Electromagnetic interference of nickel ferrite and copper ferrite filled low-density polyethylene composite

Abstract

<jats:p> This study reports the preparation of nickel ferrite (NiFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub>) and copper ferrite (CuFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub>) filled low-density polyethylene (LDPE) composite through a melt mixing process for employing in electromagnetic shielding applications. The X-Ray diffraction (XRD) with different pH values 6, 8 and 10 resulted the formation of cubic structure for NiFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> of cristallite size 21 nm, 25 nm and 40 nm, respectively and tetragonal structure for CuFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> with crystallite size 27 nm, 24 nm and 91 nm, respectively. Electromagnetic interference (EMI) shielding measurements of the prepared samples LDPE/NiFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> and LDPE/CuFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> having different pH values 6, 8 and, 10 for 10% and 30% filler concentrations were analyzed over X-band with a frequency range from 8 GHz to 12.4 GHz. The pure LDPE exhibits the total shielding effectiveness (SE) of 11.6 dB whereas with the addition of NiFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> and CuFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub>, the composites exhibit increment in EMI shielding effectiveness up to the maximum value of 15.3 dB for LDPE/NiFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> and 12.6 dB for LDPE/CuFe<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> respectively. </jats:p>

A comparison on microstructure and mechanical properties of electric discharge metal matrix nickel and silica composite coating on duplex stainless steel

“…The diffused carbon with nickel as alloying elements are homogenization with inter dendrite grain boundaries at lower temperature having non-uniformity delivers lack in both mechanical and metallurgical properties on coating, later cored structure iron improves those properties. 21 Electrical conductivity deserves the structure that presents in the coating copper together with nickel having higher solute in metal that dissolves in to carbon that increases deposition efficiency up to 25% for nickel and copper at range to 15% remains other elements hold other mechanical properties like hardness, toughness, tensile strength etc., is detailed in Figure 5(c) with its thickness variation across in Figure 5(d).…”

“…The variation in loading condition show similar other mechanism like grinding of groves, pits, pull outs, wear debris are common are disclosed in previous research. 16,18–22…”

Study of dielectric and electromagnetic shielding behaviour of BaTiO3‐CoFe2O4 filled LDPE composite

“…The sample material with material and without material was fixed at two ends of the sample port holder. Already reported in our work 24 thereafter the VNA is connected with these two end port cables. The incident electromagnetic wave was in some measure reflected, absorbed and, transmitted through the medium.…”

Cross‐linking, mechanical, dynamical, and EMI absorption shielding effectiveness of NBR based composites filled with combination on ferrite and carbon based fillers

“…A lot of works have been devoted to the fabrication and investigation of polymer composites with incorporated carbon based fillers 12‐17 or ferrites 18‐21 . The results revealed that such composites can be used as efficient EMI shields.…”