GUBAYDULLIN RINAT SHAVKATOVICH. STUDY OF THE PHYSICAL AND MECHANICAL PROPERTIES OF RIGID POLYURETHANE FOAMS OBTAINED ON THE BASIS OF SYNTHESIZED PRODUCTS. International Multidisciplinary Journal for Research & Development, [S. l.], v. 13, n. 4, p. 66–70, 2026. Disponível em: https://www.ijmrd.in/index.php/imjrd/article/view/5497. Acesso em: 4 apr. 2026.