Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Chemically modified copper tailings doped anti-UV ageing coating for flame retarding plywood through catalytic charring
https://orcid.org/0000-0002-5931-4229
https://orcid.org/0000-0002-5945-0239
Abstract Herein the copper tailings (CTs) based geopolymer flame retardant coating is prepared by blending melamine polyphosphate (MPP) and aluminum diethyl phosphate (AlPi). Microstructural characterizations and pyrolysis kinetics are used to investigate the synergistic flame-retardant mechanism of the coating. The results demonstrate that appropriate MPP and AlPi significantly enhance the flame retardancy of the coating, evidenced by the peak of heat release rate (p-HRR) decreasing from 134.97 to 70.25 kW·m−2, the flame performance index (FPI) increasing from 1.62 to 4.36 s·m2·kW−1, and the flame retardant index (FRI) increasing from 1.00 to 5.12. Meanwhile, the modified Coats-Redfern pyrolysis kinetics indicates that the formation of stable residues during combustion increases the adequate activation energy (Eα) from 137.55 to 224.47 kJ·mol−1 within the temperature range of 688–958°C. Notably, the copper tailings exhibit the ability to catalyze charring. Besides, the coating exhibits a formaldehyde adsorption capacity of 57.2%. CTs and AlPi exhibit promising potential in mitigating the effects of ultraviolet (UV) radiation-induced ageing. Consequently, this study explores the optimal ratio of copper tailings to MPP/AlPi, develops a novel organic-inorganic ageing-resistant flame-retardant coating, and reveals the vast prospects of industrial solid waste in green flame retardancy.
Graphical Abstract Display Omitted
Highlights Copper tailings and AlPi enhance charring in combustion and exhibit resistance to UV aging. FPI increases from 1.62 to 4.36; FRI increases from 1.00 to 5.12. 2.5 wt% AlPi makes Eα rise from 137.55 to 224.47 kJ·mol−1.
Chemically modified copper tailings doped anti-UV ageing coating for flame retarding plywood through catalytic charring
https://orcid.org/0000-0002-5931-4229
https://orcid.org/0000-0002-5945-0239
Abstract Herein the copper tailings (CTs) based geopolymer flame retardant coating is prepared by blending melamine polyphosphate (MPP) and aluminum diethyl phosphate (AlPi). Microstructural characterizations and pyrolysis kinetics are used to investigate the synergistic flame-retardant mechanism of the coating. The results demonstrate that appropriate MPP and AlPi significantly enhance the flame retardancy of the coating, evidenced by the peak of heat release rate (p-HRR) decreasing from 134.97 to 70.25 kW·m−2, the flame performance index (FPI) increasing from 1.62 to 4.36 s·m2·kW−1, and the flame retardant index (FRI) increasing from 1.00 to 5.12. Meanwhile, the modified Coats-Redfern pyrolysis kinetics indicates that the formation of stable residues during combustion increases the adequate activation energy (Eα) from 137.55 to 224.47 kJ·mol−1 within the temperature range of 688–958°C. Notably, the copper tailings exhibit the ability to catalyze charring. Besides, the coating exhibits a formaldehyde adsorption capacity of 57.2%. CTs and AlPi exhibit promising potential in mitigating the effects of ultraviolet (UV) radiation-induced ageing. Consequently, this study explores the optimal ratio of copper tailings to MPP/AlPi, develops a novel organic-inorganic ageing-resistant flame-retardant coating, and reveals the vast prospects of industrial solid waste in green flame retardancy.
Graphical Abstract Display Omitted
Highlights Copper tailings and AlPi enhance charring in combustion and exhibit resistance to UV aging. FPI increases from 1.62 to 4.36; FRI increases from 1.00 to 5.12. 2.5 wt% AlPi makes Eα rise from 137.55 to 224.47 kJ·mol−1.
Chemically modified copper tailings doped anti-UV ageing coating for flame retarding plywood through catalytic charring
https://orcid.org/0000-0002-5931-4229
https://orcid.org/0000-0002-5945-0239
Abstract Herein the copper tailings (CTs) based geopolymer flame retardant coating is prepared by blending melamine polyphosphate (MPP) and aluminum diethyl phosphate (AlPi). Microstructural characterizations and pyrolysis kinetics are used to investigate the synergistic flame-retardant mechanism of the coating. The results demonstrate that appropriate MPP and AlPi significantly enhance the flame retardancy of the coating, evidenced by the peak of heat release rate (p-HRR) decreasing from 134.97 to 70.25 kW·m−2, the flame performance index (FPI) increasing from 1.62 to 4.36 s·m2·kW−1, and the flame retardant index (FRI) increasing from 1.00 to 5.12. Meanwhile, the modified Coats-Redfern pyrolysis kinetics indicates that the formation of stable residues during combustion increases the adequate activation energy (Eα) from 137.55 to 224.47 kJ·mol−1 within the temperature range of 688–958°C. Notably, the copper tailings exhibit the ability to catalyze charring. Besides, the coating exhibits a formaldehyde adsorption capacity of 57.2%. CTs and AlPi exhibit promising potential in mitigating the effects of ultraviolet (UV) radiation-induced ageing. Consequently, this study explores the optimal ratio of copper tailings to MPP/AlPi, develops a novel organic-inorganic ageing-resistant flame-retardant coating, and reveals the vast prospects of industrial solid waste in green flame retardancy.
Graphical Abstract Display Omitted
Highlights Copper tailings and AlPi enhance charring in combustion and exhibit resistance to UV aging. FPI increases from 1.62 to 4.36; FRI increases from 1.00 to 5.12. 2.5 wt% AlPi makes Eα rise from 137.55 to 224.47 kJ·mol−1.
Chemically modified copper tailings doped anti-UV ageing coating for flame retarding plywood through catalytic charring
Qu, ChunLong (Autor:in) / Wang, YaChao (Autor:in) / Yu, Kang (Autor:in) / Zhao, JiangPing (Autor:in)
22.03.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2018