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Study on the Crystallization Behavior of PAN Fibers during Hot-Drawing Process in Supercritical Carbon Dioxide Fluid with Different Strain Mengmeng Qiao1,a, Haijuan Kong2,b, Xiaoma Ding1,c, Zhifeng Hu1,d, and Muhuo Yu1,e* 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Shanghai Key Laboratory of Lightweight Composite, Donghua University, Shanghai 201620, China 2School of Materials Engineer, Shanghai University of Engineer Science, Shanghai 201620, China a2160320@mail.dhu.edu.cn, bKonghaijuan@sues.edu.cn, c1159124@mail.dhu.edu.cn, d2160226@mail.dhu.edu.cn, edhuyumuhuo@163.com Keyword: Polyacrylonitrile fibers, X-ray diffraction, crystallization behavior, supercritical carbon dioxide fluid, hot-drawing Abstract.
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The development of multi-scale modeling methods reveals to be of undeniable practical importance, especially to describe and predict the mechanical properties of structural materials.
Moreover, Graphene with its higher mechanical properties can be regarded as a reinforcing matrix material.
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The material can effectively improve the toughness, but fiber added in materials will fall off from the matrix when members after cracking and capacity will decline.
Generally the materials need add the large volume fraction fiber in concrete.
Acknowledgements This work was financially supported by the Jiangxi Science and Technology Project of Education Department (GJJ13725).
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Jun-hang Guo [2] studied the ductile fracture of 5052 aluminum alloy through experiments and established a modified Rousselier model to predict the shear failure of materials.
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Introduction The need for new materials with a desired level of properties contributes to the development of novel composite materials.
The use of solid-phase processes to produce new materials is currently an intensively developing area of physical materials science as this will allow to solve the problem of creating new light-weight and high-temperature composite materials with improved physical properties.
Diffusion bonding is another attractive processing method to obtain multilayer metal materials.
International Journal of Minerals, Metallurgy and Materials 25 (2018) 564–572
Korznikova, S.Y.Mironov, A.V.Korznikov, A.P.Zhilyaev, T.G.Langdon, Microstructural evolution and electro-resistivity in HPT nickel, Materials Science and Engineering A, 556 (2012) 437-445

It is shown that the processing platform is able to meet the requirements of any angle positions of various materials processing, and realize material special machining.
Introduction With the progress of science and technology, and the development of industry, robot has been widely used in some fields, such as: motion simulators, manipulators, posing alignment of material special machining and so on.
The Huazhong University of Science and Technology and the Taiwan Industrial Research Institute developed a similar hybrid machine [2].
So the mechanism can realize requirements of material special machining, and can be widely used in other material processing productions.
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