A review of the recent developments in flame-retardant nylon composites

An overview of recent developments of flame-retardant nylon 6 and nylon 66 is presented in this paper. The research of flame-retardant composites is mainly through adding flame-retardant elements to nylon molecules, which can be divided into physical addition and chemical addition. Each of these two methods has its advantages and disadvantages. In this paper, according to the different addition methods and flame-retardant mechanism of various flame-retardants, the flame-retardant properties of phosphorus flame-retardants, nitrogen flame-retardants, bio based flame-retardants and synergistic systems, as well as their effects on the mechanical properties of flame-retardant composites have been critically reviewed and summarized. This review will objectively explore and give new direction for the development of the flame-retardant nylon materials, which would be more accessible to the emerging field of materials science.