In the last 50 years,a number of well established and widely used fire retardants have provided the necessary low fire risk that allowed in the last fifty years the safe development and application of polymer materials and hence of all our technologies in advanced areas as well as in everyday life.However,the "traditional" fire retardants generally show unsatisfactory performances in terms of environmental impact and fire hazard.Thus the past fire retardancy strategy mostly aiming at quenching the flame in the gas phase,will have to be abandoned in favour of condensed phase mechanisms aiming at reducing the supply of combustible gases to the flame,below the self sustaining combustion level.
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