Modyfication of the Rigid Polyurethane-Polyisocyanurate Foams

Figure 3

Dependence between temperature of decomposition of rigid PUR-PIR foams and content of polyethylene glycol 1500. T-1—temperature of the first loss of foam mass °C, T-2—extrapolated temperature of the beginning of the first loss of foam mass °C, T-3—temperature of the beginning of rapid decomposition °C, and T-4—temperature of the highest rate of loss of foam mass °C.