Optimizing Rigid Polyurethane Foams with Quartz and Marble Fillers for Improved Mechanical and Thermal Performance. International journal of physical sciences, [S. l.], v. 5, n. 03, p. 9–18, 2025. Disponível em: https://www.academicpublishers.org/journals/index.php/ijps/article/view/6225.. Acesso em: 8 oct. 2025.