanding performance doping thin films had been obtained, and such research becomes hot at home and abroad[1,2].
Journal of Functional Materials, Iss. 1, (2007), p. 49-53.

In literature[1-6], the effect of material parameters and process parameters on the LDR is summarized.
The Hill90 anisotropy yield criterion is taken as the material yield criterion.
The simulation and experiment of deep drawing has the same material parameters, thickness and process parameters.
Li: Materials for Mechanical Engineering (2001), p. 15
Zhao: Natural Science Journal of Xiangtan University Vol. 27 (2005), p.136.

Introduction In the year 1839, French engineer J.V.Poncelet [1] firstly used the technical term “Fatigue” to describe the material in effect of cyclic stress or cyclic strain, due to one point or some points gradually produced a permanent local structural changes, thus forming cracks or breaks in a certain number of load cycles later.
The material of the plate is 2024-T62 aluminum alloy, the thickness is 2mm, the fracture toughness, the tensile strength, the yield strength, the elastic modulus E =69GPa, the Poisson's ratio ν=0.3 [6].
Journal of Materials Science Vol. 37(17) (2002), p. 3675-3683 [3] J.J.
Mechanics of Composite Materials Vol. 43 (2007), p. 9-28 [5] J.H.
Comput Mech Vol. 21 (1998), p. 477-482 [6] Mechanical Engineering Material Property Data Handbook (Mechanical Engineering Material Property Data Handbook Editorial Board, 1995)

In this article we will look at how this method allows us to assess the quality of materials and the amount of phthalates in them.
Thus, the use of Raman spectroscopy is a good express method for determining the quality of building materials.
We have shown that this approach allows you to quickly analyze building materials made of PVC and identify samples with a high phthaloto content.
Acknowledgements The work was supported by a grant from the Russian Science Foundation No. 15-14-20032-P.
Journal of Analytical and Applied Pyrolysis. 91 (2011) 34-39

Results and Discussion In recent years the attention of investigators in the field of physical materials science has been paid to the study of the effect of electro-pulse treatment on structure, phase composition and defect substructure of different metals and alloys in rolling and drawing [1-5].
[2] Electromagnetic fields effect on the structure and characteristics of materials Book of the International seminar articles, Yu.
[3] Fundamental Aspects of External Fields Action on Materials Book of the International seminar articles, V.
Fu, Properties, microstructure and texture evolution of cold rolled Cu strips under electropulsing treatment, Journal of Alloys and Compounds. 544 (2012) 203-208
Simakov et al, Thyristor generator of powerful unipole current pulses, Electron treatment of materials. 3 (1981) 72-73

Effect of Voltage on Mg-Li-Al Alloy Anodic Oxide Film Naoya Miyakita1,a*, Natsuki Tanigaki2, Taiki Morishige2,b, and Toshihide Takenaka2,c 1The graduation School of Science and Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, Japan 2Department of Chemistry and Materials Engineering of Kansai University, 3-3-35, Yamate-cho, Suita, Osaka, Japan ak008090@kansai-u.ac.jp, btmorishi@kansai-u.ac.jp, cttakenak@kansai-u.ac.jp Keywords: Mg-Li　Anodic Oxidation phosphate-based bath constant voltage oxide coating Abstract.
Introduction 　Magnesium-Lithium(Mg-Li) system allys are the lightest structual material in practical metallic alloys.
These properties are originated from Li solid-solution alloy. (1) Mg-14mass%Li-1mass%Al(LA141) alloy has high potential to use structural materials, such as automotive and electric mobile components.
Especially, anodic oxidation could be obtained thick film with high affinity to base material due to oxidation of matrix.
Reference [1] Ryuji Ninomiya Koichi Miyake Journal of Japan Institue of Light metals, vol 51 No.10 (2001), pp509-513 [2] Koji Murakami1, Makoto Hino, Kiyomichi Nakai, Sengo Kobayashi, Atsushi Saijo and Teruto Kanadani Materials Transactions, Vol. 49, No. 5 (2008) pp. 1057 to 1064(a) (c)

Whether strength of the material is affected by welding is highly dependent on the materials and welding parameters.
Cao, "An analytical model for tailor welded blank forming," Journal of Manufacturing Science and Engineering-Transactions of the ASME, vol. 125, pp. 344-351, 2003.
In the case of TWBs, there are two involved pieces with (possibly) different thicknesses and materials properties.
This is because of the fact that HAZ in steel TWBs is stronger than base materials, and has higher elastic modulus.
They concluded that the failure is mainly caused by the thickness difference between the materials.