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Enhanced electromagnetic-interference shielding effectiveness and mechanical strength of Co-Ni coated aramid-carbon blended fabric

引用

Chinese Journal of Aeronautics 2021年第10期34卷 103-114页

作者： Qin WANG Yumeng XU Siyi BI Yinxiang LU Department of Materials Science Fucian UniversityShanghai 200433China

An efficient method was proposed to prepare high-performance conductive aramidCarbon Blend Fabrics(ACBF)with cobalt-nickel(Co-Ni)alloy coatings,which is conducive to industrial *** grid-like substrate composed of aramid and carbon fibers was innovatively used in flexible Electromagnetic Interference(EMI)shielding *** natural network structure is advantageous to the uniform deposition of metal particles to the establishment of conductive pathways subsequently in order to improve *** induction of a synergistic effect from Electromagnetic(EM)wave-reflection and EM wave-absorption through the whole carbonCo-Ni-ternary system notably enhanced the EMI Shielding Effectiveness(SE)value to an average of 42.57 d B in the range of 30-6000 *** the other hand,together with the inherent toughness of the alloy coatings,the tensile strength of the aramid fibers used for bulletproof made a significant contribution to the desired mechanical *** light weight of the resultant composite made it applicable to aerospace vehicles simultaneously.X-ray Photoelectron Spectroscopy(XPS)was conducted to investigate the variations of elements and groups on the sample surface in pretreating *** elemental components and surface morphologies of fabric samples during different stages of the process were investigated by Scanning Electron Microscope(SEM)and Energy Dispersive spectrometer(EDX)measurements.X-Ray Diffraction(XRD)results indicated that the obtained Co-Ni alloy coating had a combined Hexagonal Closed-Packed(HCP)and FacedCentered Cubic(FCC)crystalline *** relatively high corrosion resistance demonstrated in different acid and alkaline conditions was instrumental in more complex environments as well.

关键词： aramid fibers Carbon fibers Cobalt-nickel(Co-Ni)Coating Electroless plating Electromagnetic shielding

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