Electromagnetic Shielding Features in Lightweight PVDF-Aluminum Based Nanocomposites

Abstract

Abstract-Dependence of the electromagnetic shielding effectiveness on filler volume fraction has been investigated from attenuation upon reflection measurements over a broad frequency range in hybrids based on Poly(vinylidene fluoride)-Aluminum nanoparticles. The loss of reflectivity with relation to the incident radiation in these nanocomposites compared with the pristine polymeric matrix shows the maximum value for the sample with an aluminum content of 10% in volume. Furthermore, the morphological aspects of all the specimens as well as their thermal properties, viscoelastic behavior and dielectric response have been evaluated. The nanocomposite that incorporates an Al content of 10% in volume exhibits the best balance in properties including, in addition to its shielding behavior, its processability and mechanical performance.

Biodegradable Polycaprolactone-Titania Nanocomposites: Preparation, Characterization and Antimicrobial Properties

“…Accordingly, a very significant catalytic effect has been reported in hybrids based on Al nanoparticles within a poly(vinylidene fluoride) (PVDF) matrix [36], either under inert or oxidant atmospheres and an important shift of degradation temperatures, around 100 °C down to that found in the pristine matrix, even at a content as low as 1.5 wt.%. Mesoporous MCM-41 silica has promoted the thermal decomposition of hybrids based on polyethylene [37].…”

Electromagnetic interference shielding response and rheological behavior of lightweight nanocomposites based on isotactic polypropylene and Al nanoparticles

“…a SE  20 dB) has been reported in literature [52]. Nevertheless, hybrids based on poly(vinilydene fluoride) and aluminum nanoparticles [53] showed good EMI shielding characteristics at 2 EHz with SE  20 dB [54] without attaining the EPT. Reason for this different behavior might be attributed to the fact that EMI characteristics are dependent on frequency interval of measurements and type of experiments.…”

Co-doped ZnO–PVA Nanocomposite for EMI Shielding

“…In this regard, polymer-matrix composites containing conductive fillers are attractive for shielding due to their processability and low density. Literature studies have been focused on filler's reinforced on thermoplastic polymer composites such as poly(methyl methacrylate) (PMMA) [25,26] , polypropylene (PP) [27] , polyvinylidene fluoride (PVDF) [28,29] , polyacrylate [30] , cellulose triacetate [31] , ethylene vinyl acetate (EVA) [32] , reactive ethylene tetrapolymer (RET) [33] , polycarbonate (PC) [34] and Poly (vinyl alcohol) (PVA) [35] are commonly used as polymer matrix due to flexible molecular chains, high strength and its ductile nature. In order to increase the EMI shielding efficiency, nanofillers doped into polymer matrix should be conducting / magnetic in nature.…”