Study on the Synergies of Nanoclay and MWCNTs to the Flame Retardant and Mechanical Properties of Epoxy Nanocomposites

Figure 5

Oxygen index of composite materials: epoxy E 240/nanoclay I.30E (N1), epoxy E 240/MWCNTs (M1), MN (6-hour ultrasonic vibration), MN7 (stirring for 7 hours mechanically, 6-hour ultrasonic vibration), MN8 (8-hour mechanical stirring, 6-hour ultrasound), and MN9 (9-hour mechanical stirring, 6-hour ultrasound).