A liquid phosphorus-containing imidazole derivative as flame-retardant curing agent for epoxy resin with enhanced thermal latency, mechanical, and flame-retardant performances
Article
Huo, Siqi, Yang, Shuang, Wang, Jun, Cheng, Jianwen, Zhang, Qianqian, Hu, Yefa, Ding, Guoping, Zhang, Qiaoxin and Song, Pingan. 2020. "A liquid phosphorus-containing imidazole derivative as flame-retardant curing agent for epoxy resin with enhanced thermal latency, mechanical, and flame-retardant performances." Journal of Hazardous Materials. 386, pp. 1-10. https://doi.org/10.1016/j.jhazmat.2019.121984
| Article Title | A liquid phosphorus-containing imidazole derivative as flame-retardant curing agent for epoxy resin with enhanced thermal latency, mechanical, and flame-retardant performances |
|---|---|
| ERA Journal ID | 4682 |
| 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) and Song, Pingan (Author) |
| Journal Title | Journal of Hazardous Materials |
| Journal Citation | 386, pp. 1-10 |
| Article Number | 121984 |
| Number of Pages | 10 |
| Year | 2020 |
| Publisher | Elsevier |
| Place of Publication | Netherlands |
| ISSN | 0304-3894 |
| 1873-3336 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jhazmat.2019.121984 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0304389419319387 |
| Abstract | The development of phosphorus-containing flame retardants combining good compatibility with matrix, low curing temperature, and mechanically reinforcing effect has remained a major challenge. Herein, we reported the synthesis of a liquid flame-retardant curing agent (DA) via the nucleophilic substitution between diphenylphosphinic chloride and 1-(3-aminopropyl)-imidazole (AI). DA exhibited good blending and latency towards epoxy resin (EP) at room temperature. According to DSC studies, DA could rapidly cure EP at moderate temperature. Compared with EP/AI sample, EP/DA samples displayed comparable or higher glass transition temperature (Tg) and enhanced mechanical properties due to the introduction of rigid diphenylphosphinyl group and improved cross-linking density. Moreover, DA improved the flame-retardant performances of EP thermoset. For instance, the LOI and UL94 rating of EP/DA-16 sample achieved 37.2 % and V-0, respectively. In addition, the peak of heat release rate (PHRR), average of heat release rate (AHRR), fire growth rate (FIGRA), and total heat release (THR) for EP/DA-16 sample reduced by 32 %, 42 %, 28 % and 27 % in comparison to EP/AI sample, respectively. DA was characterized by its good compatibility with EP, moderate curing temperature, fast curing rate, suitable thermal latency, mechanical reinforcing and flame-retardant effects, and thus it had a broad application prospect in various industrial fields. |
| Keywords | Epoxy resin; Liquid phosphorus-containing imidazole; Thermal latency; Flame retardancy; Mechanical properties |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401605. Functional materials |
| 401609. Polymers and plastics | |
| 401602. Composite and hybrid materials | |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Institution of Origin | University of Southern Queensland |
| Byline Affiliations | Wuhan University of Technology, China |
| Centre for Future Materials | |
| Centre for Future Materials | |
| Funding source | Australian Research Council (ARC) Grant ID DP190102992 |
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