Polyimide Copolymers and Nanocomposites: A Review of the Synergistic Effects of the Constituents on the Fire-Retardancy Behavior

Carbon-based polymer can catch fire when used as cathode material in batteries and supercapacitors, due to short circuiting. Polyimide is known exhibit flame retardancy by forming char layer condensed phase. The high yield of polyimide attributed its aromatic nature the existence a donor–acceptor complex backbone. Fabrication hybrid provide better protection against based on multiple fire-retardancy mechanisms. Nanocomposites generally show significant enhancement mechanical, electrical, thermal properties. Nanoparticles, such graphene carbon nanotubes, enhance phase dense layer. Silicone-based materials also similar mechanism polyimide. However, some inorganic retardants, phosphazene, gaseous releasing inhibiting radicals. radicals generated phosphazene are released into during combustion. A system constituted polyimide, silicone-based additives, would improvement both gas In this review, several flame-retardant polyimide-based systems described. This review which focuses various combinations other candidate fire-retardant shed light an effective multifunctional materials.