Nguyễn, H. T. M., Hoang, D. and Phạm, T. C. (2021) “Study of flame retardancy, thermal and physical properties of rigid polyurethane foam based on recycled poly(ethylene terephthalate) using non-halogen flame retardant”, Science & Technology Development Journal: Natural Sciences, 5(2), pp. 1189-1197. doi: https://doi.org/10.32508/stdjns.v5i2.1011.