论文信息 - Electric field induced permittivity increase of carbon particle aggregates/silicone oil suspension

Electric field induced permittivity increase of carbon particle aggregates/silicone oil suspension

Permittivity percolation threshold of carbon particle aggregates/silicone oil (CPA/SO) suspension was determined (Φc = 2.6 wt%). A direct current electric field induced permittivity increase versus time for the suspension containing 0.2 wt% of the CPA was measured at different field strengths. It was found that the electric field at 200 V/cm increases the permittivity of the CPA/SO suspension (ε’ = 3.2 at 1 kHz) by three orders of magnitude in 30 min. At 800V/cm the same permittivity increase was reached in 1.5 min.

M. Knite | K. Ozols | S. Scegoleva

[1] F. Avilés,et al. A dielectrophoretic study of the carbon nanotube chaining process and its dependence on the local electric fields , 2018, Meccanica.

[2] Son Thanh Nguyen,et al. Electrical property enhancement by controlled percolation structure of carbon black in polymer-based nanocomposites via nanosecond pulsed electric field , 2018 .

[3] M. Knite,et al. A study of electric field-induced conductive aligned network formation in high structure carbon black/silicone oil fluids , 2017 .

[4] Y. Perets,et al. Electrical Properties of Composite Materials with Electric Field-Assisted Alignment of Nanocarbon Fillers , 2017, Nanoscale Research Letters.

[5] A. Allais,et al. Electric field as a tuning key to process carbon nanotube suspensions with controlled conductivity , 2016 .

[6] G. Helgesen,et al. Dielectrophoresis in particle confinement: Aligned carbon particles in polymer matrix below percolation threshold , 2014 .

[7] A. Oliva,et al. Dynamics of carbon nanotube alignment by electric fields , 2012, Nanotechnology.

[8] B. Grady. Carbon Nanotube-Polymer Composites: Manufacture, Properties, and Applications , 2011 .

[9] Christian Roy,et al. Electrical conductivity of conductive carbon blacks: influence of surface chemistry and topology , 2003 .

[10] M. Shur,et al. Permittivity anomaly in metal-dielectric transitions. Theory and simulation , 1976 .