Hybrid Strategies for the Improvement of the Flame Retardancy of in-situ Silica-Epoxy Nanocomposites cured with Aliphatic Hardener

Abstract The aerospace industry requires materials showing good mechanical performance, durability, and thermal stability to satisfy very stringent requirements in several applications. Epoxy-based composites can be a suitable solution, due the peculiar characteristics of polymer matrix. Epoxy resins cured by aliphatic or aromatic hardeners. use amines is preferable because their lower toxicity, though these curing agents are easily flammable. Recently, hybrid systems conjugating in-situ modified epoxy matrix with organic inorganic additives have been developed flame retard composites. This short review summarizes some applications such strategies, which based on sol-gel technique, DOPO-based retardants, bio-waste compounds other synergists. describes main concept this approach preparation no-dripping self-extinguishing silica-epoxy low phosphorus loadings, tailored interphases properties.