Related Experiment Video
Updated: May 14, 2025

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
Published on: September 19, 2020
High-Permittivity Silicone Composites with Different Polarization Titanates for Electric Field Modification
Evgeniy Radzivilov1, Ilya Zotov2, Maria Vikulova2
1School of Advanced Manufacturing Technologies, Tomsk Polytechnic University, 30 Lenina Avenue, 634050 Tomsk, Russia.
High-permittivity silicone composites with ceramic fillers like titanates were developed. These materials show potential for electric field modification in insulation applications, with some formulations enhancing electrical strength.
Area of Science:
- Materials Science
- Electrical Engineering
- Ceramic Engineering
Background:
- Polymer-matrix composites with ceramic fillers are crucial for modifying electric fields.
- High-permittivity materials are essential for advanced electrical insulation applications.
Purpose of the Study:
- To synthesize and characterize high-permittivity silicone composites using various polarization titanates.
- To investigate the impact of ceramic fillers and glycerin on the electrical properties of silicone composites.
Main Methods:
- Mechanical mixing was used to prepare silicone composites with CaCu3Ti4O12, KxFeyTi8-yO16, and BaTiO3 fillers (25 wt.%).
- X-ray phase analysis and scanning electron microscopy were employed for ceramic powder characterization.
- Electrical strength and permittivity were measured to evaluate composite performance.
Main Results:
- Addition of ceramic fillers generally decreased electrical strength, except for CaCu3Ti4O12 without glycerin (approx. 28 kV·mm-1).
- Permittivity and dielectric loss tangent increased with filler addition, particularly with glycerol at low frequencies.
- The results align with existing literature on dielectric composites.
Conclusions:
- Silicone composites with specific ceramic fillers demonstrate tunable dielectric properties.
- These materials show promise for use in high-permittivity insulation layers to equalize electric fields.
More Related Videos
08:00Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
08:06Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
Published on: February 23, 2017
Related Concept Videos
Dielectric Polarization in a Capacitor
Potential Due to a Polarized Object
Susceptibility, Permittivity and Dielectric Constant
Induced Electric Dipoles
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Induced Electric Fields: Applications