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首页> 外文期刊>Polymers for advanced technologies >Enhanced mechanical properties and self-heating performance of few-layer graphene-poly vinylidene fluoride based nanocomposites
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Enhanced mechanical properties and self-heating performance of few-layer graphene-poly vinylidene fluoride based nanocomposites

机译：Enhanced mechanical properties and self-heating performance of few-layer graphene-poly vinylidene fluoride based nanocomposites

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摘要

The development of a lower voltage induced high-performance self-heating nanocomposite materials for jole-heating applications has been an intense challenge. Here in, we report a poly vinylidene fluoride (PVDF)/few layer graphene (FLG) based high-performance self-heating nanocomposites fabricated via facile solution casting method. The as fabricated PVDF-FLG nanocomposites were tested by various characterization techniques such as X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and field emission-scanning electron microscopy. Mechanical and electrothermal properties were investigated by universal testing machine and IR thermography. Use of increasing content of FLG from 4 to 16 wt%, as an electrically and thermally conductive filler significantly enhanced the electrical conductivity, mechanical properties, and joule heating efficiency of the nanocomposites. The conductivity of PVDF-FLG nanocomposites increased from 0.022 S/cm to 0.815 S/cm and tensile stress improved from 27.1 MPa to 48.6 MPa with increase of FLG content from 4 wt% to 16 wt% respectively. As revealed by the IR thermography results, the joule heating effect of the nanocomposites was dominated by applied voltage and FLG content of the nanocomposites. The temperature of the nanocomposite with the highest FLG content that is, PVDF-FLG 16 exhibited significant increase in temperature from 38.6 to 155 degrees C degrees C with increase of applied voltage from 4 to 16 V respectively. Therefore, these self-heating PVDF-FLG nanocomposites have the great potential to be used in various joule heating applications owing to their efficient heating with low-power consumption.

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