The Catalytic Contribution to Chemical Resistance in Cured Polyurethane Films

abstract: polyurethane (pu) coatings are widely employed across diverse industries due to their exceptional mechanical properties, abrasion resistance, and versatility. however, the chemical resistance of cured pu films remains a critical performance parameter, particularly in aggressive environments. while the selection of polyols and isocyanates plays a primary role in determining inherent chemical stability, the choice and concentration of the catalyst significantly influence the crosslinking density, network…