Title :
Space charge behavior of XLPE/SiO2 nanocomposites with nanoparticle surface modification
Author :
Ling Zhang ; Yuanxiang Zhou ; Xiaoyang Cui ; Yunxiao Zhang ; Qing Ye
Author_Institution :
State Key Lab. of Control & Simulation of Power Syst. & Generation Equipments, Tsinghua Univ., Beijing, China
Abstract :
Space charge behavior of XLPE/SiO2 nanocomposites with nanoparticle surface modification via titanate(TC) and vinylsilance(VI) coupling agents was investigated. SEM results clearly show that TC and VI coupling agents improved nanoparticle dispersion within XLPE matrix due to the increasing surface hydrophobicity of SiO2 nanoparticles. Space charge measurements under high electric field revealed that SiO2 nanoparticles could not effectively suppress the injection and movement of space charge until organic surface modification, which was believed due to more and deeper trap sites considering the better dispersion of SiO2 nanoparticles.
Keywords :
XLPE insulation; hydrophobicity; nanocomposites; nanoparticles; scanning electron microscopy; silicon compounds; space charge; SEM results; SiO2; TC coupling agents; VI coupling agents; XLPE matrix; XLPE-SiO2 nanocomposites; nanoparticle dispersion; nanoparticle surface modification; organic surface modification; space charge behavior; surface hydrophobicity; titanate coupling agents; trap sites; vinylsilance coupling agents; Anodes; Electric breakdown; Electric fields; Nanocomposites; Nanoparticles; Space charge; Surface morphology; SiO2 nanoparticle; XLPE; nanocomposite; nanoparticle surface modification; space charge;
Conference_Titel :
Electrical Insulation Conference (EIC), 2014
Conference_Location :
Philadelphia, PA
Print_ISBN :
978-1-4799-2787-6
DOI :
10.1109/EIC.2014.6869418
