Exolit OP930 (abbreviate OP930) product based on aluminum (diethyl phosphinate) is a new class of flame retardants for the use in epoxy resin (EP). In this paper, the mechanical properties, the morphologies of fracture surfaces, thermal stability, glass transition temperature (Tg) and flame retardant of OP930-EP composites with different composition have been studied. The composites exhibit satisfying thermal properties and a high limiting oxygen index (LOI) value as well as good compatibility with the matrix. Compared to neat resin, the mechanical properties of composites are also on a very good level.
