Silane coupling agent grafted graphene oxide and its modification on polybenzoxazine resin

Graphene oxide (GO), as a two-dimensional carbon material with excellent properties including strong mechanical properties and good thermal resistance, can be used to modify the polybenzoxazine (PBZ) resins. Unfortunately, the poor dispersity of GO is still the main obstacle restricting the effects of GO in PBZ resin. Silane coupling agent, 3-aminopropyltriethoxy-silane (APTS), is a good choice to modify the surface of GO to improve the dispersity and the bridging action between GO and PBZ resin. In this way, not only the poor dispersion of GO in benzoxazine can be overcome, but also the potential of GO, such as good thermal resistance and strong mechanical properties, can be explored during the modification of PBZ resin.