Influence of nanofiller dispersion on electrical and mechanical properties of epoxy alumina nanocomposites / Neelmani in REVUE DES COMPOSITES ET DES MATERIAUX AVANCES, Vol. 31, N° 4 (08/2021)  

[article]  inREVUE DES COMPOSITES ET DES MATERIAUX AVANCES > Vol. 31, N° 4 (08/2021) . - p. 217-225 Titre : Influence of nanofiller dispersion on electrical and mechanical properties of epoxy alumina nanocomposites Type de document : texte imprimé Auteurs : Neelmani, Auteur ; Ramanujam Sarathi, Auteur ; Hisayuki Suematsu, Auteur ; Toshikatsu Tanaka, Auteur Année de publication : 2021 Article en page(s) : p. 217-225 Note générale : Bibliogr. Langues : Français (fre) Catégories : Agglomération (matériaux) Alumine Charges (matériaux) Composites -- Propriétés électriques Composites -- Propriétés mécaniques Dispersions et suspensions Elasticité Epoxydes Traitement corona Index. décimale : 668.4 Plastiques, vinyles Résumé : The electrical and mechanical properties of the epoxy alumina nanocomposites depend on the uniform dispersion of the nanofiller in the epoxy matrix. Epoxy alumina nanocomposites were prepared using 1, 3, and 5 wt% of alumina nanofiller, and electrical and mechanical properties were analyzed using experimental and modelling studies. Water droplet initiated corona inception voltage (CIV) was identified using fluorescence fiber technique and by Ultra High Frequency (UHF) technique, under AC and DC voltages. The CIV formed due to water droplet have reduced drastically with increase in number of droplets and fluorescent fiber technique found to be more sensitive to identify water droplet initiated discharges. A micro mechanical model was proposed to analyse the combined effect of the interphase and agglomeration properties of the alumina nanoparticles on the tensile strength of epoxy alumina nanocomposites. Variation in ϕagg, Eagg, and E were analysed by adopting the non-parametric distribution of alumina nanoparticles and Young’s modulus increased with the increment in the alumina nanofiller dispersion level. The presence of aggregated particles exhibits a negative effect on the tensile properties of nanocomposites. Note de contenu : - EXPERIMENTAL STUDIES : Raw materials, instruments and equipment - Preparation of epoxy alumina nanocomposites - Water droplet initiated discharge studies - Tensile test - MODELLING OF THE YOUNG' MODULUS : Modulus - Classical models for evaluating Young’s modulus - RESULTS AND DISCUSSION : Variation in water droplet initiated Corona inception voltage - Effect of interphase and agglomeration on the Young’s modulus - Effect of uniform dispersion of nanoparticles on the Young’s modulus Table 1: Bandwidth for surface area distribution DOI : https://doi.org/10.18280/rcma.310405 En ligne : https://www.iieta.org/download/file/fid/60230 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37673 [article]

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