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Solution Blow Spun High Performance Co-Polyimide Nanofibers Jing Li1, Junrong Yu*1,a, Jing Zhu2, Yan Wang2, Zuming Hu*1,b and Guocheng Song1 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 201620, Shanghai, China 2College of Material Science and Engineering, Donghua University, 201620, Shanghai, China ayjr@dhu.edu.cn, bhzm@dhu.edu.cn Keywords: Nanofibers, Solution blow spinning, Co-polyimide.
Nanofibers have larger specific surface area, smaller pores, nanoscale fiber diameters and other better performance compared to traditional polyimide materials[7-9].
Zhang, Structures and properties of polyimide fibers containing ether units, Journal of Materials Science 50 (2015) 4104-4114
Klamczynski, Solution blow spinning: A new method to produce micro - and nanofibers from polymer solutions, Journal of Applied Polymer Science 113 (2009) 2322-2330
Orts, Structural and Morphological Characterization of Micro and Nanofibers Produced by Electrospinning and Solution Blow Spinning: A Comparative Study, Advances in Materials Science and Engineering 1 (2013) 438-442

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Materials and methods According to the different green plants phenology and distribution in Anshun City, 4 arbors(C. camphora, M. grandiflora, P. massoniana, P.acerifolia）, 4 shrubs(L. quiuoni , R.simsii , E.japonicus, E. varorientalis), 4 flowers and herbs(T. pretens, F.arundrnace, S. splendens , T. erecta) and 4 climbing plants(P. trcuspidata, L.masckii , W.
Floribounda , H. nepalensis) were selected for research materials.
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Study on ecological benefits of urban near-natural forests[J].Journal of East China Normal University(Natural Science),Vol 5(2009),P. 5:64-75

Materials and methods According to the different green plants phenology and distribution in Anshun City, 4 arbors(C. camphora, M. grandiflora, P. massoniana, P.acerifolia）, 4 shrubs(L. quiuoni , R.simsii , E.japonicus, E. varorientalis), 4 flowers and herbs(T. pretens, F.arundrnace, S. splendens , T. erecta) and 4 climbing plants(P. trcuspidata, L.masckii , W.
Floribounda , H. nepalensis) were selected for research materials.
Tridimensional green biomass-urban forest evaluation of new methods[J].Journal of Shandong Forestry Science and Technology,Vol 3(2009),P. 114-115 [11] Han H.J.
Study on the eco-physiological functions of main plant species in Harbin City[J].Journal of Jiangsu Forestry Science & Technology,Vol 32(2005),P.5-10 [12] Lin Y.D.
Study on ecological benefits of urban near-natural forests[J].Journal of East China Normal University(Natural Science),Vol 5(2009),P. 5:64-75

Forging process work hardening and material softening coexist.
Blank materials brand 40Cr [20-900 ℃], using just (sticky) plastic flow stress model: Where: is an equivalent strain, is an equivalent strain rate, T is deformation temperature.
Material Dynamic Recrystallization Evolution Model[4].
(2) With the pressing rate increases unceasingly, dynamic recrystallization volume fraction, when the pressure under the rising rate 30%, materials department is 67% of regional heart full modification
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Each of these regions was described in terms of a characteristic mechanical property, which was a function of mechanical strength of the solid material and cellular parameters.
Fig. 4 Finite elements boundary condition Meshing and physical properties of material.
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Thus, these ceramic-metal composites also play an important role in the structure materials, and it was so-called “cermets”.
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This is the steady deterioration of materials, particularly metals, via reactions with other molecules in their surroundings.
However, the cost and availability of materials restrict the choice of protective techniques.
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