Decomposable double-walled hybrid nanorods: formation mechanism and their effect on flame retardancy of epoxy resin composites

摘要: Double-walled Al–P–Si hybrid decomposable nanorods, which have a silica coated aluminum phosphonate nanostructure, were in situ prepared by thorough but ordered reconstruction of montmorillonite. The was facilely performed through hydrothermal reaction montmorillonite with diphenyl phosphoric acid. formation process nanorods involves the decomposition montmorillonite, repolymerization to generate phosphonates, assembly via π–π stacking interactions form 1D and coating on nanorods. Interestingly, it found that only layered silicates exhibited such into nano-sized sandwich structure may lead highly reactive Si–O tetrahedra synergistic process. showed around 400 °C, producing nanoparticles mainly composed silicates. fire property test epoxy/Al–Si–P nanorod nanocomposites outstanding flame retardant performance. One possible explanation for this is particles resulting from easily migrated surface epoxy resins, consequently forming protective layers.