Title :
Electrical conductivity of polyethylene-neodymium composites
Author :
Stancu, Cristina ; Notingher, P.V. ; Panaitescu, Denis ; Marinescu, Virgil
Author_Institution :
INCDIE ICPE CA, Bucharest, Romania
Abstract :
In this paper, a study regarding the influence of the filler content on the electrical conductivity of low density polyethylene (LDPE)-Neodymium (Nd) composites is presented. Flat samples having the dimensions 100 · 100 · 0.5 mm3 were manufactured from low density polyethylene (LDPE) as polymeric matrix and Nd spherical particles (purity - 99 %) as filler by a melt mixing process using a compatibility agent. The distribution of the particles in the polymeric matrix was analyzed by Scanning Electron Microscopy (SEM) and optical microscopy. The variations of the DC conductivity and AC conductivity with temperature, frequency and filler content were studied. The symmetric hopping model for disordered solids was used to explain the results. Finally, the possibility to use these materials in electrical engineering field is analyzed.
Keywords :
filled polymers; hopping conduction; mixing; neodymium; optical microscopy; polymer structure; scanning electron microscopy; AC conductivity; DC conductivity; LDPE-neodymium composites; Nd spherical particles; SEM; disordered solids; electrical conductivity; filler content; low density polyethylene-neodymium composites; melt mixing process; optical microscopy; polymeric matrix; scanning electron microscopy; symmetric hopping model; Conductivity; Neodymium; Plastics; Polyethylene; Scanning electron microscopy; Temperature measurement; composite materials; conductivity; shielding;
Conference_Titel :
Advanced Topics in Electrical Engineering (ATEE), 2013 8th International Symposium on
Conference_Location :
Bucharest
Print_ISBN :
978-1-4673-5979-5
DOI :
10.1109/ATEE.2013.6563458
