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    Synthesis, analysis and simulation of carbonized electrospun nanofibers infused carbon prepreg composites for improved mechanical and thermal properties

    Date
    2016-09
    Author
    Alarifi, Ibrahim M.
    Khan, Waseem Sabir
    Rahman, A. K. M. Samsur
    Kostogorova-Beller, Yulia
    Asmatulu, Ramazan
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    Citation
    Alarifi, I.M., Khan, W.S., Rahman, A.S. et al. Synthesis, analysis and simulation of carbonized electrospun nanofibers infused carbon prepreg composites for improved mechanical and thermal properties. Fibers Polym (2016) 17: 1449-1455
    Abstract
    This paper reports the fabrication, characterization and simulation of electrospun polyacrylonitrile (PAN) nanofibers into pre-impregnated (prepreg) carbon fiber composites for different industrial applications. The electrospun PAN nanofibers were stabilized in air at 270 degrees C for one hour and then carbonized at 950 degrees C in an inert atmosphere (argon) for another hour before placing on the prepreg composites as top layers. The prepreg carbon fibers and carbonized PAN nanofibers were cured together following the prepreg composite curing cycles. Energy dispersive X-ray spectroscopy (EDX) was carried out to investigate the chemical compositions and elemental distribution of the carbonized PAN nanofibers. The EDX results revealed that the carbon weight % of approximately 66 (atomic % 72) was achieved in the PAN-derived carbon nanofibers along with nitrogen and lower amounts of nickel, oxygen and other impurities. Thermomechanical analysis (TMA) exhibited the glass transition regions in the prepreg nanocomposites and the significant dependence of coefficient of thermal expansion on the fiber directions. The highest value of coefficient of thermal expansion was observed in the temperature range of 118-139 degrees C (7.5x10(-8) 1/degrees C) for 0 degree nanocomposite scheme. The highest value of coefficient of thermal expansion was observed in the temperature range of 50-80 degrees C (37.5x10(-6) 1/degrees C) for 90 degree nanocomposite scheme. The test results were simulated using ANSYS software. The test results may be useful for the development of structural health monitoring of various composite materials for aircraft and wind turbine applications.
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    URI
    http://dx.doi.org/10.1007/s12221-016-6179-3
    http://hdl.handle.net/10057/12528
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