Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety
In this work, the green and efficient organic-inorganic hybrid flame retardant materials (PA-Si-PPO-LDHs) were prepared by introducing phenyl phosphoric acid (PPO) and phytic acid (PA) between layers and surface of hydrotalcites, and characterized. With the addition of 10 wt% PA-Si-PPO-LDHs, the EP...
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Elsevier
2025-08-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25006215 |
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| author | Yuting Ao Lulu Xu Hanjun Wu Qingrong Cheng Hong Zhou Zhiquan Pan |
| author_facet | Yuting Ao Lulu Xu Hanjun Wu Qingrong Cheng Hong Zhou Zhiquan Pan |
| author_sort | Yuting Ao |
| collection | DOAJ |
| description | In this work, the green and efficient organic-inorganic hybrid flame retardant materials (PA-Si-PPO-LDHs) were prepared by introducing phenyl phosphoric acid (PPO) and phytic acid (PA) between layers and surface of hydrotalcites, and characterized. With the addition of 10 wt% PA-Si-PPO-LDHs, the EP composites achieved UL-94 V-1 rating and a limiting oxygen index of 30.0 %, and obtained 46.4 %, 37.0 % and 20.1 % reduction in heat release rate, CO production and total smoke production, respectively. In addition, the PA-Si-PPO-LDHs were better dispersed in EP, and the tensile, three-point bending and simple beam impact strengths of EP composites were improved in comparison with the pure EP. The prepared PA-Si-PPO-LDHs contributed to improve the flame retardant of EP composites by the formation of the dense char layer in the condensed phase, dilution of flammable gases and the released phosphorus-containing free radicals for capture of the H• and HO• free radicals in the gas phase. Co and Ni metal-catalyzed CO conversion of CO2 reduced the release of heat and hazardous gases, and improve the fire safety of EP composites. The present work provided a simple method for the preparation of green and efficient LDHs-based organic-inorganic hybrid flame retardants for improving the fire safety of epoxy composites. |
| format | Article |
| id | doaj-art-15cf21a09a6f4b6faee451fa97b3ed27 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-15cf21a09a6f4b6faee451fa97b3ed272025-08-20T03:13:07ZengElsevierCase Studies in Thermal Engineering2214-157X2025-08-017210636110.1016/j.csite.2025.106361Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safetyYuting Ao0Lulu Xu1Hanjun Wu2Qingrong Cheng3Hong Zhou4Zhiquan Pan5School of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan, 430074, Hubei, ChinaSchool of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan, 430074, Hubei, ChinaSchool of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan, 430074, Hubei, China; Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430074, Hubei, China; Corresponding author. School of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan 430074, Hubei, China.School of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan, 430074, Hubei, China; Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430074, Hubei, ChinaSchool of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan, 430074, Hubei, China; Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430074, Hubei, ChinaSchool of Chemistry and Environmental Engineering, Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Wuhan Institute of Technology, Wuhan, 430074, Hubei, China; Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430074, Hubei, ChinaIn this work, the green and efficient organic-inorganic hybrid flame retardant materials (PA-Si-PPO-LDHs) were prepared by introducing phenyl phosphoric acid (PPO) and phytic acid (PA) between layers and surface of hydrotalcites, and characterized. With the addition of 10 wt% PA-Si-PPO-LDHs, the EP composites achieved UL-94 V-1 rating and a limiting oxygen index of 30.0 %, and obtained 46.4 %, 37.0 % and 20.1 % reduction in heat release rate, CO production and total smoke production, respectively. In addition, the PA-Si-PPO-LDHs were better dispersed in EP, and the tensile, three-point bending and simple beam impact strengths of EP composites were improved in comparison with the pure EP. The prepared PA-Si-PPO-LDHs contributed to improve the flame retardant of EP composites by the formation of the dense char layer in the condensed phase, dilution of flammable gases and the released phosphorus-containing free radicals for capture of the H• and HO• free radicals in the gas phase. Co and Ni metal-catalyzed CO conversion of CO2 reduced the release of heat and hazardous gases, and improve the fire safety of EP composites. The present work provided a simple method for the preparation of green and efficient LDHs-based organic-inorganic hybrid flame retardants for improving the fire safety of epoxy composites.http://www.sciencedirect.com/science/article/pii/S2214157X25006215HydrotalcitesFlame retardantphytic acidEpoxy resinFire safety |
| spellingShingle | Yuting Ao Lulu Xu Hanjun Wu Qingrong Cheng Hong Zhou Zhiquan Pan Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety Case Studies in Thermal Engineering Hydrotalcites Flame retardant phytic acid Epoxy resin Fire safety |
| title | Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety |
| title_full | Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety |
| title_fullStr | Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety |
| title_full_unstemmed | Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety |
| title_short | Organophosphonic acid intercalation and surface-functionalized hydrotalcite-based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety |
| title_sort | organophosphonic acid intercalation and surface functionalized hydrotalcite based flame retardant materials for epoxy resins with highly effective smoke suppression and fire safety |
| topic | Hydrotalcites Flame retardant phytic acid Epoxy resin Fire safety |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25006215 |
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