Effect of AE-POSS content on the compatibility and mechanical properties of GER/DOPO-POSS composites

In this work, the bio-based epoxy nanocomposites (GER/DOPO-POSS) were prepared, and AE-POSS was synthesized and used as compatibilizer for GER/DOPO-POSS nanocomposites. The effects of AE-POSS content on mechanical properties, thermal stability, compatibility and flame retardancy of GER/DOPO-POSS nanocomposites were discussed. The results showed that the addition of AE-POSS significantly improved the dispersity of DOPO-POSS in gallic epoxy matrix. AE-POSS can improve both the thermal stability and flame retardancy of GER/DOPO-POSS nanocomposites. When 6.0 wt % AE-POSS was added in GER/DOPO-POSS, the limiting oxygen index of it was 25.6%, and the initial thermal degradation temperature of it was 36 °C higher than that without AE-POSS. Graphic abstract