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http://dx.doi.org/10.14775/ksmpe.2019.18.4.109

Effect of Thermal Pressing Temperature on the Mechanical and Material Properties of Electro-spun Polyacrylonitrile Nano-fibrous Separator  

Kim, Minchoel (School of Mechanical Engineering, Yeungnam Univ.)
Ko, Tae Jo (School of Mechanical Engineering, Yeungnam Univ.)
Arifeen, Waqas Ul (School of Mechanical Engineering, Yeungnam Univ.)
Dong, Ting (School of Mechanical Engineering, Yeungnam Univ.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.4, 2019 , pp. 109-116 More about this Journal
Abstract
The mechanical deformation of a battery separator causes internal short-circuiting of the cathode - anode, which directly affects the explosion/ignition of batteries. To increase the mechanical properties of the separator fabricated by electro-spinning, use of a thermal pressing method is inevitable. Therefore, this research aims to maximize the mechanical strength of a porous separator by finding the proper thermal press temperatures given to Electro-spun Polyacrylonitrile (PAN) nanofibers. The different thermal press temperatures $25^{\circ}C$, $50^{\circ}C$, $75^{\circ}C$, and $100^{\circ}C$ were applied to the electro-spun fiber at 30 MPa pressure for one hour. The higher the temperature, the higher the resultant tensile strength; however, a higher temperature also lowered the strain and porosity. Thus, the membrane thermal pressed at $50^{\circ}C$ showed the best mechanical properties and the second highest porosity. Using the data, $50^{\circ}C$ was judged as the best thermal pressing temperature in terms of performance.
Keywords
Separator; Electrospinning; Thermal press temperature; Mechanical properties; Porosity;
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