Abstract: The effect on mechanical properties and flame retardancy of flame retarded epoxy resin samples with different contents of reactive flame retardants and additive flame retardants were studied in this article, the thermal stability of different flame retarded epoxy resin were also studied. The results showed that the mechanical properties and flame retardancy of DOPO was better than DOPO-CH2OH in the reactive flame retardants, the properties of MP was better than APP in the additive flame retardants. Comparing the two types of flame retardants, the mechanical properties, flame retardancy and thermal stability of the two reactive flame retardant was better than additive flame retardant of MP and APP.

Key words: epoxy resin, flame retardancy, phosphorus, mechanical property