Electrical conductivity of polyethylene-neodymium composites

Dielectric losses in polyethylene/neodymium composites

“…A 50 cm 3 mixing chamber of a Brabender Plasti-Corder LabStation was used for mixing and homogenizing Neodymium powder with the polymer matrix and the compatibility agent (5 wt % MA-PE). Metal powders (concentration of 5, 10 and 15 wt %) were slowly added (~ 2 minutes) to the mixture of PE and MA-PE and mixed at 160 0 C, for 8 min (the speed of the rotors being 100 rpm) [14].…”

“…After pressing, the samples were cooled to room temperature under a pressure of 5 bars. The structure of samples and the dispersion of neodymium particles in polyethylene matrix were analyzed using the optical microscopy (with a NIKOV TI-e microscope) and Scanning Electron Microscopy SEM (with a workstation Karl Zeiss SMT-model AURIGA and detector type EVERHART-THORNLEY) [14].…”

“…Properties of composites materials depend, on one hand, on the matrix and filler characteristics, and on the other hand, on the technological processes parameters and environmental action [12][13][14]. The influence of nature, concentration and filler dimensions on the properties of polymer composites with conductive [15][16][17][18] or magnetic [14], [19][20] fillers was studied in several papers.…”

“…An experimental study concerning the electrical conductivity -measured in DC and AC regime -of some polymer composites from polyethylene and neodymium particles is presented in [14]. Experimental and theoretical determination of the permittivity using the dielectric response function is presented in [23].…”

“…The influence of nature, concentration and filler dimensions on the properties of polymer composites with conductive [15][16][17][18] or magnetic [14], [19][20] fillers was studied in several papers. It is shown that there is a critical concentration for that the percolation process occurs, leading to important variations of the electrical conductivity, permittivity and dielectric losses [14], [21][22] and magnetic properties [20].…”