Synergistic Optimization of Mechanical and Tribological Properties of Polyurethane through Chain Extender Regulation
Developing polyurethane (PU) elastomers that simultaneously combine high strength, toughness, and wear resistance remains challenging. Here, PU elastomers were prepared from polycarbonate diol and hexamethylene diisocyanate using mixtures of N,N′-bis(2-hydroxyethyl)oxamide (BHO), a hydroxyl-functional chain extender,...