Title :
Bimodal brush functionalized TiO2/silicone nanocomposites with improved dielectric properties
Author :
Yanhui Huang ; Krentz, Timothy M. ; Nelson, J. Keith ; Schadler, Linda S. ; Bell, Michael ; Benicewicz, Brian
Author_Institution :
Dept. of Mater. Sci. & Eng., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
Bimodal ligand engineering was applied in TiO2/silicone nanocomposites to independently control the nanoparticle dispersion and interface properties. The introduction of well-dispersed anthracene grafted TiO2 nanoparticles improved the AC breakdown strength and retarded the space charge accumulation in silicone rubber. A candidate mechanism of charge trapping and impact ionization of TiO2 and anthracene is proposed to explain the improvements.
Keywords :
electric breakdown; electric strength; filled polymers; impact ionisation; nanocomposites; nanoparticles; semiconductor materials; silicone rubber; space charge; titanium compounds; AC breakdown strength; TiO2; anthracene grafted nanoparticles; bimodal brush functionalized TiO2-silicone nanocomposites; bimodal ligand engineering; charge trapping; dielectric properties; impact ionization; interface properties; nanoparticle dispersion; silicone rubber; space charge accumulation; Charge carrier processes; Dielectrics; Dispersion; Electric breakdown; Nanocomposites; Nanoparticles; Polymers; bimodal ligand engineering; charge trapping; impact Ionization; nanocomposite; silicone;
Conference_Titel :
Electrical Insulation Conference (EIC), 2015 IEEE
Print_ISBN :
978-1-4799-7352-1
DOI :
10.1109/ICACACT.2014.7223517
