Scanning Electron Microscope (SEM); UL 1666 riser test; Transmission Electron Microscopy (TEM); maximal temperature of the main degradation peak (DTG) in air, 20C/min, for EVA and EVA nanocomposites; EVA: Escorene UL 00328 with 28 wt% VA; intercalation versus exfoliation; fire performances of FRNH coaxial cable with EVA/ATH and EVA/ATH/nanofiller outer sheaths