The researches on degradation and combustion of rigid polyurethane foams (RPUF) were reviewed
based on the degradation of polyurethane foam in different conditions
the regulations of degradation and combustion of RPUF were summarized. On the basis of theory and results in the literature and our research
the influence of phosphorus flame retardants and nano materials on the flame retardant properties of RPUF
including limited oxygen index and heat release rate
was focused. The flame retardant mechanism and regulation of phosphorus flame retardant and the effectiveness of synergy of phosphorus flame retardants and functional fillers on the flame retardant properties of RPUF were summarized. At last
the way to realize halogen-free flame retardant RPUF was indicated.