Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin
By improving the existing preparation methods, a piperazine polypyrophosphat (PAPP) with high thermal stability was synthesized. It was compounded with halloysite nanotube (HNTs) and melamine cyanurate (MCA) to form P-N-Si intumescent flame retardant, and was used in synergistic flame retardant epox...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2023-06-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000243 |
| _version_ | 1797799914736975872 |
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| author | MA Jing LIU Meizhe ZHU Mingxuan ZHU Jing ZHANG Zhaobang WANG Baohe |
| author_facet | MA Jing LIU Meizhe ZHU Mingxuan ZHU Jing ZHANG Zhaobang WANG Baohe |
| author_sort | MA Jing |
| collection | DOAJ |
| description | By improving the existing preparation methods, a piperazine polypyrophosphat (PAPP) with high thermal stability was synthesized. It was compounded with halloysite nanotube (HNTs) and melamine cyanurate (MCA) to form P-N-Si intumescent flame retardant, and was used in synergistic flame retardant epoxy resin (EP). The effect of intumescent flame retardant on the flame retardancy of EP was investigated by means of limiting oxygen index, vertical combustion, cone calorimeter and SEM etc. The results show that the introduction of the compound flame retardant forms a dense and continuous intumescent carbon layer, which improves the flame retardant efficiency of the epoxy resin in the condensed phase and the gas phase. It reduces the heat release and heat release rate of epoxy resin and the toxic gases release effectively. When the PAPP/HNTs/MCA ratio is 7∶1∶2, the limiting oxygen index of flame retardant resin reaches 34.3%, the UL-94 vertical combustion test reaches V-0 level. Compared with pure EP, the amount of residual carbon is increased significantly, the peak heat release rate (HRR) is decreased by 60.56%, and the total heat release (THR) and toxic gas emissions are reduced significantly for modified EP. In addition, the thermogravimetric analysis results suggest that the initial decomposition temperature of flame retardant modified EP is decreased by 4.4% (ΔT), and the modified EP still has high thermal stability. |
| first_indexed | 2024-03-13T04:26:07Z |
| format | Article |
| id | doaj.art-a59804e56a0043929244778a1ab61b28 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-03-13T04:26:07Z |
| publishDate | 2023-06-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-a59804e56a0043929244778a1ab61b282023-06-20T04:31:48ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812023-06-0151617718510.11868/j.issn.1001-4381.2022.00024320230620Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resinMA Jing0LIU Meizhe1ZHU Mingxuan2ZHU Jing3ZHANG Zhaobang4WANG Baohe5Key Laboratory of Green Synthesis Conversion(Ministry of Education), R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Green Synthesis Conversion(Ministry of Education), R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Green Synthesis Conversion(Ministry of Education), R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Green Synthesis Conversion(Ministry of Education), R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Green Synthesis Conversion(Ministry of Education), R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Green Synthesis Conversion(Ministry of Education), R&D Center for Petrochemical Technology, Tianjin University, Tianjin 300072, ChinaBy improving the existing preparation methods, a piperazine polypyrophosphat (PAPP) with high thermal stability was synthesized. It was compounded with halloysite nanotube (HNTs) and melamine cyanurate (MCA) to form P-N-Si intumescent flame retardant, and was used in synergistic flame retardant epoxy resin (EP). The effect of intumescent flame retardant on the flame retardancy of EP was investigated by means of limiting oxygen index, vertical combustion, cone calorimeter and SEM etc. The results show that the introduction of the compound flame retardant forms a dense and continuous intumescent carbon layer, which improves the flame retardant efficiency of the epoxy resin in the condensed phase and the gas phase. It reduces the heat release and heat release rate of epoxy resin and the toxic gases release effectively. When the PAPP/HNTs/MCA ratio is 7∶1∶2, the limiting oxygen index of flame retardant resin reaches 34.3%, the UL-94 vertical combustion test reaches V-0 level. Compared with pure EP, the amount of residual carbon is increased significantly, the peak heat release rate (HRR) is decreased by 60.56%, and the total heat release (THR) and toxic gas emissions are reduced significantly for modified EP. In addition, the thermogravimetric analysis results suggest that the initial decomposition temperature of flame retardant modified EP is decreased by 4.4% (ΔT), and the modified EP still has high thermal stability.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000243epoxy resinintumescent flame retardantflame retardancythermal stabilitypiperazine polypyrophosphat |
| spellingShingle | MA Jing LIU Meizhe ZHU Mingxuan ZHU Jing ZHANG Zhaobang WANG Baohe Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin Cailiao gongcheng epoxy resin intumescent flame retardant flame retardancy thermal stability piperazine polypyrophosphat |
| title | Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin |
| title_full | Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin |
| title_fullStr | Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin |
| title_full_unstemmed | Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin |
| title_short | Piperazine polypyrophosphat-halloysite nanotubes-melamine cyanurate synergistic flame retardant epoxy resin |
| title_sort | piperazine polypyrophosphat halloysite nanotubes melamine cyanurate synergistic flame retardant epoxy resin |
| topic | epoxy resin intumescent flame retardant flame retardancy thermal stability piperazine polypyrophosphat |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2022.000243 |
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