Exploring the Potential Use of Clean Scrap PVDF as Matrix for Conductive Composites Based on Graphite, Carbon Black and Hybrids: Electromagnetic Interference Shielding Effectiveness (EMI SE)

Dielectric and electromagnetic interference shielding properties of zeolite13Xand carbon black nanoparticles basedPVDFnanocomposites

“…57 However, previous reports have suggested that higher loadings of added fillers and on increasing the thickness of nanocomposites enhanced EMI SE can be achieved. 23,24,27 The obtained EMI SE of PVDF/Zeolite13X/CBNPs nanocomposites is quite satisfactory at such a low thickness. Table 3 in comparison with the present work.…”

“…Also, the specific surface area of nanofiller is the key factor than their electrical conductivity as a result of which the large specific surface area of Zeolite13X and CBNPs plays a vital role in the enhanced performance of EMI shielding 57 . However, previous reports have suggested that higher loadings of added fillers and on increasing the thickness of nanocomposites enhanced EMI SE can be achieved 23,24,27 . The obtained EMI SE of PVDF/Zeolite13X/CBNPs nanocomposites is quite satisfactory at such a low thickness.…”

“…[20][21][22] Besides, PVDF reinforced with various derivatives of carbon has been reported as good shielding materials. For example; Leao et al 23 investigated PVDF composites with CB and expanded graphite by melt processing and observed reflection loss of about −15 dB at a frequency of 12.3 GHz. Wang et al 24 studied PVDF/CB composites containing magnetic carbonyl iron and achieved an EMI SE value of 20-27 dB in 8-18 GHz frequency range with 2 mm thick nanocomposite film.…”

Hybrid carbonaceous materials for radar absorbing poly(vinylidene fluoride) composites with multilayered structures

“…For the preparation of the PVDF nanocomposites, low amount of filler (3 wt%) was chosen based on previous results [23] and on the ability to achieve good absorbing properties with low amount of filler. [45] F I G U R E 1 (A) Naval Research Laboratory (NRL) arch: Antennas Tx and Rx and metal plate (B) signal generator Agilent (83752A), spectrum analyzer Anritsu e (C) assembled triple-layered structure The SEM images of the composites are shown in Figure 2.…”

“…[22] Recently, we reported a synergistic effect of carbon-based hybrid fillers constituted by CB and expanded graphite on the conductivity, EMI shielding effectiveness and absorbing properties of melt blended composites based on recycled PVDF. [23] The EMI shielding mechanism of a CPC is governed by reflection, absorption, and multireflection of the EM radiation. Materials with high electrical conductivity usually present reflection-dominant mechanism whereas dielectric and/or magnetic materials display higher absorption properties.…”