The Impact of Trimethylhydroxyethyl Ethylenediamine (TMEEA) on the Thermal Stability and Durability of Polyurethane-Based Materials Abstract Polyurethane (PU) materials are widely used in various industries due to their excellent mechanical properties, versatility, and durability. However, these materials can be susceptible to thermal degradation, which limits their long-term performance and application scope. Trimethylhydroxyethyl ethylenediamine (TMEEA) has...