Progress Report on Long-Term Thermal Performance of Polyisocyanurate Boardstock Materials

Following a successful application of slicing and scaling techniques to predict the long-term performance of sprayed polyurethane foams, three types of generic boardstock products were examined in this work. The conclusion is that the scaling approach may not be directly applicable to faced or non-uniform boardstock products. The results shown in this report indicate, however, that preparing specimens with a partial encapsulation technique developed during this research and measuring aging curves on these specimens may help in the quality assurance of the boardstock products.