polüisotsüanuraat
Polyisocyanurate, often abbreviated as PIR or PUR, is a type of rigid foam insulation material widely used in the construction industry. It is formed through the polymerization of isocyanates and polyols, with a higher proportion of isocyanates compared to standard polyurethane. This chemical structure results in a thermosetting plastic with a closed-cell composition, meaning the cells are sealed and do not allow air or moisture to pass through easily.
The manufacturing process typically involves mixing isocyanates, polyols, blowing agents, and catalysts, which then react to
In addition to its insulating properties, PIR foam exhibits good fire resistance characteristics. The isocyanurate rings