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Effect of filler concentration on dielectric properties of RTV silicone rubber/TiO2 nanocomposite

Madidi Fatima Zahra, Momen Gelareh et Farzaneh Masoud. (2013). Effect of filler concentration on dielectric properties of RTV silicone rubber/TiO2 nanocomposite. Dans 2013 IEEE Electrical Insulation Conference (EIC). (). Piscataway, NJ : Institute of Electrical and Electronics Engineers.

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Résumé

Silicone rubber is a polymer with low dielectric permittivity which needs to be improved for outdoor insulation applications. However, the addition of semiconducting materials with high dielectric constants, like TiO 2 (ε~80), to silicone rubber (SR) can improve its dielectric properties and electrical conductivity. The presence of these inorganic fillers allows the homogenization and distribution of the insulator electric field, thus considerably reducing electrical stress. In this paper, a RTV SR/TiO 2 nanocomposite was synthesized and characterized. Also, to further understand its dielectric behavior, experiments were carried out to measure the dielectric permittivity of the nanocomposite by using an impedance analyzer. The influence of the filler concentration (up to 20 wt% TiO 2 ) on the dielectric behavior of the nanocomposite over a frequency range of (40 Hz to 2 MHz) was discussed. Moreover, it was characterized by means of scanning electron microscopy by studying the nanofiller distribution in the polymer. The results showed that the surfactant Triton-X-100 improves the dispersion of the nanoparticles. Furthermore, it was found that the real relative permittivity (ε r ), as well as the imaginary relative permittivity (ε r ”) increase as the nanofiller concentration increases.

Type de document:Chapitre de livre
Date:13 Juillet 2013
Lieu de publication:Piscataway, NJ
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Liens connexes:
Mots-clés:Nanoparticles, Rubber, Polymers, Dispersion, Permittivité, nanoparticules, caoutchouc, polymères, dispersion, diélectriques, Surfactant, Triton™, X-100, nanofiller, dispersion, dielectrics, silicone, permittivity
Déposé le:16 juin 2021 19:55
Dernière modification:16 juin 2021 19:55
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