Electrically Conductive Low-Density Sealing Composites Based on Hollow Carbon Microspheres and Epoxy-Diane Resin

The dependence of the current-conducting and physicomechanical properties of epoxyamine composites on the content of hollow carbon microspheres serving as a filler for these composites was investigated. It is shown that the percolation point, which is a point of transition from an insulator to a current-conducting material, is observed at the content of carbon microspheres of 29 vol %, and the maximum absorption of electromagnetic radiation by the sealing material in the centimeter superhigh-radio-frequency band is observed with an approximation to the range of transition of the composite to an electrically conductive state.