Effect of network mesh size on the thermo-mechanical properties of epoxy nanocomposites with the heavier homologue of POSS, the inorganic butylstannoxane cages

摘要: A novel tin-based POSS analogue, butylstannoxane dodecamer, was incorporated into epoxy networks with strongly different mesh sizes in comparison to the nanofiller dimensions. The stannoxane cage is especially attractive due its anti-oxidative effect, which based on oxidative crosslinking reactions. It can also cause additional reinforcement via units’ oligomerization. strongest mechanical observed nanocomposites a network width close, but somewhat larger, than size. In narrow-mesh-matrix, large rigid causes plastification, sterical impossibility of formation some crosslinks around filler units. effect matrix widest mesh, had longest polypropylene oxide chains, and hence largest number sites potentially reacting homogeneity prepared evaluated by TEM.