title: Effect of Dispersion Method on Stability and Dielectric Strength of Transformer Oil-Based TiO2Nanofluids.
abstract: Dispersion stability of nanoparticles in the liquid media is of great importance to the utilization in practice. This study aims to investigate the effects of mechanical dispersion method on the dispersibility of functionalized TiO2nanoparticles in the transformer oil. Dispersion methods, including stirring, ultrasonic bath, and probe processes, were systematically tested to verify their versatility for preparing stable nanofluid. The test results reveal that the combination of ultrasonic bath process and stirring method has the best dispersion efficiency and the obtained nanofluid possesses the highest AC breakdown strength. Specifically, after aging for 168 h, the size of nanoparticles in the nanofluid prepared by the combination method has no obvious change, while those obtained by the other three paths are increased obviously.
authors.affiliation: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China. yzlv@ncepu.edu.cn.|State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China. yzlv@ncepu.edu.cn.
authors.forename: Yu-Zhen
authors.initials: YZ
authors.lastname: Lv
authors.affiliation: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.affiliation: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Sun
authors.affiliation: State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China.|Beijing Key Laboratory of High Voltage and EMC, North China Electric Power University, Beijing, 102206, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China.|Beijing Key Laboratory of High Voltage and EMC, North China Electric Power University, Beijing, 102206, China.
authors.forename: Cheng-Rong
authors.initials: CR
authors.lastname: Li
authors.affiliation: State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China.|Beijing Key Laboratory of High Voltage and EMC, North China Electric Power University, Beijing, 102206, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Qi
keywords: Breakdown strength; Dispersion method; Functionalized TiO2 nanoparticle; Nanofluid; Stability