Study on Heat-decomposition Performance of PU/DMMP Flexible Foam System

The thermal stability of dimethyl methylphosphonate,diethyl ethylphosphonate and dipropyl propyphosphonate in flexible polyurethane foam were studied by thermal analysis method. The results obtained shown that the initial decomposing temperature and maximum decomposing temperature of PU are postponed and the exothermic rate is retarded with adding the thermal stabilizer.