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According to the chemical composition of materials they can be divided into: inorganic phase change materials; organic phase change materials; phase change materials; and, mixed categories.
References [1] LV Xuewen, KAO Hongtao, Progress in Composite Phase Change Energy Storage Materials[J], Journal of Materials Science & Engineering, No.(5),Vol.(28), 2000:797-799
Luyt, Polypropylene as a potential matrix for the creation of shape stabilized phase change materials [J], European Polymer Journal, 2007, 43: 895-907
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First-Principles Calculation of Intermetallics on Novel Anode Materials Jin ZHANG1,a, Pei-xian ZHU1,b, Sheng-gang ZHOU1 and Jia-xin GUO1 1Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China azhangjin819@hotmail.com, bzhu_pei_xian@163.com, Keywords: Sandwich structure, composite materials, diffusion sintering with pressing in vacuum, intermetallic compounds, first-principles calculation.
Our team proposes the design concept of layered composite electrode materials.
So we propose the design concept of layered composite electrode materials.
Computational Materials Science, 50(2011),p.1467-1476
Materials Science&Technology, 15(2007), p.47-51

However, social and economic development is supported by a large number of various types of raw materials.
Therefore, the resource-saving and environment friendly development of materials and their industry has becoming the material foundation for sustainable development of social and economic, eco-materials are also researched and universally applied, and project investment of eco-materials is gradually increasing.
Consequently, the model helps to disperse and control investment risk of eco-materials indurstry, and then advance the success rate of eco-materials indurstry investment.
Institute of Computer Science Warsaw University of Technology. 1993 [7] R.
International Journal of Pattern Recognization and artificial intelligence. 2005, 5: 663-680

All materials are to be made in English, while teaching is made by half English and half Chinese.
Methods and problems of teaching in and preparing materials for the bilingual courses were studied [2].
Meanwhile environment of world is being damaged with fast growth of science and technology.
[2]Wang Tianjing: Journal of Research on Education for Ethnic Minorities, Vol.18(2007):92-97
[6] Miles, M: Journal of Quality Material, Vol.4 (1999), p.111

The simulation results based on the different rubber materials reveal that the selection of the shape of the cavity depends on the material characteristic.
The materials include the Chlorosulfonated polyethylene rubber and steel, and the perforation coefficient is 0.2 , 0.3 , 0.4 respectively.
As shown in Fig.7, the difference between materials leads directly the difference between the cavity structures.
Tab.1 Optimized result of different materials in the same request materials Maximum of reflection coefficient Mean of reflection coefficient Average deviation of reflection coefficient nitrile-butadiene rubber 0.0600 0.0514 0.0045 Butyl rubber 0.0625 0.0512 0.0048 Chlorosulfonated polyethylene rubber 0.0600 0.0516 0.0048 Fig.6 Reflection coefficient curves of different materials in the same request Fig.7 Perforation coefficient curves of different materials in the same request Conclusion Through the above simulation analysis, we will draw the following conclusion: 1.
Journal of Marine Science and Technology, 2007, 15(4)：351-359

Journal of Functional Materials and Devices, 2010 16 (3) 222-226
[6] Liu Rui, WANG Hong, Li XuePing, et al., A micro-tensile method for measuring mechanical Properties of MEMS materials, Journal of Micromechanics and Micro engineering. 18 (2008) 065002 [7] Liu Rui, Study Of Mechanical Properties of Micro-Scale Materials by Micro-Tensile System and Method, Shanghai Jiao Tong University, 2009
High strength and high ductility of electrodeposited nanocrystalline Ni with a broad grain size distribution, Materials Science and Engineering: A. 487 (2008) 410-416
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The study on application of artificial board materials in musical instrument-Manufacturing Engineering Hui Yong Zhang He Bei Normal University of Science and Technology, China email: ysxyzhy@163.com Keywords: Artificial board materials; Musical instrument-Manufacturing Engineering; Application Abstract.
International Journal of Materials in Engineering Applications, Volume 1, Issue 5, September 1979, Pages 250-259
Journal of Cultural Heritage, In Press, Corrected Proof, Available online 7 May 2012
Musical Instruments: Materials.
Encyclopedia of Materials: Science and Technology (Second Edition), 2001, Pages 5893-5895.

Research on properties of low grade cement-based composite materials modified by silica fume XU Zi-fang*, ZHANG Ming-xu, Li Jin-hua Department of Material Science and Engineering, Anhui University of Science and Technology, Huainan china 232001 [Corresponding author]:XU Zifang,PhD, associate professor,Tel:18855406089; E-mail: zhfxu@aust.edu.cn Key words: silica fume; cement-based material; hydration products ; durability Abstract: In order to notably improve the mechanical properties and durability of low-grade cement-based material, superfine silica fume was used to modify the cement-based composite based on special perfomance and effects of nano powder.
Experimental 2.1 Main raw materials (1) cement: composite portland cement of 32.5, the chemical composition and mineral composition of cement shown in tab.1.
[5]Mo Liwu,Deng Min.Cement and Concrete Research, 2006,36（3）：1992-1998(in chinese) [6]DU Ying-ji,HAN Su-jian,YAO Ru-fang.Journal of Northwest Sci-tech University of Agriculture and Forestry ( Natural science edition ), 2004,7(7)：107-110.
New Building Materials, 2001(11):4-7.
(in chinese) [11]SHAOHui-fang,LIUChang-sheng,HUANGYue.Journal of Inorganic Materials, 2001,16（5）:933-938.

Introduction The active development of materials science has led to the appearance of new polymer binders types with increased rheological and strength indicators and composite materials based on them.
Environmental impact of food packaging materials: A review of contemporary development from conventional plastics to polylactic acid based materials, Materials. 13(21) (2020) 4994
Safin, Study of the destructive properties of biodegradable wood-filled composite material,Materials Science Forum. 992 (2020) 290-295
Shaikhutdinova, Research of biodegradable wood completed composite materials based on polylactide, Journal of Physics: Conference Series. 1399(4) (2019) 044117
Voronin, Analysis of physico-mechanical properties of composites based on polylactide and thermally modified wood fibers, Materials Science Forum. 870 (2016) 202-206.

The article deals with testing materials for using in enthalpy exchangers.
Zhang, Membrane-based Enthalpy Exchanger: material considerations and clarification of moisture resistance, Journal of Membrane Science 189 (2001) 179–191 [5] E.
Zhang, Evaluation of moisture diffusivity in hydrophilic polymer membranes: A new approach, Journal of Membrane Science 269 (2006) 75–83 [9] L.Z.
Pei, Heat and moisture transfer in application scale parallel-plates enthalpy exchangers with novel membrane materials, Journal of Membrane Science 325 (2008) 672–682 [10] ASTM: E96. 2000.
American Standard Test Methods for Water Vapor Transmission of Materials, American Society for Testing and Materials, 842-849 [11] P.