Nano Reinforcement POSS Effect towards Flame Retardancy

6 Nano Reinforcement (POSS) Effect towards Flame Retardancy 

The flcune retardcuicy of all epoxy systems was enhcuiced by the incorporcition of POSS nano reinforcements (Table 3.8). This might possibly be due to the formation of oxidatively stable, nonpermeable surface char and a multilayered carbonaceous sflicate structure that acted as an insulator. Besides this, the better exfohation of POSS within the polymer matrices may also have accomited for an enhanced flame retardancy to epoxy resins. The effect of POSS towards flame retardmcy wcis more in the case of phosphorous- and siloxane-modified tetrafunctional epoxy systems them the sulphone and need epoxies, thereby supporting the results obtained from mechanical, thermo-mechanical and thermal studies as discussed earher. 

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