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Modern polymer materials have become important materials in science and technology and economic development because polymer material technologies are mature and same as metallic materials and inorganic nonmetallic materials. 2.1 Cold Insulation Material Properties Cold Insulation refers to heat insulation lower than the external environment temperature.
It is believed that polymer materials are important materials in cold insulation structures.
Zhu: Journal of Daqing Petroleum Institute Vol.19, No.4 (1995), p.125-128
Lü: Plastics Science and Technology Vol.37, No.3(2009), p.40-42
Zhu: West China Journal of Stomatology Vol.26, No.1 (2008), p.15-18

Bledzki, Calculation of elastic properties of natural fibers, Journal of Materials Science, 36 (2001) 3715-3720
Shakhmenko, Ecological materials for frame housing, Scientific Journal of Riga Technical University, Material Science.
Smith, Influence of chemical treatments on adhesion properties of hemp fibres, Journal of Colloid and Interface Science, 356 (2011) 303-310
Sicakova, Utilization of alternative materials in lightweight composites, Journal of Cleaner Production, 34 (2012) 116-119
Schwarzova, Changes in the properties of composites caused by chemical treatment of hemp hurds, International Journal of Chemical, Biomolecular, Metallurgical, Materials Science and Engineering, 8 (2014) 363-367

Emen, Formation of fire retardant properties in elastic silica coatings for textile materials, Materials Science Forum, 1006 (2020) 25–31
Savchenko, Thermodynamic study of fireprotective material, Materials Science Forum. 1038 (2021) 486–491
Kurska, Investigation of the processes of formation of a fire retardant coating, Materials Science Forum, 1038 (2021) 480–485
Obizhenko, Colloid-chemical regularities of reagent wastewater treatment of dairies, Materials Science Forum, 1038 (2021) 235–241
Romanova, Co-Мo-W galvanochemical alloy application as cathode material in the industrial wastewater treatment processes, Materials Science Forum, 1038 (2021) 251–257

Many different kinds of biomass materials are widely distributed rich [3] and have good biodegradability [4], also compared with synthetic polymer materials.
Through physical or mechanical processing [9], biomass materials will be directly made into all kinds of products; by polymer chemical reaction, the use of biomass materials can prepare the material [10] which have different structure and chemical properties; a kind of biomass materials with another kind of biomass material or synthetic polymer materials can also prepare the new material which has better quality by the method of composite or blend [11]; In the presence of catalyst and hot [12], the biomass material transform into smaller molecular weight of chemical raw materials, this is more than ten years gradually arisen a kind of biomass material utilization way.
[8] Lee S H,Teramoto Y,Shiraishi N.Journal of Applied Polymer Science,2000,77:2901
[15] He Weichang,Wang Tianmin.Materials review,2006,20(1):1
[19] Li Zhaojian.Journal of applied foundation and engineering science, 2006, 14(1):40

Electrolyte materials.
Catalyst materials.
Electrode materials.
Catalyst materials.
Catalyst materials.

An example using Petri net to model the process which sailors transfer materials to the storage location as shown in Fig. 1 and Table 1 [4].
Transportation route optimization should consider various irregular external contours of materials, as to avoid collision between materials and the hull on the route planning.
Because in the process of materials transport, there are many factors which can effect on transport efficiency such as channel pass degree, the size of the transport vehicle and materials, queuing situation and so on.
Sillman, in: Material Handling Issues for the 21st Century, Journal of Naval Engineers Journal Vol.112, pp. 83-96, 2000 [2] S.Z.
Huang: Scientific Concept of Man-Machine-Environment System Engineering High Efficiency Silicon Solar Cells (Science Press, China 2004)

Introduction Concrete material is the most commonly used building materials in the world for its high strength and excellent durability.
Materials and Experiment Standard cement.
Application of electrical resistivity measurement for cement-based materials[J].
China building materials academy, 2007.
Journal of materials in civil engineering, 2006:99-105 [11] Xiao Lianzhen, WEI Xiaosheng, LI Zhongjin.

Today, the research on metal materials has made tremendous achievements.
However, still could not escape a large number of experimental methods in studying the performance of metal materials.
Journal of BUPT ( Social Sciences Edition).2001,3(1):44-46
The Parameter Estimation and the Existent Problems Analysis of the Logistic Model: submitted to Journal of SCIENCE & TECHNOLOGY INFORMATION, 2011,(1),p169-170
Steel materials and non-ferrous materials, submitted to Mechanical Industry Press, Beijing 1981.p42

Electrospinning is a novel processing technique for the production of nanofiber non-woven materials and nanofiber non-woven materials have extremely high surface-to-mass (or volume) ratio and a porous structure .for the advantages of electrospun nanofiber non-woven materials, it can be used many filed.
Tissue engineering Tissue engineering, also called regenerative medicine is an interdisciplinary field involving knowledge from medicine, biology, and engineering and materials science fields.
C.Jun: Journal of Central South University of Technology.
[44] Henry T Peng, Martineau Lucie, Andy Hung: Journal of Materials Science.
Materials in Medicin, Vol.19(2008),p.1 803.

Acknowledgements This study was supported by Fujian Provincial Department of Science and Technology (Research Project,2019H6024) References [1] Velauthapillai D,Rasukkannu M, and Vajeeston P 2018 Materials Letters. 218 233-236
[11] Crouch C H, Carey J E, Shen M, Genin F Y and Mazur E 2004 Applied Physics a-Materials Science & Processing 79 1635-1641
[16] Palacios P, Sanchez K, Wahnon P and Conesa J C 2006 Physica Status Solidi a-Applications and Materials Science 203 1395-1401
[25] Kresse G and Furthmuller J 1996 Computational Materials Science 6 15-50
[32] Yang Y, Song T,Zhang X,Zhao Y,Chai J,Cheng Z, Huang X, Zhang H, Zhu W and Yang M 2020 Journal of Materials Chemistry C 8 11778-11785