Rigid polyurethane foam is a polymeric insulator where the ratio of polyol components significantly affects the final properties of the foam. The first key factor in these foams is the cross-link density of the polymer network, which ensures the final strength of the foam. In other words, rigid polyurethane foam has a closed-cell structure with high cross-linking and is a thermoset material with low density. This product is used in thermal insulation applications such as refrigerators and freezers, building insulation, pipes, refrigerated vehicles, and more. Therefore, rigid polyurethane foams play a crucial role in energy conservation.
Due to the variety of properties and benefits, they have wide applications in various industries. Some of the most important applications of rigid polyurethane foam are: