A Liquid Phosphaphenanthrene-Derived Imidazole for Improved Flame Retardancy and Smoke Suppression of Epoxy Resin
Article
Article Title | A Liquid Phosphaphenanthrene-Derived Imidazole for Improved Flame Retardancy and Smoke Suppression of Epoxy Resin |
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ERA Journal ID | 211585 |
Article Category | Article |
Authors | Huo, Siqi (Author), Yang, Shuang (Author), Wang, Jun (Author), Cheng, Jianwen (Author), Zhang, Qianqian (Author), Hu, Yefa (Author), Ding, Guoping (Author), Zhang, Qiaoxin (Author), Song, Pingan (Author) and Wang, Hao (Author) |
Journal Title | ACS Applied Polymer Materials |
Journal Citation | 2 (8), pp. 3566-3575 |
Number of Pages | 10 |
Year | 2020 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 2637-6105 |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsapm.0c00577 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsapm.0c00577 |
Abstract | The fabrication of high-performance thermosetting polymers with intrinsic flame retardancy and smoke suppression is necessary but challenging. Herein, we have successfully synthesized a liquid phosphaphenanthrene/imidazole-containing curing agent (DOPO-AI) for epoxy resin (EP) by the Atherton-Todd reaction of 1-(3-Aminopropyl)imidazole (AI) and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The as-prepared EP/DOPO-AI samples exhibit comparable mechanical properties to the reference EP/AI-6 sample, with slightly decreased glass transition temperatures. Impressively, the EP/DOPO-AI sample can pass the UL-94 V-0 rating and achieve a limited oxygen index (LOI) value of 37.0%. Additionally, the EP/DOPO-AI sample shows 26.3%, 36.6%, and 24.4% reductions in the total heat release (THR), peak of heat release rate (pHRR), and total smoke production (TSP) relative to the EP/AI-6 sample, indicating a significantly reduced fire hazard. The significant enhancements in flame retardancy and smoke suppression are attributed to the condensed-and gaseous-phase effects of DOPO-AI. This work demonstrates a feasible methodology for creating high-performance EPs with inherent flame retardancy and smoke suppression, holding great promise in the future. |
Keywords | epoxy resin; flame retardancy; liquid phosphaphenanthrene-derived imidazole; mechanical properties; smoke suppression |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
401609. Polymers and plastics | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Future Materials |
Wuhan University of Technology, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6zvv/a-liquid-phosphaphenanthrene-derived-imidazole-for-improved-flame-retardancy-and-smoke-suppression-of-epoxy-resin
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