Electrical and Thermo-mechanical Properties of DGEBA Cycloaliphatic Diamine Nano PA and SiO2 Composites

  • Trnka, Pavel (Faculty of Electrical Engineering, University of West Bohemia) ;
  • Mentlik, Vaclav (Faculty of Electrical Engineering, University of West Bohemia) ;
  • Harvanek, Lukas (Faculty of Electrical Engineering, University of West Bohemia) ;
  • Hornak, Jaroslav (Faculty of Electrical Engineering, University of West Bohemia) ;
  • Matejka, Libor (Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic)
  • Received : 2017.11.03
  • Accepted : 2018.06.04
  • Published : 2018.11.01


This study investigates a new organic based material and its dielectric and mechanical properties. It is a comprehensive nanocomposite comprising a combination of various types of nanofillers with hydrophobic silica nanoparticles (AEROSIL R 974) as a matrix modifier and a polyamide nano nonwoven textile, Ultramid-Polyamide 6, pulped in the electrostatic field as a dielectric barrier. The polymer matrix is an epoxy network based on diglycidyl ether of bisphenol A (DGEBA) and cycloaliphatic diamine (Laromine C260). The designed nanocomposite material is an alternative to the conventional three-component composites containing fiberglass and mica with properties that exceed current electroinsulating systems (volume resistivity on the order of $10^{16}{\Omega}{\cdot}m$, dissipation factor tan ${\delta}=4.7{\cdot}10^{-3}$, dielectric strength 39 kV/mm).


Supported by : West Bohemia University in Pilsen


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