Research of fire resistance and physical-mechanical properties of secondary polyethyleneF.F. Nazarov, E.M. Beknazarov, J.R. Chuliev, F.S. Nazarov and S.Sh. LutfullaevE3S Web Conf., 392 (2023) 02042DOI: https://doi.org/10.1051/e3sconf/202339202042