and Characterization

introduction polyurethane (pu) materials are ubiquitous in modern life, finding applications in coatings, adhesives, sealants, elastomers, and foams. the versatility of pu stems from the diverse range of isocyanates and polyols that can be employed, as well as the various reaction pathways that can be utilized to tailor the final polymer properties. trimerization, a reaction that converts isocyanates into isocyanurate rings, is a particularly important process…