Enhancing Fire Retardancy in Polyurethane Foams with Trimethylaminoethyl Piperazine Amine Catalyst Introduction Polyurethane (PU) foams, renowned for their versatility, excellent insulation properties, and cost-effectiveness, have found widespread applications across various sectors, including construction, automotive, furniture, and packaging. However, their inherent flammability presents a significant safety concern, limiting their broader adoption in applications requiring stringent fire...