A Study on the Properties and Structure of polyether-Sulfone-Modified Epoxy Adhesives

Abstract Properties and morphology of PES-modified epoxy adhesives were studied in this paper. These systems have excellent mechanical properties and can be used as heat-resistant adhesives. SEM and EDX observations showed that the system has a two-phase structure. At lower PES content, there is a PES dispersed phase and a epoxy continuous phase. At higher PES content, there are two continuous phases. From these results, the relationship between structure and properties of this system were discussed. Key Words: Epoxy adhesivemechanical propertiesmorphologyphase separationpolyethersulfone (PES), structure